天然气地球科学 ›› 2020, Vol. 31 ›› Issue (11): 16541662.doi: 10.11764/j.issn.1672-1926.2020.08.006
廖伟1(),刘国良1,戴勇2,张士杰1,胥洪成3,4,孙德强5(),郑强1,赵楠1,李超5
Wei LIAO1(),Guo-liang LIU1,Yong DAI2,Shi-jie ZHANG1,Hong-cheng XU3,4,De-qiang SUN5(),Qiang ZHENG1,Nan ZHAO1,Chao LI5
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。
中图分类号:
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