Method to decrease viscosity of gelled oil

Details Method to decrease viscosity of gelled oil Method to decrease viscosity of gelled oil

C - Chemistry, Metallurgy

09

K

C09K 8/64 (2006.01) B01D 17/05 (2006.01) B01J 13/00 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2735455

A method of decreasing the viscosity of a gelled organic-based fluid is disclosed. The method comprises combining an organic solvent, a gelling agent, and a metal crosslinker; forming the gelled organic-based fluid; and adding a chelating agent forming a complex with the metal to decrease the viscosity of the gelled organic-based fluid. The chelating agent may be chosen within nitrilotriacetic acid (NTA), citric acid; ascorbic acid, hydroxyethylethylenediaminetriacetic acid (HEDTA) or its salts, ethylenediaminetetraacetic acid (EDTA) or its salts, diethylenetriaminepentaacetic acid (DTPA) or its salts, phosphinopolyacrylate, thioglycolates, or a combination thereof.

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