公开(公告)号：US20240192393A1

公开(公告)日：2024-06-13

申请号：US18532849

申请日：2023-12-07

Applicant: CHEVRON U.S.A. INC.

Inventor： Ivan Lim Chen Ning ,  Laura Catherine Swafford ,  Michael Eric Craven ,  Kevin John Davies

IPC: G01V1/36 ,  G01V1/30

CPC classification number: G01V1/362 ,  G01V1/307 ,  G01V1/226

Abstract: Systems and methods are provided for correcting distributed acoustic sensing (DAS) data. The system can receive a seismic dataset with a plurality of initial seismic phase picks and a plurality of traces, and cross-correlate each of the plurality of initial seismic phase picks using the plurality of traces as reference traces. Each initial seismic phase pick can receive a set of corrected phase picks. The system can calculate a probability density function for each set of corrected phase picks. The system can select a peak of each probability density functions as accurate seismic phase picks. These accurate seismic phase picks can be used for event location in the DAS data.