公开(公告)号：US20230257644A1

公开(公告)日：2023-08-17

申请号：US17920979

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH ,  Kerry Kennedy SPILKER ,  Robert George SHONG

IPC: C09K8/584 ,  C09K8/60 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22

CPC classification number: C09K8/584 ,  C09K8/604 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22 ,  E21B43/26

Abstract: The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.

公开(公告)号：US11726230B2

公开(公告)日：2023-08-15

申请号：US17160636

申请日：2021-01-28

Applicant: CHEVRON U.S.A. INC.

Inventor： Kevin John Davies

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

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

Abstract: 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：US20230252348A1

公开(公告)日：2023-08-10

申请号：US18049149

申请日：2022-10-24

Applicant: Chevron U.S.A. Inc. ,  University of Southern California

Inventor： Yining DONG ,  Alisha DESHPANDE ,  Yingying ZHENG ,  Lisa Ann BRENSKELLE ,  Si-Zhao QIN

IPC: G06N20/00 ,  G05B19/418 ,  G05B19/408 ,  G05B19/406 ,  G06F9/54 ,  G06F18/23 ,  G06F18/2135

CPC classification number: G06N20/00 ,  G05B19/406 ,  G05B19/408 ,  G05B19/41885 ,  G06F9/542 ,  G06F18/23 ,  G06F18/2135

Abstract: Methods and systems for building and maintaining model(s) of a physical process are disclosed. One method includes receiving training data associated with a plurality of different data sources, and performing a clustering process to form one or more clusters. For each of the one or more clusters, the method includes building a data model based on the training data associated with the data sources in the cluster, automatically performing a data cleansing process on operational data based on the data model, and automatically updating the data model based on updated training data that is received as operational data. For data sources excluded from the clusters, automatic building, data cleansing, and updating of models can also be applied.

公开(公告)号：US20230251240A1

公开(公告)日：2023-08-10

申请号：US18003420

申请日：2020-07-01

Applicant: Chevron U.S.A. Inc.

Inventor： Eliza Mathia ,  Paul Montgomery ,  Kenneth Thomas Ratcliffe

IPC: G01N33/24 ,  G01N23/223 ,  G01N21/3563

CPC classification number: G01N33/24 ,  G01N23/223 ,  G01N21/3563 ,  G01N2201/127 ,  G01N2021/3595

Abstract: A method comprises determining an amount of excess silica and/or an amount of terrigenous silica in a rock sample taking into account a measurement indicative of an amount of silica in the rock sample and a measurement indicative of an amount of zirconium in the rock sample.

公开(公告)号：US11719843B2

公开(公告)日：2023-08-08

申请号：US16840551

申请日：2020-04-06

Applicant: CHEVRON U.S.A. INC.

Inventor： Stephen Allan Horne

IPC: G01V1/50 ,  G01V1/30 ,  G01V5/12 ,  G01V11/00

CPC classification number: G01V1/50 ,  G01V1/306 ,  G01V5/12 ,  G01V11/002 ,  G01V2210/47 ,  G01V2210/626

Abstract: Embodiments of determining a vertically transverse isotropy (VTI) anisotropy along a horizontal section of a wellbore drilled into a formation are provided. One embodiment comprises determining elastic constants C11, C44, and C66 of the horizontal section and determining a vertical compressional slowness of the horizontal section corresponding to an elastic constant C33 of the horizontal section using a model with a condition. The model is built using second sonic log data and second density log data of the vertical wellbore. The condition is that the shear slowness (DTS) of the vertical wellbore is equal to the vertically polarized shear slowness (DTSV) of the horizontal section. The embodiment further comprises determining a VTI anisotropy along the horizontal section using the elastic constants C11, C44, C66, and C33 of the horizontal section.

公开(公告)号：US20230243992A1

公开(公告)日：2023-08-03

申请号：US18003449

申请日：2020-07-01

Applicant: Chevron U.S.A. Inc.

Inventor： Paul Montgomery ,  Kenneth Thomas Ratcliffe ,  Eliza Mathia ,  Marcus Oliver Wigand

IPC: G01V1/46 ,  G01V1/50 ,  G01N33/24 ,  E21B47/04

CPC classification number: G01V1/46 ,  G01V1/50 ,  G01N33/24 ,  E21B47/04

Abstract: A method comprises determining stratigraphic correlations between two or more sets of stratigraphic measurements. Each set of stratigraphic measurements is obtained from a different lateral well in a region.

公开(公告)号：US20230235660A1

公开(公告)日：2023-07-27

申请号：US18159626

申请日：2023-01-25

Applicant: Chevron U.S.A. Inc.

Inventor： Han-Young PARK ,  Baosheng LIANG ,  Yunhui TAN

IPC: E21B47/022

CPC classification number: E21B47/022 ,  E21B2200/20 ,  E21B2200/22

Abstract: A system and method for uncertainty estimation of reservoir parameters in unconventional reservoirs using a physics-guided convolutional neural network to generate a plurality of reservoir models, a data analysis step, and an uncertainty step is disclosed. The method is a computationally efficient method to estimate uncertainties in models of unconventional reservoirs.

公开(公告)号：US20230235646A1

公开(公告)日：2023-07-27

申请号：US18100775

申请日：2023-01-24

Applicant: Chevron U.S.A. Inc.

Inventor： Wei Wang ,  Wei Wei ,  Chao Yan ,  Gregory A. Winslow ,  Lauren N. DeVoe ,  Baosheng Liang

IPC: E21B37/06 ,  E21B43/26

CPC classification number: E21B37/06 ,  E21B43/26 ,  E21B49/02

Abstract: A method for evaluating and optimizing scale management at a subsurface for improved well performance may include performing multiple first tests, where each first test combines a first fluid with a second fluid, wherein the first fluid comprises a concentration of a scale inhibitor and a chemistry of additional fluid components. The method may also include identifying an optimal mixture of the first fluid among the first tests, where the optimal mixture comprises a minimum concentration of the scale inhibitor that reduces scale deposition. The method may further include performing a second test that combines the first fluid with the scale inhibitor, the second fluid, and rock. The method may also include evaluating a concentration of the scale inhibitor in aqueous phase after a period of time after initiating the second test. The method may further include identifying a target fluid for use in a field operation at the subsurface.

公开(公告)号：US11708277B2

公开(公告)日：2023-07-25

申请号：US17372660

申请日：2021-07-12

Applicant: CHEVRON U.S.A. INC.

Inventor： Stacey Ian Zones

IPC: C01B39/48

CPC classification number: C01B39/48

Abstract: A method is described for the synthesis of aluminosilicate CHA framework type molecular sieves at ambient pressure via interzeolite conversion from FAU framework type zeolites.

公开(公告)号：US20230204815A1

公开(公告)日：2023-06-29

申请号：US17562629

申请日：2021-12-27

Applicant: CHEVRON U.S.A. INC.

Inventor： Shane James Prochnow ,  Benjamin Rodolphe Cormier ,  Vahid Tohidi ,  Michelle Wan

IPC: G01V99/00 ,  G01V11/00 ,  G06N20/20

CPC classification number: G01V99/005 ,  G01V11/002 ,  G06N20/20

Abstract: Methods, systems, and non-transitory computer readable media for identifying type curve regions as a function of position in a region of interest are disclosed. Exemplary implementations may include: obtaining a spatial clustering model from the non-transitory storage medium; obtaining well data from the non-transitory storage medium; obtaining production parameter data from the non-transitory storage medium; and delineating each of the type curve regions in the region of interest by applying the spatial clustering model to the well data and the production parameter data.