ORCID Profile
0000-0002-9168-1969
Current Organisations
University of Manchester
,
Curtin University
,
Curtin University Perth WA
,
Jomo Kenyatta University of Agriculture and Technology
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Publisher: Springer Science and Business Media LLC
Date: 26-03-2019
Publisher: Elsevier BV
Date: 07-2020
Publisher: American Society of Mechanical Engineers
Date: 08-06-2014
Abstract: Research is currently being undertaken in Australia to develop new drilling technologies for deep mineral exploration. The Deep Exploration Technologies Cooperative Research Centre (DET CRC) has carried out a comprehensive review of the available drilling technologies in the market. Following the study, coiled tube drilling technology has been suggested as a faster and cheaper method than conventional pipe drilling. This is primarily due to its smaller footprint relative to the standard rotary method, ease of unit mobility, less operating personnel, faster rate of penetration, and faster rig up and rig down times. The steel coiled tubing technology has traditionally been used in the petroleum industry. While there have been several attempts to evaluate the performance of coiled tubes in the oil and gas industry, limited or no attempts have been made to assess its performance in deep hard rock mineral exploration drilling. Therefore, DET CRC is in the process of re-designing the coiled tube rig approach to enable fast and efficient drilling of deep micro-holes in hard rocks. Cyclic bending of the coiled tubing past the yield strength point of the material leads to progressive weakening of the tube, which accordingly leads to rapid reduction of the tube service life [1]. Hence fatigue is an important parameter that needs to be considered in material selection for coiled tube and rig design. A bending machine was designed and manufactured to evaluate the fatigue bending strength of conventional HSLA steel tubes. The machine is capable of measuring and recording the bending/flattening resistant forces of the tubes along with the number of bend/flatten events. It can also measure the strain applied on the tube if needed. In this study, several HSLA steel grades and thicknesses of coiled tubes were tested for fatigue bending strength. Fatigued and non-fatigued tubes had their mechanical property alteration tested using tensile test methods. This paper presents the fatigue bending machine. The machine is designed to test most material types of coiled tubes. The paper also reports results of the cyclic bending experiments that were performed on selected grades and sizes of conventional HSLA steel coiled tubes. The paper complements and enhances the understanding of the performance of conventional coiled tube material under fatigue bending conditions.
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 2021
Publisher: SPE
Date: 27-03-2018
DOI: 10.2118/189918-MS
Abstract: In November 2016 the Deep Exploration Technologies Cooperative Research Centre (DET CRC) launched the RoXplorer®, a coiled tubing (CT) drilling rig for greenfields mineral exploration, delivering a platform for low-cost, rapid, safe and environmentally-friendly drilling. The launch represented an important technical milestone in the development of CT drilling for mineral exploration and has been complemented by a series of very successful field trials in the first half of 2017 The paper presents CT technology and its application for mineral exploration drilling. The three key challenges for CT drilling in mineral exploration are coil durability, drilling hard rocks with low weight-on-bit and s le fidelity. Results for mineral exploration CT-drilling field-trials in the consolidated cover rocks of South Australia and the unconsolidated cover rocks of the Murray Basin in Victoria are presented and outline how each of these challenges was overcome. The outcomes confirm the promise of this cheaper regional prospecting approach to mineral exploration drilling. The results of assay s les of the CT drilling cuttings are remarkable the assay s les from the CT drilling at Port Augusta trial matched those of diamond drill core from an adjacent hole.
Publisher: American Chemical Society (ACS)
Date: 13-04-2023
Publisher: Elsevier BV
Date: 03-2019
DOI: 10.1016/J.WASMAN.2017.12.024
Abstract: This paper describes the development of a new s ling and measurement method to infer methane flux using proxy measurements of CO
Location: United Kingdom of Great Britain and Northern Ireland
Location: Kenya
No related grants have been discovered for Christopher Lagat.