Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 7, 2011
Patent Application Number
11572337
Date Filed
July 20, 2004
Patent Primary Examiner
Patent abstract
The present invention relates to a liquid, self-breakable, temporary viscosifier agent (yield point enhancer) for oil based drilling muds, obtained by reacting one or more dicarboxylic fatty acids with a secondary dialkanolamine and thereafter with a tertiary tialkanolamine, and to oil based drilling muds containing it.
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