Alkyl cyclic anhydride based emulsifiers for oil based mud

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United States of America Patent

PATENT NO 11377579
SERIAL NO

16469620

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Abstract

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Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and an emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from a group containing alkyl amine, alkanolamine, and polyamine. Methods may include drilling a wellbore with an oil-based mud, wherein the oil-based mud is an invert emulsion containing an emulsifier stabilizing the invert emulsion, wherein the emulsifier is the product of a reaction between an alkyl cyclic anhydride and a polar reactant, wherein the polar reactant is one or more selected from the group of alkyl amine, alkanolamine, and polyamine.

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Patent Owner(s)

  • DOWELL -- A DIVISION OF SCHLUMBERGER TECHNOLOGY CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yiyan Sugar Land, US 99 1826
Karoum, Reda Houston, US 15 42
Khramov, Dimitri M Katy, US 15 21

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