摘要
断层和天然裂缝的发育对页岩气储层水力压裂改造效果影响很大。为了查清其影响,首先利用三维叠后地震资料曲率和相干属性识别天然裂缝,其次利用微地震监测定位结果和水力压裂施工数据,分析天然裂缝的活动性及其对压裂改造效果的影响。结果表明,活动性天然裂缝对水力压裂裂缝的几何形态和压裂施工造成不同程度的影响,而非活动性天然裂缝对水力压裂裂缝的展布形态以及施工并无明显影响。研究结果可以为后期水平井轨迹的优化和水力压裂施工参数的调整提供参考依据。
Practices have shown that comprehensive research techniques for seismic and microseismic monitoring results are very beneficial for the development of unconventional oil and gas reservoirs.Based on the research of 3 Dseismic fracture properties,combined with microseismic monitoring mapping results and hydraulic fracturing construction data,we analyze in this paper the activities of natural fractures and its impacts during fracturing operation.The results have shown that active natural cracks will affect the geometry of hydraulic fracturing cracks and hydraulic fracturing construction,while non-active natural crack zones have no obvious influence on the distribution and construction of hydraulic fracturing cracks.These results can provide a reference for the optimization of horizontal well trajectory and the adjustment of hydraulic fracturing construction parameters.
作者
林鹤
李德旗
周博宇
金其虎
郭锐
刘俊辰
LIN He;LI Deqi;LI Deqi;JIN Qihu;GUO Rui;LIU Junchen(New Resources Geophysical Exploration Division,BGP Inc.,CNPC,Zhuozhou,Hebei 072750,China;Zhejiang Oilfield Company,PetroChina,Hangzhou,Zhejiang 310000,China;Southwest Oil and Gas field Company,PetroChina,Chengdu,Sichuan 610000,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2018年第A02期156-161,167,13,共8页
Oil Geophysical Prospecting
基金
国家科技重大专项"油藏及非常规气藏地球物理配套技术"(2017ZX05018-004)资助
关键词
微地震监测
微地震事件
天然裂缝
水力压裂
曲率属性
microseismic monitoring
microseismic events
natural cracks
hydraulic fracturing
curvature attribute
