公开(公告)号：US20230048572A1

公开(公告)日：2023-02-16

申请号：US17964754

申请日：2022-10-12

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung Timken

IPC: C10G1/10 ,  C07C4/04 ,  C10G45/58 ,  C08F10/02 ,  C10M177/00 ,  C10M105/04 ,  C10B53/07 ,  C10G1/00

Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. In one embodiment, the process comprises selecting waste plastics containing polyethylene and/or polypropylene and 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 crude unit distillation column in a refinery where a straight run naphtha (C5-C8) fraction or a propane/butane (C3-C4) fraction is recovered. The straight run naphtha fraction (C5-C8) or the propane/butane (C3-C4) fraction is passed to a steam cracker for ethylene production. The heavy fraction from the pyrolysis unit can also be passed to an isomerization dewaxing unit to produce a base oil.

公开(公告)号：US20230042577A1

公开(公告)日：2023-02-09

申请号：US17394808

申请日：2021-08-05

Applicant: CHEVRON U.S.A. INC.

Inventor： Weihong Fei ,  Chaoshun Hu ,  Paige Rene Given ,  Gilles Hennenfent ,  Cory Hoelting

IPC: E21B47/04 ,  G01V1/34 ,  G06N20/00

Abstract: Systems and methods for estimating reservoir productivity as a function of position in a subsurface volume of interest are disclosed. Exemplary implementations may: obtain an initial depth uncertainty model; obtain training depth uncertainty parameter values from the non-transient storage medium; obtain corresponding training depth uncertainty values; generate a trained depth uncertainty model by training the initial depth uncertainty model using the training depth uncertainty parameter values and the corresponding training depth uncertainty values; and store the trained depth uncertainty model.

公开(公告)号：US11571685B2

公开(公告)日：2023-02-07

申请号：US17023709

申请日：2020-09-17

Applicant: CHEVRON U.S.A. INC.

Inventor： Stacey Ian Zones ,  Jesus Pascual ,  Dan Xie ,  Cong-Yan Chen

IPC: C01B39/48 ,  B01J29/04 ,  B01J37/00 ,  B01J37/04 ,  B01J37/10 ,  C01B39/02 ,  C01B39/06 ,  C07C4/06 ,  C07D233/58 ,  B01J29/70

Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-116, is provided. SSZ-116 can be synthesized using 3-[(3,5-di-tert-butylphenyl)methyl]-1,2-dimethyl-1H-imidazolium cations as a structure directing agent. SSZ-116 may be used in organic compound conversion reactions and/or sorptive processes.

公开(公告)号：US11571654B2

公开(公告)日：2023-02-07

申请号：US17392354

申请日：2021-08-03

Applicant: CHEVRON U.S.A. INC.

Inventor： Joshua A. Thompson ,  Joel E. Schmidt

IPC: B01D53/047 ,  C07C7/13

Abstract: The present invention, and embodiments thereof, provide a process to separate ethylene products from impurities such as nitrogen, hydrogen, ethane, propane and isobutane without the need for distillation processes.

公开(公告)号：US20230022591A1

公开(公告)日：2023-01-26

申请号：US17384282

申请日：2021-07-23

Applicant: Chevron U.S.A. Inc.

Inventor： Thomas Gary Corbett ,  Donald Ray Lanceslin

IPC: E21B17/05 ,  E21B17/18 ,  E21B33/06

Abstract: The present application pertains to a swivel insertable into a casing ram. The swivel comprises an inner mandrel having an upper end section and a lower end section configured to be operably connectable and rotatable with an upper workstring section and a lower workstring section, the inner mandrel comprising a longitudinal passage forming a continuation of a passage in the workstring. An outer housing is configured to seal the inner mandrel inside the outer housing. The outer diameter of the outer housing and the length of the outer housing is configured to fit a casing ram. In contrast to prior art tools placed within annular blowout preventers which have limited differential pressure ranges, the instant device allows for differential pressure during operation as high as 10,000 psi or more. The instant devices also may allow for aggressive frac pack treatments and facilitate reverse out operations.

公开(公告)号：US11561315B2

公开(公告)日：2023-01-24

申请号：US17219680

申请日：2021-03-31

Applicant: CHEVRON U.S.A. INC.

Inventor： Alena Grechishnikova ,  Shane J. Prochnow

IPC: G01V1/50 ,  G01V1/30 ,  G06N20/00 ,  G01V1/28

Abstract: Systems and methods are disclosed for identifying and displaying geostructural properties as a function of lithology, horizons, and faults interpreted from well and seismic data. Exemplary implementations may include obtaining an initial fracture distribution grid model; obtaining training structural deformation data; obtaining training subsurface lithology parameter data; obtaining training fracture attribute data; and training the initial fracture distribution grid model to generate a trained fracture distribution grid model.

公开(公告)号：US20230001383A1

公开(公告)日：2023-01-05

申请号：US17774085

申请日：2020-11-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Ann LIANG ,  Trenton J. OTTO ,  Jifei JIA ,  Ling JIAO ,  Bao Q. LE ,  Kaustav CHAUDHURI ,  Bi-Zeng ZHAN

IPC: B01J21/12 ,  B01J29/10 ,  B01J35/10 ,  B01J35/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/00 ,  B01J37/08 ,  C10G47/18 ,  C10G45/12

Abstract: A silica-alumina based composite material for making hydroprocessing catalysts, is disclosed. The silica-alumina composite material generally comprises at least two silica-aluminas, the first being a modified first silica-alumina, and the second being a second silica-alumina that is unmodified or modified. The first silica-alumina is modified to comprise silica and alumina domains and a silica-alumina interphase. The second silica-alumina may also be modified at the same time or separately to comprise silica and alumina domains and a silica-alumina interphase. The first silica-alumina and the second silica-alumina differ in one or more physical and/or chemical characteristics, e.g., the ratio of silica to alumina, surface area, pore size, pore volume, silica domain size, or alumina domain size. The invention can be used for making catalyst base materials and catalysts useful for upgrading hydrocarbon feedstocks to produce fuels, lubricants, chemicals and other hydrocarbonaceous compositions.

公开(公告)号：US11536676B2

公开(公告)日：2022-12-27

申请号：US16948851

申请日：2020-10-02

Applicant: Triad National Security, LLC ,  Chevron U.S.A. Inc.

Inventor： Vamshi Krishna Chillara ,  Maruti Kumar Mudunuru ,  Hari Selvi Viswanathan ,  Satish Karra ,  Bulbul Ahmmed ,  Jeffrey Foering App ,  Gary Michael Hoversten

IPC: G01N27/02 ,  G01N33/28

Abstract: A multi-frequency signal may be used to induce voltage difference across a portion of a pipe. The voltage difference may be induced to take multi-frequency measurement of impedance characteristics of fluid inside the pipe. The multi-frequency measurement of the impedance characteristic of the fluid inside the pipe may be used to determine a characteristic of the fluid inside the pipe. This may be achieved by active integration of experimental data with high-resolution multi-frequency electrical impedance tomography (MFEIT) modeling.

公开(公告)号：US20220401931A1

公开(公告)日：2022-12-22

申请号：US17736169

申请日：2022-05-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Xiaoying OUYANG ,  Alexander E. KUPERMAN

IPC: B01J27/051 ,  C10G47/06 ,  B01J37/02 ,  B01J37/20

Abstract: Multi-metallic bulk catalysts and methods for synthesizing the same are provided. The multi-metallic bulk catalysts contain nickel, molybdenum tungsten, yttrium, and optionally, copper, titanium and/or niobium. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

公开(公告)号：US20220399085A1

公开(公告)日：2022-12-15

申请号：US17346463

申请日：2021-06-14

Applicant: Chevron U.S.A. Inc.

Inventor： Larry A. Bowden, Jr. ,  Dan Xie ,  Christopher Michael Lew ,  Joel Edward Schmidt

IPC: G16C20/70 ,  G16C20/10 ,  G16C20/40 ,  G16C20/50 ,  G16C60/00

Abstract: A computer implemented method for designing chemical reactions for catalyst construction is described. The method includes extracting historical data including historic chemical reaction data and historic catalyst construction yield data and converting the historic chemical reaction data into graph models to represent molecular structure data. The method also includes incorporating the graph models into a chemical reaction algorithm and training a vectorized cognitive deep learning network of the chemical reaction algorithm by using the graph models and a property of the historic chemical reaction data to produce a catalyst chemical reaction model. Further, the method includes validating the catalyst chemical reaction model by inputting the historic chemical reaction data and comparing a generated property corresponding to the catalyst chemical reaction model to the property of the historic chemical reaction data. Lastly, the method includes updating the training of the catalyst chemical reaction model.