公开(公告)号：US11454733B2

公开(公告)日：2022-09-27

申请号：US16694870

申请日：2019-11-25

Applicant: CHEVRON U.S.A. INC.

Inventor： Tao Sun ,  Brian J. Willis ,  Maisha L. Amaru ,  Ashley D. Harris ,  Morgan David Sullivan

IPC: G01V1/30 ,  G01V1/00 ,  G01V1/34

Abstract: A method is described for analysis of subsurface data including the use of physics-based modeling and experimental design that allows calculation of probabilities of physical subsurface properties. The method may include calculations of key controlling parameters. The method may include using multiple dimension scaling. The method may be executed by a computer system.

公开(公告)号：US20220290559A1

公开(公告)日：2022-09-15

申请号：US17200677

申请日：2021-03-12

Applicant: Chevron U.S.A. Inc.

Inventor： Ivan Lim Chen Ning ,  Tamas Nemeth ,  David C. Bartel ,  Zhishuai Zhang ,  Yunhui Tan ,  Joseph P. Stefani ,  James P. DiSiena ,  Dimitri Bevc ,  Kelly Hughes

IPC: E21B47/135 ,  E21B47/107 ,  G06N3/04 ,  G06N20/00 ,  E21B49/00

Abstract: A method is described for predicting and preventing wellbore interactions at wells that are near the injection well. The method includes receiving fiber optics data; performing object detection by detecting object-like events in the fiber optic data; and sending instructions to a hydraulic fracturing system based on the object detection. The method is executed by a computer system.

公开(公告)号：US20220290031A1

公开(公告)日：2022-09-15

申请号：US17635222

申请日：2020-08-14

Applicant: Chevron U.S.A. Inc.

Inventor： Ruth Ellen HAHN ,  Varadarajan DWARAKANATH ,  Kerry SPILKER ,  Gregory A. WINSLOW ,  Sophany THACH ,  Gayani W. PINNAWALA ,  Christopher GRIFFITH ,  Harold Charles LINNEMEYER ,  Robert Neil TROTTER

IPC: C09K8/38 ,  C09K8/60 ,  C09K8/94 ,  C09K8/584

Abstract: Described herein are aqueous based foams for use in drilling operations. The foams can be used in below bubble point drilling operations to control the migration of reservoir gases (e.g., hydrogen sulfide) to the surface.

公开(公告)号：US20220288566A1

公开(公告)日：2022-09-15

申请号：US17199282

申请日：2021-03-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Yihua ZHANG ,  Guan-Dao LEI ,  Bi-Zeng ZHAN

IPC: B01J23/44 ,  B01J21/12 ,  B01J35/10 ,  C10M101/02 ,  C10M177/00 ,  C10G45/62

Abstract: An improved hydrotreating catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes a high nanopore volume amorphous silica alumina (ASA) and a second amorphous silica alumina. The catalyst and process generally involve the use of a base extrudate comprising the high nanopore volume ASA and the second ASA in a catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises a first amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.2 to 1.0 cc/g and a second amorphous silica alumina having a pore volume in the 11-20 nm pore diameter range of 0.02 to 0.2 cc/g, with the base extrudate formed from the amorphous silica alumina and the alumina having 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：US11441709B2

公开(公告)日：2022-09-13

申请号：US17153435

申请日：2021-01-20

Applicant: Chevron U.S.A. Inc.

Inventor： Albert E. Butterfield, IV ,  Christopher Robert Oliver ,  Anthony Colgan Mullek ,  Gregory Alexander Mullek

IPC: F16L23/036 ,  F16L17/04

Abstract: A restraint system configured to stabilize catalyst loading tubes. The restraint system includes a first restraint that has a first collar portion and a second collar portion. The restraint system further includes a first fastener configured to attach the first collar portion to a first tube segment and a second fastener configured to attach the second collar portion to the first tube segment. The restraint system also includes a first linkage having a first end and a second end, and a second linkage having a first end and a second end. The restraint system includes a second restraint having a third collar portion and a fourth collar portion. The restraint system further includes a third fastener and a fourth fastener. The first ends of the first and second linkage couple to the first restraint and the second ends of the first and second linkage couple to the second restraint.

公开(公告)号：US11434080B2

公开(公告)日：2022-09-06

申请号：US17120510

申请日：2020-12-14

Applicant: Chevron U.S.A. Inc.

Inventor： Albert E. Butterfield, IV

IPC: B65G7/12 ,  B66C1/34 ,  B66C1/62

Abstract: A tank cover lifting tool is configured to remove or attach tank covers. The tank cover lifting tool includes a handle center support, a first handle connected to one end of the handle center support, and a second handle connected to another end of the handle center support. In addition, the tank cover lifting tool includes a first lifting block that is locked on the handle center support and that is configured to engage a first tank cover handle of a tank cover. Further, the tank cover lifting tool includes a second lifting block that is locked on the handle center support and that is configured to engage a second tank cover handle of the tank cover.

公开(公告)号：US20220236700A1

公开(公告)日：2022-07-28

申请号：US17586858

申请日：2022-01-28

Applicant: CHEVRON U.S.A. INC.

Inventor： Cheng CHEN ,  Lauren A. FLORES ,  Martin Antonio MORLES

IPC: G05B13/04 ,  C02F1/00

Abstract: Embodiments of modelling a fluid treatment system are provided herein. One embodiment comprises obtaining synthetic data for a fluid treatment system from a data store. The fluid treatment system comprises a membrane and the fluid treatment system is configured to receive a stream of fluid for treatment. The embodiment further comprises training a performance indicator model using the synthetic data to predict a performance indicator for the fluid treatment system. The performance indicator comprises a permeate sulfate performance indicator and the performance indicator model predicts a sulfate content value in a permeate stream.

公开(公告)号：US20220219152A1

公开(公告)日：2022-07-14

申请号：US17147725

申请日：2021-01-13

Applicant: CHEVRON U.S.A. INC.

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

IPC: B01J29/76 ,  B01J35/02 ,  C10G45/64

Abstract: A hydroisomerization catalyst comprising a molecular sieve belonging to the ZSM-48 family of zeolites; an inorganic oxide support; one or more first modifiers selected from Groups 8 to 10; and one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd). The molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material present in the product; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total product. The molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.

公开(公告)号：US20220204875A1

公开(公告)日：2022-06-30

申请号：US17138039

申请日：2020-12-30

Applicant: Chevron U.S.A. Inc.

Inventor： Jay Parekh ,  Jifei Jia ,  Guan-Dao Lei ,  Kenny Peinado ,  Yihua Zhang ,  Shanying Lee

IPC: C10G67/02 ,  C10M101/02 ,  C10M177/00

Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.

公开(公告)号：US20220186586A1

公开(公告)日：2022-06-16

申请号：US17547846

申请日：2021-12-10

Applicant: Chevron U.S.A. Inc.

Inventor： Patrick James Zimmerman, SR. ,  Robert Sword Avent ,  Harold Gordon Riordan

IPC: E21B34/14 ,  E21B34/06

Abstract: An obstruction relief tool can include a plurality of walls that includes an inner wall, where the inner wall forms a cavity along a length of the inner wall. The obstruction relief tool can also include a chamber disposed between the plurality of walls, where the chamber has a proximal end and a distal end. The obstruction relief tool can further include an actuation device that is configured to actuate when an obstruction is within the cavity, where the actuation device, when actuated, is configured to open a first aperture in the inner wall that leads to the proximal end of the chamber, where the distal end of the chamber leads to a second aperture in the inner wall, where the first aperture is adjacent to the cavity above the obstruction, and where the second aperture in the inner wall is adjacent to the cavity below the obstruction.