关键词: 天然气, 储气库, 盐穴, 造腔, 参数优化

Abstract:

For its special advantages, the salt cavern gas storage is attracting more and more attention in the worldwide oil and gas industry. It is a complex and systematic project to build a certain shape salt cavern by means of leaching. Based on the characteristics of the salt cavern gas storage built in the bedded salt formation in China, this paper fully discussed the application of salt dissolution on  the design of  gas storage  cavern. Through analysis of the forming mechanism of gas storage cavern, the following techniques were put forward from the view of salt dissolution, shape control and detection as follows, the corresponding well type to salt cavern, the circulation measure, steps of solution mining, adjusting of leaching pipeline, the shape control techniques, roof protection, sealing detection, and cavern stability,etc. And the pipe string assembly for leaching, the method to determine the circulation rate, and the measure to keep cavern stability, are also recommended. This paper is of guiding significance to the design and construction of salt cavern gas storage.

Key words: natural gas, gas storage, salt cavern, solution mining, parameter optimization