Study on Improving the Solution-mining Processes of Salt-cavern Gas Storage and Field Applications of the Improved Process Technology

doi:10.11885/j.issn.1674-5086.2017.09.06.04

Abstract

Abstract: While the salt-cavern gas storage solution is becoming increasingly popular in the natural gas industry, engineering practice shows significant improvement opportunities for many solution-mining processes of the Jintan gas storage, the first commissioned salt-cavern gas storage in China. The solution-mining processes of the gas storage were analyzed to identify opportunities to improve solution-mining efficiency, minimize solution-mining energy consumption, and maximize the utilization of salt layers. The improvement opportunities identified are:employing reverse-circulation solution mining to increase greatly the salinity of the discharged brine; minimizing the number of underground operations and eliminating unnecessary interruptions to mining operations, thereby reducing solution-mining cycle time; installing a fiber-optic interface meter to enable real-time monitoring of the solution-inhibitor interface; optimizing the quantity of water injected to reduce energy consumption; and treating thick intercalated beds and expanding the overall cavern capacity to maximize the utilization of salt layers.

Key words: reverse-circulation solution mining, fiber-optic interface meter, water injection quantity optimization, thick intercalated bed treatment, cavity expansion

CLC Number:

TE822

WANG Yuangang, ZHOU Donglin, DENG Lin, FU Yaping, GUAN Di. Study on Improving the Solution-mining Processes of Salt-cavern Gas Storage and Field Applications of the Improved Process Technology[J]. 西南石油大学学报(自然科学版), 2018, 40(5): 147-153.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2017.09.06.04

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2018/V40/I5/147

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