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    Multicarboxylate Compositions And Method Of Making The Same
    4.
    发明申请
    Multicarboxylate Compositions And Method Of Making The Same 有权
    多羧酸酯组合物及其制备方法

    公开(公告)号：US20150275068A1

    公开(公告)日：2015-10-01

    申请号：US14668147

    申请日：2015-03-25

    Applicant: Chevron U.S.A. Inc.

    Inventor： Robert George Shong ,  Varadarajan Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

    IPC: C09K8/584 ,  E21B43/16 ,  C07C59/305

    CPC classification number: C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  E21B43/16

    Abstract: The present disclosure generally relates to a multicarboxylate, such as an alkyl alkoxy dicarboxylate a method of making the multicarboxylate, and methods to use the multicarboxylate. A specific embodiment of the disclosure is a compound comprising the chemical formula: R1-R2-R3, wherein R1 comprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking R1 and R2; R2 comprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 comprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. The composition has a variety of uses but in some embodiments may be used in enhanced oil recovery processes.

    Abstract translation: 本公开内容通常涉及多羧酸盐，例如烷基烷氧基二羧酸盐，制备多羧酸盐的方法，以及使用多羧酸盐的方法。 本公开的具体实施方案是包含化学式：R 1 -R 2 -R 3的化合物，其中R 1包含具有7-150个碳原子的支链或非支链，饱和或不饱和的环状或非环状疏水性碳链; 连接R1和R2的氧原子; R2包含环氧乙烷，环氧丙烷，环氧丁烷或其组合的烷氧基化链; 并且R 3包含包含2-12个碳原子和2-5个-COOH或-COOM基团的支链或非支链烃链，其中M是一价，二价或三价阳离子。 该组合物具有各种用途，但在一些实施方案中可用于增强的油回收方法中。

    Optimizing scale management at the subsurface for improved well performance
    6.
    发明授权
    Optimizing scale management at the subsurface for improved well performance 有权

    公开(公告)号：US12071833B2

    公开(公告)日：2024-08-27

    申请号：US18100775

    申请日：2023-01-24

    Applicant: Chevron U.S.A. Inc.

    Inventor： Wei Wang ,  Wei Wei ,  Chao Yan ,  Gregory A. Winslow ,  Lauren N. DeVoe ,  Baosheng Liang

    IPC: E21B37/06 ,  E21B43/26 ,  E21B49/08 ,  E21B49/02

    CPC classification number: E21B37/06 ,  E21B43/26 ,  E21B49/02

    Abstract: A method for evaluating and optimizing scale management at a subsurface for improved well performance may include performing multiple first tests, where each first test combines a first fluid with a second fluid, wherein the first fluid comprises a concentration of a scale inhibitor and a chemistry of additional fluid components. The method may also include identifying an optimal mixture of the first fluid among the first tests, where the optimal mixture comprises a minimum concentration of the scale inhibitor that reduces scale deposition. The method may further include performing a second test that combines the first fluid with the scale inhibitor, the second fluid, and rock. The method may also include evaluating a concentration of the scale inhibitor in aqueous phase after a period of time after initiating the second test. The method may further include identifying a target fluid for use in a field operation at the subsurface.

    Enhanced oil recovery compositions and methods thereof
    8.
    发明授权
    Enhanced oil recovery compositions and methods thereof 有权

    公开(公告)号：US10851629B2

    公开(公告)日：2020-12-01

    申请号：US16421909

    申请日：2019-05-24

    Applicant: Chevron U.S.A. Inc.

    Inventor： Varadarajan Dwarakanath ,  Robert G. Shong ,  Gregory A. Winslow ,  Taimur Malik ,  Marlon Solano

    IPC: E21B43/16 ,  C09K8/58 ,  C09K8/584 ,  C09K8/588 ,  C08L5/00 ,  C08L81/08

    Abstract: Additional oil recovery is obtained from a reservoir with a composition comprising at least a coupling solvent typically employed in waterborne coating compositions. Provided herein are embodiments of methods of recovering hydrocarbons using at least one coupling solvent, such as an oxygenated coupling solvent. The coupling solvent increases the mutual solubility with water at the injection temperature to facilitate the mixing and injection, particularly with an optional co-solvent. The coupling solvent helps mitigate formation plugging and improve performance when injected into a formation, as the solvent mixture moves from being miscible in the injection field water to being miscible in the reservoir oil, mobilizing the reservoir oil to increase oil recovery.

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