Method for imaging microseismic events using an azimuthally-dependent focal mechanism
    7.
    发明授权
    Method for imaging microseismic events using an azimuthally-dependent focal mechanism 有权
    使用方位角依赖性焦点机制对微震事件进行成像的方法

    公开(公告)号:US09001619B2

    公开(公告)日:2015-04-07

    申请号:US13277178

    申请日:2011-10-19

    IPC分类号: G01V1/28 G01V1/30

    摘要: Disclosed herein are various embodiments of methods and systems for determining the orientation and direction of first motion of a fault or fracture by optimizing an azimuthally-dependent attribute of signals generated by microseismic sources, comprising: recording microseismic data traces using a of sensors located at a plurality of sensor positions; subdividing the subsurface volume into spatial volumes corresponding to selected time intervals and comprising a plurality of voxels; for each voxel, applying a time shift to the microseismic data traces that is substantially equal to a travel time from each voxel to the corresponding sensor position, and determining for the voxel the orientation and direction of first motion of the fault or fracture corresponding to a maximum value for the voxel of at least one azimuthally-dependent attribute of the microseismic data traces.

    摘要翻译: 本文公开了用于通过优化由微震源产生的信号的方位角依赖属性来确定故障或断裂的第一运动的取向和方向的方法和系统的各种实施例,包括:使用位于 多个传感器位置; 将地下体积细分为对应于所选择的时间间隔的空间体积并且包括多个体素; 对于每个体素,对基本上等于从每个体素到相应传感器位置的行进时间的微震数据轨迹应用时移,并且为体素确定与一个对应的传感器位置相对应的故障或断裂的第一运动的取向和方向 至少一个微震数据轨迹的方位依赖属性的体素的最大值。

    Method for Imaging Microseismic Events Using an Azimuthally-dependent Focal Mechanism
    8.
    发明申请
    Method for Imaging Microseismic Events Using an Azimuthally-dependent Focal Mechanism 有权
    使用方位角依赖性焦点机制成像微震事件的方法

    公开(公告)号:US20130100770A1

    公开(公告)日:2013-04-25

    申请号:US13277178

    申请日:2011-10-19

    IPC分类号: G01V1/00

    摘要: Disclosed herein are various embodiments of methods and systems for determining the orientation and direction of first motion of a fault or fracture by optimizing an azimuthally-dependent attribute of signals generated by microseismic sources, comprising: recording microseismic data traces using a of sensors located at a plurality of sensor positions; subdividing the subsurface volume into spatial volumes corresponding to selected time intervals and comprising a plurality of voxels; for each voxel, applying a time shift to the microseismic data traces that is substantially equal to a travel time from each voxel to the corresponding sensor position, and determining for the voxel the orientation and direction of first motion of the fault or fracture corresponding to a maximum value for the voxel of at least one azimuthally-dependent attribute of the microseismic data traces.

    摘要翻译: 本文公开了用于通过优化由微震源产生的信号的方位角依赖属性来确定故障或断裂的第一运动的取向和方向的方法和系统的各种实施例,包括:使用位于 多个传感器位置; 将地下体积细分为对应于所选择的时间间隔的空间体积并且包括多个体素; 对于每个体素,对基本上等于从每个体素到相应传感器位置的行进时间的微震数据轨迹应用时移,并且为体素确定与一个对应的传感器位置相对应的故障或断裂的第一运动的取向和方向 至少一个微震数据轨迹的方位角依赖属性的体素的最大值。