Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test
During the well completion test of deepwater high temperature and high pressure (HTHP) gas well, the force on the packer changes dramatically, leading to the packer failure and serious consequences. Take consideration of the temperature-pressure effect, the packer force calculation model and the fai...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-08-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X21001842 |
| _version_ | 1819104151956619264 |
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| author | Cheng Li Zhichuan Guan Bo Zhang Qing Wang Hongqiao Xie Yan Yan Chao Han |
| author_facet | Cheng Li Zhichuan Guan Bo Zhang Qing Wang Hongqiao Xie Yan Yan Chao Han |
| author_sort | Cheng Li |
| collection | DOAJ |
| description | During the well completion test of deepwater high temperature and high pressure (HTHP) gas well, the force on the packer changes dramatically, leading to the packer failure and serious consequences. Take consideration of the temperature-pressure effect, the packer force calculation model and the failure judgement flow diagram of packer are established based on the theory of tubing mechanics, the law of momentum conservation, and the liquid PVT properties to evaluate the reliability of packer. Dimensionless formulations to obtain the axial force and the pressure difference are proposed, and ten influencing and controllable factors are chosen to the sensitivity analysis. The results show that seven factors have great influence on the axial force and the pressure difference. Finally, two mitigation methods, installing slip joint on the tubing string and injecting nitrogen gas in the annulus, are studied for axial force and pressure difference, and the concept and calculation method of axial force safety factor are put forward. The mitigation effect of these two methods are all obvious. This study can provide theoretical guidance for packer protection during well completion test of deepwater HTHP gas well, thus can contribute to the development of natural gas and even the mitigation of greenhouse effect. |
| first_indexed | 2024-12-22T02:01:48Z |
| format | Article |
| id | doaj.art-178bc9bd34be4c73999d1e3e02114922 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-22T02:01:48Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-178bc9bd34be4c73999d1e3e021149222022-12-21T18:42:37ZengElsevierCase Studies in Thermal Engineering2214-157X2021-08-0126101021Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion testCheng Li0Zhichuan Guan1Bo Zhang2Qing Wang3Hongqiao Xie4Yan Yan5Chao Han6School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China; Shandong Ultra-deep Drilling Process Control Tech R&D Center, Qingdao, 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China; Shandong Ultra-deep Drilling Process Control Tech R&D Center, Qingdao, 266580, China; Corresponding author. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China.,Research Institute of Safety and Environment Protection Technology, CNPC, Beijing 102206, ChinaCNPC Engineering Technology R&D Company Limited, Beijing 102206, ChinaSinopec Research Institute of Petroleum Engineering, Beijing, 100101, China; State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing, 100101, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China; Shandong Ultra-deep Drilling Process Control Tech R&D Center, Qingdao, 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao, 266580, China; Shandong Ultra-deep Drilling Process Control Tech R&D Center, Qingdao, 266580, ChinaDuring the well completion test of deepwater high temperature and high pressure (HTHP) gas well, the force on the packer changes dramatically, leading to the packer failure and serious consequences. Take consideration of the temperature-pressure effect, the packer force calculation model and the failure judgement flow diagram of packer are established based on the theory of tubing mechanics, the law of momentum conservation, and the liquid PVT properties to evaluate the reliability of packer. Dimensionless formulations to obtain the axial force and the pressure difference are proposed, and ten influencing and controllable factors are chosen to the sensitivity analysis. The results show that seven factors have great influence on the axial force and the pressure difference. Finally, two mitigation methods, installing slip joint on the tubing string and injecting nitrogen gas in the annulus, are studied for axial force and pressure difference, and the concept and calculation method of axial force safety factor are put forward. The mitigation effect of these two methods are all obvious. This study can provide theoretical guidance for packer protection during well completion test of deepwater HTHP gas well, thus can contribute to the development of natural gas and even the mitigation of greenhouse effect.http://www.sciencedirect.com/science/article/pii/S2214157X21001842Well completion testDeepwater HTHP wellPackerReliability evaluationDimensionless studyNitrogen gas injection |
| spellingShingle | Cheng Li Zhichuan Guan Bo Zhang Qing Wang Hongqiao Xie Yan Yan Chao Han Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test Case Studies in Thermal Engineering Well completion test Deepwater HTHP well Packer Reliability evaluation Dimensionless study Nitrogen gas injection |
| title | Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test |
| title_full | Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test |
| title_fullStr | Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test |
| title_full_unstemmed | Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test |
| title_short | Failure and mitigation study of packer in the deepwater HTHP gas well considering the temperature-pressure effect during well completion test |
| title_sort | failure and mitigation study of packer in the deepwater hthp gas well considering the temperature pressure effect during well completion test |
| topic | Well completion test Deepwater HTHP well Packer Reliability evaluation Dimensionless study Nitrogen gas injection |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X21001842 |
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