Polyol for improving sweep efficiency in oil reservoirs

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United States of America Patent

PATENT NO 11174714
APP PUB NO 20140332209A1
SERIAL NO

14273071

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The proposed method is an improved chemical flooding of an oil reservoir, especially one containing heavy oil or bitumen, that is cheaper than traditional chemical flooding techniques. This is obtained by viscosifying the displacing phase with a polyol, such as glycerol and/or its derivatives. Glycerol and its derivatives are an excellent additive because they are cheaper than the more commonly used chemicals, work only as a viscosifying agent, do not alter the reservoir properties, and have a wide range of viscosity facilitating the displacement of a wider range of heavy oils. This improved chemical flooding can be used with any other enhanced oil recovery technique, including thermal means, solvent assisted and polymer floodings.

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Patent Owner(s)

  • CONOCOPHILLIPS COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wickramathilaka, Siluni L Katy, US 2 11

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