Organoclay compositions for drilling fluids useful to provide substantially constant rheology profiles to such fluids over a wide temperature range
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United States of America Patent
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Jan 3, 2017
Grant Date -
Jan 14, 2016
app pub date -
Jul 11, 2014
filing date -
Jul 11, 2014
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Abstract
A method of providing a substantially constant rheological profile of an oil-based drilling fluid over a temperature range of about 120° F. to about 40° F., comprising adding drilling fluid additive to the drilling fluid, wherein the drilling fluid additive comprises an organoclay composition comprising: organoclay compositions where a phyllosilicate clay is exchanged with quaternary ammonium ions having a formula of [NR1R2R3R4]+ wherein at least one of R1, R2 and R3 is a mixture of branched alkyl groups.
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