公开(公告)号：US20170023687A1

公开(公告)日：2017-01-26

申请号：US15143182

申请日：2016-04-29

申请人： Global Ambient Seismic, Inc.

发明人： Charles John Sicking ,  Dylan Matthew Copeland

IPC分类号： G01V1/30 ,  G01V1/28

CPC分类号： G01V1/302 ,  G01V1/288 ,  G01V2210/1234 ,  G01V2210/1299 ,  G01V2210/1425 ,  G01V2210/646 ,  G01V2210/65

摘要： The invention comprises a method of imaging a volume of the earth's subsurface. A selected volume of the earth's subsurface is divided into a three-dimensional grid of voxels. Seismic signals representing seismic energy emanating from the earth's subsurface and detected by sensors deployed in proximity to said selected subsurface volume and conducted to a recorder for recording. The recorded signals are transformed into a grid of discrete voxel signals representing energy emanating from voxels included in said three-dimensional grid of voxels in the earth's subsurface. A smooth analytic function is defined in three dimensional space based on the grid of discrete voxel signals; and fracture surfaces are derived from the smooth analytic function.

摘要翻译： 本发明包括对地球表面的体积进行成像的方法。 选定体积的地球表面被划分为体素的三维网格。 地震信号表示从地球表面发出的地震能量，并由所述选定的地下体积附近的传感器检测，并传送到记录仪进行记录。 记录的信号被转换成离散体素信号的网格，其表示从包括在地球表面的体素的所述三维网格中的体素发出的能量。 基于离散体素信号的网格，在三维空间中定义了平滑的分析函数; 断裂面由平滑分析函数得出。

公开(公告)号：US20160231444A1

公开(公告)日：2016-08-11

申请号：US14944985

申请日：2015-11-18

申请人： Global Ambient Seismic, Inc. Missouri City 77489

发明人： Alfred Lacazette ,  Peter Anderson Geiser

IPC分类号： G01V1/28 ,  G01V1/42

CPC分类号： G01V1/288 ,  G01V1/42 ,  G01V2210/1234 ,  G01V2210/646 ,  G01V2210/65

摘要： Disclosed are various embodiments of methods for identifying faults and fractures, and other permeable features, within geologic layers during a drilling operation comprising; recording microseismic data during a drilling operation; recording times and positions of a drill bit in a well bore during the drilling operation; processing microseismic data at a plurality of selected times and locations to image microseismic events and identifying faults and fractures, and other permeable features, from corresponding images of microseismic events. In other embodiments, the integrity of a cementing operation may be verified by recording microseismic data during a cementing operation; recording times and positions of a cementing operation in a well bore during the cementing operation; processing microseismic data at a plurality of selected times and locations to image microseismic events and identifying faults and fractures, and other permeable features, within the cemented zone from corresponding images of microseismic events.

摘要翻译： 公开了用于在钻井操作期间在地质层内识别断层和断裂以及其它可渗透特征的方法的各种实施例，包括： 在钻井作业期间记录微震数据; 在钻井操作期间钻孔在钻井中的记录时间和位置; 在多个选定的时间和位置处理微震数据，以对来自微震事件的相应图像的微震事件和识别故障和断裂以及其他可渗透特征进行成像。 在其他实施例中，可以通过在固井操作期间记录微震数据来验证固井操作的完整性; 在固井作业期间钻井作业中的固井作业的记录时间和位置; 在多个选定的时间和位置处理微震数据，以对来自微震事件的相应图像的胶结区域内的微震事件和识别故障和断裂以及其他可渗透特征进行成像。