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公开(公告)号：US10884147B2
公开(公告)日：2021-01-05
申请号：US15835656
申请日：2017-12-08
Applicant: CHEVRON U.S.A. INC.
Inventor： Julian A. Thorne , Andrew Royle , Michael Pyrcz , Sebastien B. Strebelle
Abstract: A computer implemented method for identifying reservoir facies in a subsurface region includes obtaining a set of seismic data points of both petrophysical and geophysical parameters relating to the subsurface region, identifying one or more correlated clusters of petrophysical parameters, generating, from the one or more correlated clusters of petrophysical parameters, one or more corresponding multi-dimensional clusters of seismic data points, storing, in a facies database, a multi-dimensional cluster center point for at least one multi-dimensional clusters, and recursively splitting the multi-dimensional clusters into distinct sub-clusters of seismic data points corresponding to facies types.
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公开(公告)号：US20200165911A1
公开(公告)日：2020-05-28
申请号：US16673691
申请日：2019-11-04
Applicant: CHEVRON U.S.A. INC.
Inventor： Julian A. Thorne
Abstract: A method is described for automated post-geosteering including receiving a pilot well log and a lateral well log with an initial lateral well path; performing automated post-geosteering to generate a corrected well path image; and displaying the corrected well path image on a graphical display. The method may be executed by a computer system.
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公开(公告)号：US20220245445A1
公开(公告)日：2022-08-04
申请号：US17164099
申请日：2021-02-01
Applicant: Chevron U.S.A. Inc.
Inventor： Julian A. Thorne
Abstract: A method is described for data analytics using highly-correlated features which includes receiving a training dataset representative of a subsurface volume of interest; identifying at least two highly-correlated features in the training dataset; calculating a trend of the at least two highly-correlated features; calculating a residual of at least one of the highly-correlated features and the trend; and using data analytic methods on features in the training dataset that include one or more of these trend and residual combinations to predict a response variable. The method may be executed by a computer system.
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公开(公告)号：US20210063592A1
公开(公告)日：2021-03-04
申请号：US16551219
申请日：2019-08-26
Applicant: CHEVRON U.S.A. INC.
Inventor： Julian A. Thorne
Abstract: Systems and methods are disclosed for generating a set of facies realizations. A computer-implemented method may use a computer system that includes a physical computer processor and data storage. The computer-implemented method may include: obtaining a geobody index, obtaining facies probability vectors for the multiple geobodies, assigning facies to the multiple geobodies based on the facies probability vectors, obtaining a target facies proportion for the subsurface volume of interest, reassigning a first geobody having a first facies based on a first facies probability vector of the first geobody, and reassigning remaining ones of the multiple geobodies with different facies.
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公开(公告)号：US10908308B1
公开(公告)日：2021-02-02
申请号：US16522445
申请日：2019-07-25
Applicant: Chevron U.S.A. Inc.
Inventor： Julian A. Thorne
Abstract: A method is described for generating a reservoir property model based on the quality of a seismic inversion product. The method may include receiving a seismic inversion product volume, a seismic attribute volume, and well data from wells drilled in a subsurface volume of interest; identifying collocated cells in the seismic volumes which correspond to the well data; creating attribute vectors from the seismic volumes in each of the collocated cells and a range of neighboring cells; calculating a seismic inversion error magnitude property at the collocated cells; training a data analytics method to predict the observed seismic inversion error magnitude property; verifying that the data analytics method accurately predicts the seismic inversion error magnitude using cross-validation; generating an inversion quality volume; and generating the reservoir property model based on the inversion quality volume. The method may be executed by a computer system.
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Patent Agency Ranking
公开(公告)号：US20220245535A1
公开(公告)日：2022-08-04
申请号：US17164115
申请日：2021-02-01
Applicant: Chevron U.S.A. Inc.
Inventor： Julian A. Thorne
Abstract: A method is described for data analytics including receiving a dataset representative of a subsurface volume of interest; identifying at least two features in the dataset; performing optimization methods to fit the at least two features to a response variable; calculating partial dependency functions of the at least two features; calculating a simplicity of each of the partial dependency functions; calculating an importance of each of the at least two features; selecting at least one highly ranked feature based on a combination of the simplicity and the importance; and performing optimization methods to fit the at least one highly ranked feature to a response variable. The method may be executed by a computer system.
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公开(公告)号：US20220245534A1
公开(公告)日：2022-08-04
申请号：US17164062
申请日：2021-02-01
Applicant: Chevron U.S.A. Inc.
Inventor： Julian A. Thorne
Abstract: A method is described for data analytics including receiving a set of M variables representative of a subsurface volume of interest, derived from one or more of co-located well-log data, seismic data, and production data; performing a global optimum branch-and-bound algorithm to find a collection of N variables from the set of M variables that achieve the best fit in multiple regression; adding random variables to the collection of N variables; a slightly non-linear optimization until a statistically significant percentage of the random variables are eliminated; and performing, a highly non-linear optimization to select a final set of features. The method may be executed by a computer system.
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公开(公告)号：US20220245478A1
公开(公告)日：2022-08-04
申请号：US17164081
申请日：2021-02-01
Applicant: Chevron U.S.A. Inc.
Inventor： Julian A. Thorne
Abstract: A method is described for data analytics including receiving a training dataset representative of a subsurface volume of interest with co-located measured explanatory features and a response feature; generating an ensemble of models using an ensemble of decision tree regressions; generating a surrogate model by fitting response surfaces of the ensemble of models with a power law combination of each of the explanatory features, and products and ratios of each pair of the explanatory features; receiving a second dataset of explanatory features from locations away from the co-located measured explanatory features, wherein the second dataset of explanatory features are a same type as the co-located measured explanatory features; and generating, using the surrogate model a smooth prediction of the response feature based on the second dataset of explanatory features. The method may be executed by a computer system.
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公开(公告)号：US11269099B2
公开(公告)日：2022-03-08
申请号：US16551219
申请日：2019-08-26
Applicant: CHEVRON U.S.A. INC.
Inventor： Julian A. Thorne
Abstract: Systems and methods are disclosed for generating a set of facies realizations. A computer-implemented method may use a computer system that includes a physical computer processor and data storage. The computer-implemented method may include: obtaining a geobody index, obtaining facies probability vectors for the multiple geobodies, assigning facies to the multiple geobodies based on the facies probability vectors, obtaining a target facies proportion for the subsurface volume of interest, reassigning a first geobody having a first facies based on a first facies probability vector of the first geobody, and reassigning remaining ones of the multiple geobodies with different facies.
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公开(公告)号：US11180981B2
公开(公告)日：2021-11-23
申请号：US16673691
申请日：2019-11-04
Applicant: CHEVRON U.S.A. INC.
Inventor： Julian A. Thorne
Abstract: A method is described for automated post-geosteering including receiving a pilot well log and a lateral well log with an initial lateral well path; performing automated post-geosteering to generate a corrected well path image; and displaying the corrected well path image on a graphical display. The method may be executed by a computer system.
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