Reduced abrasiveness with micronized weighting material

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United States of America Patent

PATENT NO 7651983
APP PUB NO 20090005271A1
SERIAL NO

12191089

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method of prolonging the average lifespan of downhole tools that includes circulating the wellbore fluid comprising a base fluid and at least one of a micronized weighting agent and a dispersant coated weighting agent through the wellbore; wherein the wellbore fluid is characterized as having at least one of an equivalent weight, an equivalent or lower settling rate, and an equivalent or lower sag than a baseline wellbore fluid comprising a base fluid and an API-grade barite weighting agent; and wherein the wellbore fluid reduces abrasive wear of the downhole tool as compared to drilling with the baseline wellbore fluid is disclosed.

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Patent Owner(s)

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

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bradbury, Andrew Kincardinshire, GB 10 129
Massam, Jarrod Aberdeen, GB 21 263

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