ORCID Profile
0000-0003-0094-7141
Current Organisation
Monash University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Resources Engineering and Extractive Metallurgy | Civil Engineering | Geomechanics and Resources Geotechnical Engineering | Geomechanics | Civil Geotechnical Engineering | Structural Engineering | Construction Materials | Geotechnical Engineering | Petroleum and Reservoir Engineering | Mining Engineering | Mining Engineering | Petroleum And Reservoir Engineering | Construction Engineering | Earthquake Engineering | Geodynamics | Transport Engineering | Construction Engineering | Risk Engineering (excl. Earthquake Engineering) | Structural Engineering
ANZSRC Socio-Economic Objective (SEO)
Civil Construction Design | Geothermal Energy Extraction | Management of Greenhouse Gas Emissions from Mineral Resource Activities | Coal | Oil and Gas Extraction | Energy transformation | Cement and Concrete Materials | Renewable Energy not elsewhere classified | Management of Greenhouse Gas Emissions from Energy Activities (excl. Electricity Generation) | Management of Greenhouse Gas Emissions from Electricity Generation | Commercial Construction Design | Industrial Construction Design | Uranium | Oil and gas | Wind Energy | Oil Shale and Tar Sands Mining and Extraction | Climate change | Civil | Coal Mining and Extraction | Environmentally Sustainable Energy Activities not elsewhere classified | Civil | Cement Products and Concrete Materials | Prevention and treatment of pollution | Climate Change Mitigation Strategies | Energy storage | Metals (e.g. Composites, Coatings, Bonding) | Hydrogen Storage | Polymeric materials (e.g. paints) | Geothermal Exploration | Cement and concrete materials |
Related Links
Publications
Experimental investigation of thermomechanical behaviour of clay-rich sandstone at extreme temperatures followed by cooling treatments
Publisher: Elsevier BV
Date: 07-2018
An elastoplastic model for gas flow characteristics around drainage borehole considering post-peak failure and elastic compaction
Publisher: Springer Science and Business Media LLC
Date: 25-09-2018
Influence of long-term operation of supercritical carbon dioxide based enhanced geothermal system on mineralogical and microstructurally-induced mechanical alteration of surrounding rock mass
Publisher: Elsevier BV
Date: 06-2019
Investigating the proppant damage mechanisms expected in a propped coal fracture and its effect on fracture flow
Publisher: Elsevier BV
Date: 03-2021
A study of rock abrasivity and tool wear in Coal Measures Rocks
Publisher: Elsevier BV
Date: 03-2008
The effect of CO2 on the geomechanical and permeability behaviour of brown coal: Implications for coal seam CO2 sequestration
Publisher: Elsevier BV
Date: 03-2006
Evaluation of creep mechanical behavior of deep-buried marble under triaxial cyclic loading
Publisher: Springer Science and Business Media LLC
Date: 15-11-2014
Experimental investigation on the mechanical behaviours of a low-clay shale under water-based fluids
Publisher: Elsevier BV
Date: 2018
Effect of joint orientation on the hydromechanical behavior of singly jointed sandstone experiencing undrained loading
Publisher: American Geophysical Union (AGU)
Date: 03-2014
DOI: 10.1002/2013JB010600
Trajectories of fathers’ psychological distress across the early parenting period: Implications for parenting.
Publisher: American Psychological Association (APA)
Date: 10-2015
DOI: 10.1037/FAM0000109
Abstract: Fathers' parenting behavior is a likely key mechanism underlying the consistent associations between paternal mental health difficulties and poor emotional-behavioral outcomes for children. This study investigates the association between fathers' mental health trajectories and key parenting behaviors (warmth, hostility, consistency) spanning the first 8-9 years postpartum. Secondary analyses of 5 waves of data from 2,662 fathers participating in the Longitudinal Study of Australian Children were conducted. Latent growth class analysis was used to identify distinct trajectories of fathers' distress (Kessler-6 Kessler et al., 2003), and latent growth models estimated parenting warmth, hostility, and consistency. Multiple group analyses were conducted to describe and compare the course of parenting behaviors for fathers assigned to the distress trajectories identified. Two distinct classes of fathers were identified based on the trajectories of distress: minimal distress (92%) and persistent and increasing distress (8%). The latter group reported significantly lower parenting warmth when their children were 8-9 years and lower consistency and higher hostility across all study intervals. The postnatal and early parenting period is a critical time for the development of parenting behaviors that are important for children's development. Engagement and support for fathers around well-being and parenting is vital for promoting optimal family and child developmental outcomes.
Current opinions on foam-based hydro-fracturing in deep geological reservoirs
Publisher: Springer Science and Business Media LLC
Date: 12-11-2015
A theoretical model for hydraulic fracturing through a single radial perforation emanating from a borehole
Publisher: Elsevier BV
Date: 06-2018
Performance evaluation of cement stabilized fly ash-GBFS mixes as a highway construction material
Publisher: Elsevier BV
Date: 2008
DOI: 10.1016/J.WASMAN.2007.09.017
Abstract: Fly ash and granulated blast furnace slag (GBFS) are major by-products of thermal and steel plants, respectively. These materials often cause disposal problems and environmental pollution. Detailed laboratory investigations were carried out on cement stabilized fly ash-(GBFS) mixes in order to find out its suitability for road embankments, and for base and sub-base courses of highway pavements. Proctor compaction test, unconfined compressive strength (UCS) test and California Bearing Ratio (CBR) test were conducted on cement stabilized fly ash-GBFS mixes as per the Indian Standard Code of Practice. Cement content in the mix was varied from 0% to 8% at 2% intervals, whereas the slag content was varied as 0%, 10%, 20%, 30% and 40%. Test results show that an increase of either cement or GBFS content in the mixture, results in increase of maximum dry density (MDD) and decrease of optimum moisture content (OMC) of the compacted mixture. The MDD of the cement stabilized fly ash-GBFS mixture is comparably lower than that of similarly graded natural inorganic soil of sand to silt size. This is advantageous in constructing lightweight embankments over soft, compressible soils. An increase in percentage of cement in the fly ash-GBFS mix increases enormously the CBR value. Also an increase of the amount of GBFS in the fly ash s le with fixed cement content improves the CBR value of the stabilized mix. In the present study, the maximum CBR value of compacted fly ash-GBFS-cement (52:40:8) mixture obtained was 105%, indicating its suitability for use in base and sub-base courses in highway pavements with proper combinations of raw materials.
Influence of thermal treatment on mode I fracture toughness of certain Indian rocks
Publisher: Elsevier BV
Date: 08-2016
Investigation of the influence of coal swelling on permeability characteristics using natural brown coal and reconstituted brown coal specimens
Publisher: Elsevier BV
Date: 03-2012
Distinct Element Model Analysis of Mechanical Behavior of Rock with Interconnected Non-Persistent Joints
Publisher: American Society of Civil Engineers
Date: 23-06-2014
Fracture behavior of intact rock using acoustic emission: experimental observation and realistic modeling
Publisher: ASTM International
Date: 12-09-2013
DOI: 10.1520/GTJ20120086
Artificial neural network for prediction of air flow in a single rock joint
Publisher: Springer Science and Business Media LLC
Date: 05-2012
Understanding the significance of in situ coal properties for CO2 sequestration: An experimental and numerical study
Publisher: Hindawi Limited
Date: 07-2014
DOI: 10.1002/ER.3062
A review of coal properties pertinent to carbon dioxide sequestration in coal seams: With special reference to Victorian brown coals
Publisher: Springer Science and Business Media LLC
Date: 24-11-2011
A study of methodologies for CO 2 storage capacity estimation of saline aquifers
Publisher: Elsevier BV
Date: 03-2012
A review on existing opencast coal mining methods within Australia
Publisher: Springer Science and Business Media LLC
Date: 05-2010
The permeability of geopolymer at down-hole stress conditions: Application for carbon dioxide sequestration wells
Publisher: Elsevier BV
Date: 02-2013
Modeling of Transverse Thermal Cracking of FRP Bars Embedded in Concrete
Publisher: Springer Science and Business Media LLC
Date: 29-01-2014
Behavior of shallow tunnel in soft soil under seismic conditions
Publisher: Elsevier BV
Date: 12-2018
The behavior of a carbonate sand subjected to a wide strain range of medium-frequency flexural excitation
Publisher: Springer Science and Business Media LLC
Date: 02-02-2017
Numerical modeling of Gondwana coal seams in India as coalbed methane reservoirs substituted for carbon dioxide sequestration
Publisher: Elsevier BV
Date: 2013
Effect of Geochemical Characteristics on Caprock Performance in Deep Saline Aquifers
Publisher: American Chemical Society (ACS)
Date: 25-01-2021
The effect of saturation conditions on fracture performance of different soundless cracking demolition agents (SCDAs) in geological reservoir rock formations
Publisher: Elsevier BV
Date: 02-2019
Physico-mechanical behaviour of southeastern Melbourne sedimentary rocks
Publisher: Elsevier BV
Date: 04-2010
A Coupled X-Ray Imaging and Experimental Permeability Study of Propped Hydraulically Induced Fractures
Publisher: Springer Science and Business Media LLC
Date: 27-07-2022
Three-Dimensional Numerical Investigation of Coupled Flow-Stress-Damage Failure Process in Heterogeneous Poroelastic Rocks
Publisher: MDPI AG
Date: 24-07-2018
DOI: 10.3390/EN11081923
Abstract: The failure mechanism of heterogeneous rocks (geological materials), especially under hydraulic conditions, is important in geological engineering. The coupled mechanism of flow-stress-damage should be determined for the stability of rock mass engineering under triaxial stress states. Based on poroelasticity and damage theory, a three-dimensional coupled model of the flow-stress-damage failure process is studied, focusing mainly on the coupled characteristics of permeability evolution and damage in nonhomogeneous rocks. The influences of numerous mesoscale mechanical and hydraulic properties, including homogeneity, residual strength coefficient, loading rates, and strength criteria, on the macro mechanical response are analyzed. Results reveal that the stress sensitive factor and damage coefficient are key variables for controlling the progress of permeability evolution, and these can reflect the hydraulic properties under pre-peak and post-peak separately. Moreover, several experiments are conducted to evaluate the method in terms of permeability evolution and failure process and to verify the proposed two-stage permeability evolution model. This model can be used to illustrate the failure mechanics under hydraulic conditions and match different rock types. The relation of permeability with strain can also help confirm appropriate rock mass hydraulic parameters, thereby enhancing our understanding of the coupled failure mechanism in rock mass engineering.
Geopolymer as well cement and the variation of its mechanical behavior with curing temperature
Publisher: Wiley
Date: 13-10-2012
DOI: 10.1002/GHG.39
Experimental Study of Strain Rate Sensitivity to Fracture Toughness of Rock using Flattened Brazilian Disc
Publisher: Elsevier BV
Date: 2017
Variation of mechanical properties of bituminous coal under CO2 and H2O saturation
Publisher: Elsevier BV
Date: 2019
Stress state and stress path evaluation to address uncertainties in reservoir rock failure in CO2 sequestration in deep saline aquifers: An experimental study of the Hawkesbury sandstone formation
Publisher: Elsevier BV
Date: 07-2018
Energy evolution characteristics of hard rock during triaxial failure with different loading and unloading paths
Publisher: Elsevier BV
Date: 10-2017
Transformation plasticity and the effect of temperature on the mechanical behaviour of Hawkesbury sandstone at atmospheric pressure
Publisher: Elsevier BV
Date: 11-2012
Major factors influencing proppant behaviour and proppant-associated damage mechanisms during hydraulic fracturing
Publisher: Springer Science and Business Media LLC
Date: 30-04-2018
Multi-fractal analysis for the AE energy dissipation of CO2 and CO2+ brine/water treated low-clay shales under uniaxial compressive tests
Publisher: Elsevier BV
Date: 06-2019
Geological controls on variable gas concentrations: A case study of the northern Gujiao Block, northwestern Qinshui Basin, China
Publisher: Elsevier BV
Date: 04-2018
Thermally-induced mechanical behaviour of a single proppant under compression: Insights into the long-term integrity of hydraulic fracturing in geothermal reservoirs
Publisher: Elsevier BV
Date: 05-2018
Effect of bedding planes, their orientation and clay depositions on effective re-injection of produced brine into clay rich deep sandstone formations: Implications for deep earth energy extraction
Publisher: Elsevier BV
Date: 2016
Investigating the effect of salt and acid impurities in supercritical CO2 as relevant to the corrosion of carbon capture and storage pipelines
Publisher: Elsevier BV
Date: 09-2013
A Comprehensive Review of Structural Alterations in CO2-Interacted Coal: Insights into CO2 Sequestration in Coal
Publisher: American Chemical Society (ACS)
Date: 27-10-2020
Investigation of depth and injection pressure effects on breakdown pressure and fracture permeability of shale reservoirs: An experimental study
Publisher: MDPI AG
Date: 28-06-2017
DOI: 10.3390/APP7070664
Improvement of acid sulfate soils using lime-activated slag
Publisher: Thomas Telford Ltd.
Date: 11-2014
Abstract: This study investigates the effect of pyrite contents on the strength behaviour of lime-slag-treated acid sulfate soils (ASS). A fixed lime content of 10% and slag contents of 0 to 25% were investigated. This study finds that unconfined compressive strength USC development of treated ASS at slag contents less than 10% was below or at the level of treated non-pyritic soils at comparable curing periods. Moreover, the effect of pyrite variations on the UCS behaviour was negligible at these low slag contents. A slag content exceeding 10% increases the strength of treated ASS considerably over the 365 day curing periods investigated. However, a drop of strength after 180 days of curing was recorded for a slag content of 25%. Mineralogical study indicated a probable development of deleterious reaction product (i.e. thaumasite), which is deemed to be responsible for the degradation of strength.
Proppant Crushing Mechanisms Under Reservoir Conditions: Insights into Long-Term Integrity of Unconventional Energy Production
Publisher: Springer Science and Business Media LLC
Date: 15-12-2018
Effect of joints on p–y behaviour of laterally loaded piles socketed into mudstone
Publisher: Elsevier BV
Date: 04-2011
Advanced core flooding apparatus to estimate permeability and storage dynamics of CO2 in large coal specimens
Publisher: Elsevier BV
Date: 02-2013
Environmental life-cycle comparisons of steel production and recycling: Sustainability issues, problems and prospects
Publisher: Elsevier BV
Date: 10-2011
Determination of sealing depth of in-seam boreholes for seam gas drainage based on drilling process of a drifter
Publisher: Elsevier BV
Date: 08-2016
A numerical study of triaxial mechanical behaviour of geopolymer at different curing temperatures: An application for geological sequestration wells
Publisher: Elsevier BV
Date: 09-2015
Thermo-mechanical properties of Bundelkhand granite near Jhansi, India
Publisher: Springer Science and Business Media LLC
Date: 30-06-2015
Experimental and numerical studies on the mechanical behaviour of Australian Strathbogie granite at high temperatures: An application to geothermal energy
Publisher: Elsevier BV
Date: 03-2015
Damage model of coal under creep and triaxial compression
Publisher: Elsevier BV
Date: 12-2015
Effects of seam conditions, injection pressure, and gas composition on CO2 sequestration in coal
Publisher: No publisher found
Date: 2011
Investigation of effects of fracturing fluid on hydraulic fracturing and fracture permeability of reservoir rocks: An experimental study using water and foam fracturing
Publisher: Elsevier BV
Date: 05-2018
Micro-mechanics based numerical simulation of NaCl brine induced mechanical strength deterioration of sedimentary host-rock formations
Publisher: Elsevier BV
Date: 08-2018
Rebuttal to Quantities relevant to the effectiveness of carbon sequestration in coal beds
Publisher: Elsevier BV
Date: 10-2012
Study of Deformation Law of Casing Local Lateral Collapse Based on the Principle of Virtual Work
Publisher: MDPI AG
Date: 28-09-2019
DOI: 10.3390/EN12193717
Abstract: In view of the water swelling of mudstone and the creep induction function of formations in the process of oilfield water injection, the casing incurs collapse deformation under local lateral load. In this study, according to the actual collapse deformation characteristics of the casing in the second section of the Qing formation of the Songliao Basin in China, the yield surfaces of the casing collapse deformation are considered as plane plastic areas (half rhombus) with symmetric parabola shaped boundaries, and a mechanical model for the local lateral collapse deformation of casing is presented based on the principle of virtual work. Four types of casing, 4½″J55, 5½″J55, 4½″N80 and 5½″N80, are selected as ex les. The relation of the casing intensity, the absolute reduction of intensity and the relative reduction ratio of intensity change with casing wall thickness, yield stress, radial maximum deformation, and deformation length are calculated and analyzed. The results show that the casing intensity of the casing is reduced under local lateral load, which is lower than the design standard value of the American Petroleum Association specification (API SPEC) 5CT. The relative reduction ratio declines linearly with the wall thickness of the casing wall as the yield stress increases, and increases linearly with increasing maximum deformation. In addition, the local lateral bearing capacity of the casing reaches the minimum value when the plastic deformation length reaches the critical value or the deformation quantity is less than the critical value. The conclusions provide scientific guidance for preventing casing failure accidents caused by deformation.
Carbonation-induced properties of alkali-activated cement exposed to saturated and supercritical CO2
Publisher: Elsevier BV
Date: 09-2021
Fracture mechanical behavior of red sandstone containing a single fissure and two parallel fissures after exposure to different high temperature treatments
Publisher: Elsevier BV
Date: 12-2014
Experimental Investigation of Mechanical Properties of Black Shales after CO2-Water-Rock Interaction
Publisher: MDPI AG
Date: 05-08-2016
DOI: 10.20944/PREPRINTS201608.0056.V1
Abstract: The effects of CO2-water-rock interactions on the mechanical properties of shale are essential for estimating the possibility of sequestrating CO2 in shale reservoirs. In this study, uniaxial compressive strength (UCS) tests together with an acoustic emission (AE) system and SEM & EDS analysis were performed to investigate the mechanical properties and microstructural changes of black shales with different saturation times (10 days, 20 days and 30 days) in water dissoluted with sub-/super-critical CO2. According to the experimental results, the values of UCS, Young& rsquo s modulus and brittleness index decrease gradually with increasing saturation time in water with sub-/super-critical CO2. Compared to intact s les, 30-days& rsquo saturation causes reductions of 56.43% in UCS and 54.21% in Young& rsquo s modulus for sub-critical saturated s les, and 66.05% in UCS and 56.32% in Young& rsquo s modulus for super-critical saturated s les, respectively. The brittleness index also decreases drastically from 84.3% for intact s les to 50.9% for s les saturated in water with sub-critical CO2, to 47.9% for s les saturated in water with super-critical carbon dioxide (SC-CO2). SC-CO2 causes a greater reduction of shale& rsquo s mechanical properties. The crack propagation results obtained from the AE system show that longer saturation time produces higher peak cumulative AE energy. SEM images show that many pores occur when shale s les are saturated in water with sub-/super-critical CO2. The EDS results show that CO2-water-rock interactions increase the percentages of C and Fe and decrease the percentages of Al and K on the surface of saturated s les when compared to intact s les.
Visual representation and characterization of three-dimensional hydrofracturing cracks within heterogeneous rock through 3D printing and transparent models
Publisher: Springer Science and Business Media LLC
Date: 09-2016
The Geomechanical Behavior of Australian Black Coal under the Effects of CO 2 Injection: Uniaxial Testing
Publisher: American Society of Civil Engineers
Date: 11-05-2006
DOI: 10.1061/40860(192)33
Carbon dioxide storage in coal: Reconstituted coal as a structurally homogeneous substitute for coal
Publisher: Informa UK Limited
Date: 11-2012
A Study of the Particle-Level Fabric and Morphology of Granular Soils under One-Dimensional Compression Using Insitu X-ray CT Imaging
Publisher: MDPI AG
Date: 29-05-2018
DOI: 10.3390/MA11060919
Erratum for Time-dependent strength and mineralogy of lime-ggbs treated naturally occurring acid sulfate soils by Shahidul Islam, Asadul Haque, Siobhan A. Wilson, and P. G. Ranjith, F.ASCE [J. Mater. Civ. Eng. Volume 28, Issue 1 (January 2016), Doi: 10.1061/(ASCE)MT.1943-5533.0001333]
Publisher: American Society of Civil Engineers (ASCE)
Date: 2016
A parametric study of coal mass and cap rock behaviour and carbon dioxide flow during and after carbon dioxide injection
Publisher: Elsevier BV
Date: 04-2013
Water-weakening behavior of Hawkesbury sandstone in brittle regime
Publisher: Elsevier BV
Date: 08-2014
Iron ore and steel production trends and material flows in the world: Is this really sustainable?
Publisher: Elsevier BV
Date: 10-2010
Grain-scale analysis of proppant crushing and embedment using calibrated discrete element models
Publisher: Springer Science and Business Media LLC
Date: 27-06-2022
DOI: 10.1007/S11440-022-01575-9
Abstract: Proppant crushing and embedment in hydraulically-induced fractures is a major drawback to the recovery of unconventional oil/gas and geothermal energy production. This study provides a grain-scale analysis of the fracture evolution mechanisms of proppant crushing, rock fracture damage during proppant embedment, the influence of realistic reservoir/fracture fluid on proppant embedment, and the behaviour of proppant packs subjected to in-situ stresses using a discrete element modelling (DEM) approach. The results of this study reveal that the selection of an appropriate proppant type based on the nature of the reservoir formation plays a vital part in quantifying the degree of proppant crushing and embedment within fractures. The utilisation of frac-sand proppants instead of ceramic proppants in shallow soft sedimentary-based siltstone formations reduces proppant embedment up to 88%. However, whatever the depth of the fracture, the injection of ceramic proppants into granite-based geothermal formations is preferred to that of frac-sand proppants due to their lower proppant embedment and greater crush resistance. DEM analysis detected rock-spalling during the proppant embedment process, which ultimately led to the initiation of tensile-dominant secondary fractures in rocks. Fracture initiation, propagation, and coalescence during proppant crushing are analysed using calibrated DEM proppant-rock assemblies. Importantly, this study reveals that the saturation of formation rocks with fracturing/reservoir fluids may cause a significant increase in proppant embedment. Furthermore, proppant crushing, embedment, and re-arrangement mechanisms in proppant packs with different proppant distributions are analysed in this comprehensive numerical study.
Loading History Effect on Creep Deformation of Rock
Publisher: MDPI AG
Date: 06-06-2018
DOI: 10.3390/EN11061462
Application of an Efficient Numerical Model for CO2 Sequestration in Deep Saline Aquifers
Publisher: Springer Singapore
Date: 2019
An experimental and numerical study on cracking behavior of brittle sandstone containing two non-coplanar fissures under uniaxial compression
Publisher: Springer Science and Business Media LLC
Date: 12-09-2016
Characterisation of fractured rocks under uniaxial loading states
Publisher: Elsevier BV
Date: 05-2004
Numerical and experimental investigation of hydraulic fracturing in Kaolin clay
Publisher: Elsevier BV
Date: 10-2015
A brittleness evaluation method of rock constitutive relationship with Weibull distribution based on double‐body system theory
Publisher: Wiley
Date: 19-07-2020
DOI: 10.1002/ESE3.708
A review of shale swelling by water adsorption
Publisher: Elsevier BV
Date: 11-2015
Permeability of the fractured rockmass - a review
Publisher: CRC Press
Date: 26-11-2013
DOI: 10.1201/B15320-112
Study of Caprock Integrity in Geosequestration of Carbon Dioxide
Publisher: American Society of Civil Engineers (ASCE)
Date: 08-2011
The influence of bedding angle on failure mechanisms in sandstone
Publisher: CRC Press
Date: 15-09-2011
DOI: 10.1201/B11646-52
Effect of salinity on supercritical CO2 permeability of caprock in deep saline aquifers: An experimental study
Publisher: Elsevier BV
Date: 2020
Modeling the effects of heterogeneity and anisotropy on the excavation damaged/disturbed zone (EDZ)
Publisher: Springer Science and Business Media LLC
Date: 04-2009
Associations Between Developmental Risk Profiles, Mental Disorders, and Student Absences Among Primary and Secondary Students in Australia
Publisher: Springer Science and Business Media LLC
Date: 15-04-2021
Numerical analysis of fluid flow in single rock fracture
Publisher: American Society of Civil Engineers
Date: 28-05-2013
Nutritive blood flow improves interstitial glucose and lactate exchange in perfused rat hindlimb
Publisher: American Physiological Society
Date: 07-2002
DOI: 10.1152/AJPHEART.01024.2001
Abstract: Microdialysis was used to assess the interstitial concentrations of glucose and lactate in the constant-flow-perfused rat hindlimb under varying levels of nutritive flow controlled by vasoconstrictors. Increased nutritive flow was achieved by norepinephrine (NE) or angiotensin II (ANG II) and decreased nutritive flow by serotonin (5-HT). NE and ANG II increased oxygen and glucose uptake as well as hindlimb lactate release by 50%. 5-HT decreased oxygen uptake by 15% but had no significant effect on glucose uptake or hindlimb lactate release. Microdialysis recovery of glucose and lactate was significantly elevated by NE and ANG II and decreased by 5-HT. The calculated interstitial concentration of glucose was increased by NE and ANG II but decreased by 5-HT. The interstitial concentration of lactate was decreased by NE and ANG II but increased by 5-HT. In all cases, nitroprusside reversed the effects of the vasoconstrictors. These data indicate that increased nutritive blood flow enhances the exchange of glucose and lactate by improving the supply of glucose to and the removal of lactate from the interstitium.
Hydration index and hydrated constitutive model of clay shale using acoustic frequency spectrum
Publisher: Wiley
Date: 19-06-2019
DOI: 10.1002/ESE3.388
Numerical simulation of gas flow through porous sandstone and its experimental validation
Publisher: Elsevier BV
Date: 02-2011
Laboratory simulation of flow through single fractured granite
Publisher: Springer Science and Business Media LLC
Date: 16-07-2015
Mechanical Characterization of Low Permeable Siltstone under Different Reservoir Saturation Conditions: An Experimental Study
Publisher: MDPI AG
Date: 21-12-2018
DOI: 10.3390/EN12010014
Abstract: Hydro-fracturing is a common production enhancement technique used in unconventional reservoirs. However, an effective fracturing process requires a precise understanding of a formation’s in-situ strength behavior, which is mainly dependent on the formation’s in-situ stresses and fluid saturation. The aim of this study is to identify the effect of brine saturation (concentration and degree of saturation (DOS)) on the mechanical properties of one of the common unconventional reservoir rock types, siltstone. Most common type of non-destructive test: acoustic emission (AE) was used in conjunction with the destructive tests to investigate the rock properties. Unconfined compressive strength (UCS) and splitting tensile strength (STS) experiments were carried out for 78 varyingly saturated specimens utilizing ARAMIS (non-contact and material independent measuring system) and acoustic emission systems to determine the fracture propagation. According to the experimental results, the increase in degree of pore fluid saturation (NaCl ionic solution) causes siltstone’s compressive and tensile strengths to be reduced through weakening and breakage of the existing bonding between clay minerals. However, increasing NaCl concentration in the pore fluid generally enhances the compressive strength of siltstone through associated NaCl crystallization effect and actually reduces the tensile strength of siltstone through the corrosive influence of the NaCl ions. Moreover, results show that AE capture and analysis is one of the most effective methods to understand crack propagation behavior in rocks including the crack initiation, crack propagation, and final failure. The findings of this study are important for the identification of fluid saturation dependent in-situ strength conditions for successful hydro-fracturing in low permeable reservoirs.
Obtaining lightweight concrete using colemanite waste and acidic pumice
Publisher: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Date: 2016
DOI: 10.5277/PPMP160103
Hydraulic fracturing under high temperature and pressure conditions with micro CT applications: Geothermal energy from hot dry rocks
Publisher: Elsevier BV
Date: 10-2018
Stress analysis of cemented wellbores in geosequestration of carbon dioxide
Publisher: CRC Press
Date: 26-11-2013
DOI: 10.1201/B15320-117
Fracture analysis of marble specimens with a hole under uniaxial compression by digital image correlation
Publisher: Elsevier BV
Date: 10-2017
Energy monitoring and analysis during deformation of bedded-sandstone: Use of acoustic emission
Publisher: Elsevier BV
Date: 2014
DOI: 10.1016/J.ULTRAS.2013.06.015
Abstract: This paper investigates the mechanical behaviour and energy releasing characteristics of bedded-sandstone with bedding layers in different orientations, under uniaxial compression. Cylindrical sandstone specimens (54 mm diameter and 108 mm height) with bedding layers inclined at angles of 10°, 20°, 35°, 55°, and 83° to the minor principal stress direction, were produced to perform a series of Uniaxial Compressive Strength (UCS) tests. One of the two identical s le sets was fully-saturated with water before testing and the other set was tested under dry conditions. An acoustic emission system was employed in all the testing to monitor the acoustic energy release during the whole deformation process of specimens. From the test results, the critical joint orientation was observed as 55° for both dry and saturated s les and the peak-strength losses due to water were 15.56%, 20.06%, 13.5%, 13.2%, and 13.52% for the bedding orientations 10°, 20°, 35°, 55°, and 83°, respectively. The failure mechanisms for the specimens with bedding layers in 10°, 20° orientations showed splitting type failure, while the specimens with bedding layers in 55°, 83° orientations were failed by sliding along a weaker bedding layer. The failure mechanism for the specimens with bedding layers in 35° orientation showed a mixed failure mode of both splitting and sliding types. Analysis of the acoustic energy, captured from the acoustic emission detection system, revealed that the acoustic energy release is considerably higher in dry specimens than that of the saturated specimens at any bedding orientation. In addition, higher energy release was observed for specimens with bedding layers oriented in shallow angles (which were undergoing splitting type failures), whereas specimens with steeply oriented bedding layers (which were undergoing sliding type failures) showed a comparatively less energy release under both dry and saturated conditions. Moreover, a considerable amount of energy dissipation before the ultimate failure was observed for specimens with bedding layers oriented in shallow angles under both dry and saturated conditions. These results confirm that when rock having bedding layers inclined in shallow angles the failures could be more violent and devastative than the failures of rock with steeply oriented bedding layers.
Two Methods for Engaging with the Community in Setting Priorities for Child Health Research: Who Engages?
Publisher: Public Library of Science (PLoS)
Date: 04-05-2015
An integrated approach to simulate fracture permeability and flow characteristics using regenerated rock fracture from 3-D scanning: A numerical study
Publisher: Elsevier BV
Date: 05-2018
An influence of thermally-induced micro-cracking under cooling treatments: Mechanical characteristics of Australian granite
Publisher: MDPI AG
Date: 24-05-2018
DOI: 10.3390/EN11061338
A study of methodologies for CO2 storage capacity estimation of coal
Publisher: Elsevier BV
Date: 2012
A laboratory-scale study of the aqueous mineral carbonation of coal fly ash for CO2 sequestration
Publisher: Elsevier BV
Date: 09-0009
Influences of test method and loading history on permeability of tight reservoir rocks
Publisher: Elsevier BV
Date: 03-2020
Experimental investigation of geochemical and mineralogical effects of CO2 sequestration on flow characteristics of reservoir rock in deep saline aquifers
Publisher: Springer Science and Business Media LLC
Date: 20-01-2016
DOI: 10.1038/SREP19362
Abstract: Interactions between injected CO 2 , brine and rock during CO 2 sequestration in deep saline aquifers alter their natural hydro-mechanical properties, affecting the safety and efficiency of the sequestration process. This study aims to identify such interaction-induced mineralogical changes in aquifers and in particular their impact on the reservoir rock’s flow characteristics. Sandstone s les were first exposed for 1.5 years to a mixture of brine and super-critical CO 2 (scCO 2 ), then tested to determine their altered geochemical and mineralogical properties. Changes caused uniquely by CO 2 were identified by comparison with s les exposed over a similar period to either plain brine or brine saturated with N 2 . The results show that long-term reaction with CO 2 causes a significant pH drop in the saline pore fluid, clearly due to carbonic acid (as dissolved CO 2 ) in the brine. Free H + ions released into the pore fluid alter the mineralogical structure of the rock formation, through the dissolution of minerals such as calcite, siderite, barite and quartz. Long-term CO 2 injection also creates a significant CO 2 drying-out effect and crystals of salt ( NaCl ) precipitate in the system, further changing the pore structure. Such mineralogical alterations significantly affect the saline aquifer’s permeability, with important practical consequences for the sequestration process.
Mechanical properties of reconstituted Australian black coal
Publisher: American Society of Civil Engineers (ASCE)
Date: 07-2009
Effect of sample size on the fluid flow through a single fractured granitoid
Publisher: Elsevier BV
Date: 06-2016
A new parameter to describe the persistency of non-persistent joints
Publisher: Elsevier BV
Date: 10-2014
The Taguchi approach to the evaluation of the influence of different testing conditions on the mechanical properties of rock
Publisher: Springer Science and Business Media LLC
Date: 12-12-2013
A Coupled Thermal–Hydrological–Mechanical Damage Model and Its Numerical Simulations of Damage Evolution in APSE
Publisher: MDPI AG
Date: 31-10-2016
DOI: 10.3390/MA9110841
Development and experimental validation of a computational fluid dynamics-discrete element method sand production model
Publisher: Elsevier BV
Date: 2020
A parametric study to investigate the effect of injection and production well operation on the CO2 sequestration process in deep unmineable coal seams
Publisher: CRC Press
Date: 15-09-2012
DOI: 10.1201/B11646-255
Modelling of intact and jointed mudstone samples under uniaxial and triaxial compression
Publisher: Springer Science and Business Media LLC
Date: 17-11-2011
Temperature-dependent mechanical behaviour of Australian Strathbogie granite with different cooling treatments
Publisher: Elsevier BV
Date: 11-2017
Mechanical behaviour of wellbore materials saturated in brine water with different salinity levels
Publisher: Elsevier BV
Date: 03-2014
Strength of geopolymer cured in saline water in ambient conditions
Publisher: Elsevier BV
Date: 05-2013
Characterization of coal porosity and permeability evolution by demineralisation using image processing techniques: A micro-computed tomography study
Publisher: Elsevier BV
Date: 08-2018
Applicability of the 'cubic law' for non-Darcian fracture flow
Publisher: Elsevier BV
Date: 08-2011
Flow behaviour of fractured geothermal reservoir rocks under in-situ stress and temperature conditions
Publisher: Springer International Publishing
Date: 2018
Finite element simulation of fluid flow in fractured rock media
Publisher: Springer Science and Business Media LLC
Date: 11-07-2010
A clean and sustainable CO2 storage method in construction materials
Publisher: Springer Science and Business Media LLC
Date: 20-09-2022
DOI: 10.1007/S40948-022-00469-0
Abstract: Production of building materials emits 11% of global carbon dioxide (CO 2 ) emission. The greenhouse gas emission from the construction industry has been tried to mininmize from early 1980s but after four decades of development, it is not fully sustainable. Cement is the second most consumed material in the world, after water and cement production contributes for 8% of global CO 2 emission. We produced a greener cement from abundantly available waste: fly ash, blast furnace lag, and rice husk ash to significantly minimize the greenhouse gas emission. Discarded aluminium foil becomes one of most landfilling waste that has high potential for recycling. On other hand, cement carbonation is a curing method that stores significant amount of CO 2 into cement with lesser cost and energy compared to commercial carbon sequestration. Therefore, we incorporate aluminium foil waste and CO 2 waste from industry to improve the engineering and environmental performance of the cement. We compared changes in carbonation when using gaseous carbon dioxide (gCO 2 ) and supercritical carbon dioxide (scCO 2 ) and found that the scCO 2 condition achieves higher compressive strength and yielded a stronger barrier against leaching. Hence, this carbon cured cement can be widely used in underground applications, where the heavy metal leaching is a critical issue. Projections show our greener cement reducing CO 2 emission by 55% compared to Portland cement and reducing direct costs by 35%. Also, our cement ultimately reduces hydrogen gas demand by recycling aluminium, which releases pure hydrogen during the production process, and this effect reduces annual CO 2 emission by 35 million tonnes from this hydrogen production alone. Adopted globally, the system would permanently store 72 million tonnes of CO 2 in a stable composite annually. On whole, our cement production significantly reduces the energy requirement for cement manufacturing and releases future energy, hydrogen gas, as by product.
CT Identification and Fractal Characterization of 3-D Propagation and Distribution of Hydrofracturing Cracks in Low-Permeability Heterogeneous Rocks
Publisher: American Geophysical Union (AGU)
Date: 03-2018
DOI: 10.1002/2017JB015048
Estimation of gas adsorption capacity in coal: A review and an analytical study
Publisher: Informa UK Limited
Date: 2012
Mechanical behaviour of Australian Strathbogie granite under in-situ stress and temperature conditions: An application to geothermal energy extraction
Publisher: Elsevier BV
Date: 2017
A review of studies on CO2 sequestration and caprock integrity
Publisher: Elsevier BV
Date: 10-2010
Effects of cleat performance on strength reduction of coal in CO2 sequestration
Publisher: Elsevier BV
Date: 09-2012
Coal cleat permeability for gas movement under triaxial, non-zero lateral strain condition: A theoretical and experimental study
Publisher: Elsevier BV
Date: 07-2013
Analysis of interfacial debonding of geopolymer annular sealing in CO 2 geo-sequestration wellbore
Publisher: Elsevier BV
Date: 2013
Review of application of molecular dynamic simulations in geological high-level radioactive waste disposal
Publisher: Elsevier BV
Date: 02-2019
Experimental investigation of the effects of heterogeneity and geostress difference on the 3D growth and distribution of hydrofracturing cracks in unconventional reservoir rocks
Publisher: Elsevier BV
Date: 09-2016
Effects of seam conditions, injection pressure and gas composition on CO2 sequestration in coal
Publisher: American Society of Civil Engineers
Date: 16-05-2011
DOI: 10.1061/47628(407)32
Implications of Joint Properties on the Strength of a Jointed Rock Mass
Publisher: American Society of Civil Engineers
Date: 16-05-2011
DOI: 10.1061/47628(407)33
Properties of well cement following carbonated brine exposure under HTHP conditions: A comparative study of alkali-activated and class G cements
Publisher: Elsevier BV
Date: 02-2022
An experimental and analytical study of the effects of shear displacement, fluid type, joint roughness, shear strength, friction angle and dilation angle on proppant embedment development in tight gas
Publisher: Elsevier BV
Date: 07-2018
A study of CO2 storage capacity estimation under supercritical conditions
Publisher: American Society of Civil Engineers
Date: 16-05-2011
DOI: 10.1061/47628(407)31
The Hydration and Volume Expansion Mechanisms of Modified Expansive Cements for Sustainable In-Situ Rock Fragmentation: A Review
Publisher: MDPI AG
Date: 20-09-2021
DOI: 10.3390/EN14185965
Abstract: This review provides the hydration and volume expansion mechanism of expansive materials, with the goal of utilizing them in the development of sustainable mining methods. The main focus of the review will be the newly developed non-destructible rock fragmentation method, slow releasing energy material agent (SREMA), which is a modified soundless chemical demolition agent (SCDA). The review aims to address one of the main gaps in studies related to SREMA, by presenting a thorough understanding of the components of SREMA and their mechanisms of action, leading to volume expansion. Thus, this review would act as a guide for researchers working on using expansive materials for rock breaking. As many literatures have not been published regarding the recently discovered SREMA, studies on cements, expansive cements, and soundless chemical demolition agents (SCDA) were mainly considered. The chemical reactions and volume expansive processes of these materials have been studied and incorporated with the additives included in SREMA, to understand its behavior. Literature containing experimental studies analyzing the heat of hydration and microstructural changes have been mostly considered along with some of the heavily discussed hypotheses regarding the hydration of certain components, to predict the volume expansive mechanism of SREMA. Studies related to SREMA and other similar materials have shown drastic changes in the heats of hydration as the composition varies. Thus, SREMA has the capability of giving a wider range of expansive energies in erse environmental conditions
Comparison of CO2 flow behavior through intact siltstone sample under tri-axial steady-state and transient flow conditions
Publisher: MDPI AG
Date: 05-07-2018
DOI: 10.3390/APP8071092
Experimental investigation of primary-wave velocities and constrained moduli of quartz sand subjected to extender element tests and stress anisotropy
Publisher: Springer Science and Business Media LLC
Date: 22-02-2017
Simulation of flow behaviour through fractured unconventional gas reservoirs considering the formation damage caused by water-based fracturing fluids
Publisher: Elsevier BV
Date: 09-2018
Prediction of preferential fluid flow in porous structures based on topological network models: Algorithm and experimental validation
Publisher: Springer Science and Business Media LLC
Date: 02-2018
Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression
Publisher: Springer Science and Business Media LLC
Date: 14-08-2015
Effects of strain rate on fracture toughness and energy release rate of gas shales
Publisher: Elsevier BV
Date: 02-2017
An experimental study on tensile characteristics of granite rocks exposed to different high-temperature treatments
Publisher: Springer Science and Business Media LLC
Date: 2019
The use of coal combustion fly ash as a soil amendment in agricultural lands (with comments on its potential to improve food security and sequester carbon)
Publisher: Elsevier BV
Date: 07-2013
A Pore-Scale Simulation on Thermal-Hydromechanical Coupling Mechanism of Rock
Publisher: Hindawi Limited
Date: 2017
DOI: 10.1155/2017/7510527
Abstract: Thermal-hydromechanical (THM) coupling process is a key issue in geotechnical engineering emphasized by many scholars. Most existing studies are conducted at macroscale or mesoscale. This paper presents a pore-scale THM coupling study of the immiscible two-phase flow in the perfect-plastic rock. Assembled rock matrix and pore space models are reconstructed using micro-CT image. The rock deformation and fluid flow are simulated using ANSYS and CFX software, respectively, in which process the coupled physical parameters will be exchanged by ANSYS multiphysics platform at the end of each iteration. Effects of stress and temperature on the rock porosity, permeability, microstructure, and the displacing mechanism of water flooding process are analyzed and revealed.
Failure mechanical behavior of Australian Strathbogie granite at high temperatures
Publisher: MDPI AG
Date: 28-05-2017
DOI: 10.3390/EN10060756
Thermal conductivity of soils and rocks from the Melbourne (Australia) region
Publisher: Elsevier BV
Date: 09-2013
An experimental evaluation of unique CO2 flow behaviour in loosely held fine particles rich sandstone under deep reservoir conditions and influencing factors
Publisher: Elsevier BV
Date: 2017
Quantitative Analysis of Micro-structural Changes in a Bituminous Coal After Exposure to Supercritical CO2 and Water
Publisher: Springer Science and Business Media LLC
Date: 31-01-2019
Experimental investigation of the influence of strain rate on strength; failure attributes and mechanism of Jhiri shale
Publisher: Elsevier BV
Date: 10-2018
A Novel Testing Apparatus for Hydromechanical Investigation of Rocks: Geo-Sequestration of Carbon dioxide
Publisher: Springer Science and Business Media LLC
Date: 23-03-2012
An experimental study to quantify sand production during oil recovery from unconsolidated quicksand formations
Publisher: Elsevier BV
Date: 10-2017
A novel approach to precise evaluation of carbon dioxide flow behaviour in siltstone under tri-axial drained conditions
Publisher: Elsevier BV
Date: 08-2016
Time-dependent strength and mineralogy of lime-GGBS treated naturally occurring acid sulfate soils
Publisher: American Society of Civil Engineers (ASCE)
Date: 2016
Application of neural networks and fuzzy systems for the intelligent prediction of CO2 -induced strength alteration of coal
Publisher: Elsevier BV
Date: 03-2019
CO2 permeability of Indian bituminous coals: Implications for carbon sequestration
Publisher: Elsevier BV
Date: 2013
A low energy rock fragmentation technique for in-situ leaching
Publisher: Elsevier BV
Date: 12-2018
Effect of Intermediate Principal Stress on the Strength, Deformation, and Permeability of Sandstone
Publisher: MDPI AG
Date: 10-10-2018
DOI: 10.3390/EN11102694
Abstract: Although the mechanical behaviors and flow aspects of sandstone have been previously investigated, studies of the effect of the intermediate principal stress (σ2) on the strength, deformation, and permeability of sandstone are lacking. In this work, the mechanical behaviors and permeability of sandstone under true triaxial stress conditions were investigated using a newly developed true triaxial geophysical apparatus. The experimental results showed that with increasing σ2, the peak strength, octahedral effective normal stress, and octahedral effective shear stress of the sandstone increased, and the rate of increase decreased. This is because a larger intermediate principal stress coefficient b has an inhibitory effect on rock strength. In our study, as the ratio of σ2/σ3 increased, the specimen entered compressive strain in the σ2 direction during the first stress drop. The stress and strain path deviations occur during rock failure. The amount of deviation increased as the σ2 increased before the peak stress. This phenomenon indicates that elastic mechanics are not suitable for understanding this sandstone rock during its failure. The permeability evolution of the sandstone under true triaxial stress conditions was measured and analyzed to investigate the effect of σ2. During the complete true triaxial stress-strain experiments, the variation we found in gas seepage velocity could be ided into two stages. Before the first pressure drop, the gas seepage velocity was mainly affected by volume strain. After the first pressure drop, the seepage velocity was affected by the deviator strain, which can change the seepage channels.
The brittleness indices used in rock mechanics and their application in shale hydraulic fracturing: A review
Publisher: Elsevier BV
Date: 07-2016
A novel computational approach for large deformation and post-failure analyses of segmental retaining wall systems
Publisher: Wiley
Date: 15-02-2014
DOI: 10.1002/NAG.2253
Two-phase (air and water) flow through rock joints: Analytical and experimental study
Publisher: American Society of Civil Engineers (ASCE)
Date: 10-2003
A numerical study of CO2 flow through geopolymer under down-hole stress conditions: Application for CO2 sequestration wells
Publisher: Elsevier BV
Date: 09-2014
Multi-scale quantitative characterization of 3-D pore-fracture networks in bituminous and anthracite coals using FIB-SEM tomography and X-ray Μ-CT
Publisher: Elsevier BV
Date: 12-2017
Development of a reconstituted brown coal material using cement as a binder
Publisher: Springer Science and Business Media LLC
Date: 14-12-2011
Trajectories of interparental conflict and children’s emotional–behavioural functioning at 10–11 years: an Australian population-based study
Publisher: Springer Science and Business Media LLC
Date: 05-01-2022
DOI: 10.1007/S00787-020-01700-7
Abstract: Interparental conflict (IPC) has the potential to adversely affect children's social, emotional, and behavioural functioning. The overall objective of this study was to investigate the relationship between both the severity and chronicity of IPC across early and middle childhood and children's emotional-behavioural functioning at 10-11 years. Specifically, we aimed to: (1) identify distinct trajectories of IPC spanning 10-11 years since birth of the study child as reported by mothers, and (2) examine the emotional-behavioural functioning of children exposed to the identified IPC trajectories. Drawing from a nationally representative longitudinal study of Australian families (N = 4875), four distinct trajectories of IPC were identified: (1) consistently low exposure to IPC over time, (2) persistently elevated exposure to IPC, (3) increasing IPC exposure over time, and (4) decreasing IPC exposure over time. Children exposed to trajectories with high IPC at any point during the study period were reported by their mothers to be experiencing more emotional-behavioural difficulties than children exposed to low IPC over time. Based on teacher report, there were no differences in emotional-behavioural functioning of children exposed to the different patterns of IPC. Our findings reinforce that high parental conflict at any point in a child's life is a form of adversity that can have adverse consequences for their mental health, and that early interventions for parents and caregivers experiencing high IPC are critical.
CO2 permeability of fractured coal subject to confining pressures and elevated temperature
Publisher: Springer Science and Business Media LLC
Date: 16-11-2016
Effect of coal maturity on CO2 -based hydraulic fracturing process in coal seam gas reservoirs
Publisher: Elsevier BV
Date: 2019
Permeability of sub-critical carbon dioxide in naturally fractured Indian bituminous coal at a range of down-hole stress conditions
Publisher: Elsevier BV
Date: 12-2013
The Influence of Admixtures on the Hydration Process of Soundless Cracking Demolition Agents (SCDA) for Fragmentation of Saturated Deep Geological Reservoir Rock Formations
Publisher: Springer Science and Business Media LLC
Date: 10-2018
Effects of gaseous and super-critical carbon dioxide saturation on the mechanical properties of bituminous coal from the Southern Sydney Basin
Publisher: Elsevier BV
Date: 10-2013
Experimental study of effects of shearing on proppant embedment behaviour of tight gas sandstone reservoirs
Publisher: Elsevier BV
Date: 2019
Parameters influencing the flow performance of natural cleat systems in deep coal seams experiencing carbon dioxide injection and sequestration
Publisher: Elsevier BV
Date: 12-2012
Theoretical overview of hydraulic fracturing break-down pressure
Publisher: Elsevier BV
Date: 10-2018
A new model based on gene expression programming to estimate air flow in a single rock joint
Publisher: Springer Science and Business Media LLC
Date: 25-04-2016
Failure mechanical and acoustic behavior of brine saturated-sandstone containing two pre-existing flaws under different confining pressures
Publisher: Elsevier BV
Date: 04-2018
Simulating flow through fractures in a rock mass using analog material
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2014
Temperature Effect on the Thermal Conductivity of Black Coal
Publisher: American Chemical Society (ACS)
Date: 04-04-2018
Assessment of dynamic material properties of intact rocks using seismic wave attenuation: an experimental study
Publisher: The Royal Society
Date: 10-2017
DOI: 10.1098/RSOS.170896
Abstract: The mechanical properties of any substance are essential facts to understand its behaviour and make the maximum use of the particular substance. Rocks are indeed an important substance, as they are of significant use in the energy industry, specifically for fossil fuels and geothermal energy. Attenuation of seismic waves is a non-destructive technique to investigate mechanical properties of reservoir rocks under different conditions. The attenuation characteristics of five different rock types, siltstone, shale, Australian sandstone, Indian sandstone and granite, were investigated in the laboratory using ultrasonic and acoustic emission instruments in a frequency range of 0.1–1 MHz. The pulse transmission technique and spectral ratios were used to calculate the attenuation coefficient ( α ) and quality factor ( Q ) values for the five selected rock types for both primary ( P ) and secondary ( S ) waves, relative to the reference steel s le. For all the rock types, the attenuation coefficient was linearly proportional to the frequency of both the P and S waves. Interestingly, the attenuation coefficient of granite is more than 22% higher than that of siltstone, sandstone and shale for both P and S waves. The P and S wave velocities were calculated based on their recorded travel time, and these velocities were then used to calculate the dynamic mechanical properties including elastic modulus ( E ), bulk modulus ( K ), shear modulus ( µ ) and Poisson's ratio ( ν ). The P and S wave velocities for the selected rock types varied in the ranges of 2.43–4.61 km s −1 and 1.43–2.41 km h −1 , respectively. Furthermore, it was observed that the P wave velocity was always greater than the S wave velocity, and this confirmed the first arrival of P waves to the sensor. According to the experimental results, the dynamic E value is generally higher than the static E value obtained by unconfined compressive strength tests.
Investigation of temperature effect on permeability of naturally fractured black coal for carbon dioxide movement: An experimental and numerical study
Publisher: Elsevier BV
Date: 04-2012
An experimental study on behavior of reconstituted low-rank coal under different fluid saturations
Publisher: CRC Press
Date: 29-07-2016
Investigation on temperature dependent mechanical behaviour of Australian granite
Publisher: CRC Press
Date: 29-07-2016
Geothermal energy resources of Jizan, SW Saudi Arabia
Publisher: Elsevier BV
Date: 09-2015
Failure Characteristics of Granite Influenced by Sample Height-to-Width Ratios and Intermediate Principal Stress Under True-Triaxial Unloading Conditions
Publisher: Springer Science and Business Media LLC
Date: 02-2018
An experimental study on mechanical behaviour of siltstone under brine saturation
Publisher: CRC Press
Date: 29-07-2016
Numerical Modelling of Laboratory Behaviour of Single Laterally Loaded Piles Socketed into Jointed Rocks
Publisher: Research Publishing Services
Date: 2009
Transfers of disadvantage across three generations using latent class associations within families
Publisher: Wiley
Date: 02-03-2022
DOI: 10.1002/AJS4.206
Abstract: There is a large volume of research on the persistence of advantage and disadvantage across generations. Intergenerational studies typically address family resources as independent factors, which ignores how risks cluster together and accumulate over time. Using data from the Longitudinal Study of Australian Children, we conducted two latent class analyses to separately identify latent classes based on grandparent and parent characteristics for study children. We then examined the association between our identified latent classes and grandchild educational outcomes in Years 3 to 9. Five distinct latent classes of grandparent characteristics and four latent classes of parent characteristics were identified. There was association between parent and grandparent latent classes indicating intergenerational multiple disadvantage. Grandchildren in at‐risk parent latent classes tended to have significantly lower literacy and numeracy scores from Years 3 to 9. The effects of grandparent latent classes were inconsistent. The developmental circumstances of children can be defined using the characteristics of both parents and grandparents, and the role of grandparents on children's development extends beyond the influence they have on parent outcomes. This study highlights that addressing intergenerational transfers of disadvantage requires multiple, integrated and coordinated policy approaches that go beyond in idual indicators of disadvantage.
Effect of temperature on permeability of geopolymer: A primary well sealant for carbon capture and storage wells
Publisher: Elsevier BV
Date: 2014
Understanding and application of CO2 adsorption capacity estimation models for coal types
Publisher: Elsevier BV
Date: 04-2014
Opportunities and Challenges in Deep Mining: A Brief Review
Publisher: Elsevier BV
Date: 08-2017
Experimental investigation on the mechanical properties of a low-clay shale with different adsorption times in sub-/super-critical CO2
Publisher: Elsevier BV
Date: 03-2018
Carbon dioxide sequestration effects on coal's hydro-mechanical properties: A review
Publisher: Hindawi Limited
Date: 14-06-2012
DOI: 10.1002/ER.2921
An insight into pore-network models of high-temperature heat-treated sandstones using computed tomography
Publisher: Elsevier BV
Date: 05-2020
Thermal-Diffusivity and Heat-Capacity Measurements of Sandstone at High Temperatures Using Laser Flash and DSC Methods
Publisher: Springer Science and Business Media LLC
Date: 21-01-2015
G4: inaugural editorial
Publisher: Springer Science and Business Media LLC
Date: 08-2015
Effects of coring directions on the mechanical properties of Chinese shale
Publisher: Springer Science and Business Media LLC
Date: 06-06-2015
Investigation of the potential of coal combustion fly ash for mineral sequestration of CO2 by accelerated carbonation
Publisher: Elsevier BV
Date: 04-2013
The effects of injection and production well arrangement on carbon dioxide sequestration in deep, unmineable coal seams: A numerical study
Publisher: Informa UK Limited
Date: 09-2012
Improved understanding of proppant embedment behavior under reservoir conditions: A review study
Publisher: Elsevier BV
Date: 06-2019
Non-linear stress-strain behaviour of reservoir rock under brine saturation: An experimental study
Publisher: Elsevier BV
Date: 07-2015
A Damage Constitutive Model for the Effects of CO2-Brine-Rock Interactions on the Brittleness of a Low-Clay Shale
Publisher: Hindawi Limited
Date: 30-05-2018
DOI: 10.1155/2018/7321961
Abstract: CO 2 is a very promising fluid for drilling and nonaqueous fracturing, especially for CO 2 -enhanced shale gas recovery. Brittleness is a very important characteristic to evaluate the drillability and fracability. However, there is not much relevant research works on the influence of CO 2 and CO 2 -based fluids on shale’s brittleness been carried out. Therefore, a series of strength tests were conducted to obtain the stress-strain characteristics of shale soaked in different phases of CO 2 including subcritical or supercritical CO 2 with formation of water for different time intervals (10 days, 20 days, and 30 days). Two damage constitutive equations based on the power function distribution and Weibull distribution were established to predict the threshold stress for both intact and soaked shale s les. Based on the results, physical and chemical reactions during the imbibition cause reductions of shales’ peak axial strength (20.79%~61.52%) and Young’s modulus (13.14%~62.44%). Weibull distribution-based constitutive model with a damage threshold value of 0.8 has better agreement with the experiments than that of the power function distribution-based constitutive model. The energy balance method together with the Weibull distribution-based constitutive model is applied to calculate the brittleness values of s les with or without soaking. The intact shale s le has the highest B I value of 0.9961, which is in accordance with the high percentage of brittleness minerals of the shale s les. The CO 2 -NaCl-shale interactions during the imbibition decrease the brittleness values. Among the three soaking durations, the minimum brittleness values occur on s les with 20 days’ imbibition in subcritical and supercritical CO 2 + NaCl solutions and the reductions of which are 2.08% and 2.49%, respectively. Subcritical/supercritical CO 2 + NaCl imbibition has higher effect on shale’s strength and Young’s modulus than on the brittleness. The low-clay shale still keeps good fracture performance after imbibition.
Metal concentrations and metal mobility in unsaturated mine wastes in mining areas of Goa, India
Publisher: Elsevier BV
Date: 05-2009
Simulation of CO2 enhanced coalbed methane recovery in Jharia coalfields, India
Publisher: Elsevier BV
Date: 09-2018
Discussions on correction of Goodman jack test
Publisher: ASTM International
Date: 12-01-2017
DOI: 10.1520/GTJ20160121
Development of a laboratory-scale numerical model to simulate the mechanical behaviour of deep saline reservoir rocks under varying salinity conditions in uniaxial and triaxial test environments
Publisher: Elsevier BV
Date: 04-2017
Influence of the geometry of partially-spanning joints on the uniaxial compressive strength of rock
Publisher: Elsevier BV
Date: 02-2012
Study of crack propagation in concrete under multiple loading rates by acoustic emission
Publisher: Springer Science and Business Media LLC
Date: 14-07-2017
Geological and geotechnical aspects of underground coal mining methods within Australia
Publisher: Springer Science and Business Media LLC
Date: 05-08-2010
3D modeling of stratified and irregularly jointed rock slope and its progressive failure
Publisher: Springer Science and Business Media LLC
Date: 05-05-2012
A study of the effect of displacement rate and moisture content on the mechanical properties of concrete: Use of acoustic emission
Publisher: Elsevier BV
Date: 06-2008
Experimental Investigation of Mechanical Properties of Black Shales after CO2-Water-Rock Interaction
Publisher: MDPI AG
Date: 06-08-2016
DOI: 10.3390/MA9080663
CO<inf>2</inf>-induced mechanical behaviour of Hawkesbury sandstone in the Gosford basin: An experimental study
Publisher: Elsevier BV
Date: 08-2015
Investigation of the mechanical, microstructural and mineralogical morphology of soundless cracking demolition agents during the hydration process
Publisher: Elsevier BV
Date: 08-2017
Nonlinear single-phase flow in real rock joints
Publisher: American Geophysical Union (AGU)
Date: 09-2007
DOI: 10.1029/2006WR005457
An experimental investigation into the drilling and physico-mechanical properties of a rock-like brittle material
Publisher: Elsevier BV
Date: 03-2011
Application of nanoindentation technology in rocks: a review
Publisher: Springer Science and Business Media LLC
Date: 09-10-2020
Sub- and super-critical carbon dioxide permeability of wellbore materials under geological sequestration conditions: An experimental study
Publisher: Elsevier BV
Date: 06-2013
Sand production during the extrusion of hydrocarbons from geological formations: A review
Publisher: Elsevier BV
Date: 12-2014
Direct evidence of CO2 softening effects on coal using nanoindentation
Publisher: Elsevier BV
Date: 09-2022
Multi-Step Loading Creep Behavior of Red Sandstone after Thermal Treatments and a Creep Damage Model
Publisher: MDPI AG
Date: 16-01-2018
DOI: 10.3390/EN11010212
In Situ Synchrotron X‐Ray Microtomography Observations of Fracture Network Evolution of Coal Due to Waterflooding
Publisher: American Geophysical Union (AGU)
Date: 11-05-2020
DOI: 10.1029/2020GL087375
Abstract: Water adsorption on coal plays a significant role in the process of CO 2 sequestration and enhanced coalbed methane recovery. Direct evidence of how coal adsorbs water and swells, affecting permeability, is still limited. Here, we studied the impact of waterflooding on fracture networks in coal by means of in situ synchrotron X‐ray microtomography combined with permeability measurements. We demonstrated that swelling‐induced fracture closure was responsible for an order of magnitude permeability reduction after waterflooding for over 4 days. Permeability loss was found to be time dependent, following a logistic function, and about 80% permeability reduction happened in the first 24 hr. There were probably three driven forces for water uptake, including hydrodynamic forces in fractures and macropores, capillary forces in micropores, and diffusion from micropores into deeper coal matrix. Swelling of coal matrix narrowed down and even closed the fractures and as a result weakened fracture connectivity. Residual fractures were mainly mineral‐supported fractures, which have strong resistance to swelling‐induced stresses.
The eovlution of rock failure with discontinuities due to shear creep
Publisher: Springer Science and Business Media LLC
Date: 26-05-2013
Stress sensitivity of medium- and high volatile bituminous coal: An experimental study based on nuclear magnetic resonance and permeability-porosity tests
Publisher: Elsevier BV
Date: 2019
Analytical assessment of horizontal well efficiency with reference to improved oil recovery of the South-East Dragon oil field southern offshore of Vietnam
Publisher: Elsevier BV
Date: 06-2009
On covert channels between virtual machines
Publisher: Springer Science and Business Media LLC
Date: 15-06-2012
The effect of specimen size on strength and other properties in laboratory testing of rock and rock-like cementitious brittle materials
Publisher: Springer Science and Business Media LLC
Date: 17-06-2011
Numerical and experimental study of strata behavior and land subsidence in an underground coal gasification project
Publisher: Copernicus GmbH
Date: 12-11-2015
DOI: 10.5194/PIAHS-372-455-2015
Abstract: Abstract. Underground Coal Gasification, with enhanced knowledge of hydrogeological, geomechanical and environmental aspects, can be an alternative technique to exploit the existing unmineable reserves of coal. During the gasification process, petro-physical and geomechanical properties undergo a drastic change due to heating to elevated temperatures. These changes, caused due to the thermal anisotropy of various minerals, result in the generation of thermal stresses thereby developing new fracture pattern. These fractures cause the overhead rock strata to cave and fill the gasification chamber thereby causing subsidence. The degree of subsidence, change in fluid transport and geomechanical properties of the rock strata, in and around the subsidence zone, can affect the groundwater flow. This study aims to predict the thermo-geomechanical response of the strata during UCG. Petro-physical and geomechanical properties are incorporated in the numerical modelling software COMSOL Multiphysics and an analytical strength model is developed to validate and further study the mechanical response and heat conduction of the host rock around the gasification chamber. Once the problems are investigated and solved, the enhanced efficiency and the economic exploitation of gasification process would help meet country's energy demand.
Numerical Modeling of Jointed Rock Under Compressive Loading Using X-ray Computerized Tomography
Publisher: Springer Science and Business Media LLC
Date: 11-08-2016
Laboratory measurement of deformation-induced hydro-mechanical properties of reservoir rock in deep saline aquifers: An experimental study of Hawkesbury formation
Publisher: Elsevier BV
Date: 11-2016
Investigation of the effect of foam flow rate on foam-based hydraulic fracturing of shale reservoir rocks with natural fractures: An experimental study
Publisher: Elsevier BV
Date: 10-2018
Numerical simulation of foam-based hydraulic fracturing to optimise perforation spacing and to investigate effect of dip angle on hydraulic fracturing
Publisher: Elsevier BV
Date: 2019
Influence of sorption time in CO 2 -ECBM process in Indian coals using coupled numerical simulation
Publisher: Elsevier BV
Date: 2015
Thermomechanical behaviour of well cement in different geological formations under the coupled effects of temperature and pressure
Publisher: Elsevier BV
Date: 04-2023
Salinity-dependent strength and stress-strain characteristics of reservoir rocks in deep saline aquifers: An experimental study
Publisher: Elsevier BV
Date: 04-2014
A Mesh-Free Continuum Based Computational Approach to Modelling Rock Fracture
Publisher: American Society of Civil Engineers
Date: 06-07-2017
Hydro-mechanical behavior of sandstone with interconnected joints under undrained conditions
Publisher: Elsevier BV
Date: 06-2016
Properties of one-part fly ash/slag-based binders activated by thermally-treated waste glass/NaOH blends: A comparative study
Publisher: Elsevier BV
Date: 09-2020
An analytical thermo-poro-elasticity model for the mechanical responses of a wellbore and core during overcoring
Publisher: Elsevier BV
Date: 10-2017
Characterization of dynamic mechanical alterations of supercritical CO2 -interacted coal through gamma-ray attenuation, ultrasonic and X-ray computed tomography techniques
Publisher: Elsevier BV
Date: 03-2019
Effect of strain rate on strength properties of low-calcium fly-ash-based geopolymer mortar under dry condition
Publisher: Springer Science and Business Media LLC
Date: 08-01-2013
Specimen slenderness and the influence of joint orientation on the uniaxial compressive strength of singly jointed rock
Publisher: American Society of Civil Engineers (ASCE)
Date: 06-2014
Behaviour of Brittle Material in Multiple Loading Rates Under Uniaxial Compression
Publisher: Springer Science and Business Media LLC
Date: 21-04-2013
Laboratory-scale study on proppant behaviour in unconventional oil and gas reservoir formations
Publisher: Elsevier BV
Date: 06-2020
Characterization of Mechanical Behaviour of Saturated Sandstone Using a Newly Developed Triaxial Apparatus
Publisher: Springer Science and Business Media LLC
Date: 14-11-2012
Effect of cooling rate on the mechanical behavior of heated Strathbogie granite with different grain sizes
Publisher: Elsevier BV
Date: 09-2014
Effect of Varied Durations of Thermal Treatment on the Tensile Strength of Red Sandstone
Publisher: Springer Science and Business Media LLC
Date: 08-07-2016
Effects of effective stress changes on permeability of latrobe valley brown coal
Publisher: Elsevier BV
Date: 03-2011
Characterization of rock spatial modeling and quick identification of unstable blocks based on a digital photogrammetry
Publisher: American Society of Civil Engineers
Date: 16-05-2011
DOI: 10.1061/47631(410)30
An experimental investigation on behaviour of coal under fluid saturation, using acoustic emission
Publisher: Elsevier BV
Date: 2015
Studying the acoustic emission response of an Indian monumental sandstone under varying temperatures and strains
Publisher: Elsevier BV
Date: 04-2018
Do joint geometrical properties influence the fracturing behaviour of jointed rock? An investigation through joint orientation
Publisher: Springer Science and Business Media LLC
Date: 02-06-2015
School readiness is more than the child: a latent class analysis of child, family, school and community aspects of school readiness
Publisher: Wiley
Date: 12-10-2020
DOI: 10.1002/AJS4.138
Abstract: In this paper, we aim to contribute to the understanding of the multidimensional nature of school readiness. In a s le of over 4,000 Australian children in their first year of school, we used latent class analysis to examine patterns of school readiness based on child, family, school and community characteristics, and examine the relationship between these patterns of school readiness and subsequent outcomes (reading comprehension, school absence and emotional and behavioural difficulties). We identified four distinct groups: a Developmentally Enabled group (70 per cent of children), a Parenting Risk group (16 per cent of children), an Emotionally Immature Risk group (7 per cent of children) and a Language and Developmental Risks group (7 per cent of children). The four profiles showed differential patterns of association with low reading comprehension and emotional and behavioural difficulties at age 8, but no association with school absence. The study highlights the importance of family, school and community factors when considering school readiness.
CDEM-based analysis of the 3D initiation and propagation of hydrofracturing cracks in heterogeneous glutenites
Publisher: Elsevier BV
Date: 09-2016
A comparative study of generalized regression neural network approach and adaptive neuro-fuzzy inference systems for prediction of unconfined compressive strength of rocks
Publisher: Springer Science and Business Media LLC
Date: 28-04-2012
Life cycle assessment in the minerals and metals sector: A critical review of selected issues and challenges
Publisher: Springer Science and Business Media LLC
Date: 10-03-2009
Reuse of iron ore mineral wastes in civil engineering constructions: A case study
Publisher: Elsevier BV
Date: 09-2008
A study of safe CO2 storage capacity in saline aquifers: A numerical study
Publisher: Hindawi Limited
Date: 10-2013
DOI: 10.1002/ER.2954
Sub- and super-critical carbon dioxide flow behavior in naturally fractured black coal: An experimental study
Publisher: Elsevier BV
Date: 11-2011
Effect of different mix compositions on apparent carbon dioxide (CO2) permeability of geopolymer: Suitability as well cement for CO2 sequestration wells
Publisher: Elsevier BV
Date: 02-2014
Mechanism of the Two-Phase Flow Model for Water and Gas Based on Adsorption and Desorption in Fractured Coal and Rock
Publisher: Springer Science and Business Media LLC
Date: 15-11-2016
A modified, hydrophobic soundless cracking demolition agent for non-explosive demolition and fracturing applications
Publisher: Elsevier BV
Date: 10-2018
Stability of Borehole with Breakouts – An Experimental and Numerical Modelling Study
Publisher: Elsevier BV
Date: 05-2013
Effect of supercritical-CO2 interaction time on the alterations in coal pore structure
Publisher: Elsevier BV
Date: 04-2020
Interparental Conflict Across the Early Parenting Period: Evidence From Fathers Participating in an Australian Population-Based Study
Publisher: SAGE Publications
Date: 02-07-2022
DOI: 10.1177/0192513X211030042
Abstract: Current evidence about the prevalence of interparental conflict (IPC) during early parenthood is primarily based on mothers’ reports. Drawing upon Australian longitudinal data from 4136 fathers, the aims of the study were to: (a) report on the extent to which fathers report IPC across six biennial time intervals when their children were aged 6–12 months to 10–11 years, (b) identify trajectories of IPC over time and (c) identify postnatal factors (at the initial time point) associated with high risk trajectories of IPC. One in 10 fathers reported high IPC at each time interval. A high and increasing pattern of IPC was observed for 6% of fathers. Factors associated with this trajectory were fathers being from a non-English speaking background and high postnatal psychological distress reported by mothers and fathers. These findings underscore the importance of early intervention for some families experiencing IPC in the early years of their children’s lives.
Scale Effect on Strength and Failure Modes of Open Pit Cut Slope of Wardha Valley Coalfield in India
Publisher: American Society of Civil Engineers
Date: 29-03-2012
Experimental Investigation on Deformation Failure Characteristics of Crystalline Marble Under Triaxial Cyclic Loading
Publisher: Springer Science and Business Media LLC
Date: 06-07-2017
Effect of accelerated carbonation on the chemical properties and leaching behaviour of Australian coal fly ash, to improve its use as a compost amendment
Publisher: Springer Science and Business Media LLC
Date: 26-10-2016
Modified non-explosive expansive cement for preconditioning deep host rocks: A review
Publisher: Springer Science and Business Media LLC
Date: 21-10-2021
Determination of effective stress parameters for effective CO2 permeability in deep saline aquifers: An experimental study
Publisher: Elsevier BV
Date: 05-2015
The effects of sub-critical and super-critical carbon dioxide adsorption-induced coal matrix swelling on the permeability of naturally fractured black coal
Publisher: Elsevier BV
Date: 11-2011
Some key technical issues in modelling of gas transport process in shales: a review
Publisher: Springer Science and Business Media LLC
Date: 19-07-2016
Correlating index properties of rocks with P-wave measurements
Publisher: Elsevier BV
Date: 05-2010
Retained water content after nitrogen driving water on flooding saturated high volatile bituminous coal using low-field nuclear magnetic resonance
Publisher: Elsevier BV
Date: 09-2018
Hydraulic conductivity of biopolymer-treated silty sand
Publisher: Thomas Telford Ltd.
Date: 02-2009
A modified NX-borehole jack with flexible loading platens
Publisher: Elsevier BV
Date: 07-2016
Some aspects of unsaturated flow in jointed rock
Publisher: Elsevier BV
Date: 07-2002
Effects of saturation medium and pressure on strength parameters of Latrobe Valley brown coal: Carbon dioxide, water and nitrogen saturations
Publisher: Elsevier BV
Date: 12-2011
Complete triaxial stress-strain curves for geopolymer
Publisher: Elsevier BV
Date: 10-2014
Laboratory evaluation of flow properties of Niutitang shale at reservoir conditions
Publisher: Elsevier BV
Date: 05-2020
Experimental Investigation on the Mechanical Behavior of Victorian Brown Coal under Brine Saturation
Publisher: American Chemical Society (ACS)
Date: 12-04-2018
Numerical simulation of blasting-induced fracture expansion in coal masses
Publisher: Elsevier BV
Date: 12-2017
A new SPH-based continuum framework with an embedded fracture process zone for modelling rock fracture
Publisher: Elsevier BV
Date: 03-2019
The steel industry, abiotic resource depletion and life cycle assessment: A real or perceived issue?
Publisher: Elsevier BV
Date: 2011
Damage evolution and deformation behaviour of dry and saturated sandstones: Insights gleaned from optical measurements
Publisher: Elsevier BV
Date: 12-2018
Effects of testing method, lithology and fluid-rock interactions on shale permeability: A review of laboratory measurements
Publisher: Elsevier BV
Date: 06-2020
Artificial Fracture Stimulation of Rock Subjected to Large Isotropic Confining Stresses in Saline Environments: Application in Deep-Sea Gas Hydrate Recovery
Publisher: Springer Science and Business Media LLC
Date: 29-09-2018
Constitutive models describing the influence of the geometry of partially-spanning joints on jointed rock mass strength: Regression and fuzzy logic analysis of experimental data
Publisher: Elsevier BV
Date: 07-2012
Sub- and super-critical carbon dioxide flow variations in large high-rank coal specimen: An experimental study
Publisher: Elsevier BV
Date: 08-2019
Influence of CO2 -Brine Co-injection on CO2 Storage Capacity Enhancement in Deep Saline Aquifers: An Experimental Study on Hawkesbury Sandstone Formation
Publisher: American Chemical Society (ACS)
Date: 27-04-2016
Biochar Sequestration in Lime-Slag Treated Synthetic Soils: A Green Approach to Ground Improvement
Publisher: American Society of Civil Engineers (ASCE)
Date: 12-2014
Comparative Study of the Hydromechanical Behavior of Intact, Horizontally Jointed, and Vertically Jointed Rocks under Undrained Conditions
Publisher: American Society of Civil Engineers (ASCE)
Date: 09-2016
Quantification of CO2 Replacement in Methane Gas Hydrates: A Molecular Dynamics Perspective
Publisher: Elsevier BV
Date: 02-2022
Development and Assessment of Cumulative Risk Measures of Family Environment and Parental Investments in the Longitudinal Study of Australian Children
Publisher: Springer Science and Business Media LLC
Date: 13-03-2017
An experimental investigation on thermal damage and failure mechanical behavior of granite after exposure to different high temperature treatments
Publisher: Elsevier BV
Date: 2017
Steel-making slag for mineral sequestration of Carbon dioxide by accelerated carbonation
Publisher: Elsevier BV
Date: 02-2016
Effects of Pore Fluid Chemistry and Saturation Degree on the Fracability of Australian Warwick Siltstone
Publisher: MDPI AG
Date: 17-10-2018
DOI: 10.3390/EN11102795
Abstract: Fracability of unconventional gas reservoirs is an important parameter that governs the effectiveness of subsequent gas extraction. Since reservoirs are saturated with various pore fluids, it is essential to evaluate the alteration of fracability of varyingly saturated rocks. In this study, varyingly saturated (dry, water, and brine with 10%, 20% and 30% NaCl by weight) siltstone s les were subjected to uniaxial compressive loading to evaluate their fracability variation. Acoustic emission (AE) and ARAMIS photogrammetry analyses were incorporated to interpret the crack propagation. SEM analysis was carried out to visualize the micro-structural alterations. Results show that siltstone strength and brittleness index (BI) are reduced by 31.7% and 46.7% after water saturation, due to water-induced softening effect. High NaCl concentrations do not reduce the siltstone strength or brittleness significantly but may contribute to a slight re-gain of both values (about 3–4%). This may be due to NaCl crystallization in rock pore spaces, as confirmed by SEM analysis. AE analysis infers that dry siltstone exhibits a gradual fracture propagation, whereas water and brine saturated specimens exhibit a hindered fracturing ability. ARAMIS analysis illustrates that high NaCl concentrations causes rock mass failure to be converted to shear failure from splitting failure, which is in favour of fracability.
Experimental investigation of quenching effect on mechanical, microstructural and flow characteristics of reservoir rocks: Thermal stimulation method for geothermal energy extraction
Publisher: Elsevier BV
Date: 03-2018
An experimental study of single and two-phase fluid flow through fractured granite specimens
Publisher: Springer Science and Business Media LLC
Date: 12-03-2009
Characterization of two-phase flow in a single rock joint
Publisher: Elsevier BV
Date: 02-2006
Geochemical aspects of CO<inf>2</inf> sequestration in deep saline aquifers: A review
Publisher: Elsevier BV
Date: 09-2015
Experimental Study of Matrix Permeability of Gas Shale: An Application to CO2-Based Shale Fracturing
Publisher: MDPI AG
Date: 21-03-2018
DOI: 10.3390/EN11040702
Abstract: Because the limitations of water-based fracturing fluids restrict their fracturing efficiency and scope of application, liquid CO2 is regarded as a promising substitute, owing to its unique characteristics, including its greater environmental friendliness, shorter clean-up time, greater adsorption capacity than CH4 and less formation damage. Conversely, the disadvantage of high leak-off rate of CO2 fracturing due to its very low viscosity determines its applicability in gas shales with ultra-low permeability, accurate measurement of shale permeability to CO2 is therefore crucial to evaluate the appropriate injection rate and total consumption of CO2. The main purpose of this study is to accurately measure shale permeability to CO2 flow during hydraulic fracturing, and to compare the leak-off of CO2 and water fracturing. A series of permeability tests was conducted on cylindrical shale s les 38 mm in diameter and 19 mm long using water, CO2 in different phases and N2 considering multiple influencing factors. According to the experimental results, the apparent permeability of shale matrix to gaseous CO2 or N2 is greatly over-estimated compared with intrinsic permeability or that of liquid CO2 due to the Klinkenberg effect. This phenomenon explains that the permeability values measured under steady-state conditions are much higher than those under transient conditions. Supercritical CO2 with higher molecular kinetic energy has slightly higher permeability than liquid CO2. The leak-off rate of CO2 is an order of magnitude higher than that of water under the same injection conditions due to its lower viscosity. The significant decrease of shale permeability to gas after water flooding is due to the water block effect, and much longer clean-up time and deep water imbibition depth greatly impede the gas transport from the shale matrix to the created fractures. Therefore, it is necessary to substitute water-based fracturing fluids with liquid or super-critical CO2 in clay-abundant shale formations.
Field experiments on fracture evolution and correlations between connectivity and abutment pressure under top coal caving conditions
Publisher: Elsevier BV
Date: 11-2018
The mechanical behaviour of coal with respect to CO2 sequestration in deep coal seams
Publisher: Elsevier BV
Date: 12-2007
Laboratory measurement of two-phase flow parameters in rock joints based on high pressure triaxial testing
Publisher: American Society of Civil Engineers (ASCE)
Date: 06-2001
Discrete fracture matrix modelling of fully-coupled CO2 flow – Deformation processes in fractured coal
Publisher: Elsevier BV
Date: 02-2021
An experimental study of two-phase flow behaviour through pipes and hydraulically- fractured rock specimens
Publisher: Elsevier BV
Date: 04-2018
The effect of CO2 saturation on mechanical properties of Australian black coal using acoustic emission
Publisher: Elsevier BV
Date: 08-2010
An experimental testing apparatus for study of suffusion of granular soils in geological structures
Publisher: Elsevier BV
Date: 08-2018
An experimental study on fracture evolution mechanism of a non-persistent jointed rock mass with various anchorage effects by DSCM, AE and X-ray CT observations
Publisher: Elsevier BV
Date: 10-2020
A Hybrid Approach to Rock Pre-conditioning Using Non-explosive Demolition Agents and Hydraulic Stimulation
Publisher: Springer Science and Business Media LLC
Date: 20-07-2023
DOI: 10.1007/S00603-023-03455-4
Abstract: This study presents a novel approach to rock pre-conditioning to promote the sustainability of low-grade ore mining applications such as in-situ recovery and cave mining. The proposed method involves a two-stage hybrid approach, utilizing soundless cracking demolition agents (SCDAs) to initiate radial fractures in a predrilled host rock, followed by hydraulic stimulation to extend the fractures. SCDA injection in the first stage creates multiple radial fractures around the injection well. However, the extent of fractures is limited to the near vicinity of the injection well. To overcome this limitation, the second stage involves the application of hydraulic stimulation to extend the initiated fractures, which produces a greater fracture density compared to pure hydraulic stimulation. The concept was assessed using a fully coupled hydro-mechanical discrete element model that simulated the hybrid fracturing method on crystalline rock at the grain scale. The results indicate that the proposed method can create a high density of fractures around the injection well. Additionally, we identify and evaluate the key factors affecting the performance of the proposed method, including rock mass heterogeneity, stress anisotropy, and pre-existing defects, providing valuable insights for further experimental design and execution. Overall, the study offers promising results for a potential solution to enhance the efficiency of low-grade ore mining through the hybrid rock pre-conditioning method.
Effect of Salinity on Effective CO2 Permeability in Reservoir Rock Determined by Pressure Transient Methods: an Experimental Study on Hawkesbury Sandstone
Publisher: Springer Science and Business Media LLC
Date: 12-11-2015
Effects of Coal Deformation on Different-Phase CO2 Permeability in Sub-Bituminous Coal: An Experimental Investigation
Publisher: MDPI AG
Date: 26-10-2018
DOI: 10.3390/EN11112926
Abstract: Coal deformation is one of the leading problems for carbon dioxide (CO2) sequestration in coal seams especially with respect to different-phase CO2 injection. In this paper, a series of core flooding tests were conducted under different confining stresses (8–20 MPa), injection pressures (1–15 MPa), and downstream pressures (0.1–10 MPa) at 50 °C temperature to investigate the effects of coal deformation induced by adsorption and effective stress on sub-critical, super-critical, and mixed-phase CO2 permeability. Due to the linear relationship between the mean flow rate and the pressure gradient, Darcy Law was applied on different-phase CO2 flow. Experimental results indicate that: (1) Under the same effective stress, sub-critical CO2 permeability mixed-phase CO2 permeability super-critical CO2 permeability. (2) For sub-critical CO2 flow, the initial volumetric strain is mainly attributed to adsorption-induced swelling. A temporary drop in permeability was observed. (3) For super-critical CO2 flow, when the injection pressure is over 10 MPa, effective-stress-generated deformation is dominant over the adsorption-induced strain and mainly contributes to the volumetric strain change. Thus, there is a linear increase of the volumetric strain with mean pore pressure and super-critical CO2 permeability increased with volumetric strain. (4) For mixed-phase CO2 flow, coupling effects of adsorption-induced swelling and effective stress on the volumetric strain were observed but effective stress made more of a contribution. CO2 permeability consistently increased with the volumetric strain. This paper reveals the swelling mechanism of different-phase CO2 injections and its effect on coal permeability.
Deformation characteristics of bedded sandstone in uniaxial compression
Publisher: CRC Press
Date: 15-05-2013
DOI: 10.1201/B14917-22
Unconventional Gas: Experimental Study of the Influence of Subcritical Carbon Dioxide on the Mechanical Properties of Black Shale
Publisher: MDPI AG
Date: 07-07-2016
DOI: 10.3390/EN9070516
Single phase water flow through rock fractures
Publisher: Springer Science and Business Media LLC
Date: 2000
Deformation mechanics and acoustic propagation in reservoir rock under brine and oil saturation: An experimental study
Publisher: Elsevier BV
Date: 06-2016
Finite element analysis of width effect in interface debonding of FRP plate bonded to concrete
Publisher: Elsevier BV
Date: 2015
An element-free Galerkin method using vertically integrated multiphase flow model for carbon sequestration
Publisher: Elsevier BV
Date: 2019
A mesostructure-based damage model for thermal cracking analysis and application in granite at elevated temperatures
Publisher: Springer Science and Business Media LLC
Date: 24-12-2014
Experimental study of mechanical behavior and X-ray micro CT observations of sandstone under conventional triaxial compression
Publisher: ASTM International
Date: 07-01-2015
DOI: 10.1520/GTJ20140209
Mechanical Behaviour of Reservoir Rock Under Brine Saturation
Publisher: Springer Science and Business Media LLC
Date: 17-04-2012
A new triaxial apparatus to study the mechanical and fluid flow aspects of carbon dioxide sequestration in geological formations
Publisher: Elsevier BV
Date: 08-2011
Mechanical behaviour and permeability evolution of gas-containing coal from unloading confining pressure tests
Publisher: Elsevier BV
Date: 04-2017
Carbon Capture and Storage in Indian Coal Seams
Publisher: Carbon Management Technology Conference
Date: 2012
DOI: 10.7122/151614-MS
The potential of high heat generating granites as EGS source to generate power and reduce CO 2 emissions, western Arabian shield, Saudi Arabia
Publisher: Elsevier BV
Date: 12-2015
Fracture Processes of Rock-Like Specimens Containing Nonpersistent Fissures under Uniaxial Compression
Publisher: MDPI AG
Date: 28-12-2018
DOI: 10.3390/EN12010079
Abstract: Many rock engineering accidents have proven that the coalescence of discontinuities in surrounding rock can have a major impact on the security and stable operation of energy infrastructure. To give an insight into the understanding of the crack propagation and coalescence in fissured rock masses, a series of uniaxial compression experiments were conducted on rock-like specimens containing nonpersistent fissures. The digital speckle correlation method (DSCM) and the acoustic emission (AE) monitoring system were adopted to capture the real-time strain field on the specimens’ surfaces and microfracturing events within specimens, respectively. The experimental results indicated that the strength and deformation modulus of specimens were significantly affected by fissure inclination. The damage process showed obvious progressive stain localization failure characteristics. The clear and intuitive full-field strain field development was successfully monitored by the DSCM technique. The real-time strain accumulation, crack initiation, propagation, and coalescence were also analyzed. Each time, the saltation of the strain field was usually accompanied by the fluctuation of the stress curve and obvious AE events. Crack coalescence modes between fissures changed from tension coalescence mode to mixed tension-shear coalescence mode, then to shear coalescence mode with an increase in fissure inclination. Five basic failure modes were identified from the experimental results: Tensile failure across the fissure planes, rotation failure of newly generated blocks, mixed failure mode, shear failure, and splitting failure. An investigation of the fracture processes of rock-like specimens containing nonpersistent fissures using these methods can enhance understanding of the fracture behavior of jointed rocks.
An Approach to Calculating Casing Bearing Capacity with Parabolic Deformation Characteristics Under Local Radial Loading
Publisher: MDPI AG
Date: 07-04-2020
DOI: 10.3390/EN13071769
Abstract: In the process of waterflooding technology in the Jilin oilfield, local radial compressive stress caused by rock deformation results in local casing collapse. According to statistics regarding casing-deformation characteristics, a certain number of these characteristics are approximately parabola-shaped at the radial-deformation bottom, and the boundary of the whole deformation area is approximately symmetrical and double-parabola-shaped. The main work of this article focused on occurrences of such casing deformation. Assuming that, in the process of casing deformation, external work is totally converted into energy consumption due to the deformation, the variation regularity of bearing capacity under local radial load was obtained. In the Qing-1 stratum of the Jilin oilfield, by selecting casing with radial collapse deformation parameters of 41/2″J55, 51/2″J55, 41/2″N80, and 51/2″N80, radial bearing capacity was calculated. Study results showed that the casing bearing-capacity value was reduced by 39.69% compared with the current API 5C3 standard when under the action of a local radial load. The casing collapsed due to the impact of local radial loads produced by mudstone creep. A series of relationships between radial bearing strength and casing parameters were also obtained. The research results are of significant academic value for the compilation of casing design codes or standards under local radial loading.
Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2
Publisher: Springer International Publishing
Date: 24-08-2015
Coupling Effects of Supercritical CO2 Sequestration in Deep Coal Seam
Publisher: American Chemical Society (ACS)
Date: 03-12-2018
Numerical simulation and interpretation of the grain size effect on rock strength
Publisher: Springer Science and Business Media LLC
Date: 16-02-2018
Use of Digital Terrestrial Photogrammetry in rocky slope stability analysis by Distinct Elements Numerical Methods
Publisher: Elsevier BV
Date: 10-2011
A damage mechanical model applied to analysis of mechanical properties of jointed rock masses
Publisher: Elsevier BV
Date: 02-2019
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