实时微地震监测金坛盐穴储气库稳定性

doi:10.11885/j.issn.1674-5086.2017.05.24.01

西南石油大学学报(自然科学版) ›› 2018, Vol. 40 ›› Issue (5): 140-146.DOI: 10.11885/j.issn.1674-5086.2017.05.24.01

实时微地震监测金坛盐穴储气库稳定性

井岗¹, 李龙¹, 巴金红¹, 刘涛², 陈加松¹

1. 中国石油西气东输管道公司储气库项目部, 江苏镇江 212000;
2. 中国石油天然气销售西部公司, 新疆乌鲁木齐 830012

收稿日期:2017-05-24 出版日期:2018-10-01 发布日期:2018-10-01
通讯作者: 井岗,E-mail:xqdsjinggang@petrochina.com.cn
作者简介:井岗,1986年生,男,汉族,陕西渭南人,工程师,硕士,主要从事盐穴储气库地质研究及稳定性监测方面的工作。E-mail:xqdsjinggang@petrochina.com.cn;李龙,1966年生,男,汉族,陕西泾阳人,高级工程师,主要从事盐穴储气库造腔设计和现场工程管理及储气库生产运行、安全管理等工作。E-mail:cnlilong@petrochina.com.cn;巴金红,1982年生,男,汉族,湖北武汉人,工程师,硕士,主要从事盐穴储气库建库及动态监测方面的工作。E-mail:bajinhong@petrochina.com.cn;刘涛,1984年生,男,汉族,陕西渭南人,工程师,硕士,主要从事规划计划管理工作。E-mail:liutao131@petrochina.com.cn;陈加松,1986年生,男,汉族,江苏淮安人,硕士,主要从事盐穴储气库地质力学分析和评价研究工作。E-mail:chenjiasong@petrochina.com.cn
基金资助:
中国石油储气库重大专项（2015E-4008）

Real-time Microseism Monitoring of Stability of Salt-cavern Gas Storage in Jintan

JING Gang¹, LI Long¹, BA Jinhong¹, LIU Tao², CHEN Jiasong¹

1. Gas Storage Project Department of PetroChina West-East Gas Pipeline Company, Zhenjiang, Jiangsu 212000, China;
2. PetroChina West Gas Marketing Company, Urumqi, Xinjiang 830012, China

Received:2017-05-24 Online:2018-10-01 Published:2018-10-01

摘要/Abstract

摘要： 地下腔体的稳定性是盐穴储气库安全平稳运行的重中之重。为了实时监测盐穴储气库注水排卤和注采气过程中腔体状态进而评价注采运行参数的合理性，利用微地震技术连续监测23 d，通过井中方式布置12级检波器，采用地面震源进行检波器空间定向，联合P波S波信息进行微地震事件空间定位。通过微地震事件数量和注采参数的交汇分析研究生产工艺对腔体稳定性的影响。研究成果表明，为期23 d的监测过程中共发生419个有效信号；在2口造腔井各监测到16个微地震信号，在注采井中并未监测到明显信号；在两口注采井之间监测到大量微地震信号，结合三维地震数据及b值分析认为是天然裂缝活动；分析监测到微地震震源属于剪应力和张应力共同作用，其中张应力占主要作用的震源较多。研究认为，当前的注采运行参数满足盐穴储气库的安全运行要求；建议后续的研究过程中延长监测时间以加强微地震数量和注采参数的统计规律，加强气腔之间的天然裂缝活动研究以保证储气库的安全运行。

关键词: 微地震, 盐穴储气库, 稳定性, 注水排卤, 注采气, 天然裂缝

Abstract: To undertake the real-time monitoring of the cavity state in the process of water injection and brine displacement, gas injection and production of a salt-cavern gas storage, microseism technology is applied during continuous monitoring for 23 d. The 12-level detector is arranged using the in-well method, and the surface energy source is used for the spatial orientation of the detector. Moreover, the information of the P wave and S wave is combined for spatial orientation of the microseism events. Through a cross analysis on the number of microseism events and injection-production parameters, the influences of production technology on cavity stability are studied. The results show that 419 effective signals occurred during the 23 d monitoring process; sixteen microseism signals are detected in two cavity construction wells, without any obvious signal detected in injection and production wells. Many microseism signals are detected between two injection and production wells, which is considered as natural fracture activity through three-dimensional seismic data obtained with a b-value analysis. The microseism sources are detected as the joint action of shear stress and tensile stress after analytic monitoring, and the sources where tensile stress plays a leading role are more. It is believed that the current injection-production operation parameters meet the safe operation requirements of a salt-cavern gas storage; it is suggested to extend the monitoring time to enhance the microseism quantity and establish statistical laws for injection-production parameters in the follow-up studies, to strengthen the study on natural fracture activity among cavities, thereby ensuring the safe operation of a gas storage.

Key words: microseism, salt-cavern gas storage, stability, water injection and brine displacement, gas injection and production, natural fracture

中图分类号:

TE822

井岗, 李龙, 巴金红, 刘涛, 陈加松. 实时微地震监测金坛盐穴储气库稳定性[J]. 西南石油大学学报(自然科学版), 2018, 40(5): 140-146.

JING Gang, LI Long, BA Jinhong, LIU Tao, CHEN Jiasong. Real-time Microseism Monitoring of Stability of Salt-cavern Gas Storage in Jintan[J]. 西南石油大学学报(自然科学版), 2018, 40(5): 140-146.

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实时微地震监测金坛盐穴储气库稳定性

Real-time Microseism Monitoring of Stability of Salt-cavern Gas Storage in Jintan

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