盐岩矿床水平储库单井后退式建造技术与多场耦合理论

doi:10.13722/j.cnki.jrme.2021.0623

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摘要相比于垂直储库而言，在层状盐岩矿床中建造水平储库，可以避开层理状夹层与界面，降低了储存油气泄露的危险。给出水平储库单井后退式对流溶解的技术背景和建造方法；提出单层星型、多层错位布置的层状盐岩矿床大型水平储库群建造方案；在建立的固–流–热–传质多场耦合作用理论基础上，对单井后退式对流溶解水平储库建造过程进行数值模拟。结果表明：水平储库单井后退式控制溶解建造技术是一种经济高效的盐岩储气库建造方法。在层状盐岩矿床中采用单井后退式控制溶解建造方法建造大型水平储库群，可极大提升我国能源储库建设的规模与储存能力。按照多层星型状错位布置，两层盐岩层中一组库群净容积可达到1.36×107 m3以上。为保证水平溶腔的稳定性和对盐岩层空间的最大利用，在储气库的设计阶段，应在保证溶腔可靠性和密闭性的前提下尽可能将管柱系统布置在水平盐岩层较低层位。研究结果可以对国内盐岩储气库工程建设提供技术参考，有效推进中国储气库建设进程。

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	梁卫国1
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	肖宁1
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	李宁1
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	赵阳升1
	2
	杨海军3
	DUSSEAULT Maurice4

关键词 ：岩石力学, 层状盐岩, 水平储库, 单井后退式建腔, 大型储库群, 对流溶解, 多场耦合理论

Abstract：Compared with vertical storages，building horizontal storages in bedded salt rock deposits can avoid connecting bedded interlayers and interfaces and reduce stored oil and gas leakage risks. In this paper, the technical background and construction technique of the single-well retreating horizontal leaching method are presented, and the horizontal storage group construction schemes of single-layer star type and multi-layer staggered arrangement are presented. Based on the established multi-field coupling theory of solid-fluid-heat-mass transfer，a numerical simulation of the construction process of the single-well retreating horizontal leaching method is performed. The results show that with the help of geo-steering technology in petroleum exploration and the single-well retreating horizontal leaching method，large-scale horizontal storage groups can be built in layered salt rock deposits，greatly improving China¢s energy storage capacity. According to the multi-layer star-shaped dislocation arrangement，the net volume of a group of storages in the two-layer salt rock layer can reach more than 1.36×107 m3. To ensure the stability of the horizontal cavern and the maximum utilization of the salt rock space，in the design stage of the gas storage，the pipe string system should be arranged in the lower layer of the horizontal salt rock layer as far as possible under the premise of ensuring the reliability and airtightness of the cavern. It is also important to control the excessive upward expansion of the cavern through oil or gas injection in the leaching process. The research results can provide a technical reference for constructing domestic salt rock gas storage projects and effectively promote the construction of China¢s gas storage.

Key words： rock mechanics')" href="#">

rock mechanics bedded salt rock horizontal storage retrusive construction method with single well larger scale storage cluster convection dissolution ')" href="#">multi-field coupling theory

引用本文:

梁卫国1，2，肖宁1，2，李宁1，2，赵阳升1，2，杨海军3，DUSSEAULT Maurice4. 盐岩矿床水平储库单井后退式建造技术与多场耦合理论[J]. 岩石力学与工程学报, 2021, 40(11): 2229-2237.
LIANG Weiguo1，2，XIAO Ning1，2，LI Ning1，2，ZHAO Yangsheng1，2，YANG Haijun3，DUSSEAULT Maurice4. Study on single-well retreating leaching technology and multi-field coupling theory of horizontal storages in salt deposits. , 2021, 40(11): 2229-2237.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0623 或 http://rockmech.whrsm.ac.cn/CN/Y2021/V40/I11/2229

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