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121.发明授权公开(公告)号：US11518943B2
公开(公告)日：2022-12-06
申请号：US17131839
申请日：2020-12-23
Applicant: Chevron U.S.A. Inc.
Inventor： Hye-Kyung Timken
Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization or for normal alpha olefins. 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 separated into offgas, a naphtha/diesel fraction, a heavy fraction, and char. The naphtha/diesel fraction is passed to a crude unit in a refinery from which is recovered a straight run naphtha fraction (C5-C8) or a propane/butane (C3-C4) fraction. The straight run naphtha fraction, or propane and butane (C3-C4) fraction, is passed to a steam cracker for ethylene production. The ethylene is converted to normal alpha olefin and/or polyethylene. Also, a heavy fraction from the pyrolysis reactor can be combined with a heavy fraction of normal alpha olefin stream recovered from the steam cracker. The combined heavy fraction and heavy fraction of normal alpha olefin stream can be passed to a wax hydrogenation zone to produce wax.
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公开(公告)号：US20220372363A1
公开(公告)日：2022-11-24
申请号：US17670988
申请日：2022-02-14
Applicant: CHEVRON U.S.A. INC. , Chevron Oronite Company LLC
Inventor： Dennis A. Alexis , Gayani Pinnawala Arachchilage , Varadarajan Dwarakanath , Do Hoon Kim , Taimur Malik , Gregory A. Winslow , Aaron Wilhelm
IPC: C09K8/584 , C09K8/588 , C09K8/68 , F17D1/16 , C09K8/88 , C09K8/52 , E21B43/26 , C08L33/26 , C09K8/60
Abstract: Disclosed are compositions and methods for use in oil and gas operations.
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公开(公告)号：US11506813B2
公开(公告)日：2022-11-22
申请号：US16774914
申请日：2020-01-28
Applicant: CHEVRON U.S.A. INC.
Inventor： Shane J. Prochnow , Patrick R K Brennan , Amy C. Moss-Russell
IPC: G01V99/00 , G06F30/20 , G06F30/27 , G06F111/08
Abstract: Systems and methods are disclosed for generating subsurface feature prediction probability distributions from a subsurface feature as a function of position in a subsurface volume of interest. For example, a computer-implemented method may include: obtaining subsurface data and well data, generating subsurface feature values, generating subsurface feature realizations, generating subsurface feature realization uncertainty values, generating subsurface parameter values, generating subsurface parameter realizations, generating subsurface feature prediction probability distributions, generating a first representation of likelihoods of the subsurface feature values, and displaying the first representation.
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公开(公告)号：US11499102B2
公开(公告)日：2022-11-15
申请号：US17076471
申请日：2020-10-21
Applicant: CHEVRON U.S.A. INC
Inventor： Vijay R. Sampath
Abstract: The present invention pertains to improved processes and catalysts for aromatization. The processes generally contacting a feed stream comprising a naphtha fraction having a C6 to C8 content with a catalyst pellet composition to form aromatic hydrocarbons. The catalyst pellet composition generally comprises a plurality of cylindrical pellets each pellet comprising a Group VIII metal on a zeolite. The pellets may have (a) a plurality of holes passing through the length of the cylindrical pellets, (b) a dome-shaped top and bottom, and (c) a plurality of semi-circular grooves along the length of the exterior of the cylinder.
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公开(公告)号：US11491441B2
公开(公告)日：2022-11-08
申请号：US15995278
申请日：2018-06-01
Applicant: Chevron U.S.A. Inc.
Inventor： Marcus Vinicius Dutra e Mello , Vijay R. Sampath , Steven Xugi Song
Abstract: A method for scrubbing flue gas, comprising: providing a rotating packed bed device onboard a ship or an offshore floating vessel; mixing seawater with the flue gas under centrifugal force in the rotating packed bed device to prevent blow-by and produce a scrubbed flue gas having low sulfur; and discharging the scrubbed flue gas; wherein the scrubbed flue gas has less than half of the sulfur that was originally present in the flue gas before the mixing. Also, a system for scrubbing the flue gas according to the method described. Also, a marine ship, comprising: an engine that combusts HSFO; a rotating packed bed device, in a hull or funnel of the ship, comprising a rotating shaft and a porous material that mixes seawater with flue gas and reduces sulfur in the flue gas; and a connector from the engine and the rotating packed bed device.
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Patent Agency Ranking
公开(公告)号：US20220333027A1
公开(公告)日：2022-10-20
申请号：US17639735
申请日：2020-08-31
Applicant: CHEVRON ORONITE COMPANY LLC , CHEVRON U.S.A. INC.
Inventor： Richard Eugene CHERPECK , Amir Gamal MARIA , Theresa Liang GUNAWAN
Abstract: Provided is a fuel composition for improving fuel efficiency. The fuel composition includes greater than 50 wt % of a hydrocarbon fuel boiling in the gasoline or diesel range, a minor amount a zinc chelator, and a minor amount of a friction modifier. The friction modifier includes at least one polar group.
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公开(公告)号：US11466557B2
公开(公告)日：2022-10-11
申请号：US17089591
申请日：2020-11-04
Applicant: CHEVRON U.S.A. INC.
Inventor： Jiehao Wang , Amit Kumar Singh , Xinghui Liu , Margaretha Catharina Maria Rijken
IPC: E21B47/003 , E21B33/13 , E21B43/26 , E21B49/08 , E21B43/14 , E21B49/00 , E21B43/116 , E21B43/267 , G06F30/28 , G06N7/00 , G06N3/08 , G06F30/27 , G06F113/08
Abstract: Embodiments of determining proppant distribution for a plurality of clusters within a fracture stage of a wellbore are provided herein. The embodiments include performing computational fluid dynamics modeling on at least a portion of a wellbore without any openings and a portion of the wellbore comprising at least one opening along a single azimuth to determine proppant efficiency for the at least one opening along the single azimuth while simulating flow of fluid, proppant, or any combination thereof through the wellbore, an equilibrium proppant concentration profile for the portion of the wellbore without any openings, and an equilibrium velocity profile for the portion of the wellbore without any openings. The embodiment further comprises determining proppant efficiency for at least one other opening of the wellbore at a different azimuth, generating a model that correlates the single azimuth among other items, and using the model to determine the proppant distribution.
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公开(公告)号：US11466230B1
公开(公告)日：2022-10-11
申请号：US17326028
申请日：2021-05-20
Applicant: CHEVRON U.S.A. INC.
Inventor： Lin Li , Michelle K. Young
Abstract: A process is provided for removing organic chlorides from glyceride oil. The process includes the steps of (a) reacting a glyceride oil comprising organic chlorides with a liquid aqueous system at a temperature of at least 80° C. to form a treated glyceride oil and (b) separating the treated glyceride oil from the liquid aqueous system. The treated glyceride oil has a reduced concentration of organic chlorides compared to the glyceride oil reacted in step (a).
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公开(公告)号：US11465122B2
公开(公告)日：2022-10-11
申请号：US16833841
申请日：2020-03-30
Applicant: Chevron U.S.A. Inc.
Inventor： Dan Xie
IPC: B01J20/18 , C01B32/50 , B01D53/04 , B01D53/047 , B01D53/22 , B01D71/02 , B01J20/28 , B01J20/30 , C01B39/02 , C01B39/46 , C10L3/10
Abstract: The present disclosure is directed to a method for making a MER framework type zeolite, a MER framework type zeolite having a stick-like morphology, and processes for the selective separation of carbon dioxide (CO2) from multi-component feedstreams containing CO2 using the zeolite.
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130.发明申请公开(公告)号：US20220315677A1
公开(公告)日：2022-10-06
申请号：US17709579
申请日：2022-03-31
Applicant: CHEVRON U.S.A. INC.
Inventor： Sven Ivar Hommeltoft
IPC: C08F110/06 , C07C4/06 , C07C2/32 , B01D53/04
Abstract: The present invention is directed to metallocene catalyzed oligomerization of olefin feed stock without fractionation of alkane and olefin.
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