Patent ID: 8196660
Filing Date: 2012-06-12
Classification: C09K,E21B,Y10S

Abstract:
1. A method for the in-situ treatment of stimulation fluids comprising the steps of: (a) constructing a well in the earth comprising a wellbore and a first conduit inserted inside said wellbore, said first conduit forming a fluid path from a location at or above surface to at least one subterranean reservoir; (b) inserting a second conduit inside said wellbore with a first end of said second conduit at or above the surface and a second end of said second conduit inside said wellbore at a point below the surface, said second conduit and said first conduit in fluid communication with one another at a mixing point below the surface; (c) simultaneously injecting a first fluid into said first conduit at the surface and into a subterranean environment, said first fluid comprising a stimulation fluid; (d) injecting a second fluid into said second conduit at the surface and into a subterranean environment to cause mixing of said second fluid with said first fluid at, or downstream from, said mixing point, said second fluid comprising a fluid that modifies the viscosity of said stimulation fluid; wherein said wellbore is a wellbore having perforated intervals along its length; and (e) repositioning the first conduit, the second conduit, or both, relative to the perforated intervals of said wellbore, the step of repositioning the first conduit, the second conduit, or both, relative to the perforated intervals of said wellbore occurs while injecting fluid into said well.