公开(公告)号：US20220098470A1

公开(公告)日：2022-03-31

申请号：US17321993

申请日：2021-05-17

申请人： Chevron U.S.A. Inc. ,  Chevron Oronite Company LLC

发明人： Dennis A. Alexis ,  Gayani Pinnawala Arachchilage ,  Varadarajan Dwarakanath ,  Do Hoon Kim ,  Taimur Malik ,  Gregory A. Winslow ,  Aaron Wilhelm

IPC分类号： C09K8/584 ,  C09K8/588 ,  C09K8/68 ,  F17D1/16 ,  C09K8/88 ,  C09K8/52 ,  E21B43/26 ,  C08L33/26 ,  C09K8/60

摘要： Disclosed are compositions and methods for use in oil and gas operations.

公开(公告)号：US20210198557A1

公开(公告)日：2021-07-01

申请号：US17104514

申请日：2020-11-25

申请人： Chevron U.S.A. INC.

发明人： NABIJAN NIZAMIDIN ,  Harold C. Linnemeyer ,  Timothy P. Theriot ,  Gojko Matovic ,  Seung Han ,  Do Hoon Kim ,  Kerry K. Spilker

IPC分类号： C09K8/62 ,  C09K8/60 ,  G01N11/04 ,  G06F30/28 ,  E21B43/26 ,  E21B47/00

摘要： The present invention relates generally to systems and processes for improved drag reduction estimation and measurement and more specifically to portable drag reduction analyzers and processes for upscaling drag reduction data for a variety of field applications. A drag reduction parameter ΔB for the fluid mixture is used for determining drag reduction for a fluid mixture in an oil field or pipeline operation.

公开(公告)号：US20210171721A1

公开(公告)日：2021-06-10

申请号：US17121325

申请日：2020-12-14

申请人： Chevron U.S.A. Inc.

发明人： Do Hoon Kim ,  Dennis A. Alexis ,  Varadarajan Dwarakanath ,  David R. Espinosa ,  Taimur Malik ,  Peter G. New ,  Adam C. Jackson ,  Christopher Michael Niemi

IPC分类号： C08J3/00 ,  C09K8/588 ,  E21B43/16 ,  C08J3/03

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 aqueous polymer solutions by combining these LP compositions with an aqueous fluid. The resulting aqueous 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 aqueous polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US09902894B2

公开(公告)日：2018-02-27

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 ,  Sumitra Subrahmanyan

IPC分类号： C09K8/588 ,  C09K8/584 ,  C09K8/68 ,  E21B43/16 ,  E21B43/26 ,  C09K8/88

CPC分类号： C09K8/588 ,  C09K8/584 ,  C09K8/68 ,  C09K8/88 ,  E21B43/16 ,  E21B43/26

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.

公开(公告)号：US20160122626A1

公开(公告)日：2016-05-05

申请号：US14927078

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

IPC分类号： C09K8/68 ,  E21B43/26 ,  E21B43/16

CPC分类号： C09K8/588 ,  C09K8/584 ,  C09K8/68 ,  C09K8/88 ,  E21B43/16 ,  E21B43/26

摘要： A method of enhancing oil recovery in a subterranean reservoir is disclosed. In one embodiment, the method comprises providing a wellbore and a polymer suspension. 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 of 20:80 to 80:20. The method comprises providing an aqueous fluid, mixing a sufficient amount of the polymer suspension in the aqueous fluid for the polymer to be hydrated resulting an injection solution in less than or equal to 4 hours, and injecting the injection solution into the wellbore. The injection solution contains a polymer concentration ranging from 100 ppm to 50,000 ppm and has a filter ratio of less than 1.5 at 15 psi using a 1.2 μm filter.

摘要翻译： 公开了一种提高地下储层中油回收率的方法。 在一个实施方案中，该方法包括提供井眼和聚合物悬浮液。 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 ：20。 该方法包括提供水性流体，将足够量的聚合物悬浮液混合在水性流体中以供待水合的聚合物在少于或等于4小时内产生注射溶液，并将注入溶液注入井眼。 注射溶液的聚合物浓度范围为100ppm至50,000ppm，并且在15psi下使用1.2μm的过滤器具有小于1.5的过滤比。