公开(公告)号：US20210373198A1

公开(公告)日：2021-12-02

申请号：US15929985

申请日：2020-06-01

Applicant: Chevron U.S.A. Inc.

Inventor： Friedemann Ulrich Maximilian Baur ,  Gregory Ian Ball ,  Chao Zhao ,  Barry Jay Katz ,  Brian S. Cabote

IPC: G01V99/00

Abstract: Changes to interpreted horizons in a subsurface representation are propagated to synthetic horizons in the subsurface representation by maintaining relative distances between the synthetic horizons and interpreted horizons. Distance ratios of synthetic horizons between interpreted horizons are applied to changed interpreted horizons to derive new locations of synthetic horizons.

公开(公告)号：US11187826B2

公开(公告)日：2021-11-30

申请号：US16706579

申请日：2019-12-06

Applicant: Chevron U.S.A. Inc.

Inventor： Fabien J. Laugier ,  Alicia Downard ,  Tao Sun

IPC: G01V99/00

Abstract: Unsegmented continuous subsurface data may be analyzed using one or more moving windows to characterize a subsurface region. Unsegmented continuous subsurface data may be scanned using the moving window(s). Probabilities that portions of the subsurface region include a subsurface feature may be determined based on analysis of the portions of the unsegmented continuous subsurface data within the moving window(s).

公开(公告)号：US11180376B1

公开(公告)日：2021-11-23

申请号：US17206329

申请日：2021-03-19

Applicant: CHEVRON U.S.A. INC.

Inventor： Joel Edward Schmidt

IPC: C01B39/44

Abstract: A zeolite having the ferrierite framework structure is produced using one or more of n-propylamine, n-butylamine, isobutylamine, and n-amylamine as a structure directing agent.

公开(公告)号：US11174437B2

公开(公告)日：2021-11-16

申请号：US17131877

申请日：2020-12-23

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung Timken

IPC: C10B53/07 ,  C10G31/06 ,  C10G35/02 ,  C10G51/02 ,  C10G57/02

Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. 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. Pyrolysis oil and wax, comprising the naphtha/diesel fraction and heavy fraction, is sent to a refinery FCC unit. A liquid petroleum gas C3-C5 olefin/paraffin mixture is recovered from the FCC unit and passed to a refinery alkylation unit. A propane fraction is recovered from the alkylation unit and passed to a dehydrogenation unit to produce propylene. The propylene is passed to a propylene polymerization reactor.

公开(公告)号：US11174436B2

公开(公告)日：2021-11-16

申请号：US17131832

申请日：2020-12-23

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung Timken

IPC: C10B53/07 ,  C10G31/06 ,  C10G35/02 ,  C10G51/02 ,  C10G57/02 ,  C10G9/36

Abstract: Provided is a continuous process for converting waste plastic into a feedstock for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or 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 then separated into offgas, a pyrolysis oil comprising a naphtha/diesel/heavy fraction, and char. The pyrolysis oil is passed to a crude unit in a refinery from which a naphtha fraction (C5-C8), or a propane and butane (C3-C4) fraction, is recovered. The naphtha fraction, or propane and butane (C3-C4) fraction, is then passed to a steam cracker for ethylene production.

公开(公告)号：US11167996B1

公开(公告)日：2021-11-09

申请号：US17323034

申请日：2021-05-18

Applicant: Chevron U.S.A. Inc.

Inventor： Joel Edward Schmidt ,  Cong-Yan Chen

IPC: C01B39/48 ,  B01J29/70 ,  B01J29/74 ,  B01J37/00 ,  B01J37/04 ,  B01J37/10 ,  C07C1/22 ,  C07C5/22 ,  B01J37/30

Abstract: A method is provided for synthesizing molecular sieves of SZR framework type using 1,2,3-trimethylimidazolium cations as a structure directing agent and alumina-coated silica as a combined source of silicon and aluminum.

公开(公告)号：US11163094B2

公开(公告)日：2021-11-02

申请号：US16115391

申请日：2018-08-28

Applicant: CHEVRON U.S.A. INC.

Inventor： Miles Ashley Frazer ,  Kaveh Ghayour

IPC: G01V99/00 ,  G01N15/08 ,  G01N33/24

Abstract: Exemplary implementations may: obtain, from the electronic storage, geological data corresponding to the geographic volume of interest; generate a framework for sediment deposition using a first set of multiple physical, chemical, biological, and geological processes; generate a framework for diagenesis using a second set of multiple physical, chemical, biological, and geological processes; generate a representation of sediment deposition by applying the geological data corresponding to the geographic volume of interest to the framework for sediment deposition; generate a representation of diagenesis based on the framework for diagenesis and the representation of sediment deposition; and display the representation of sediment deposition and the representation of diagenesis on a graphical user interface.

公开(公告)号：US11156742B2

公开(公告)日：2021-10-26

申请号：US15762096

申请日：2016-10-06

Applicant: Schlumberger Technology Corporation ,  Chevron U.S.A. Inc. ,  Total SA

Inventor： Kyrre Bratvedt ,  Alexander Lukyanov ,  Hadi Hajibeygi ,  Kees Vuik

IPC: G01V99/00 ,  G06F30/23 ,  E21B49/00 ,  G06F17/18 ,  G06F111/10

Abstract: Systems, computer-readable media, and methods are described for performing a reservoir simulation by obtaining reservoir data, obtaining simulation parameters, determining partial differential equations based on the simulation parameters, and performing a timestep of the reservoir simulation based on the reservoir data and the partial differential equations by removing an effect of long coherent structures with high contrasts, such as fractures, faults, high and low permeability channels, or shale layers, from the partial differential equations to generate adapted partial differential equations, and performing an algebraic multiscale method on the adapted partial differential equations to generate an approximated solution. The approximated solution can be used in a subsequent timestep of the reservoir simulation.

公开(公告)号：US20210318259A1

公开(公告)日：2021-10-14

申请号：US16999242

申请日：2020-08-21

Applicant: CHEVRON U.S.A. INC.

Inventor： Martha Rebecca STOKES ,  Zheng YANG ,  Prince E. EZEBUIRO ,  Timothy B. FISCHER

IPC: G01N27/22 ,  G01N33/24 ,  E21B49/00

Abstract: Provided herein are various embodiments of determining a cation exchange capacity of a rock sample. One embodiment of a method of determining a cation exchange capacity of a rock sample comprises equilibrating the rock sample to a relative humidity, performing a dielectric permittivity measurement on the rock sample at the relative humidity, and determining a cation exchange capacity of the rock sample based on the dielectric permittivity measurement. One embodiment of a method of determining a cation exchange capacity of a rock sample comprises receiving a dielectric permittivity measurement on the rock sample, and determining a cation exchange capacity for the rock sample based on the dielectric permittivity measurement of the rock sample and a relationship between cation exchange capacity and dielectric permittivity measurements for mineral mixtures corresponding to a range of cation exchange capacity values.

公开(公告)号：US11135575B2

公开(公告)日：2021-10-05

申请号：US15928690

申请日：2018-03-22

Applicant: Chevron U.S.A. Inc.

Inventor： Michael John Girgis ,  Huping Luo ,  Bong Kyu Chang ,  Hye-Kyung Cho Timken ,  Steven Xugi Song ,  Michael Sean Driver

IPC: C07C2/58 ,  B01J31/40 ,  B01J31/02 ,  B01J38/10 ,  C07C2/62 ,  C10L1/06 ,  C10G29/20 ,  C10G45/60 ,  C10G47/02 ,  C10G50/00 ,  B01J35/12 ,  C07C2/56

Abstract: We provide a process for regenerating a spent acidic ionic liquid, comprising contacting the spent acidic ionic liquid with hydrogen and without an addition of a hydrogenation catalyst; wherein a conjunct polymer content is decreased in the spent acidic ionic liquid to produce regenerated acidic ionic liquid. We also provide a process for making an alkylate gasoline blending component, comprising: a) alkylating a mixture of isoparaffins and olefins using an acidic ionic liquid and an alkyl halide or a hydrogen halide, wherein a conjunct polymer accumulates in a spent acidic ionic liquid; and b) feeding the spent acidic ionic liquid and a hydrogen, and without an addition of a hydrogenation catalyst, to a regeneration reactor operated under selected hydrogenation conditions to produce a regenerated acidic ionic liquid that is used for the alkylating, wherein the conjunct polymer in the regenerated acidic ionic liquid is decreased by at least 50 wt %.