Composition and method for recovering hydrocarbon fluids from a subterranean reservoir
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United States of America Patent
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Sep 1, 2015
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Aug 1, 2013
app pub date -
Jan 27, 2012
filing date -
Jan 27, 2012
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Abstract
A composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.
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