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, 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.
Claims7
A subterranean formation treatment fluid for treating a subterranean formation comprising a quaternary ammonium surfmer having the following general formula (II):
- R5—CH═CH—R6—COHN—R7—N+R1R2R4(Br−) (II)
- where:
- R1 and R2 are independently H or a C1-C3 alkyl,
- R4 is a C3-C6 alkyl having a terminal olefin double bond group,
- R5 is a C8-C16 alkyl,
- R6 is a C9-C16 alkyl, and
- R7 is a C2-C6 alkyl.
Dependencies are inferred from the claim text.