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公开(公告)号：US20240059986A1
公开(公告)日：2024-02-22
申请号：US18269922
申请日：2021-12-29
Applicant: CHEVRON U.S.A. INC.
Inventor： Joel SCHMIDT , Cong-Yan CHEN , Theodorus Ludovicus Michael MAESEN , Dan XIE
IPC: C10G65/12
CPC classification number: C10G65/12 , C10G2300/70 , C10G2300/807 , C10G2300/1081
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 specific type of zeolite based catalyst which has been found to provide high conversion with minimal iso-paraffin products. In one embodiment, the zeolite is of the framework PWO. The reaction conducted in the presence of the zeolite based catalyst produces an n-paraffin rich product that needs no separation step before being fed to a steam cracker to produce lower olefins.
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公开(公告)号：US20240058802A1
公开(公告)日：2024-02-22
申请号：US18036572
申请日：2021-11-11
Applicant: CHEVRON U.S.A. INC.
Inventor： Yihua ZHANG , Adeola Florence OJO , Guan Dao LEI
CPC classification number: B01J29/7461 , B01J21/04 , B01J29/7023 , B01J29/703 , B01J29/74 , B01J29/80 , B01J35/1038 , B01J35/1042 , B01J35/1047 , B01J35/1061 , C10G45/64 , C10M109/02 , B01J2029/062
Abstract: An improved hydroisomerization catalyst and process for making a base oil product wherein the catalyst comprises a base extrudate that includes SSZ-91 molecular sieve and a high nanopore volume alumina. The catalyst and process generally involves the use of a SSZ-91/high nanopore volume alumina based catalyst to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst base extrudate advantageously comprises an alumina having a pore volume in the 11-20 nm pore diameter range of 0.05 to 1.0 cc/g, with the base extrudate formed from SSZ-91 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 and process provide improved base oil yield with reduced gas and fuels production.
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53.发明授权公开(公告)号：US11905466B2
公开(公告)日：2024-02-20
申请号：US18051001
申请日：2022-10-30
Applicant: Chevron U.S.A. Inc.
Inventor： Hye-Kyung Timken
CPC classification number: C10G1/10 , C07C2/76 , C07C4/04 , C08F10/02 , C10B53/07 , C10G1/002 , C10G11/18 , C07C2/54 , C10G2300/1003 , C10G2300/202 , C10G2300/205 , C10G2300/304 , C10G2300/305 , C10G2400/02 , C10G2400/04 , C10G2400/08 , C10G2400/20 , C10G2400/22 , C10G2400/26
Abstract: Provided in one embodiment is a continuous process for converting waste plastic into recycle for polyethylene 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 pyrolysis oil and optionally wax comprising a naphtha/diesel and heavy fraction, and char. The pyrolysis oil and wax is passed to a refinery FCC unit from which a liquid petroleum gas C3-C5 olefin/paraffin mixture fraction is recovered. The liquid petroleum gas C3-C5 olefin/paraffin mixture fraction is passed to a refinery alkylation unit, with a propane and butane fraction recovered from the alkylation unit. The propane and butane fraction is then passed to a steam cracker for ethylene production. In another embodiment, a naphtha fraction (C5-C8) is recovered from the alkylation unit and passed to the steam cracker. In another embodiment, a propane/propylene fraction (C3-C3) is recovered from the FCC and passed to the steam cracker.
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公开(公告)号：US11898100B2
公开(公告)日：2024-02-13
申请号：US17121333
申请日：2020-12-14
Applicant: Chevron U.S.A. Inc.
Inventor： Gayani W. Pinnawala , Sujeewa S. Palayangoda , Varadarajan Dwarakanath , Mohamad Salman , Mohsen S. Tagavifar
CPC classification number: C09K8/86 , C10G33/04 , C09K2208/26
Abstract: Disclosed herein are methods and composition for breaking foam, emulsions, or any combination thereof.
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55.发明公开公开(公告)号：US20240044435A1
公开(公告)日：2024-02-08
申请号：US18489575
申请日：2023-10-18
Applicant: Chevron U.S.A. Inc.
Inventor： Antonio C.F CRITSINELIS , Sid MEBARKIA , Michelle A. Wise , Yesudas J. MANIMALA , William C. HUGHES , Steven W. COCHRAN , Edgar URIBE , Jason D. GARCIA
CPC classification number: F16L53/70 , F16L1/20 , E21B41/0007 , E21B43/01
Abstract: Disclosed are systems and methods for thermal management of subsea interconnecting conduit such as jumpers that provide cooling and heat retention of production fluids within the jumpers. In a jumper circuit, parallel sections of jumper are provided having differing amounts of heat transfer between surrounding seawater and production fluids flowing within. Valving is provided to control fluid flow between the parallel sections of jumper, thus controlling the amount of heat transfer between the surrounding seawater and the jumper circuit. A control system can be used to generate an alarm based on fluid temperature and/or fluid flow rate within the jumper circuit indicating the need to adjust the valving to manage the temperature of fluids within the jumper circuit. Changes may be needed particularly depending on the phase of production, e.g., early life, normal operation, shut down and late life operation.
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Patent Agency Ranking
公开(公告)号：US11891300B2
公开(公告)日：2024-02-06
申请号：US17516049
申请日：2021-11-01
Applicant: CHEVRON U.S.A. INC.
Inventor： Bi-Zeng Zhan , Steven Xuqi Song , Trenton Otto , Yaofan Yi
CPC classification number: C01B3/0015 , C10G69/02 , C01B2203/065 , C01B2203/1247 , C10G2300/202 , C10G2300/301 , C10G2300/307 , C10G2300/308 , C10G2300/4018
Abstract: The present disclosure refers in one embodiment to processes for making and transporting clean hydrogen fuel. The processes may involve hydrotreating, hydrocracking, or both hydrotreating and hydrocracking an aromatic feedstock under conditions to obtain a liquid hydrocarbon fuel. The liquid hydrocarbon fuel is hydrogenated to obtain a hydrogen-rich fuel that is transported to a dehydrogenation facility that may also be at or near a hydrogen station. The hydrogen-rich fuel is used to obtain hydrogen and a second liquid hydrocarbon fuel.
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公开(公告)号：US20240019600A1
公开(公告)日：2024-01-18
申请号：US17866135
申请日：2022-07-15
Applicant: Chevron U.S.A. Inc.
Inventor： Robert Chadwick Holmes , Fabien Jean Nicolas Laugier
Abstract: A group of wells may be located within a region of interest. Multiple scenarios of boundary locations within the group of wells may be obtained. Boundary likelihood curves for the wells may be generated. Different number and/or locations of boundaries within different scenarios of boundary locations may be synthetized into the boundary likelihood curves. A visual representation of the boundary likelihood curves may be generated. The visual representation of the boundary likelihood curves may be used to automatically select and/or guide manual selection of boundary locations in the region of interest.
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公开(公告)号：US11873697B2
公开(公告)日：2024-01-16
申请号：US16965627
申请日：2019-08-30
Applicant: Halliburton Energy Services, Inc. , SDG LLC , Chevron U.S.A. Inc.
Inventor： Lonnie Carl Helms , Frank Vinicio Acosta Villarreal , Avinash Gopal Dharne , William M. Moeny , Neal Gregory Skinner
CPC classification number: E21B33/165 , E21B7/24
Abstract: The present disclosure includes a plug for cementing a wellbore. The plug may include a cylinder. The cylinder may include at least one body including a non-conductive material with conductive filaments dispersed within the non-conductive material. The present disclosure also includes float equipment for cementing a wellbore. The float equipment may include a casing segment including an inner surface, drillable material affixed to the inner surface of the casing segment, and a check valve attached to the drillable material. The drillable material may include a non-conductive material and conductive filaments dispersed within the non-conductive material.
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公开(公告)号：US11873455B2
公开(公告)日：2024-01-16
申请号：US17138038
申请日：2020-12-30
Applicant: Chevron U.S.A. Inc.
Inventor： Kenny Peinado , Jifei Jia , Guan-Dao Lei , Jay Parekh , Yihua Zhang
CPC classification number: C10G67/0418 , C10G45/62 , C10G2300/1022 , C10G2300/304 , C10G2300/70 , C10G2400/10
Abstract: Provided is a process for preparing base oil from a waxy hydrocarbon feedstock by contacting the hydrocarbon feedstock in a hydroisomerization zone under hydroisomerization conditions. The reaction is in the presence of hydrogen and an inert gas, with the total pressure in the hydroisomerization zone being at least 400 psig. A product from the hydroisomerization zone is collected and separated into base oil products and fuel products. The inert gas can comprise any suitable inert gas, but is generally nitrogen, methane or argon. Nitrogen is used in one embodiment.
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公开(公告)号：US20230399934A1
公开(公告)日：2023-12-14
申请号：US18033290
申请日：2021-11-10
Applicant: Chevron U.S.A. Inc.
Inventor： Robert Chadwick HOLMES , Frank TAMAKLOE , Fabien J. LAUGIER
CPC classification number: E21B44/00 , E21B47/09 , E21B2200/20
Abstract: A region of interest may include a group of wells. The group of wells may be connected to form a graph of wells, with nodes representing wells and edges representing connections between wells. Connection scores from dynamic time warping paths for individual pairs of connected wells may be used to detect anomalies in the region of interest. Number of boundaries within individual wells may be used to detect anomalies in the region of interest. Connection score and/or number of boundaries may be represented on a visual map of the region of interest.
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