摘要
数据采集是水力压裂微震监测技术的基础,其品质高低决定了微震监测的成败。合理设计观测系统有助于提高监测数据品质。使用模型数据和实际监测数据,分析了现有观测系统对微震事件的初至信息和极化特征两个重要参数的影响。提出对观测系统进行改进:加大检波器间距,单边布置检波器和安装临时桥塞器;以此弥补检波器有限的不足和注压流体对于微震事件信号的干扰,进而提升微震监测数据的品质,有利于提高微震震源定位精度。
Data acquisition is the basis of microseismic monitoring of hydraulic fracture.The success of monito-ring depends on the qulity of monitoring record.The reasonable design of monitoring geometry can improve the quli-ty of monitoring record.By using model and field record,it is illustrated that monitoring geometry has effect on first-arrival information and polarization of microseismic event.Some methods are proposed to optimize the monito-ring geometry design.The methods include increasing the space distance between geophones,keeping reasonable distance between geophone and fractured reservoir and installing bridge plug at the end of geophones to suppress the interference of fracturing noise.
作者
王鹏
常旭
王一博
周军
WANG Peng;CHANG Xu;WANG Yi-bo;ZHOU Jun(Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Wuhan 430100 , P. R. China;Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, P. R. China;Key Laboratory of Exploration Technologies for Oil and Gas Resources ( Yangtze University) , Ministry of Education, Wuhan 430100, P. R. China;China Petroleum Logging CO.LTD .,Xi’an 710077,P. R. China)
出处
《科学技术与工程》
北大核心
2016年第30期61-67,共7页
Science Technology and Engineering
基金
国家自然科学基金项目(41230317,41274112)
中国石油集团工程专项(2013E-3809)联合资助
关键词
微震监测
观测系统
优化设计
初至
极化
microseismic monitoring
geometry
optimization design
first arrival
polarization