Design of a Thermally-Actuated Gas Lift Safety Valve
Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valve assemblies (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching the wellhead. This is a growing concern as offshore wells are drilled thousand...
Published in: | Volume 2: Structures, Safety and Reliability |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
ASME International
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/1721.1/78576 |
id |
ftmit:oai:dspace.mit.edu:1721.1/78576 |
---|---|
record_format |
openpolar |
spelling |
ftmit:oai:dspace.mit.edu:1721.1/78576 2023-06-11T04:07:28+02:00 Design of a Thermally-Actuated Gas Lift Safety Valve Gilbertson, Eric W. Hover, Franz S. Arellano, Jose Freeman, Bryan Massachusetts Institute of Technology. Department of Mechanical Engineering Gilbertson, Eric W. Hover, Franz S. 2011-06 application/pdf http://hdl.handle.net/1721.1/78576 en_US eng ASME International http://dx.doi.org/10.1115/OMAE2011-49927 Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering 978-0-7918-4434-2 http://hdl.handle.net/1721.1/78576 Gilbertson, Eric et al. “Design of a Thermally-Actuated Gas Lift Safety Valve.” Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, 2011. 675–684. orcid:0000-0002-2621-7633 Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ MIT web domain Article http://purl.org/eprint/type/ConferencePaper 2011 ftmit https://doi.org/10.1115/OMAE2011-49927 2023-05-29T08:20:04Z Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valve assemblies (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching the wellhead. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure conditions, and repair and monitoring become difficult. Currently no safeguard exists in the GLV to prevent product passage in the event of check valve failure. In this paper a design and operational procedures are proposed for a thermally-actuated positive-locking safety valve to seal the GLV in the event of check valve failure. A thermal model of the well and GLV system is developed and compared to well data to verify feasibility of a thermally-actuated safety valve. A 3× scale prototype safety valve is built and tested under simulated failure scenarios and well start-up scenarios. Realistic well temperatures in the range of 20C to 70C are used. Results demonstrate valve closure in response to simulated check valve failure and valve opening during simulated well start-up. Article in Journal/Newspaper Arctic DSpace@MIT (Massachusetts Institute of Technology) Volume 2: Structures, Safety and Reliability 675 684 |
institution |
Open Polar |
collection |
DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valve assemblies (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching the wellhead. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure conditions, and repair and monitoring become difficult. Currently no safeguard exists in the GLV to prevent product passage in the event of check valve failure. In this paper a design and operational procedures are proposed for a thermally-actuated positive-locking safety valve to seal the GLV in the event of check valve failure. A thermal model of the well and GLV system is developed and compared to well data to verify feasibility of a thermally-actuated safety valve. A 3× scale prototype safety valve is built and tested under simulated failure scenarios and well start-up scenarios. Realistic well temperatures in the range of 20C to 70C are used. Results demonstrate valve closure in response to simulated check valve failure and valve opening during simulated well start-up. |
author2 |
Massachusetts Institute of Technology. Department of Mechanical Engineering Gilbertson, Eric W. Hover, Franz S. |
format |
Article in Journal/Newspaper |
author |
Gilbertson, Eric W. Hover, Franz S. Arellano, Jose Freeman, Bryan |
spellingShingle |
Gilbertson, Eric W. Hover, Franz S. Arellano, Jose Freeman, Bryan Design of a Thermally-Actuated Gas Lift Safety Valve |
author_facet |
Gilbertson, Eric W. Hover, Franz S. Arellano, Jose Freeman, Bryan |
author_sort |
Gilbertson, Eric W. |
title |
Design of a Thermally-Actuated Gas Lift Safety Valve |
title_short |
Design of a Thermally-Actuated Gas Lift Safety Valve |
title_full |
Design of a Thermally-Actuated Gas Lift Safety Valve |
title_fullStr |
Design of a Thermally-Actuated Gas Lift Safety Valve |
title_full_unstemmed |
Design of a Thermally-Actuated Gas Lift Safety Valve |
title_sort |
design of a thermally-actuated gas lift safety valve |
publisher |
ASME International |
publishDate |
2011 |
url |
http://hdl.handle.net/1721.1/78576 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
MIT web domain |
op_relation |
http://dx.doi.org/10.1115/OMAE2011-49927 Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering 978-0-7918-4434-2 http://hdl.handle.net/1721.1/78576 Gilbertson, Eric et al. “Design of a Thermally-Actuated Gas Lift Safety Valve.” Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering, 2011. 675–684. orcid:0000-0002-2621-7633 |
op_rights |
Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ |
op_doi |
https://doi.org/10.1115/OMAE2011-49927 |
container_title |
Volume 2: Structures, Safety and Reliability |
container_start_page |
675 |
op_container_end_page |
684 |
_version_ |
1768380625364975616 |