公开(公告)号：US20240192393A1

公开(公告)日：2024-06-13

申请号：US18532849

申请日：2023-12-07

申请人： CHEVRON U.S.A. INC.

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

IPC分类号： G01V1/36 ,  G01V1/30

CPC分类号： G01V1/362 ,  G01V1/307 ,  G01V1/226

摘要： 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.

公开(公告)号：US11726230B2

公开(公告)日：2023-08-15

申请号：US17160636

申请日：2021-01-28

申请人： CHEVRON U.S.A. INC.

发明人： Kevin John Davies

IPC分类号： G01V8/24 ,  G01L1/24 ,  E21B49/00 ,  E21B47/005 ,  E21B47/007 ,  E21B33/14

CPC分类号： G01V8/24 ,  E21B33/14 ,  E21B47/005 ,  E21B47/007 ,  E21B49/00 ,  G01L1/242 ,  E21B2200/20

摘要： Strain and time-strain measurement in a well enables derivation of a constant that links the two. Knowledge of the constant along with time-strain measurement at another well enables estimation of strain at the other well.

公开(公告)号：US20180259663A1

公开(公告)日：2018-09-13

申请号：US15905929

申请日：2018-02-27

申请人： CHEVRON U.S.A. INC.

发明人： Kevin John Davies

IPC分类号： G01V1/34 ,  G01V1/38 ,  G01V1/30

CPC分类号： G01V1/345 ,  G01V1/301 ,  G01V1/302 ,  G01V1/308 ,  G01V1/3808 ,  G01V1/3861 ,  G01V2210/1212 ,  G01V2210/1293 ,  G01V2210/1423 ,  G01V2210/1427 ,  G01V2210/51

摘要： A method is described for processing Near Field Hydrophone (NFH) data including time or depth imaging for 3D and 4D high resolution geological interpretation. The method may include various combinations of source-NFH configurations, such as one or more NFH's mounted on both firing and or non-firing source arrays and source energy generated by cumulative air guns or air gun clusters firing on the active source array and/or individual air guns or air gun clusters firing on the active source array, whether fired simultaneously or non-simultaneously. The method may be executed by a system.

公开(公告)号：US20220236445A1

公开(公告)日：2022-07-28

申请号：US17160636

申请日：2021-01-28

申请人： CHEVRON U.S.A. INC.

发明人： Kevin John Davies

IPC分类号： G01V8/24 ,  G01L1/24 ,  E21B49/00 ,  E21B33/14 ,  E21B47/005 ,  E21B47/007

摘要： Strain and time-strain measurement in a well enables derivation of a constant that links the two. Knowledge of the constant along with time-strain measurement at another well enables estimation of strain at the other well.

公开(公告)号：US11243321B2

公开(公告)日：2022-02-08

申请号：US15971829

申请日：2018-05-04

申请人： Chevron U.S.A. Inc.

发明人： Kevin John Davies

IPC分类号： G01V1/36 ,  G01V1/22 ,  G01V1/38

摘要： One embodiment includes receiving distributed acoustic sensing (DAS) data for responses associated with seismic excitations in an area of interest. The area of interest includes a sea surface, the water column, a seafloor, and a subseafloor. The seismic excitations are generated by at least one seismic source in the area of interest. The responses are detected by at least one fiber optic sensing apparatus configured for DAS that is in the water column, on the seafloor, in a wellbore drilled through the seafloor and into the subseafloor, or any combination thereof. The embodiment includes determining a function of speed of sound in water using the DAS data, and correcting a digital seismic image associated with the area of interest using the function of speed of sound in water to generate a corrected digital seismic image.

公开(公告)号：US11079508B2

公开(公告)日：2021-08-03

申请号：US16163806

申请日：2018-10-18

申请人： Chevron U.S.A. Inc.

发明人： Lei Zhuo ,  Thor Johnsen ,  Kevin John Davies

IPC分类号： G01V1/30 ,  G01V1/38

摘要： A method is described for seismic modeling implemented on a computer system including multiple computer nodes, which includes receiving, at a computer processor, a 4D speed of sound in water library and a marine seismic survey geometry; creating, via the computer processor, a full survey 3D Earth model for each seismic shot time based on the 4D speed of sound in water library to generate a set of dynamic 3D Earth models; simulating 4D seismic shots for the set of dynamic 3D Earth models by simulating multiple shots on each node to generate a set of 4D seismic shot gathers; and outputting the 4D seismic shot gathers.

公开(公告)号：US20190339408A1

公开(公告)日：2019-11-07

申请号：US15971829

申请日：2018-05-04

申请人： Chevron U.S.A. Inc.

发明人： Kevin John Davies

IPC分类号： G01V1/36 ,  G01V1/22 ,  G01V1/38

摘要： One embodiment includes receiving distributed acoustic sensing (DAS) data for responses associated with seismic excitations in an area of interest. The area of interest includes a sea surface, the water column, a seafloor, and a subseafloor. The seismic excitations are generated by at least one seismic source in the area of interest. The responses are detected by at least one fiber optic sensing apparatus configured for DAS that is in the water column, on the seafloor, in a wellbore drilled through the seafloor and into the subseafloor, or any combination thereof. The embodiment includes determining a function of speed of sound in water using the DAS data, and correcting a digital seismic image associated with the area of interest using the function of speed of sound in water to generate a corrected digital seismic image.