公开(公告)号：US20240303399A1

公开(公告)日：2024-09-12

申请号：US18546132

申请日：2022-02-11

Applicant: CHEVRON U.S.A. INC.

Inventor： Mustafa Can Kara

IPC: G06F30/27

CPC classification number: G06F30/27

Abstract: An unsupervised machine-learning model is trained using historical operation characteristics of a well. Operation characteristics of the well for a duration of time is reconstructed by the unsupervised machine-learning model. Whether a sanding event will occur in the future at the well is predicted based on the difference between the operation characteristics of the well and the reconstructed operation characteristics of the well.

公开(公告)号：US20240301300A1

公开(公告)日：2024-09-12

申请号：US18261998

申请日：2022-01-17

Applicant: CHEVRON U.S.A. INC.

Inventor： Viorel DUMA ,  Subhasis BHATTACHARYA ,  Guan-Dao LEI

IPC: C10G65/12 ,  C10G47/18 ,  C10G47/20

CPC classification number: C10G65/12 ,  C10G47/18 ,  C10G47/20 ,  C10G2300/1059 ,  C10G2300/202 ,  C10G2300/205 ,  C10G2300/301 ,  C10G2300/302

Abstract: A method of producing a base oil product by hydroprocessing unconverted oil from a hydrocracker in an unconverted oil upgrade reactor to produce upgraded unconverted oil and dewaxing the upgraded unconverted oil to produce the base oil product.

公开(公告)号：US20240300809A1

公开(公告)日：2024-09-12

申请号：US18591526

申请日：2024-02-29

Applicant: CHEVRON U.S.A. INC.

Inventor： Kevin Jakubenas ,  Allen M. Toweill

IPC: C01B3/00

CPC classification number: C01B3/0015 ,  C01B2203/0805 ,  C01B2203/1619 ,  C01B2203/169

Abstract: The invention relates generally to system for conserving heat during the hydrogenation and dehydrogenation process by using a multi-component system.

公开(公告)号：US20240299918A1

公开(公告)日：2024-09-12

申请号：US18261481

申请日：2022-01-13

Applicant: CHEVRON U.S.A. Inc.

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

IPC: B01J29/76 ,  B01J35/50 ,  C10G45/64

CPC classification number: B01J29/7661 ,  B01J35/50 ,  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：US20240279554A1

公开(公告)日：2024-08-22

申请号：US18411295

申请日：2024-01-12

Applicant: Chevron U.S.A. Inc.

Inventor： WILLIAM BOORUJY ,  CESAR OVALLES

IPC: C10G2/00 ,  B01D53/62 ,  B01D53/73 ,  C01B3/24

CPC classification number: C10G2/50 ,  B01D53/62 ,  B01D53/73 ,  C01B3/24 ,  B01D2257/504 ,  B01D2258/0283 ,  B01D2258/06 ,  C01B2203/0272 ,  C01B2203/0277 ,  C01B2203/062 ,  C01B2203/1241 ,  C01B2203/80 ,  C10G2300/4043 ,  C10G2300/4081 ,  C10G2300/42 ,  C10G2400/02 ,  C10G2400/04 ,  C10G2400/08

Abstract: A process is provided that includes pyrolyzing methane to form a stream of hydrogen and solid carbon and co-feeding a CO2-containing stream and the stream of hydrogen to a fuel synthesis unit in which the CO2 of the CO2-containing stream and the hydrogen of the stream of hydrogen are converted to a low-carbon intensity fuel. Also provided is a system comprising a pyrolizer for pyrolyzing methane having a methane inlet, an outlet for a stream of hydrogen, and an outlet for solid carbon. The system also comprises a fuel synthesis unit capable of receiving the stream of hydrogen and a CO2-containing stream in which the CO2 of the CO2-containing stream and the hydrogen of the stream of hydrogen are converted to a low-carbon intensity fuel.

公开(公告)号：US20240269718A1

公开(公告)日：2024-08-15

申请号：US18166886

申请日：2023-02-09

Applicant: Chevron U.S.A. Inc.

Inventor： Janelle Lee Lewis ,  Adam James Dassey

IPC: B08B7/00 ,  B08B5/04 ,  B08B7/04 ,  B08B9/043 ,  B08B13/00

CPC classification number: B08B7/0042 ,  B08B5/04 ,  B08B7/04 ,  B08B9/043 ,  B08B13/00 ,  B08B2209/04

Abstract: The present embodiments provide systems for cleaning NORM scale or other contaminants off of one or more objects via a laser. The laser can be moved through a pipe or around one more containers. This avoids the use of water to remove NORM, thus the present systems are more environmentally friendly than conventional cleaning systems.

公开(公告)号：US20240254382A1

公开(公告)日：2024-08-01

申请号：US18437955

申请日：2024-02-09

Applicant: CHEVRON U.S.A. INC.

Inventor： Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik ,  Logan Jackson ,  Tom Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla

IPC: C09K8/588 ,  C09K8/584 ,  E21B43/20

CPC classification number: C09K8/588 ,  C09K8/584 ,  E21B43/20

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US20240247180A1

公开(公告)日：2024-07-25

申请号：US18437915

申请日：2024-02-09

Applicant: CHEVRON U.S.A. INC.

Inventor： Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik ,  Logan Jackson ,  Tom Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla

IPC: C09K8/588 ,  C09K8/584 ,  E21B43/20

CPC classification number: C09K8/588 ,  C09K8/584 ,  E21B43/20

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US12043793B2

公开(公告)日：2024-07-23

申请号：US17826275

申请日：2022-05-27

Applicant: Chevron U.S.A. Inc.

Inventor： Caleb Kimbrell Carroll ,  Deryck Edward Matthew Williams

IPC: C09K8/46 ,  C04B7/36 ,  C09K8/42

CPC classification number: C09K8/46 ,  C04B7/367 ,  C09K8/426

Abstract: A method of making a cement composite can include contacting an aqueous solution comprising calcium ions with a carbon dioxide source producing a carbonated aqueous solution. Fine particles can be submerged in the carbonated aqueous solution to produce microaggregate particles comprising the fine particles coated with calcium carbonate. The microaggregate particles can be combined with cement particles to produce the cement composite. The cement composite can be used in cementing applications for hydrocarbon wells including for casing liners and well plugs.

公开(公告)号：US20240241278A1

公开(公告)日：2024-07-18

申请号：US18156229

申请日：2023-01-18

Applicant: Chevron U.S.A. Inc.

Inventor： Yijie Zhou

IPC: G01V1/34 ,  G01V1/28

CPC classification number: G01V1/34 ,  G01V1/282

Abstract: A method is described for reservoir structure characterization including obtaining well logs and seismic data; performing facies classification and stratigraphic sequencing on the well logs to identify a plurality of layers; estimating wavelets from the seismic data and using the wavelets to tie synthetic seismograms from well logs to the seismic data; determining a mean value for each elastic property in each layer of the well logs and assigning the mean value to each layer to generate blocky well logs; using the wavelets to attempt to tie synthetic seismograms from the blocky well logs to the seismic data; defining facies-dependent properties based on the blocky well logs; performing global optimization using the facies-dependent properties and the seismic data to find thicknesses of the layers across the volume of interest; and mapping the reservoir structure based on the global optimization to generate a graphical representation of the reservoir structure.