盐穴储气库回溶造腔技术研究

doi:10.11885/j.issn.16745086.2015.02.24.02

西南石油大学学报(自然科学版) ›› 2016, Vol. 38 ›› Issue (5): 122-128.DOI: 10.11885/j.issn.16745086.2015.02.24.02

盐穴储气库回溶造腔技术研究

刘继芹¹, 焦雨佳¹, 李建君¹, 施锡林²

1. 中国石油东部管道有限公司储气库项目部, 江苏镇江 212000;
2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室, 湖北武汉 430071

收稿日期:2015-02-24 出版日期:2016-10-01 发布日期:2016-10-01
通讯作者: 刘继芹,E-mail:liujiqin@petrochina.com.cn
作者简介:刘继芹,1988年生,男,汉族,山东济宁人,助理工程师,硕士,主要从事盐穴储气库造腔工艺技术研究。E-mail:liujiqin@petrochina.com.cn;焦雨佳,1986年生,女,汉族,四川内江人,助理工程师,主要从事储气库方面的工作。E-mail:jiaoyujia@petrochina.com.cn;李建君,1982年生,男,汉族,江苏常州人,工程师,硕士,主要从事盐穴储气库建设工作。E-mail:cqklijianjun@petrochina.com.cn;施锡林,1983年生,男,汉族,山东泰安人,博士,主要从事石油天然气地下储备方面的研究工作。E-mail:xlshi@whrsm.ac.cn
基金资助:
中国石油科技重大专项（2015E40）；国家自然科学基金（51404241）。

Back-leaching Technology in The Construction of Underground Salt Cavern Gas Storage

LIU Jiqin¹, JIAO Yujia¹, LI Jianjun¹, SHI Xilin²

1. Gas Storage Project Department of Eastern Gas Pipeline Co. Ltd., PetroChina, Zhenjiang, Jiangsu 212000, China;
2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, CAS, Wuhan, Hubei 430071, China

Received:2015-02-24 Online:2016-10-01 Published:2016-10-01

摘要/Abstract

摘要： 为提高地下盐穴储气库的经济性，在确保运行安全前提下，开发企业要求盐穴储气库地下净体积尽可能大，而在造腔过程中由于地质情况、工程故障以及认识不到位等原因导致腔体部分盐层未得到充分溶蚀，体积没有达到最优，为充分利用日渐匮乏的适合建库盐层，有必要进行回溶造腔，提高单腔有效体积。利用注气排卤管柱，在注气排卤后，回注淡水，驱顶天然气使卤水界面至设计深度，对界面下盐层进行回溶扩腔。为此，建立了回溶造腔数学模型，并针对金坛储气库L井进行回溶造腔模拟研究。结果表明，L井回溶造腔一个轮次可有效提高腔体有效体积13.04%，效果显著。研究结果对提高盐层利用率和已有腔体有效体积等具有重要意义。

关键词: 盐穴储气库, 回溶造腔, 腔穴修补, 天然气阻溶, 数值模拟

Abstract: In order to improve the economic efficiency, the developer always requires to maximize the net volume of the underground gas storage facilities on the premise of operation safety. However,due to geological reasons,engineering failures and inadequate comprehemsion, some salt layers often fail to dissolve during the storage-building process. To make the best use of the increasingly deficient salt formations suitable for underground gas storage facilities, back-leaching can be used to optimize the volume of the gas storage facility. After gas-injection and debrining, fresh water is injected by tubing strings to push the interface of the brine and gas at the designed depth. By doing that the salt formations below the interface can be leached again, which will enlarge the volume of the leached caverns. We established the back-leaching mathematic models and wrote calculation program. The pilot back-leaching in well-L in Jintan project shows the effective volume of the cavern can be raised by 13.04 percent. This research is important for enhancing the efficiency of the use of salt formations and will improve the effective volume of the built caverns.

Key words: salt cavern gas storage, back-leaching, cavity repair, SMUG, numerical simulation

中图分类号:

TE822

刘继芹, 焦雨佳, 李建君, 施锡林. 盐穴储气库回溶造腔技术研究[J]. 西南石油大学学报(自然科学版), 2016, 38(5): 122-128.

LIU Jiqin, JIAO Yujia, LI Jianjun, SHI Xilin. Back-leaching Technology in The Construction of Underground Salt Cavern Gas Storage[J]. 西南石油大学学报(自然科学版), 2016, 38(5): 122-128.

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盐穴储气库回溶造腔技术研究

Back-leaching Technology in The Construction of Underground Salt Cavern Gas Storage

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