公开(公告)号：US20210405234A1

公开(公告)日：2021-12-30

申请号：US16912703

申请日：2020-06-25

Applicant: Chevron U.S.A. Inc.

Inventor： Kellen Leigh Gunderson ,  Chris Anthony Guzofski

IPC: G01V1/30

Abstract: A method is described for assessing subsurface structure uncertainty based on at least one subsurface horizon. The method calculates seismic continuity attributes to determine a mappability of the subsurface horizon(s); determines horizontal uncertainty for each fault in vertical uncertainty for each horizon; generates probabilistic scenarios for a subsurface geometry for at least one conceptual model; and generates a map of geological model uncertainty based on the probabilistic scenarios. In some embodiments, the probabilistic scenarios are stochastic simulations. In some embodiments, generating a map of geological model uncertainty is based on information entropy. The method may be executed by a computer system.

公开(公告)号：US11320553B2

公开(公告)日：2022-05-03

申请号：US16912703

申请日：2020-06-25

Applicant: Chevron U.S.A. Inc.

Inventor： Kellen Leigh Gunderson ,  Chris Anthony Guzofski

IPC: G01V1/30

Abstract: A method is described for assessing subsurface structure uncertainty based on at least one subsurface horizon. The method calculates seismic continuity attributes to determine a mappability of the subsurface horizon(s); determines horizontal uncertainty for each fault in vertical uncertainty for each horizon; generates probabilistic scenarios for a subsurface geometry for at least one conceptual model; and generates a map of geological model uncertainty based on the probabilistic scenarios. In some embodiments, the probabilistic scenarios are stochastic simulations. In some embodiments, generating a map of geological model uncertainty is based on information entropy. The method may be executed by a computer system.