公开(公告)号：US20220025090A1

公开(公告)日：2022-01-27

申请号：US16935943

申请日：2020-07-22

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Xuan Zhang ,  Ming Han ,  Limin Xu

IPC: C08F220/58 ,  C07C233/38 ,  C07C231/12 ,  C08F220/56 ,  C09K8/588 ,  C09K8/584 ,  E21B43/16

Abstract: Provided is a quaternary ammonium surfmer, that may have the following general formula (I): N+—R1R2R3R4 (X−), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer into the subterranean formation.

公开(公告)号：US20250019586A1

公开(公告)日：2025-01-16

申请号：US18350469

申请日：2023-07-11

Applicant: Saudi Arabian Oil Company

Inventor： Limin Xu ,  Ming Han ,  Tianping Huang

IPC: C09K8/584

Abstract: A system and a method for making and using an enhanced oil recovery (EOR) fluid. The EOR fluid includes a base fluid, an anionic-nonionic surfactant including one of sodium alkylphenol ethoxylate carboxylate (APEC), sodium alkyl ethoxylate carboxylate (AEC), sodium alkylphenol ethoxylate sulfate (APES), or sodium alkyl ethoxylate sulfate (AES), and a second surfactant including a cationic surfactant including an alkyl pyridine salt.

公开(公告)号：US11697700B2

公开(公告)日：2023-07-11

申请号：US16935943

申请日：2020-07-22

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Xuan Zhang ,  Ming Han ,  Limin Xu

IPC: E21B43/16 ,  C09K8/58 ,  C08F220/58 ,  C08F220/56 ,  C07C231/12 ,  C07C233/38 ,  C09K8/584 ,  C09K8/588

CPC classification number: C08F220/585 ,  C07C231/12 ,  C07C233/38 ,  C08F220/56 ,  C09K8/584 ,  C09K8/588 ,  E21B43/16

Abstract: Provided is a quaternary ammonium surfmer, that may have the following general formula (I): N+—R1R2R3R4 (X−), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer into the subterranean formation.

公开(公告)号：US20250011640A1

公开(公告)日：2025-01-09

申请号：US18753577

申请日：2024-06-25

Applicant: Saudi Arabian Oil Company

Inventor： Limin Xu ,  Ming Han ,  Tianping Huang

IPC: C09K8/584 ,  C08K5/06 ,  C08K5/19 ,  C08K5/41 ,  C09K8/588 ,  E21B43/16

Abstract: A method for reducing the interfacial tension between a hydrocarbon fluid and a surfactant mixture solution during chemical enhanced oil recovery includes introducing a surfactant mixture solution to a hydrocarbon-bearing reservoir, thereby reducing the interfacial tension at a liquid-liquid interface of the hydrocarbon fluid and the surfactant mixture solution. The surfactant mixture solution includes a polyacrylamide polymer, a brine solution, and a surfactant mixture. The surfactant mixture includes an anionic surfactant, a cationic surfactant, and a nonionic surfactant. The anionic surfactant may include organosulfate. The cationic surfactant may include a quaternary ammonium, a brominated trimethylammonium, a chloride trimethylammonium, or combinations thereof. The nonionic surfactant may include a polyoxyethylene fatty acid ester, a phenylated ethoxylate, or combinations thereof.

公开(公告)号：US12049529B2

公开(公告)日：2024-07-30

申请号：US18325989

申请日：2023-05-30

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Xuan Zhang ,  Ming Han ,  Limin Xu

IPC: E21B43/16 ,  C07C231/12 ,  C07C233/38 ,  C08F220/56 ,  C08F220/58 ,  C09K8/58 ,  C09K8/584 ,  C09K8/588

CPC classification number: C08F220/585 ,  C07C231/12 ,  C07C233/38 ,  C08F220/56 ,  C09K8/584 ,  C09K8/588 ,  E21B43/16

Abstract: Provided is a quaternary ammonium surfmer and copolymers thereof. The surfmer may have the following general formula (I): N+—R1R2R3R4 (X−), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer, copolymers thereof, and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer or copolymers thereof into the subterranean formation.

公开(公告)号：US20240102931A1

公开(公告)日：2024-03-28

申请号：US18001507

申请日：2022-05-05

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Lyla Almaskeen ,  Abdulkareem AlSofi ,  Limin Xu

IPC: G01N21/64 ,  C08J3/075 ,  C08J3/24

CPC classification number: G01N21/643 ,  C08J3/075 ,  C08J3/248 ,  C08J2333/26 ,  G01N2021/6432

Abstract: A method includes providing a gelant including a cross-linkable polymer, a crosslinking agent and an aqueous fluid, adding one or more fluorescent rare earth elements to the gelant to provide a fluorescent gelant solution in which a fluorescence emission is quenched, and initiating crosslinking of the gelant to form a gel by heating the fluorescent gelant solution. The intensity of the fluorescence emission of the fluorescent gelant solution is monitored as an indicator of gelation status and a gelation point of the gelant may be identified based on the intensity of the fluorescent emission of the fluorescent gelant solution.

公开(公告)号：US20230303744A1

公开(公告)日：2023-09-28

申请号：US18325989

申请日：2023-05-30

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Xuan Zhang ,  Ming Han ,  Limin Xu

IPC: C08F220/58 ,  C07C231/12 ,  C07C233/38 ,  C08F220/56 ,  C09K8/584 ,  C09K8/588 ,  E21B43/16

CPC classification number: C08F220/585 ,  C07C231/12 ,  C07C233/38 ,  C08F220/56 ,  C09K8/584 ,  C09K8/588 ,  E21B43/16

Abstract: Provided is a quaternary ammonium surfmer and copolymers thereof. The surfmer may have the following general formula (I): N+—R1R2R3R4 (X−), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer, copolymers thereof, and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer or copolymers thereof into the subterranean formation.

公开(公告)号：US20210147744A1

公开(公告)日：2021-05-20

申请号：US16683761

申请日：2019-11-14

Applicant: Saudi Arabian Oil Company

Inventor： Limin Xu ,  Ming Han ,  Alhasan Fuseni ,  Dongqing Cao

IPC: C09K8/584 ,  E21B43/16

Abstract: Surfactant mixtures include a cationic surfactant, an anionic surfactant, and a nonionic surfactant in a brine solution. The cationic surfactant may include at least one quaternary ammonium, at least one brominated trimethylammonium, or combinations thereof. The anionic surfactant may include at least one organosulfate. The nonionic surfactant may include the nonionic surfactant comprised of a polyoxyethylene fatty acid ester, a phenylated ethoxylate, or combinations thereof. The surfactant mixtures may be incorporated into methods for reducing the interfacial tension between the surfactant mixture and oily fluids during chemical enhanced oil recovery. The methods for reducing the interfacial tension may include introducing the surfactant mixture comprising a cationic surfactant, an anionic surfactant, and a nonionic surfactant in a brine solution to a hydrocarbon-bearing reservoir, thereby reducing the interfacial tension at a liquid-liquid interface of the surfactant mixture and the fluid.

公开(公告)号：US20250026977A1

公开(公告)日：2025-01-23

申请号：US18910054

申请日：2024-10-09

Applicant: Saudi Arabian Oil Company

Inventor： Limin Xu ,  Ming Han ,  Tianping Huang

IPC: C09K8/584

Abstract: This disclosure relates to thermal stimuli-responsive surfactant mixtures useful for reducing water/oil interfacial tension at high temperatures and increasing water/oil interfacial tension at low temperatures. The disclosure also relates to methods of using the surfactant mixtures for enhanced oil recovery applications.

公开(公告)号：US12139664B2

公开(公告)日：2024-11-12

申请号：US18117171

申请日：2023-03-03

Applicant: Saudi Arabian Oil Company

Inventor： Limin Xu ,  Ming Han ,  Tianping Huang

IPC: E21B43/34 ,  C09K8/584

Abstract: This disclosure relates to thermal stimuli-responsive surfactant mixtures useful for reducing water/oil interfacial tension at high temperatures and increasing water/oil interfacial tension at low temperatures. The disclosure also relates to methods of using the surfactant mixtures for enhanced oil recovery applications.