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1. (WO2017040903) ENHANCED OIL RECOVERY COMPOSITIONS AND METHODS THEREOF

Pub. No.:    WO/2017/040903    International Application No.:    PCT/US2016/050067
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Sep 03 01:59:59 CEST 2016
IPC: C09K 8/584
C09K 8/592
C09K 8/58
Applicants: CHEVRON U.S.A. INC.
Inventors: DWARAKANATH, Varadarajan
SHONG, Robert G.
WINSLOW, Gregory
MALIK, Taimur
SOLANO, Marlon
Title: ENHANCED OIL RECOVERY COMPOSITIONS AND METHODS THEREOF
Abstract:
Additional oil recovery is obtained from a reservoir with a composition comprising at least a coupling solvent typically employed in waterborne coating compositions. Provided herein are embodiments of methods of recovering hydrocarbons using at least one coupling solvent, such as an oxygenated coupling solvent. The coupling solvent increases the mutual solubility with water at the injection temperature to facilitate the mixing and injection, particularly with an optional co-solvent. The coupling solvent helps mitigate formation plugging and improve performance when injected into a formation, as the solvent mixture moves from being miscible in the injection field water to being miscible in the reservoir oil, mobilizing the reservoir oil to increase oil recovery.