公开(公告)号：US20240239726A1

公开(公告)日：2024-07-18

申请号：US18576716

申请日：2022-05-16

Applicant: CHEVRON U.S.A. INC.

Inventor： Sven Ivar HOMMELTOFT

IPC: C07C2/34 ,  C07C11/06

CPC classification number: C07C2/34 ,  C07C11/06 ,  C07C2531/14 ,  C07C2531/22

Abstract: A method for making a propylene oligomer having a high vinylidene content and a high degree of structural regularity and the propylene oligomer made therefrom. The method of making the propylene oligomer comprises contacting an unbridged metallocene complex with a propylene composition in the presence of a modified methyl aluminum oxide activator compound under suitable oligomerization conditions. The use of the combination of a modified methyl aluminum oxide activator compound with an unbridged metallocene complex has been found to provide increased vinylidene group content and reduced hydrogenated propylene oligomer content.

公开(公告)号：US20240229589A9

公开(公告)日：2024-07-11

申请号：US17971319

申请日：2022-10-21

Applicant: Chevron U.S.A. Inc

Inventor： Jay Patrick Painter ,  Kevin Frank Leo Hejl

IPC: E21B33/04 ,  E21B33/072

CPC classification number: E21B33/04 ,  E21B33/072

Abstract: A tubing spool of a wellhead assembly can include a body having a body cavity, a first channel, and a second channel disposed therein, where the body cavity is configured to receive a tubing hanger used to couple to and suspend a tubing string, where the first channel is configured to be in communication with a tubing string cavity within the tubing string, where the second channel is configured to be in communication with an annulus located between the tubing string and a production casing, and where the first channel and the second channel are each configured to facilitate flow of at least one of a plurality of fluids in either direction independently of each other. The tubing spool can also include a first back pressure valve disposed within the first channel and a second back pressure valve disposed within the second channel.

公开(公告)号：US12030842B2

公开(公告)日：2024-07-09

申请号：US17798450

申请日：2021-02-11

Applicant: CHEVRON ORONITE COMPANY LLC ,  CHEVRON U.S.A. INC.

Inventor： Andrew R. Gibbs ,  Sven Ivar Hommeltoft

IPC: C07C39/06 ,  C10M129/10 ,  C10N20/00

CPC classification number: C07C39/06 ,  C10M129/10 ,  C10M2205/0245 ,  C10M2207/024 ,  C10N2020/071

Abstract: The present disclosure provides a hydroxyaromatic product. The alkyl hydroxyaromatic compound having a structure given by




where R is a hydroxyaromatic group, X is hydrogen or methyl group and where n is 1 or greater.

公开(公告)号：US12026185B2

公开(公告)日：2024-07-02

申请号：US17188774

申请日：2021-03-01

Applicant: Chevron U.S.A. Inc.

Inventor： Mohamed Ibrahim Mohamed ,  Larry A. Bowden, Jr. ,  Xin Feng

IPC: G06F16/332 ,  G06N5/02 ,  G06N20/00

CPC classification number: G06F16/3326 ,  G06N5/02 ,  G06N20/00

Abstract: Keywords obtained from a user and/or extracted from uploaded document(s) may be used to generate potential keywords. Documents may be identified based on the keywords and the potential keywords accepted by the user. A knowledge graph model representing the identified documents may be generated. The knowledge graph model may include document nodes representing the identified document and a search node representing the keywords. The relative position of the document nodes with respect to the search node may represent similarity between the corresponding documents and the keywords.

公开(公告)号：US12011710B1

公开(公告)日：2024-06-18

申请号：US18344380

申请日：2023-06-29

Applicant: Chevron U.S.A. Inc.

Inventor： Xiaoying Ouyang ,  Viorel Duma ,  Alexander Kuperman ,  Ibrahim Uckung ,  Theodorus Ludovicus Michael Maesen ,  Axel Brait ,  Charles Wilson

IPC: B01J37/20 ,  B01J23/89 ,  B01J35/31 ,  B01J35/61 ,  B01J35/63 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  C07C5/10 ,  C10G45/00 ,  C10G47/00 ,  C10G49/00

CPC classification number: B01J23/8993 ,  B01J35/31 ,  B01J35/615 ,  B01J35/633 ,  B01J37/0045 ,  B01J37/031 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  C07C5/10 ,  C10G45/00 ,  C10G47/00 ,  C10G49/00 ,  C10G2300/1055 ,  C10G2300/1074 ,  C10G2300/4006 ,  C10G2300/4012 ,  C10G2300/4018 ,  C10G2300/42 ,  C10G2300/70

Abstract: Bulk catalysts comprised of nickel, molybdenum, tungsten and titanium and methods for synthesizing bulk catalysts are provided. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

公开(公告)号：US20240192393A1

公开(公告)日：2024-06-13

申请号：US18532849

申请日：2023-12-07

Applicant: CHEVRON U.S.A. INC.

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

IPC: G01V1/36 ,  G01V1/30

CPC classification number: G01V1/362 ,  G01V1/307 ,  G01V1/226

Abstract: 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：US20240191142A1

公开(公告)日：2024-06-13

申请号：US18349333

申请日：2023-07-10

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung C. Timken ,  Joel E. Schmidt ,  Tengfei Liu

IPC: C10G1/10 ,  C10G1/00

CPC classification number: C10G1/10 ,  C10G1/002 ,  C10G2300/1003 ,  C10G2300/1092 ,  C10G2300/201 ,  C10G2300/4006

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, and less than 10 ppm chloride. 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. The blend mixture is then hot filtered with the resulting filtered blend mixture being heated to at least 500° F. The heated mixture can then be treated with a chloride removal guard bed. The resulting blend can then be cooled and stored or sent directly to a refinery conversion unit.

公开(公告)号：US12007518B2

公开(公告)日：2024-06-11

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: G01V20/00 ,  G01V11/00 ,  G06N20/20

CPC classification number: G01V20/00 ,  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.

公开(公告)号：US20240182781A1

公开(公告)日：2024-06-06

申请号：US18439282

申请日：2024-02-12

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Varadarajan DWARAKANATH ,  Mohamad SALMAN ,  Mohsen S. TAGAVIFAR

IPC: C09K8/86 ,  C10G33/04

CPC classification number: C09K8/86 ,  C10G33/04 ,  C09K2208/26

Abstract: Disclosed herein are methods and composition for breaking foam, emulsions, or any combination thereof.

公开(公告)号：US20240174522A1

公开(公告)日：2024-05-30

申请号：US18510320

申请日：2023-11-15

Applicant: CHEVRON U.S.A. INC.

Inventor： Dan XIE

IPC: C01B39/24 ,  C01B39/20

CPC classification number: C01B39/24 ,  C01B39/205

Abstract: A method for synthesizing an aluminosilicate molecular sieve of SWY framework topology via interzeolitic conversion is described. The method includes (1) a step of preparing a reaction mixture containing an aluminosilicate zeolite of FAU framework topology, a structure directing agent comprising a 1-methyl-1-[7-(trimethylammonio)heptyl]piperidinium cation, a source of an alkali metal cation, a source of hydroxide ions, and water; and (2) a step of heating the reaction mixture to obtain an aluminosilicate molecular sieve of SWY framework topology.