公开(公告)号：US20230341576A1

公开(公告)日：2023-10-26

申请号：US18159536

申请日：2023-01-25

Applicant: Chevron U.S.A. Inc. ,  CHEVRON CANADA LIMITED

Inventor： Andrey H. Shabelansky ,  Kurt T. Nihei ,  Dimitri Bevc ,  Gian Luigi Fradelizio ,  Sinead M. Tracey

IPC: G01V1/28 ,  G01V1/18 ,  G01V1/34

CPC classification number: G01V1/288 ,  G01V1/282 ,  G01V1/189 ,  G01V1/345

Abstract: A method is described for monitoring a stimulated reservoir volume (SRV) including receiving simulation parameters, performing 3D fully coupled quasi-static poro-elastic finite difference modeling using the simulation parameters, wherein the 3D fully coupled quasi-static poro-elastic finite difference modeling is based on a rescaling of solid rock and fluid flow density parameters and generates simulated temporal quasi-static stresses, and pore pressure. In addition, simulated stresses may be used for performing calculation of the 3D rotation of the simulated stresses to principal directions; performing calculation of the temporal 3D Mohr-Coulomb (MC) failure criteria from the calculated principal stresses and the simulated pore pressure for all or selected time steps; and displaying the computed temporal MC failure criteria results on a graphical display. The method may also be used in time-lapse monitoring of the reservoir for microseismic depletion delineation.

公开(公告)号：US20230338934A1

公开(公告)日：2023-10-26

申请号：US18338224

申请日：2023-06-20

Applicant: CHEVRON U.S.A. INC.

Inventor： Adeola Florence OJO ,  Yihua ZHANG ,  Guan-Dao LEI ,  Howard S. LACHEEN

IPC: B01J29/80 ,  C10G45/64 ,  B01J37/04 ,  B01J29/74 ,  B01J37/03

CPC classification number: B01J29/80 ,  B01J29/74 ,  B01J29/7446 ,  B01J29/7461 ,  B01J37/031 ,  B01J37/04 ,  C10G45/64 ,  B01J2029/062

Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.

公开(公告)号：US20230332037A1

公开(公告)日：2023-10-19

申请号：US17920973

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH

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

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

Abstract: The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof such as in oil and gas operations. Methods of making polyanionic surfactants are also described.

公开(公告)号：US11787701B2

公开(公告)日：2023-10-17

申请号：US17382441

申请日：2021-07-22

Applicant: CHEVRON U.S.A. INC.

Inventor： Kandaswamy Jothimurugesan ,  Hye-Kyung Timken

IPC: C01F7/34 ,  B01J21/12 ,  B01J35/10 ,  B01J37/03 ,  B01J37/04

CPC classification number: C01F7/34 ,  B01J21/12 ,  B01J35/1019 ,  B01J35/1047 ,  B01J35/1061 ,  B01J37/031 ,  B01J37/04 ,  C01P2002/72 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16

Abstract: A process of making a silica-alumina composition having improved properties is provided. The process includes (a) mixing an aqueous solution of a silicon compound and an aqueous solution of an aluminum compound and an acid, while maintaining a pH of the mixed solution in a range of 1 to 3, and obtaining an acidified silica-alumina sol; (b) adding an aqueous solution of a base precipitating agent to the acidified silica-alumina sol to a final pH in a range of 5 to 8, and co-precipitating a silica-alumina slurry, wherein the base precipitating agent is selected from ammonium carbonate, ammonium bicarbonate, and any combination thereof; (c) optionally, hydrothermally aging the silica-alumina slurry to form a hydrothermally aged silica-alumina slurry; and (d) recovering a precipitate solid from the silica-alumina slurry or the hydrothermally aged silica-alumina slurry, wherein the precipitate solid comprises the silica-alumina composition.

公开(公告)号：US11781076B2

公开(公告)日：2023-10-10

申请号：US17683990

申请日：2022-03-01

Applicant: CHEVRON U.S.A. INC.

Inventor： Lin Li ,  Huping Luo ,  Xiaoying Ouyang ,  Alexander Kuperman

IPC: C10G50/00 ,  C10G47/34

CPC classification number: C10G50/00 ,  C10G47/34 ,  C10G2300/1025 ,  C10G2400/20 ,  C10G2400/22 ,  C10G2400/30

Abstract: The present disclosure refers to systems and methods for efficiently converting a C1-C3 alkane such as natural gas to a liquid C2-C10 product and hydrogen. Generally, the process comprises flowing the C1-C3 alkane through a plurality of tubes within a vessel wherein the tubes house a catalyst for converting the C1-C3 alkane to the liquid C2-C10 product and hydrogen. The C1-C3 alkane is heated under suitable conditions to produce the liquid C2-C10 product and hydrogen. Advantageously, the C1-C3 alkane is heated by burning a fuel outside the tubes in fuel burning nozzles configured to transfer heat from the burning through the tubes.

公开(公告)号：US20230312863A1

公开(公告)日：2023-10-05

申请号：US18128444

申请日：2023-03-30

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung C. TIMKEN ,  Tengfei LIU ,  Joel E. SCHMIDT ,  Kaustav CHAUDHURI

IPC: C08J11/20

CPC classification number: C08J11/20 ,  C08J2323/06 ,  C08J2323/12

Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. Then cooling the plastic melt and petroleum feedstock liquid blend with mixing to a temperature below the melting point of the plastic.

公开(公告)号：US11773675B2

公开(公告)日：2023-10-03

申请号：US16944542

申请日：2020-07-31

Applicant: Chevron U.S.A. Inc.

Inventor： James Daniel Montoya ,  Jonathon Crain Boudreaux ,  Patrick Rodriguez ,  Cole Thomas Brinkley

IPC: E21B25/08 ,  E21B25/00 ,  E21B49/08 ,  G01N33/24 ,  G01R33/12 ,  G01N1/08 ,  G01N1/28

CPC classification number: E21B25/08 ,  E21B25/005 ,  E21B49/088 ,  E21B49/0875 ,  G01N1/08 ,  G01N1/28 ,  G01N33/24 ,  G01R33/12

Abstract: A system for transferring at least one subterranean core sample under pressure can include a retrieval vessel that collects and houses the at least one subterranean core sample at a sampling pressure at which the at least one subterranean core is collected. The system can also include a linear actuator that couples to the retrieval vessel through a valve in the open position at a first time, where the linear actuator facilitates removal of at least one pressure barrier from the retrieval vessel through the valve at the first time while maintaining the sampling pressure of the at least one subterranean sample. The system can further include a testing vessel that couples to the linear actuator through the valve in the open position at a second time, and a hydraulic device that facilitates pressurizing the testing vessel to the sampling pressure at the second time.

公开(公告)号：US20230303399A1

公开(公告)日：2023-09-28

申请号：US17703067

申请日：2022-03-24

Applicant: CHEVRON U.S.A. INC.

Inventor： Dan XIE ,  Kurt Owen JENSEN ,  Adeola Florence OJO

IPC: C01B39/48 ,  B01J29/70

CPC classification number: C01B39/48 ,  B01J29/703 ,  C01P2002/72

Abstract: A method is provided for synthesizing *MRE molecular sieves using an organic structure directing agent which comprises a 1-ethylpyridinium cation.

公开(公告)号：US11754736B2

公开(公告)日：2023-09-12

申请号：US17232711

申请日：2021-04-16

Applicant: Chevron U.S.A. Inc.

Inventor： Justin Curtis Palmer ,  Lisa Renee Goggin ,  Adam Dean Halpert ,  Laura Leigh Bandura ,  Christopher H. Skelt

IPC: G01V1/30 ,  G01V1/28 ,  G01V1/34 ,  G06N5/01

CPC classification number: G01V1/306 ,  G01V1/282 ,  G01V1/345 ,  G06N5/01 ,  G01V2210/6161 ,  G01V2210/64 ,  G01V2210/665

Abstract: A computer-implemented method is described for seismic facies identification including receiving a seismic dataset representative of a subsurface volume of interest; applying a model conditioned by petrophysical classifications to the seismic dataset to identify seismic facies and generate a classified seismic image; and identifying geologic features based on the classified seismic image. The method generates seismic facies probability volumes.

公开(公告)号：US20230265350A1

公开(公告)日：2023-08-24

申请号：US18043738

申请日：2021-09-03

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Adeola OJO ,  Guan-Dao LEI

IPC: C10G45/64 ,  B01J37/00 ,  C10G45/62 ,  B01J29/70 ,  B01J29/068 ,  B01J29/072

CPC classification number: C10G45/64 ,  B01J37/0009 ,  C10G45/62 ,  B01J29/703 ,  B01J29/7023 ,  B01J29/068 ,  B01J29/072

Abstract: An improved process and catalyst system for making a base oil product and for reducing base oil aromatics content, while also providing good product yields. The process and catalyst system generally involves the use of a bimetallic SSZ-91 catalyst by contacting the catalyst with a hydrocarbon feedstock to provide dewaxed base oil products.