Completion fluid friction reducer

Abstract

A method and composition for reducing a coefficient of friction are disclosed. In an embodiment, a method for reducing a coefficient of friction between two surfaces in a borehole includes preparing a mixture comprising a primary lubricating agent, a primary surfactant, a spreading agent, and an aqueous fluid. The method also includes pumping the mixture into the borehole such that the mixture contacts the two surfaces and reduces the coefficient of friction for the two surfaces.

What is claimed is: 
     
         1 . A pumpable friction reducing fluid composition comprising:
 a primary lubricating agent;   a primary surfactant;   a spreading agent; and   an aqueous fluid.   
     
     
         2 . The composition of  claim 1 , wherein the primary lubricating agent comprises a tall oil fatty acid, a tallow fatty acid, or a combination thereof. 
     
     
         3 . The composition of  claim 1 , wherein the primary lubricating agent comprises palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, myristic acid, linolenic acid, or a combination thereof. 
     
     
         4 . The composition of  claim 1 , wherein the primary surfactant comprises a nonionic surfactant comprising a hydrophile/lipophile balance between 9 to 14 and a molecular weight in a range of about 200 to about 600. 
     
     
         5 . The composition of  claim 1 , wherein the primary surfactant comprises a poly(ethylene glycol) monooleate, poly(ethylene glycol) dioleate, poly(ethylene glycol) monolaurate, poly(ethylene glycol) dilaurate, or a combination thereof. 
     
     
         6 . The composition of  claim 1 , wherein the spreading agent comprises a transesterified lipid. 
     
     
         7 . The composition of  claim 1 , wherein the spreading agent comprises methyl canolate, methyl caprate, methyl caprylate, methyl coconate, methyl lardate, methyl laurate, methyl myristate, methyl oleate, methyl palm kernelate, methyl palmitate, methyl soyate, methyl stearate, methyl tallowate, or a combination thereof.