Invention Grant
- Patent Title: Synthesis of a cationic surfmer and its copolymers for enhanced oil recovery
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Application No.: US18325989Application Date: 2023-05-30
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Publication No.: US12049529B2Publication Date: 2024-07-30
- Inventor: Xuan Zhang , Ming Han , Limin Xu
- Applicant: SAUDI ARABIAN OIL COMPANY
- Applicant Address: SA Dhahran
- Assignee: SAUDI ARABIAN OIL COMPANY
- Current Assignee: SAUDI ARABIAN OIL COMPANY
- Current Assignee Address: SA Dhahran
- Agency: Osha Bergman Watanabe & Burton LLP
- The original application number of the division: US16935943 2020.07.22
- Main IPC: E21B43/16
- IPC: E21B43/16 ; C07C231/12 ; C07C233/38 ; C08F220/56 ; C08F220/58 ; C09K8/58 ; C09K8/584 ; C09K8/588

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.
Public/Granted literature
- US20230303744A1 SYNTHESIS OF A CATIONIC SURFMER AND ITS COPOLYMERS FOR ENHANCED OIL RECOVERY Public/Granted day:2023-09-28
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