公开(公告)号：US11644593B2

公开(公告)日：2023-05-09

申请号：US16682981

申请日：2019-11-13

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Chao Gao ,  Travis St. George Ramsay ,  Felix Segovia

IPC: G01V1/30 ,  G01V1/36

CPC classification number: G01V1/308 ,  G01V1/36 ,  G01V2210/512 ,  G01V2210/514

Abstract: A system and method can be used for to calibrating time-lapse seismic volumes by cross-migration rescaling and reorientation for use in determining optimal wellbore placement or production in a subsurface environment. Certain aspects include methods for cross-migration of data sets processed using different migration techniques. Pre-processing of the data sets, optimization of rescaling and reorientation, and identification of adjustment parameters associated with minimum global error can be used to achieve a time-dependent formation data set that addresses error in all input data sets.

公开(公告)号：US11079510B2

公开(公告)日：2021-08-03

申请号：US16063834

申请日：2016-02-19

Applicant: Landmark Graphics Corporation

Inventor： Kainan Wang ,  Jesse Lomask ,  Felix Segovia

IPC: G01V1/48 ,  G01V1/28 ,  G01V1/42 ,  E21B47/00

Abstract: A system and method are provided for correlating well log data and seismic data corresponding to subterranean formations to generate a seismic well tie that preserves blocking schemes associated with the well log data and constraints corresponding to each block of samples. The seismic well tie may be generated by correlating samples of the well log data with the seismic data by shifting at least some of the samples and using the constraint on changes to the sample values to prevent the sample values of each of the one or more blocks of the samples from changing beyond the constraint. In some aspects, the constraints may relate to a constant velocity or a linearly changing velocity within various blocks of the well log data.