公开(公告)号：US12091922B2

公开(公告)日：2024-09-17

申请号：US17631832

申请日：2020-07-30

Applicant: Chevron U.S.A. Inc.

Inventor： James Daniel Montoya ,  Jose Alberto Gamboa ,  Matthew John Bower

IPC: E21B17/10

CPC classification number: E21B17/1021 ,  E21B17/1028 ,  E21B17/1057

Abstract: An artificial lift system utilizing a downhole impeller-style pump and a motor at the surface. The system includes a centralizer for use with the rod string or tubing. The centralizer centralizes a rotating rod at intermediate points within the tubing string. The centralizer includes a plurality of flexure springs and bearings. A rod string tensioner induces a tension load on the rod string.

公开(公告)号：US12090468B2

公开(公告)日：2024-09-17

申请号：US17199262

申请日：2021-03-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua Zhang ,  Guan-Dao Lei

IPC: B01J23/44 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J35/63 ,  B01J35/64 ,  C10G45/52

CPC classification number: B01J23/44 ,  B01J21/04 ,  B01J21/12 ,  B01J23/42 ,  B01J35/633 ,  B01J35/647 ,  C10G45/52 ,  C10G2300/1096 ,  C10G2300/70

Abstract: An improved hydrotreating catalyst and process for making a base oil product. The catalyst comprises a base extrudate of a high nanopore volume amorphous silica alumina (ASA) and alumina. The catalyst and process use a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products from a hydrocarbon feedstock. The base extrudate comprises ASA having a pore volume in the 11-20 nm pore diameter range of 0.2 to 0.9 cc/g and an alumina having a pore volume in the 11-20 nm pore diameter range of 0.01 to 1.0 cc/g. The base extrudate formed has a total pore volume in the 2-50 nm pore diameter range of 0.12 to 1.80 cc/g. The catalyst further comprises at least one modifier element from Groups 6 to 10 and Group 14 of the Periodic Table. The catalyst and process provide improved aromatics saturation.

公开(公告)号：US20240287891A1

公开(公告)日：2024-08-29

申请号：US18567322

申请日：2023-01-25

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas Thai Binh Tran ,  Cole Ellis Palmer ,  Alireza Zahedi

IPC: E21B47/06

CPC classification number: E21B47/06 ,  E21B2200/20

Abstract: A method for identifying shut-ins of a well may include obtaining raw pressure values captured over a period of time, where each of the raw pressure values indicates a pressure at a bottom hole of the well; applying filters to the raw pressure values to generate a plurality of filtered pressure values; identifying initial sequences having monotonically trending values among the plurality of filtered pressure values; splicing adjacent initial sequences; adjusting the start point of at least one of the initial sequences based on derivatives of the filtered pressure values; applying a parametric function to the initial sequences to generate fitted sequences; and applying a pattern recognition to the fitted sequences to generate final sequences.

公开(公告)号：US20240271032A1

公开(公告)日：2024-08-15

申请号：US18464691

申请日：2023-09-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Dustin L. WALKER ,  Gayani W. PINNAWALA ,  Nabijan NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Dustin J. LOWRY ,  Tetsuo Art INOUYE ,  Taimur MALIK

IPC: C09K8/60 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11

CPC classification number: C09K8/604 ,  C09K8/602 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/86 ,  E21B43/267 ,  E21B43/27 ,  E21B47/11 ,  C09K2208/10 ,  C09K2208/12 ,  C09K2208/26 ,  C09K2208/28 ,  C09K2208/32

Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.

公开(公告)号：US20240270585A1

公开(公告)日：2024-08-15

申请号：US18165387

申请日：2023-02-07

Applicant: CHEVRON U.S.A INC.

Inventor： Christopher Michael LEW ,  Rishabh JAIN ,  Cong-Yan CHEN

IPC: C01B39/08 ,  B01J29/70

CPC classification number: C01B39/087 ,  B01J29/7034 ,  C01P2004/62

Abstract: This disclosure relates to a ferrosilicate molecular sieve of MTW framework topology, its synthesis and use. Ferrosilicate MTW may be directly prepared using 1,3-diisobutylimidazolium cations as a structure directing agent. Ferrosilicate MTW may be used in organic compounds conversion and absorptive processes.

公开(公告)号：US20240255669A1

公开(公告)日：2024-08-01

申请号：US18414853

申请日：2024-01-17

Applicant: CHEVRON U.S.A. INC.

Inventor： Ivan LIM CHEN NING ,  Michael Eric CRAVEN ,  Saptarshi DASGUPTA ,  Timothy John TOKAR

IPC: G01V1/50

CPC classification number: G01V1/50 ,  G01V2210/121

Abstract: A method is described for determining well integrity including deploying seismic sensors in a wellbore; attaching a vibrational source to well hardware; using the vibrational source to generate seismic signal that moves through the wellbore; creating a seismic dataset by recording the seismic signal at the seismic sensors; and processing the seismic dataset to make a processed seismic image. The processed seismic image may be displayed on a graphical display in order to identify well integrity problems such as wellbore deformation, well casing damage, or problems with cement.

公开(公告)号：US12049809B2

公开(公告)日：2024-07-30

申请号：US18135846

申请日：2023-04-18

Applicant: Chevron U.S.A. Inc.

Inventor： Matthew Scott Bolen ,  Andrew Thomas Ruhl ,  Seung Jin Han ,  Kristen Anne Belcourt ,  Amos Sunghyun Kim ,  Nicholas Andrew Zerante ,  Ross Gerard Cazenave ,  Jay Patrick Painter

IPC: E21B43/26 ,  F16L41/03

CPC classification number: E21B43/2607 ,  E21B43/26 ,  F16L41/03

Abstract: A missile for a hydraulic fracturing system can include a high-pressure (HP) manifold, a low-pressure (LP) manifold, and a main manifold in between. The missile is configured to simultaneously fracture three or more wells. The HP manifold has multiple input channels, an output channel, and a main channel disposed in between. The LP manifold includes a LP input channel, multiple LP output channels, and a LP manifold in between.

公开(公告)号：US12044090B2

公开(公告)日：2024-07-23

申请号：US17895859

申请日：2022-08-25

Applicant: Chevron U.S.A. Inc.

Inventor： Jay Patrick Painter

IPC: E21B33/04

CPC classification number: E21B33/04

Abstract: A sleeve for protecting a lockdown screw of a wellhead assembly can include a body having an inner surface and an outer surface, wherein the body has a concave curvature, where the body is configured to be disposed within an upper portion of a recess of a component of the wellhead assembly inside of which the lockdown screw is disposed, where the concave curvature of the body is configured to match that of an inner wall of the component, and where the outer surface is configured to isolate the lockdown screw from an environment in a cavity partially formed by the inner surface when the body is disposed in the upper portion of the recess.

公开(公告)号：US12037542B2

公开(公告)日：2024-07-16

申请号：US17669043

申请日：2022-02-10

Applicant: CHEVRON U.S.A. INC.

Inventor： Robert George Shong ,  Varadarajab Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

IPC: C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

CPC classification number: C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

Abstract: The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. Embodiments relate to an aqueous stream and the use thereof. The aqueous stream includes a compound having the chemical formula: R1—R2—R3, wherein R1 includes a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having an oxygen atom linking R1 and R2; R2 includes an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 includes a branched or unbranched hydrocarbon chain and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. R3 includes 2-12 carbon atoms.

公开(公告)号：US20240192389A1

公开(公告)日：2024-06-13

申请号：US18159512

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 ,  G01V1/34

CPC classification number: G01V1/282 ,  G01V1/345 ,  G01V2210/6242 ,  G01V2210/6244 ,  G01V2210/673 ,  G01V2210/74

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.