INVERT DRILLING FLUIDS

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United States of America Patent

APP PUB NO 20140182942A1
SERIAL NO

14006149

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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There is described an invert emulsion wellbore fluid that includes: an oleaginous external phase; a non-oleaginous internal phase, wherein a ratio of the oleaginous external phase and non-oleaginous internal phase is less than 50:50 by volume; an emulsifier; and a rheological additive comprising a sulphonated polymer formed from 100 to 10,000 monomers. There is also described a method of drilling a subterranean hole using the invert emulsion drilling fluid.

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Patent Owner(s)

Patent OwnerAddress
M-I DRILLING FLUIDS UK LIMITEDABERDEEN AB11 6DB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chapman, John William Kincardineshire, GB 4 37
Hodder, Michael Hayward Aberdeen, GB 9 4
Tomisson, Stuart Aberdeen, GB 1 0

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