公开(公告)号：US10451755B2

公开(公告)日：2019-10-22

申请号：US14419205

申请日：2013-07-31

Applicant: WESTERNGECO L.L.C.

Inventor： Colin Thomson

IPC: G01V1/30

Abstract: Processing data representing a wavefield propagating through a medium by defining, based on one or more properties of a region of the medium and of the wavefield therein, a desired timestep and a desired spatial step for a discrete operator. Discrete seed operators having an initial timestep and an initial spatial step less than the desired timestep and the desired spatial step are then defined, and these seed operators are compounded to obtain an operator having a greater timestep and upscaled to obtain an operator having a greater spatial step. The compounding and upscaling are repeated until an operator having the desired timestep and the desired spatial step is obtained. The operator having the desired timestep and the desired spatial step may be applied to the data representing the wavefield propagating through a medium to propagate the data backwards in time to recreate the wavefield at earlier times.

公开(公告)号：US20160125574A1

公开(公告)日：2016-05-05

申请号：US14531510

申请日：2014-11-03

Applicant: WESTERNGECO L.L.C.

Inventor： Colin Thomson ,  Philip Kitchenside ,  Robin Fletcher

IPC: G06T5/00

CPC classification number: G01V1/30 ,  G01V1/36 ,  G01V2210/67 ,  G01V2210/679

Abstract: Systems and methods for compensating for spatial and slowness or angle blurring of plane-wave reflection coefficients in imaging. A wave field may be determined at a reference depth proximate to a reflector for a shot record. A receiver-side blurring function may be determined at the reference depth. An aggregate blurring function may be constructed based at least partially on the source wave field and the receiver-side blurring function. A plane-wave reflection coefficients may be determined based at least partially on the aggregate blurring function.

Abstract translation: 用于补偿成像中平面波反射系数的空间和慢度或角度模糊的系统和方法。 可以在靠近用于射击记录的反射器的参考深度处确定波场。 可以在参考深度处确定接收机侧模糊功能。 可以至少部分地基于源波场和接收器侧模糊功能来构造聚合模糊功能。 可以至少部分地基于聚合模糊功能来确定平面波反射系数。

公开(公告)号：US09513390B2

公开(公告)日：2016-12-06

申请号：US14531510

申请日：2014-11-03

Applicant: WESTERNGECO L.L.C.

Inventor： Colin Thomson ,  Philip Kitchenside ,  Robin Fletcher

IPC: G01V1/28 ,  G01V1/30 ,  G01V1/36

CPC classification number: G01V1/30 ,  G01V1/36 ,  G01V2210/67 ,  G01V2210/679

Abstract: Systems and methods for compensating for spatial and slowness or angle blurring of plane-wave reflection coefficients in imaging. A wave field may be determined at a reference depth proximate to a reflector for a shot record. A receiver-side blurring function may be determined at the reference depth. An aggregate blurring function may be constructed based at least partially on the source wave field and the receiver-side blurring function. A plane-wave reflection coefficients may be determined based at least partially on the aggregate blurring function.

Abstract translation: 用于补偿成像中平面波反射系数的空间和慢度或角度模糊的系统和方法。 可以在靠近用于射击记录的反射器的参考深度处确定波场。 可以在参考深度处确定接收机侧模糊功能。 可以至少部分地基于源波场和接收器侧模糊功能来构造聚合模糊功能。 可以至少部分地基于聚合模糊功能来确定平面波反射系数。

公开(公告)号：US20150192686A1

公开(公告)日：2015-07-09

申请号：US14419205

申请日：2013-07-31

Applicant: WESTERNGECO L.L.C

Inventor： Colin Thomson

IPC: G01V1/30

CPC classification number: G01V1/30 ,  G01V2210/67 ,  G01V2210/679

Abstract: Processing data representing a wavefield propagating through a medium by defining, based on one or more properties of a region of the medium and of the wavefield therein, a desired timestep and a desired spatial step for a discrete operator. Discrete seed operators having an initial timestep and an initial spatial step less than the desired timestep and the desired spatial step are then defined, and these seed operators are compounded to obtain an operator having a greater timestep and upscaled to obtain an operator having a greater spatial step. The compounding and upscaling are repeated until an operator having the desired timestep and the desired spatial step is obtained. The operator having the desired timestep and the desired spatial step may be applied to the data representing the wavefield propagating through a medium to propagate the data backwards in time to recreate the wavefield at earlier times.

Abstract translation: 通过基于介质的区域和其中的波场的一个或多个属性定义用于离散算子的期望时间步长和期望的空间步长来处理表示通过介质传播的波场的数据。 然后定义具有小于所需时间步长和期望空间步长的初始时间步长和初始空间步长的离散种子运算符，并且将这些种子运算符复合以获得具有较大时间步长和放大的运算符，以获得具有较大空间的运算符 步。 重复复合和升高，直到获得具有期望的时间步长和期望的空间步长的操作者。 具有期望的时间步长和期望的空间步长的运算符可以应用于表示通过介质传播的波场的数据，以便在时间上向后传播数据，以便在较早的时间重建波场。