Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David Dino0
Date of Patent
September 21, 2010
0Patent Application Number
120750270
Date Filed
March 7, 2008
0Patent Primary Examiner
Patent abstract
A method of providing a substantially constant rheological profile of a drilling fluid over a temperature range of about 120° F. to about 40° F. includes adding a drilling fluid additive to the drilling fluid, wherein the drilling fluid additive includes the reaction product of a carboxylic acid with at least two carboxylic moieties; and a polyamine having an amine functionality of two or more. A composition, such as an oil based drilling fluid, includes the reaction product of a carboxylic acid with at least two carboxylic moieties and a polyamine having an amine functionality of two or more.
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