Reduced abrasiveness with micronized weighting material
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United States of America Patent
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Jan 26, 2010
Grant Date -
Jan 1, 2009
app pub date -
Aug 13, 2008
filing date -
Jul 24, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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