公开(公告)号：US20240286892A1

公开(公告)日：2024-08-29

申请号：US18584975

申请日：2024-02-22

Applicant: CHEVRON U.S.A. INC.

Inventor： William BOORUJY ,  Karen DIDOMENICIS

IPC: C01B3/00 ,  F17C11/00

CPC classification number: C01B3/001 ,  F17C11/005 ,  F17C2221/012 ,  F17C2227/03

Abstract: Processes and systems are provided to enhance the rates of absorption and desorption of hydrogen into and out of a metal hydride composite material as part of a system for storing and/or compressing hydrogen. The rates of absorption and desorption are enhanced by techniques that enhance heat transfer between metal hydride composite material and a heat exchanger. Embodiments include the use of thermally conductive adhesive, grease or solder between the metal hydride composite material and heat exchanger element, snugly wrapping the metal hydride-heat exchanger element assembly with an expanded metal sheath or a flexible wire, and combinations thereof.

公开(公告)号：US12071833B2

公开(公告)日：2024-08-27

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 ,  E21B49/08 ,  E21B49/02

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：US20240271518A1

公开(公告)日：2024-08-15

申请号：US18169140

申请日：2023-02-14

Applicant: Chevron U.S.A. Inc.

Inventor： Daniel Concannon Segal ,  Kanwartej Singh Sra

IPC: E21B44/00 ,  E21B7/04

CPC classification number: E21B44/00 ,  E21B7/04

Abstract: The present disclosure relates generally to a robot, system, and method for subsurface drilling. The robot can include a drill bit, clamps, joint modules, and the robot can be directed manually or it can be directed by a predictive model.

公开(公告)号：US20240263084A1

公开(公告)日：2024-08-08

申请号：US18617309

申请日：2024-03-26

Applicant: Chevron U.S.A. Inc.

Inventor： Cong-Yan CHEN ,  Emmanuel BEHRAZ

IPC: C10G59/06 ,  B01D3/00 ,  B01J29/40

CPC classification number: C10G59/06 ,  B01D3/00 ,  B01J29/40 ,  C10G2300/1044 ,  C10G2300/308 ,  C10G2300/4018 ,  C10G2400/02

Abstract: An improved reforming process for producing aromatic hydrocarbons is disclosed. The process includes two reformers arranged in parallel flow configuration, with the first reformer being a conventional reformer comprising a catalyst selective for reforming C8+ hydrocarbons to a reformate and the second reformer comprising a catalyst selective for reforming C7− hydrocarbons to a reformate. In certain embodiments, the first reformer catalyst comprises a conventional alumina catalyst and the second reformer catalyst comprises a ZSM-5 catalyst.

公开(公告)号：US20240262700A1

公开(公告)日：2024-08-08

申请号：US18432264

申请日：2024-02-05

Applicant: Chevron U.S.A. Inc. ,  The Regents of the University of California

Inventor： Alexander KATZ ,  Le XU ,  Alexander OKRUT ,  Alexander KUPERMAN

IPC: C01B39/02 ,  B01J29/08 ,  B01J37/02 ,  B01J37/08

CPC classification number: C01B39/026 ,  B01J29/084 ,  B01J37/0215 ,  B01J37/0236 ,  B01J37/08 ,  B01J2229/12 ,  B01J2229/32 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2006/17

Abstract: A selective postsynthetic surface modification process of mesoporous Y zeolite (Meso-Y) is provided. The process results in a thin silica, alumina or aluminosilicate overlayer on the external surface without causing significant pore blockage, which otherwise results in the absence of surfactant. The approach relies on occluded CTAB surfactant in as-synthesized Meso-Y acting as a soft template, which protects internal microporosity and mesoporosity during inorganic overlayer synthesis, by directing its deposition to selectively occur on the external surface. The process is conducted under dry conditions.

公开(公告)号：US20240247549A1

公开(公告)日：2024-07-25

申请号：US18422714

申请日：2024-01-25

Applicant: Chevron U.S.A. Inc.

Inventor： Devanand Ramchune ,  David Charles Myerson ,  Thomas William Chase ,  William Penaloza ,  Joseph William Hughes ,  Matthew David Hays ,  Kevin Reid ,  Scott James Stamper ,  Afshin Babaie Aghdam ,  Aaron Schen

IPC: E21B10/62 ,  E21B47/07

CPC classification number: E21B10/62 ,  E21B47/07

Abstract: A temperature plug assembly includes a plug base having a first end, a second end opposite the first end, and an intermediate portion extending between the first end and the second end; and a temperature indicator disposed along the first end of the plug base.

公开(公告)号：US20240210584A1

公开(公告)日：2024-06-27

申请号：US18069865

申请日：2022-12-21

Applicant: Chevron U.S.A. Inc.

Inventor： Ke Wang ,  Jinsong Chen ,  Yijie Zhou

IPC: G01V1/30 ,  G01V1/28 ,  G01V1/34 ,  G06N3/091

CPC classification number: G01V1/30 ,  G01V1/282 ,  G01V1/345 ,  G06N3/091

Abstract: A method is described for seismic inversion with uncertainty quantification including performing low frequency Markov Chain Monte Carlo (MCMC) processes on rock physics models to generate low frequency models (LFMs) of rock properties and training a deep neural network using the low frequency models and synthetic seismograms to generate a trained neural network. Given a seismic dataset, the trained neural network can generate a high frequency rock property model and then broad-band MCMC processes can be performed on the high frequency rock property model for uncertainty quantification. The method is executed by a computer system.

公开(公告)号：US12013507B2

公开(公告)日：2024-06-18

申请号：US17556002

申请日：2021-12-20

Applicant: Chevron U.S.A. Inc.

Inventor： Zhao Zhang ,  Yijie Zhou ,  Sandra C. Saldana ,  David Bradly Christensen

IPC: G01V1/28 ,  G01V1/30

CPC classification number: G01V1/282 ,  G01V1/306 ,  G01V2210/614

Abstract: A neural network is utilized to improve the resolution of subsurface inversion. The neural network leverages posterior distribution of samples and adds high frequency components to the inversion by utilizing the data in both the time domain and the frequency domain. The improved resolution of the subsurface inversion enables more accurate prediction of subsurface characteristics (e.g., reservoir architecture).

公开(公告)号：US11987757B2

公开(公告)日：2024-05-21

申请号：US17138260

申请日：2020-12-30

Applicant: CHEVRON U.S.A. INC.

Inventor： Kamala R. Krishna ,  Yihua Zhang ,  Guan-Dao Lei ,  Adeola Florence Ojo

IPC: C10G11/05 ,  B01J29/70 ,  C10G3/00

CPC classification number: C10G11/05 ,  B01J29/703 ,  C10G3/44 ,  B01J2231/648 ,  C10G2300/1014 ,  C10G2400/04

Abstract: Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.

公开(公告)号：US20240151114A1

公开(公告)日：2024-05-09

申请号：US18500719

申请日：2023-11-02

Applicant: Chevron U.S.A. Inc.

Inventor： Jay Patrick Painter

IPC: E21B21/08 ,  E21B33/04

CPC classification number: E21B21/08 ,  E21B33/04

Abstract: A wellhead housing of a wellhead assembly can include a body having a top end, a bottom end, and a cavity that traverses its length between the top end and the bottom end. The wellhead housing can also include a main channel that traverses the body from the cavity at a distal end of the main channel to an outer perimeter of the body at a proximal end of the main channel, where the proximal end of the main channel is located closer to the top end of the body compared to the distal end of the main channel, and where the distal end of the main channel is located closer to the bottom end of the body compared to the proximal end of the main channel.