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1. (WO2015119761) METHODS OF PRE-FLUSHING RESERVOIR PATHS FOR HIGHER RETURN OF HYDROCARBON FLUIDS

Pub. No.:    WO/2015/119761    International Application No.:    PCT/US2015/011890
Publication Date: Fri Aug 14 01:59:59 CEST 2015 International Filing Date: Tue Jan 20 00:59:59 CET 2015
IPC: E21B 43/16
C09K 8/58
Applicants: BAKER HUGHES INCORPORATED
Inventors: QUINTERO, Lirio
WEGHORN, Steven
Title: METHODS OF PRE-FLUSHING RESERVOIR PATHS FOR HIGHER RETURN OF HYDROCARBON FLUIDS
Abstract:
Pumping a pre-flush composition into a subterranean reservoir may contact at least a portion of non-polar material within a reservoir path. The pre- flush composition may have or include a polar fluid and at least one surfactant. The pre-flush composition may in situ form an in situ fluid in the reservoir path. The in situ formed fluid may include a portion of the non-polar material from the reservoir path, a polar phase from the polar fluid, and at least one surfactant. Pre-flushing the reservoir path may allow for greater hydrocarbon recovery when performing a subsequent operation as compared to an otherwise identical operation absent the pre-flushing the reservoir.