Patent ID: 9580642
Date: 2017-02-28
CPC Classifications: C09K,E21B

Claim:
1. A method of building a plug in a horizontal wellbore which penetrates a subterranean formation, the method comprising: (a) pumping a fluid pill into the wellbore wherein the fluid pill comprises a suspended well treatment composite, the well treatment composite comprising a core having a dissolvable diverter and a deformable particulate, a viscosifying agent and a crosslinking agent, wherein the viscosifying agent and crosslinking agent are coated onto the core; (b) disassociating at least a portion of the dissolvable diverter from the core of the well treatment composite and rendering a modified fluid pill comprising the deformable particulate and viscosifying polymer and crosslinking agent coated onto the deformable particulate; (c) blocking at least a portion of a high permeability zone of a subterranean formation with the disassociated dissolvable diverter; (d) diverting the flow of the modified fluid pill from a high permeability zone to a lower permeability zone of a subterranean formation; (e) allowing at least one fracture in the lower permeability zone of the subterranean formation to partially close; (f) at least partially preventing the deformable particulate from entering the at least one fracture by forming a thickened gel containing the deformable particulate, wherein the thickened gel is formed by the in-situ reaction of: (g) forming a fluid-impermeable plug with the thickened gel containing the deformable particulate.