ASPHALT WATER-BASED DRILLING FLUID ADDITIVE

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United States of America Patent

APP PUB NO 20180066173A1
SERIAL NO

15694034

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An emulsified drilling fluid additive includes an emulsion of asphalt, at least one emulsifier, cellulose ether, and water. The asphalt has a softening point of 160 to 212° F., a penetration depth of 0 to 45 mm, and a viscosity of 200 to 800 cP at 350° F. The drilling fluid additive has an average particle size of 0.1-10 microns. The drilling fluid has an API fluid loss at 7.5 minutes of 0 to 0.5 mL and an API fluid loss at 30 minutes of 0 to 3.5 mL. A method of making the drilling fluid additive includes mixing at least one emulsifier, cellulose ether, and water to form a solution, heating a water-dispersible asphalt to above 300° F. and adding the asphalt to the water-based solution in a colloid mill to form an emulsion.

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Patent Owner(s)

Patent OwnerAddress
OWENS CORNING INTELLECTUAL CAPITAL LLCONE OWENS CORNING PARKWAY TOLEDO OH 43659

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ploense, David Michael Downers Grove, US 11 13

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