公开(公告)号：US20150030209A1

公开(公告)日：2015-01-29

申请号：US13952831

申请日：2013-07-29

Applicant: WESTERNGECO L.L.C.

Inventor： AICHA BOUNAIM ,  ODA ROALDSDOTTER RAVNDAL ,  JARLE HAUKÅS

IPC: G01V1/30 ,  G06K9/00

CPC classification number: G01V1/301 ,  G01V1/345 ,  G01V2210/66

Abstract: A method of analysing seismic data from a geological volume is provided. The geological volume is divided into a plurality of voxels. For each voxel a respective neighbourhood is defined which includes that voxel and a predetermined arrangement of neighbouring voxels. For each voxel, the respective normal vectors of a seismic attribute vector field derived from the seismic data are calculated. For each voxel, a respective local structure tensor based on the normal vectors of the voxels of the respective neighbourhood is calculated. For each voxel, the value of an expression which includes one or more of the eigenvalues (λ1, λ2, λ3) of the respective local structure tensor is calculated. The method can be used for seismic surveying, or to manage operation of or drilling of a subterranean well.

Abstract translation: 提供了一种从地质体积分析地震数据的方法。 地质体积分为多个体素。 对于每个体素，定义相应的邻域，其包括体素和相邻体素的预定排列。 对于每个体素，计算从地震数据导出的地震属性向量场的各自的法向量。 对于每个体素，计算基于相应邻域的体素的法向量的相应局部结构张量。 对于每个体素，计算包括各个局部结构张量的一个或多个特征值（λ1，λ2，λ3）的表达式的值。 该方法可用于地震测量，或用于管理地下井的作业或钻井。

公开(公告)号：US20140214327A1

公开(公告)日：2014-07-31

申请号：US13752160

申请日：2013-01-28

Applicant: WESTERNGECO L.L.C.

Inventor： ODA ROALDSDOTTER RAVNDAL ,  JARLE HAUKÅS ,  BJØRN HARALD FOTLAND ,  LARS SØNNELAND

IPC: G01V1/24

CPC classification number: G01V99/005 ,  G01V1/302 ,  G01V2210/644

Abstract: A method of determining a migration pathway of a subterranean fluid through a geological volume is provided. The starting object is located within the geological volume. The starting object defines an initial fluid boundary. Data points are distributed through the geological volume. The data points are associated with values of one or more geological attributes. The method includes the steps of: defining an expression which determines a change in position of the fluid boundary at the data points over an iteration based on the values of the one or more attributes; and applying the expression at the data points for successive iterations to evolve the fluid boundary over the successive iterations. The migration pathway of the subterranean fluid through the geological volume can then be determined from the evolution of the fluid boundary.

Abstract translation: 提供了一种确定地下流体通过地质体积的迁移路径的方法。 起始物体位于地质体积内。 起始对象定义初始流体边界。 数据点通过地质体积分布。 数据点与一个或多个地质属性的值相关联。 该方法包括以下步骤：基于一个或多个属性的值来定义确定在迭代中的数据点处的流体边界的位置变化的表达式; 并在数据点处应用表达式进行连续迭代，以在连续迭代中演化流体边界。 然后可以从流体边界的演化来确定地下流体通过地质体积的迁移路径。

公开(公告)号：US20140214328A1

公开(公告)日：2014-07-31

申请号：US13752183

申请日：2013-01-28

Applicant: WESTERNGECO L.L.C.

Inventor： JARLE HAUKÅS ,  ODA ROALDSDOTTER RAVNDAL ,  LARS SØNNELAND

IPC: G01V1/28

CPC classification number: G01V1/302 ,  G01V1/288 ,  G01V1/345 ,  G01V2210/64 ,  G01V2210/667

Abstract: A method of extracting a salt body from a geological volume is provided. A starting object is located within the geological volume. The starting object defines an initial salt body boundary. Data points are distributed through the geological volume. The data points are associated with values of one or more geological attributes. The method includes the steps of: defining an expression which determines a change in position of the salt body boundary at the data points over an iteration based on the values of the one or more attributes; and applying the expression at the data points for successive iterations to evolve the salt body boundary over the successive iterations until a final form for the evolved salt body is achieved.

Abstract translation: 提供了从地质体积提取盐体的方法。 起始物体位于地质体积内。 起始对象定义初始盐体边界。 数据点通过地质体积分布。 数据点与一个或多个地质属性的值相关联。 该方法包括以下步骤：基于一个或多个属性的值，定义确定在迭代中的数据点处的盐体边界的位置变化的表达式; 并在数据点应用表达式进行连续迭代，以在连续迭代中演化盐体边界，直到达到演化盐体的最终形式。