公开(公告)号：US20190011583A1

公开(公告)日：2019-01-10

申请号：US16027599

申请日：2018-07-05

Applicant: Chevron U.S.A. Inc.

Inventor： Anandaroop Ray ,  Sam T. Kaplan ,  John Kenneth Washbourne ,  Uwe K. Albertin

IPC: G01V1/30

Abstract: A method is described for full waveform inversion using a tree-based Bayesian approach which automatically selects the model complexity, thereby reducing the computational cost. The method may be executed by a computer system.

公开(公告)号：US10215869B2

公开(公告)日：2019-02-26

申请号：US15084657

申请日：2016-03-30

Applicant: CHEVRON U.S.A. INC.

Inventor： John Kenneth Washbourne ,  Kenneth Paul Bube ,  Raymond Andrew Ergas ,  Tamas Nemeth

IPC: G01V1/00 ,  G01V1/28 ,  G01V1/30

Abstract: A method is described that includes receiving one or more seismic measurements corresponding to a plurality of source and receiver locations and providing an earth model for a geologic medium having a heterogeneous tilted symmetry axis. The earth model includes a nonzero shear velocity in the direction of the symmetry axis. The one or more seismic measurements are propagated over a plurality of time-steps in accordance with the earth model and a set of energy-conservative self-adjoint pseudoacoustic equations. The set of energy-conservative self-adjoint pseudoacoustic equations describes one or more seismic wavefields.