煤层气井压裂裂缝井下微地震监测技术应用分析  

Aanalysis the Result of the Downhole Microseismic Monitoring Technique in Coalbed Methane Well Fracturing

作　　者：张平[1] 吴建光[1] 孙唅森 张晓朋[1] 高海滨[1] 吴翔[1] 左景栾[1] 

机构地区：[1]中联煤层气有限责任公司,北京100011

出　　处：《科学技术与工程》2013年第23期6681-6685,6691,共6页Science Technology and Engineering

基　　金：国家科技重大专项(2011ZX05060)资助

摘　　要：分析了井下微地震裂缝监测测试技术原理、震源定位计算方法及现场测试方法。介绍了沁水盆地南部柿庄南区块煤层气井井下微地震裂缝监测测试解释结果。通过对监测解释结果分析,认识到柿庄南区块煤层压裂裂缝形态复杂,空间展布显现出网络裂缝及非对称裂缝的特征,裂缝延伸方位为北东向或东南向,与断层走向平行或垂直,各种压裂工艺形成的裂缝形态及几何尺寸差异较大;结果对压裂工艺选择、施工参数优化设计及井网部署提供了重要的依据。Analyzed the principles of the downhole microseismic fracture monitoring technical,the location calculation method of the microsesmic source and the field testing method,described the explanation results of the downhole microseismic fracture monitoring test in the south of Shi Zhuang block coalbed methane formation in southern Qinshui basin.Through the monitoring results analysis,coalbed methane seam fracture is very complex in the south of Shi Zhuang block,fracture spatial shape appear out network pattern and the non-symmetric features,fracture extends azimuth is Northeast or Southeast,parallel to or perpendicular to the fault.With the applied different fracturing technology,the fracture shape and the geometry size is differences.It provides the important reason on fracturing technology selected,fracturing parameter optimized and the well pattern designed.

关 键 词：煤层气 压裂 微地震 裂缝监测 

分 类 号：P631.4[天文地球—地质矿产勘探]