Patents Assigned to Chevron U.S.A. Inc.
  • Patent number: 12013507
    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).
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: June 18, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Zhao Zhang, Yijie Zhou, Sandra C. Saldana, David Bradly Christensen
  • Publication number: 20240191142
    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.
    Type: Application
    Filed: July 10, 2023
    Publication date: June 13, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Joel E. Schmidt, Tengfei Liu
  • Publication number: 20240191140
    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 100 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 in the range of from 550° F. to 700° F. The blend mixture is then hot filtered and then optionally treated with a chloride removal guard bed. The resulting blend can then be cooled and stored or sent directly to a refinery conversion unit.
    Type: Application
    Filed: July 10, 2023
    Publication date: June 13, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Joel E. Schmidt, Tengfei Liu
  • Publication number: 20240189801
    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.
    Type: Application
    Filed: June 29, 2023
    Publication date: June 13, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Xiaoying OUYANG, Viorel DUMA, Alexander KUPERMAN, Ibrahim UCKUNG, Theodorus Ludovicus Michael MAESEN, Axel BRAIT, Charles WILSON
  • Patent number: 12007518
    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.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: June 11, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Shane James Prochnow, Benjamin Rodolphe Cormier, Vahid Tohidi, Michelle Wan
  • Publication number: 20240173703
    Abstract: Bimetallic platinum-palladium hydrocracking catalysts are disclosed. The bimetallic catalyst generally comprises a base material comprising an alumina, an amorphous silica-alumina, and a Y zeolite, and a bimetallic platinum-palladium modifier metal composition dispersed on and/or impregnated within the base material. The catalyst is useful as a hydrocracking catalyst for hydrocarbon feedstocks, including as a second stage catalyst to produce fuels, and more particularly to produce higher yields of jet fuels.
    Type: Application
    Filed: March 21, 2022
    Publication date: May 30, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Trenton James OTTO, Bi-Zeng ZHAN
  • Publication number: 20240174525
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-94. Molecular sieve SSZ-94 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-94 is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventor: Adeola OJO
  • Publication number: 20240165596
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-93. Molecular sieve SSZ-93 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-93 is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 23, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Adeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
  • Patent number: 11987757
    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.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: May 21, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Kamala R. Krishna, Yihua Zhang, Guan-Dao Lei, Adeola Florence Ojo
  • Patent number: 11988092
    Abstract: A downhole drilling system is disclosed. The downhole drilling system may include a bottom-hole assembly having a pulse-generating circuit and a switching circuit within the pulse-generating circuit, the switching circuit comprising a solid-state switch. The downhole drilling system may also include a drill bit having a first electrode and a second electrode electrically coupled to the pulse-generating circuit to receive a pulse from the pulse-generating circuit.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: May 21, 2024
    Assignees: Halliburton Energy Services, Inc., Chevron U.S.A. Inc., SDG LLC
    Inventor: William M. Moeny
  • Publication number: 20240151141
    Abstract: A method is described to detect, analyze, and characterize fracture driven interaction (FDI) events in unconventional resources using production data from a well and its nearest neighbors. The method provides a rigorous statistical analysis of the production data of a well and its nearest neighbors, and utilizes a combination of signals including pressure, rate, water-oil ratio (WOR), and fluid production to identify and characterize FDI events. The method is executed by a computer system.
    Type: Application
    Filed: November 1, 2023
    Publication date: May 9, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Larry A. BOWDEN, Edgar DIAS
  • Publication number: 20240149250
    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 an alumina. The catalyst and process generally involve the use of a high nanopore volume ASA/alumina based catalyst to produce hydrotreated dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an amorphous silica alumina 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, 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.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 9, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Yihua ZHANG, Guan-Dao LEI
  • Patent number: 11976521
    Abstract: A centralizer for use in high speed rotor dynamics applications includes a housing having a first end portion and a second end portion. The centralizer further includes a rotatable shaft positioned within a cavity of the housing. The centralizer also includes flexure springs that are each attached to and extend between the first end portion and the second end portion. The flexure springs are compressible toward a middle portion of the housing that is between the first end portion and the second end portion. The centralizer further includes roller wheels attached to the flexure springs.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: May 7, 2024
    Assignee: Chevron U.S.A. Inc.
    Inventor: James Daniel Montoya
  • Patent number: 11976916
    Abstract: An optical strain gauge system measures strain on the exterior surface of a pipe to identify areas of wear on the interior surface of the pipe. The optical strain gauge system comprises an optical sensing interrogator and at least one optical fiber. The optical sensing interrogator comprises a light source and a light sensor. The at least one optical fiber includes fiber Bragg gratings along the length of the optical fiber. The optical fiber is arranged on the exterior surface of the pipe with the fiber Bragg gratings forming a two-dimensional array of points at which strain measurements are obtained. The two-dimensional array of strain measurement points provides an accurate assessment of the strains on the exterior of the pipe which can be used to identify areas of wear on the interior surface of the pipe.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: May 7, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Baha Tanju, Hariprasad Janakiram Subramani, Peter Crowder, Lee Rhyne, Nikolaos Ioannis Salmatanis, Pedro Vargas, Milind L. Prabhu
  • Patent number: 11964875
    Abstract: A method is provided for synthesizing *MRE molecular sieves using an organic structure directing agent which comprises a 1-ethylpyridinium cation.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 23, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Dan Xie, Kurt Owen Jensen, Adeola Florence Ojo
  • Patent number: 11964926
    Abstract: A process for producing high octane alkylate is provided. The process involves reacting isobutane and ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: April 23, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bong-Kyu Chang, Hye-Kyung Cho Timken, Huping Luo
  • Publication number: 20240123433
    Abstract: Provided is a process for hydrocracking normal paraffins into lighter normal paraffins with minimal formation of iso-paraffins. The process comprises hydrocracking a hydrocarbon feedstock comprising normal paraffins under hydrocracking conditions. The reaction is run in the presence of a selected catalyst, e.g., an LTA-type zeolite, with a requisite topology and acid site density. The zeolite has a framework type with voids greater than 0.50 nm in diameter, which are accessible through apertures characterized by a longest diameter of less than 0.50 nm and a shortest diameter of more than 0.30 nm. The reaction conducted in the presence of such a selected zeolite produces an n-paraffin rich product.
    Type: Application
    Filed: December 29, 2021
    Publication date: April 18, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Cong-Yan CHEN, Theodorus Ludovicus Michael MAESEN, Tracy Margaret DAVIS, Dan XIE
  • Patent number: 11959025
    Abstract: A continuous process for converting waste plastic into recycle for polypropylene polymerization is provided. The process integrates refinery operations to provide an effective and efficient recycle process. The process comprises selecting waste plastics containing polyethylene and polypropylene and then passing the waste plastics through a pyrolysis reactor to thermally crack at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into offgas, a naphtha/diesel fraction, a heavy fraction, and char. The naphtha/diesel fraction is passed to a refinery FCC unit, from which is recovered a liquid petroleum gas C3 olefin/paraffin mixture. The C3 paraffins and C3 olefins are separated into different fractions with a propane/propylene splitter. The C3 olefin fraction is passed to a propylene polymerization reactor.
    Type: Grant
    Filed: October 30, 2022
    Date of Patent: April 16, 2024
    Assignee: CHEVRON U.S.A INC.
    Inventor: Hye-Kyung Timken
  • Publication number: 20240117256
    Abstract: An improved process for making a heavy base oil from a base oil feedstream comprising an atmospheric resid feedstock, and, optionally, a base oil feedstock, via hydroprocessing. The process generally involves subjecting a base oil feedstream comprising the atmospheric resid to hydrocracking and dewaxing steps, and optionally to hydrofinishing, to produce base oil product(s) including a heavy grade base oil product having a viscosity of at least about 12.7 cSt at 100° C. The invention is useful to make heavy grade base oil products, as well as Group II and/or Group III/III+ base oils.
    Type: Application
    Filed: January 26, 2022
    Publication date: April 11, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Horacio TREVINO, Minghui ZHANG, Guan-Dao LEI, Luyen T. VO
  • Patent number: 11951458
    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.
    Type: Grant
    Filed: June 29, 2023
    Date of Patent: April 9, 2024
    Assignee: Chevron U.S.A. Inc.
    Inventors: Xiaoying Ouyang, Viorel Duma, Alexander Kuperman, Ibrahim Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait, Charles Wilson