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    FORMING DILUTED BRINE WITHOUT ADDITION OF SOFT OR CONTAMINATED WATER IN AN OIL AND GAS TREATMENT FACILITY
    241.
    发明申请
    FORMING DILUTED BRINE WITHOUT ADDITION OF SOFT OR CONTAMINATED WATER IN AN OIL AND GAS TREATMENT FACILITY 审中-公开

    公开(公告)号：US20190263685A1

    公开(公告)日：2019-08-29

    申请号：US15905991

    申请日：2018-02-27

    Applicant: Chevron U.S.A. Inc.

    Inventor： Nitesh BHUWANIA ,  Prakhar PRAKASH ,  Evan Shigeto HATAKEYAMA ,  Christopher MARCOTTE

    IPC: C02F1/44 ,  B01D61/00

    Abstract: Processes and systems form diluted brine from saturated brine without direct addition of soft or contaminated water in an oil and/or gas treatment facility. Water containing salt contaminants is fed to a forward osmosis membrane. The salt contaminants can be cations, anions, carbonate, bicarbonate and combinations thereof. A saturated brine solution is fed to a draw side of the forward osmosis membrane which allows water to pass from the feed side to the draw side and minimizes the passage of the salt contaminants from the feed side to the draw side. A diluted brine solution having a TDS concentration lower than a TDS concentration of the saturated brine solution is removed from the draw side outlet of the forward osmosis membrane. A concentrated contaminated water stream having a TDS concentration higher than a TDS concentration of the contaminated water feed is removed from the feed side outlet of the forward osmosis membrane.

    Synthesis of molecular sieve SSZ-35
    242.
    发明授权
    Synthesis of molecular sieve SSZ-35 有权

    公开(公告)号：US10384950B1

    公开(公告)日：2019-08-20

    申请号：US15956963

    申请日：2018-04-19

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dan Xie

    IPC: C01B39/48 ,  B01J29/70

    Abstract: A molecular sieve having the framework structure of SSZ-35 is produced using 3,3′-(butane-1,4-diyl)bis(1-methyl-2-propyl-1H-imidazol-3-ium) dications as a structure directing agent.

    Synthesis of molecular sieve SSZ-43
    243.
    发明授权
    Synthesis of molecular sieve SSZ-43 有权

    公开(公告)号：US10384949B1

    公开(公告)日：2019-08-20

    申请号：US15950232

    申请日：2018-04-11

    Applicant: Chevron U.S.A. Inc.

    Inventor： Dan Xie

    IPC: C01B39/48 ,  B01J29/70

    Abstract: A molecular sieve having the framework structure of SSZ-43 is produced using one or more of 3,3′-(butane-1,4-diyl)bis(1-methyl-2-propyl-1H-imidazol-3-ium) dications and N,N′-(1,4-phenylenebis(methylene))bis(N,N-diethylethaniminium) dications as a structure directing agent.

    Apparatus and method for reducing impact of stresses on a subsea pipeline
    245.
    发明授权
    Apparatus and method for reducing impact of stresses on a subsea pipeline 有权

    公开(公告)号：US10371288B1

    公开(公告)日：2019-08-06

    申请号：US16166613

    申请日：2018-10-22

    Applicant: Chevron U.S.A. Inc.

    Inventor： Antonio Critsinelis ,  Sid A. Mebarkia ,  Kale Z. Lundeen

    IPC: F16L1/24 ,  F16L3/16 ,  F16L1/12 ,  E21B43/01

    Abstract: Disclosed are an apparatus and method for supporting a portion of a pipeline for conveying produced fluids in a subsea environment to facilitate movement of the portion of the pipeline over a seabed in response to stresses on the pipeline. The portion of the pipeline is supported on a rigid support structure having rotatable components that rotate about an axle attached to the rigid support structure such that the rigid support structure and the portion of the pipeline can move over the seabed. The apparatus and method eliminate the need for costly mud mats or suction piles to accommodate movement in the subsea pipeline and prevent pipeline walking. By facilitating movement of the portion of the pipeline, lateral deformation and axial displacement of the portion of the pipeline can be reduced or eliminated.

    ENGINEERING FORMATION WETTABILITY CHARACTERISTICS
    246.
    发明申请
    ENGINEERING FORMATION WETTABILITY CHARACTERISTICS 审中-公开

    公开(公告)号：US20190233713A1

    公开(公告)日：2019-08-01

    申请号：US16380735

    申请日：2019-04-10

    Applicant: Chevron U.S.A. Inc.

    Inventor： Adwait CHAWATHE ,  Nariman FATHI NAJAFABADI ,  Jagannathan MAHADEVAN

    IPC: C09K8/58 ,  G16C20/30 ,  C09K8/84

    Abstract: Methods and systems are provided to enhance recovery of hydrocarbons from a formation by altering wettability at a surface of the formation towards more water-wet. One method includes: providing a formation; providing an aqueous stream for injecting into the formation; adding a reducing agent to the aqueous stream; and injecting the aqueous stream with the reducing agent into the formation to alter a surface charge of the surface of the formation to become more water-wet to enhance recovery of hydrocarbons from the formation. The reducing agent is responsive to characteristics of the formation, characteristics of brine of the formation, and characteristics of hydrocarbons of the formation. Also provided is a method to select a brine composition to be injected into a formation to alter wettability at a surface of the formation towards more water-wet to enhance recovery of hydrocarbons from the formation.

    Linguistic goal oriented decision making
    248.
    发明授权
    Linguistic goal oriented decision making 有权

    公开(公告)号：US10354191B2

    公开(公告)日：2019-07-16

    申请号：US14851643

    申请日：2015-09-11

    Applicant: Chevron U.S.A. Inc. ,  University of Southern California

    Inventor： Mohammad Reza Rajati ,  Jerry M. Mendel ,  Andrei Popa ,  Lisa A. Brenskelle

    IPC: G06F15/18 ,  G06N5/04

    Abstract: A method of attaining a linguistic goal output of a process using a linguistic goal oriented decision making system, comprising setting the output value to a linguistic goal, and establishing a set of descriptive rules using historical data, wherein each descriptive rule has at least one variable, a decision variable, and at least one linguistic output value. The method further comprises grouping the set of descriptive rules into subsets of descriptive rules according to the linguistic output value of each descriptive rule and establishing decision rules based on comparing the grouped subsets of descriptive rules, the one or more decision rules describing a modification of a decision variable associated with at least one of the descriptive rules to affect the process.

    System and method for prismatic seismic imaging
    249.
    发明授权
    System and method for prismatic seismic imaging 有权

    公开(公告)号：US10353095B2

    公开(公告)日：2019-07-16

    申请号：US15191670

    申请日：2016-06-24

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Yonghe J. Sun ,  Weihong Fei ,  Craig A. Barker

    IPC: G01V1/30 ,  G01V1/36

    Abstract: A method is described for seismic imaging of complex subsurface volumes using prismatic seismic energy. The method receives a seismic dataset and an earth model. The earth model is perturbed such that prismatic reflections will generate perturbed seismic amplitudes in a target area and seismic imaging is performed using the perturbed model. A second seismic image is generated using a second earth model; the second earth model may be the original earth model or a second perturbed model wherein the perturbation generates different seismic amplitudes in the target area. The two seismic images are differenced to generate a prismatic seismic image that can be used to identify geologic features that are poorly illuminated in conventional imaging. The method may be executed by a computer system.

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