METHOD FOR IMPROVING INJECTIVITY CONFORMANCE IN HETEROGENEOUS FORMATIONS
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United States of America Patent
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Jun 30, 2016
app pub date -
Dec 31, 2014
filing date -
Dec 31, 2014
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Abstract
A method for improving injectivity conformance of a hydrocarbon bearing heterogeneous subterranean formation by reducing the variance in water saturation throughout the formation, as a means of improving recovery when steam injection is later applied. A solvent plunger is developed by incremental injections of solvent followed by periods of arrest to permit the solvent to mix with the oil in the areas of relatively high water saturation thereby creating a plunger to uniformly displace the water in the formation to achieve water injectivity conformance along the well.
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