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    • 8. 发明申请
    • SYSTEM AND METHOD FOR NARROW BEAM SCANNING MICROSEISMIC MONITORING
    • 用于窄光束扫描微观监测的系统和方法
    • WO2013006794A1
    • 2013-01-10
    • PCT/US2012/045765
    • 2012-07-06
    • DILLER, David
    • DILLER, David
    • G01V1/30
    • G01V1/288G01V2210/123G01V2210/65
    • Disclosed herein are various embodiments of methods and systems for optimizing signals generated by microseismic sources, comprising recording microseismic data using patches of geophones, filtering the data to impart a directionality to the data, and performing a source scan to determine the times and locations of microseismic events. The subsurface is divided into a voxel grid that is further subdivided into subgrids. Using a filter designed for each patch-subgrid pair, only data arriving within a predetermined angle of incidence are input to the source scan, thus reducing noise, and enhancing the quality and accuracy of the identified microseismic events. The method is also applicable to data previously recorded with sensor grids or other arrays such as star arrays.
    • 本文公开了用于优化由微震源产生的信号的方法和系统的各种实施例,包括使用地震检波器的区块记录微震数据,过滤数据以赋予数据的方向性,以及执行源扫描以确定微震的时间和位置 事件。 地下分为一个体素网格,进一步细分为子网格。 使用为每个贴片 - 子网对设计的滤波器,仅将到达预定入射角的数据输入到源扫描,从而降低噪声,并且增强所识别的微震事件的质量和准确性。 该方法也适用于以前使用传感器网格或其他阵列(如星形阵列)记录的数据。