黄202井区微地震深井监测适应性研究及应用

Research and Application of Down Hole Microseismic Monitoring Adaptability in Huang 202 Well Area

摘要: 微地震监测是压裂裂缝成像的关键技术，近年来随着石油行业对于非常规油气资源的重视以及为了低渗透油气藏增产而进行压裂施工的有关需求的增长，微地震监测已经成为地球物理界一种重要的技术。随着页岩气勘探开发的不断深入，储层埋深由早期约3000 m的垂深逐渐增加4000 m以下，对微地震监测效果产生了一定的影响，如何优化监测方案，提升监测效果，促进页岩气资源的有效开发，是目前微地震监测面临的首要难题，而不同监测方式的适应性成为关键因素。本文以四川盆地黄202井区为例，利用微地震深井监测数据，开展与3500 m以浅微地震深井监测成果对比分析，为该地区下步4000 m以深页岩气压裂监测方案选择提供指导，对提升监测效果、支撑改善储层压裂增产作业效果具有重要的价值和实践意义。

Abstract: Microseismic monitoring is a key technology for fracture imaging. In recent years, as the petro-leum industry attaches importance to unconventional oil and gas resources and the demand for fracturing construction to increase production of low-permeability oil and gas reservoirs have increased, microseismic monitoring has become an important geophysical technology in the world. With the continuous deepening of shale gas exploration and development, the vertical depth of the reservoir gradually increased from about 3000 m to below 4000 m, which has a certain impact on the effect of microseismic monitoring. How to optimize the monitoring plan, improve the monitoring effect, and promote the effective development of shale gas resources is currently the primary problem, then the adaptability of different monitoring methods has become a key factor. This paper takes the Huang 202 well area in the Sichuan Basin as an example, and use the down hole microseismic monitoring data to carry out comparative analysis with the down hole monitoring results of wells which are below 3500 m, and provide guidance for the monitoring plan of shale gas wells for over 4000 m in this area. The monitoring effect and the effect of increasing production have important value and practical significance.