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1. (WO2013126138) A DRILLING FLUID CONTAINING A SURFACTANT HAVING A HIGH BOILING POINT AND A LONG CHAIN TAIL GROUP AND A METHOD OF USING THE FLUID

Pub. No.:    WO/2013/126138    International Application No.:    PCT/US2012/071536
Publication Date: Fri Aug 30 01:59:59 CEST 2013 International Filing Date: Sun Dec 23 00:59:59 CET 2012
IPC: C09K 8/36
C09K 8/42
C09K 8/502
B01F 17/00
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: FISK, JR, James, V.
Title: A DRILLING FLUID CONTAINING A SURFACTANT HAVING A HIGH BOILING POINT AND A LONG CHAIN TAIL GROUP AND A METHOD OF USING THE FLUID
Abstract:
According to an embodiment, an invert emulsion drilling fluid comprises : an external phase, wherein the external phase of the drilling fluid comprises a hydrocarbon liquid; an internal phase, wherein the internal phase of the drilling fluid comprises water; and a surfactant, wherein the surfactant: (A) comprises a hydrophobic tail group having a carbon chain length greater than or equal to 16; (B) has a boiling point greater than or equal to 400 °F (204.4°C); and (C) is in at least a sufficient concentration such that the surfactant spontaneously forms reverse-micelles. According to another embodiment, a method of using the invert emulsion drilling fluid comprises: introducing the drilling fluid into a well.