Synthesis of a cationic surfmer and its copolymers for enhanced oil recovery
AssigneeSaudi Arabian Oil Company
InventorsXuan Zhang, Ming Han, Limin Xu
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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.
Claims10
A subterranean formation treatment fluid for treating a subterranean formation, comprising a surfmer copolymer comprising an acrylamide compound comonomer and a quaternary ammonium surfmer, wherein the quaternary ammonium surfmer has the following general formula (I):
- N+—R1R2R3R4(X−) (I)
- where:
- R1 and R2 are independently H or a C1-C3 alkyl,
- R3 is a C19+ amidoalkyl group,
- R4 is a C3-C6 alkyl having a terminal olefin double bond group, and
- X is a halogen.
A surfmer copolymer comprising an acrylamide compound comonomer and a quaternary ammonium surfmer, wherein the quaternary ammonium surfmer has the following general formula (I):
- N+−R1R2R3R4(X−) (I)
- where:
- R1 and R2 are independently H or a C1-C3 alkyl,
- R3 is a C19+ amidoalkyl group,
- R4 is a C3-C6 alkyl having a terminal olefin double bond group, and
- X is a halogen.
Dependencies are inferred from the claim text.