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公开(公告)号：US20240254382A1
公开(公告)日：2024-08-01
申请号：US18437955
申请日：2024-02-09
申请人： CHEVRON U.S.A. INC.
发明人： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
摘要： 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.
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公开(公告)号：US20240247180A1
公开(公告)日：2024-07-25
申请号：US18437915
申请日：2024-02-09
申请人： CHEVRON U.S.A. INC.
发明人： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
摘要： 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.
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公开(公告)号：US20220333003A1
公开(公告)日：2022-10-20
申请号：US17853283
申请日：2022-06-29
申请人： Chevron U.S.A. Inc.
发明人： Nabijan Nizamidin , Gayani W. Pinnawala , Guo-Qing Tang , Varadarajan Dwarakanath , Gregory A. Winslow , Jordan Taylor Isbell , Taimur Malik
IPC分类号： C09K8/584 , C09K8/588 , C09K8/60 , C09K8/66 , C09K8/68 , C09K8/80 , E21B43/20 , E21B43/26 , E21B47/11
摘要： Provided herein are compositions comprising borate-acid buffers, as well as methods of using these compositions in oil and gas operations, including enhanced oil recovery (EOR) operations, fracturing operations, stimulation operations, etc.
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公开(公告)号：US20200115621A1
公开(公告)日：2020-04-16
申请号：US16709872
申请日：2019-12-10
申请人： Chevron U.S.A. Inc.
发明人： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
摘要： 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.
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公开(公告)号：US20180230788A1
公开(公告)日：2018-08-16
申请号：US15511563
申请日：2016-09-02
申请人： Chevron U.S.A. Inc.
IPC分类号： E21B43/16
CPC分类号： E21B43/162 , C08L5/00 , C08L81/08 , C08L2201/54 , C09K8/58 , C09K8/584 , C09K8/588
摘要： 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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公开(公告)号：US09902895B2
公开(公告)日：2018-02-27
申请号：US14927091
申请日：2015-10-29
申请人： Chevron U.S.A. Inc.
发明人： Varadarajan Dwarakanath , Robert M. Dean , Do Hoon Kim , Dennis Arun Alexis , Sophany Thach , Taimur Malik , Anette Poulsen , Sumitra Subrahmanyan
摘要： An injection solution for injecting into a subterranean reservoir to enhance production and recovery of oil from the reservoir is disclosed. In one embodiment, the injection solution is prepared by mixing a sufficient amount of a pumpable, stable and substantially anhydrous polymer suspension in an aqueous fluid for the polymer to be hydrated in less than or equal to 4 hours, resulting in the injection solution containing a polymer concentration ranging from 100 ppm to 50,000 ppm. The injection solution has a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter. The polymer suspension comprises a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons suspended in a water soluble solvent having an HLB of greater than or equal to 8 and selected from a group, at a weight ratio from 20:80 to 80:20.
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公开(公告)号：US20170198202A1
公开(公告)日：2017-07-13
申请号：US15471255
申请日：2017-03-28
申请人： Chevron U.S.A. Inc.
CPC分类号： C09K8/584 , C07C59/305 , C09K8/588 , E21B43/16
摘要： The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. A specific embodiment relates to the use of an aqueous stream including a compound having 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.
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公开(公告)号：US20170158947A1
公开(公告)日：2017-06-08
申请号：US15372168
申请日：2016-12-07
申请人： Chevron U.S.A. Inc.
发明人： Do Hoon Kim , Dennis Arun Alexis , Varadarajan Dwarakanath , David Espinosa , Taimur Malik , Logan Jackson , Tom Lynch , Ronald Robinson , Frances Fournier , Hong Yang , Sukhjit Aujla
摘要： 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.
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公开(公告)号：US20160122624A1
公开(公告)日：2016-05-05
申请号：US14927091
申请日：2015-10-29
申请人： Chevron U.S.A. Inc.
发明人： Varadarajan Dwarakanath , Robert M. Dean , Do Hoon Kim , Dennis Arun Alexis , Sophany Thach , Taimur Malik , Anette Poulsen , Sumitra Subrahmanyan
IPC分类号： C09K8/588
摘要： An injection solution for injecting into a subterranean reservoir to enhance production and recovery of oil from the reservoir is disclosed. In one embodiment, the injection solution is prepared by mixing a sufficient amount of a pumpable, stable and substantially anhydrous polymer suspension in an aqueous fluid for the polymer to be hydrated in less than or equal to 4 hours, resulting in the injection solution containing a polymer concentration ranging from 100 ppm to 50,000 ppm. The injection solution has a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter. The polymer suspension comprises a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons suspended in a water soluble solvent having an HLB of greater than or equal to 8 and selected from a group, at a weight ratio from 20:80 to 80:20.
摘要翻译： 公开了一种用于注入地下储层以提高从储层中产生和回收油的注入溶液。 在一个实施方案中，注射溶液是通过在少于或等于4小时内将足量的可泵送的，稳定的和基本上无水的聚合物悬浮液混合在水性流体中以供待水合的聚合物制备的，导致注射溶液含有 聚合物浓度范围为100ppm至50,000ppm。 注射溶液在15psi下使用1.2μm的过滤器具有小于或等于1.5的过滤器比例。 聚合物悬浮液包含悬浮在HLB大于或等于8的水溶性溶剂中的平均分子量为0.5至30百万道尔顿的粉末聚合物，并且选自重量比为20:80至80的组 ：20。
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公开(公告)号：US20160122623A1
公开(公告)日：2016-05-05
申请号：US14927084
申请日：2015-10-29
申请人： Chevron U.S.A. Inc.
发明人： Varadarajan Dwarakanath , Robert M. Dean , Do Hoon Kim , Dennis Arun Alexis , Sophany Thach , Taimur Malik , Anette Poulsen
摘要： A method for making a polymer suspension for use in enhancing the production of oil from a formation is disclosed. In one embodiment, the method comprises mixing a powder polymer having an average molecular weight of 0.5 to 30 Million Daltons into a water soluble solvent having an HLB of greater than or equal to 8 for less than or equal to 24 hours. The water soluble solvent is selected from a group, at a weight ratio from 20:80 to 80:20. The polymer suspension is stable, pumpable, and substantially anhydrous; and it is hydrated for an injection solution in less than or equal to 4 hours, containing a polymer concentration ranging from 100 ppm to 50,000 ppm and having a filter ratio of less than or equal to 1.5 at 15 psi using a 1.2 μm filter, by mixing a sufficient amount of the polymer suspension in an aqueous fluid.
摘要翻译： 公开了一种制备用于增强从地层中产生油的聚合物悬浮液的方法。 在一个实施方案中，该方法包括将平均分子量为0.5至30百万道尔顿的粉末聚合物混合至具有大于或等于8的HLB的水溶性溶剂中小于或等于24小时。 水溶性溶剂选自重量比为20:80至80:20的基团。 聚合物悬浮液是稳定的，可泵送的并且基本上是无水的; 并且在小于或等于4小时内对于注射溶液进行水合，其含有聚合物浓度为100ppm至50,000ppm，并且使用1.2μm过滤器，在15psi下具有小于或等于1.5的过滤比，通过 将足够量的聚合物悬浮液混合在水性流体中。
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