Gelled hydrocarbon system and method with dual-function...

Details Gelled hydrocarbon system and method with dual-function... Gelled hydrocarbon system and method with dual-function...

C - Chemistry, Metallurgy

09

K

C09K 8/70 (2006.01) E21B 43/22 (2006.01) E21B 43/27 (2006.01)

Patent

CA 2719177

A gelled organic-based fluid system and method of forming and using the system. The fluid system is prepared by gelling an organic solvent, a viscoelastic surfactant, and a nitrogen compound having a free electron pair such as urea in an amount effective to both increase viscosity and increase a rate of breaking the viscosity, relative to the gelled system without the nitrogen compound. In a further aspect, the method is used to treat a well penetrating a subterranean formation, for example, in a coiled tubing cleanout, or the like.

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