Wellbore fluids including emulsifiers, and related methods
AssigneeSchlumberger Technology Corporation
InventorsDimitri Khramov, Evgeny Barmatov
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Abstract
A drilling fluid wellbore fluid includes an oleaginous base fluid, and an emulsifier including a reaction product of an amide and a sultone. The amide may include a bis-amide, an imidazoline-amide, or a mixture including the bis-amide and the imidazoline-amide. The bis-amide may include a reaction product of one or more fatty acids and one or more sultones. The imidazoline-amide may include a condensation product of the bis-amide. Related methods of forming the emulsifier and using the emulsifier in a wellbore fluid while drilling an earth formation are also disclosed.
Claims6
A method of forming an emulsifier for a wellbore fluid, the method comprising:
- reacting a polyalkylamine with a fatty acid to form at least one of a bis-amide or an imidazoline-amide;
- and
- reacting the at least one of the bis-amide or the imidazoline-amide with a sultone to form an emulsifier.
Dependencies are inferred from the claim text.