摘要
地下储气库(以下简称储气库)设计注采运行30~50年,安全问题是储气库注采运行的重中之重。为保障储气库长期安全平稳运行,除常规监测手段外,微地震实时监测技术是储气库断层、盖层、储层及井筒监测的有效手段。新疆H储气库是国内最大陆相储气库,断裂较多,砂体变化较快,针对不同观测系统,采用微地震实时监测系统可论证监测范围、最小震级、定位精度等,在此基础上优选最优的微地震监测系统设计方案。研究过程中监测井采用"6口浅井、3口半深井"的组合井监测方式,监测能级为-0.6^-0.5级,定位精度为30 m,地面监测系统利用太阳能供电,数据采集系统通过无线传输方式,并应用微地震数据体处理解释和观测系统,实现对储气库高强度注采运行过程中动态密封性的实时监测与分析。经过5年的现场监测实践证明,该监测系统现场应用方便,灵敏度高,监测反馈速度快,能够精确地识别生产活动引起的微地震事件,有效指导了储气库注采运行过程中参数优化调整,保障了安全平稳高效运行。
Underground gas storage(hereinafter referred to as gas storage)is designed for injection and production operation for 30-50 years,and safety issues are the top priority of injection and production operation of gas storage.In order to ensure long-term safe and stable operation of gas storage,in addition to conventional monitoring methods,microseismic real-time monitoring technology is an effective method for monitoring faults,caps,reservoirs and wellbores of gas storage.Xinjiang H gas storage is the most continental facies in China.It has many faults and rapid changes in sand bodies.For its relatively complex geological conditions,the design of a microseismic monitoring system is closely integrated with the geological characteristics of the gas storage.Observation system,system evaluation,monitoring range,minimum magnitude,positioning accuracy,etc.,the optimal microseismic monitoring system design scheme is preferred.The monitoring well adopts a combined well monitoring method of"6 shallow wells and 3 semi-deep wells".The monitoring energy level is from-0.6 to-0.5 level and the positioning accuracy is 30 m.The ground monitoring system uses solar power.The data acquisition system is wirelessly transmitted and applied Microseismic data volume processing interpretation and observation system,real-time monitoring and analysis of dynamic tightness of gas storage during high-intensity injection-production operation.After five years of on-site monitoring practice,the monitoring system has been proved to be convenient in field application,high sensitivity,fast monitoring feedback,accurate identification of microseismic events caused by production activities,and effective guidance of parameter optimization and adjustment during injection and production operations of gas storage to ensure safe,stable and efficient operation.
作者
廖伟
刘国良
戴勇
张士杰
胥洪成
孙德强
郑强
赵楠
李超
LIAO Wei;LIU Guo-liang;DAI Yong;ZHANG Shi-jie;XU Hong-cheng;SUN De-qiang;ZHENG Qiang;ZHAO Nan;LI Chao(Hutubi Gus Storage Operation Area of Pero China Xinjiang Oilfield Company,Karamay 834000.China;Development Department of Petro China Xinjiang Oilfield Company,Karamay 834000,China;Research Insitute of Petroleum Exploration aund Development,Beijing 100083,China;Key I.aborutory 0f Underground Oil and Gus Storage Engineering 0f China National Petroleum Corporation,Beijing 100083,China;Institues of Science and Development,Chinese Academy of Sciences,Beijing 100190,China)
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2020年第11期1654-1662,共9页
Natural Gas Geoscience
基金
中国工程院咨询项目(编号:2016-ZD-07-05-03)
国家自然科学基金重点项目(编号:71133005)联合资助。
关键词
储气库
气藏型
微地震
监测系统
定位精度
参数优化
Gas storage
Gas reservoir type
Microseismic
Monitoring system
Positioning accuracy
Parameter optimization
