Passability test and simulation of sand control string with natural gas hydrates completion in large curvature hole

• Published in: China Geology Vol. 6; no. 1; pp. 27 - 36
• Main Authors: Shi, Hao-xian, Yu, Yan-jiang, Qin, Ru-lei, Deng, Jun-yu, Zhong, Yi-xin, Qi, Li-qiang, Li, Bin, Fan, Bo, Lu, Qiu-ping, Wang, Jian, Li, Kui-wei, Gan, Ye-cheng, Chen, Gen-long, Chen, Hao-wen, Wu, Zhi-ming
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2023
• Subjects: Completion sand control string; Friction coefficient; Large curvature borehole; Natural gas hydrates (NGHs); NGHs exploration trial engineering; Oil and gas exploration engineering; Passability test; Oil and gas exploration engineering; Friction coefficient; Natural gas hydrates (NGHs); Passability test; Large curvature borehole; NGHs exploration trial engineering; Completion sand control string
• ISSN: 2096-5192; 2589-9430; 2589-9430
• DOI: 10.31035/cg2022024

To meet the requirements of marine natural gas hydrate exploitation, it is necessary to improve the penetration of completion sand control string in the large curvature borehole. In this study, large curvature test wells were selected to carry out the running test of sand control string with pre-packed screen. Meanwhile, the running simulation was performed by using the Landmark software. The results show that the sand control packer and screen can be run smoothly in the wellbore with a dogleg angle of more than 20°/30 m and keep the structure stable. Additionally, the comprehensive friction coefficient is 0.4, under which and the simulation shows that the sand control string for hydrate exploitation can be run smoothly. These findings have important guiding significance for running the completion sand control string in natural gas hydrate exploitation. ©2023 China Geology Editorial Office.