ORCID Profile
0000-0003-1704-802X
Current Organisation
Indian Institute of Technology (Indian School of Mines)
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Publisher: American Chemical Society (ACS)
Date: 06-05-2022
Publisher: Society of Petroleum Engineers (SPE)
Date: 22-11-2022
DOI: 10.2118/212848-PA
Abstract: Sucker rod pump (SRP) is the most popular form of artificial lift, used in one of the western assets of Oil and Natural Gas Corporation (ONGC). It has been used to produce both vertical and deviated wells. In one of the mature fields, frequent tubing and sucker rod failures have been witnessed in both vertical and deviated SRP wells with mean time between failures (MTBF) as low as 4–5 months, which resulted in frequent workover and associated workover cost and production loss. Rubbing between tubing and sucker rod in deviated wells and bending of rods and tubing in vertical and deviated wells below the rod and tubing neutral point in wells experiencing higher compressive load, as a result of loads caused by the frictional and viscous forces inside the tubing string, such as the mechanical pump friction, the friction between the rods and fluid, the fluid and tubing, the tubing and rods, and the friction due to the fluid flowing through valves, has resulted in wearing of downhole equipment and holes in tubings. The paper analyzes the cause of failures and presents a comprehensive method to mitigate/minimize sucker rod and tubing failure. The study presented in this paper finds its application in a few candidate wells of ONGC, for the first time, where increased MTBF was achieved by the successful adoption of the said method. In addition, the present study has brought uniqueness by integrating the existing knowledge to bring out a rigorous workflow for maximizing the life of SRPs leading to considerable value addition to sucker rod operations of the candidate wells of ONGC. The suggested approach was useful in formulating a novel strategy to minimize the rod and tubing failure by application of a proposed workflow that includes (1) defining a computational method to estimate lateral loads acting along the rod string in deviated wells and to estimate tubing and sucker rod neutral point, (2) quantification of the number of guides to be placed below the neutral point and at points where the lateral load is high, and (3) estimation of the depth of the tubing anchor or length of the tail pipe to eliminate/minimize tubing buckling. The proposed method finds its validation in the field application, which is elaborately discussed in this paper.
Publisher: Elsevier BV
Date: 2021
Publisher: Springer Science and Business Media LLC
Date: 21-01-2017
Publisher: Springer Science and Business Media LLC
Date: 04-08-2023
Publisher: Springer Science and Business Media LLC
Date: 15-02-2023
Publisher: Walter de Gruyter GmbH
Date: 30-01-2018
Abstract: The aims of this study are three-fold: determine the factors that motivate nurses to pursue mental health nursing identify the strategies that might attract nursing students and practising nurses to pursue mental health nursing as a professional career and identify the difficulties of nurses in achieving their preferred clinical specialty. A descriptive qualitative study design with semi-structured interviews was used. Fifteen mental health nurses from rural and regional South Australia were interviewed. Interviews were transcribed verbatim, and thematic analysis was undertaken. Of the fifteen participants, thirteen were females and two were males their average age was 50 years. The factors that motivated the participants to pursue mental health nursing were categorized as intrinsic and extrinsic. There were many strategies that might attract nursing students and nurses to the field, but the most popular suggestion was the provision of high quality meaningful clinical placements. Other strategies were to convey the personal satisfaction derived from being a mental health nurse, promote mental health nursing aggressively, and provide employment incentives. The study also highlighted the importance of addressing stigma, and greater education and support for nurses to pursue a mental health career.
Publisher: Elsevier BV
Date: 04-2023
Publisher: Springer Science and Business Media LLC
Date: 31-07-2017
Publisher: Elsevier BV
Date: 08-2021
Location: India
No related grants have been discovered for Rajeev Upadhyay.