Determination of the maximum allowable gas pressure for an underground gas storage salt cavern e A case study of Jintan, China

	Determination of the maximum allowable gas pressure for an underground gas storage salt cavern e A case study of Jintan, China
	Wang Tongtao 2; Li Jianjun 3; Jing Gang 3; Zhang Qingqing 3; Yang Chunhe 2; Daemen J J K 1
刊名	Journal of Rock Mechanics and Geotechnical Engineering
	2019
卷号	11 期号:2 页码:251
关键词	Underground gas storage (UGS) salt cavern In situ stress testing Maximum gas pressure Gas penetration failure Microseismic monitoring
ISSN号	1674-7755
英文摘要	Increasing the allowable gas pressure of underground gas storage (UGS) is one of the most effective methods to increase its working gas capacity. In this context, hydraulic fracturing tests are implemented on the target formation for the UGS construction of Jintan salt caverns, China, in order to obtain the minimum principal in situ stress and the fracture breakdown pressure. Based on the test results, the maximum allowable gas pressure of the Jintan UGS salt cavern is calibrated. To determine the maximum allowable gas pressure, KING-1 and KING-2 caverns are used as examples. A three-dimensional (3D) geomechanical model is established based on the sonar data of the two caverns with respect to the features of the target formation. New criteria for evaluating gas penetration failure and gas seepage are proposed. Results show that the maximum allowable gas pressure of the Jintan UGS salt cavern can be increased from 17 MPa to 18 MPa (i.e. a gradient of about 18 kPa/m at the casing shoe depth). Based on numerical results, a field test with increasing maximum gas pressure to 18 MPa has been carried out in KING-1 cavern. Microseismic monitoring has been conducted during the test to evaluate the safety of the rock mass around the cavern. Field monitoring data show that KING-1 cavern is safe globally when the maximum gas pressure is increased from 17 MPa to 18 MPa. This shows that the geomechanical model and criteria proposed in this context for evaluating the maximum allowable gas pressure are reliable.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/26146]
专题	中科院武汉岩土力学所
作者单位	1.内华达大学雷诺分校 2.中国科学院武汉岩土力学研究所 3.Department of Gas Storage Project, West-East Gas Pipeline Company, PetroChina
推荐引用方式 GB/T 7714	Wang Tongtao,Li Jianjun,Jing Gang,et al. Determination of the maximum allowable gas pressure for an underground gas storage salt cavern e A case study of Jintan, China[J]. Journal of Rock Mechanics and Geotechnical Engineering,2019,11(2):251.
APA	Wang Tongtao,Li Jianjun,Jing Gang,Zhang Qingqing,Yang Chunhe,&Daemen J J K.(2019).Determination of the maximum allowable gas pressure for an underground gas storage salt cavern e A case study of Jintan, China.Journal of Rock Mechanics and Geotechnical Engineering,11(2),251.
MLA	Wang Tongtao,et al."Determination of the maximum allowable gas pressure for an underground gas storage salt cavern e A case study of Jintan, China".Journal of Rock Mechanics and Geotechnical Engineering 11.2(2019):251.