IN-SITU EMULSION POLYMERIZATION OF POLYETHYLENE DERIVATIVES

摘要

F-5846 A profile control method for closing off a more permeable zone of a formation where water, high fluid flow, or high pressures are encountered. A water-external emulsion containing a monomer, a cross-linker, free radical initiators and reaction inhibitors is injected into the formation. There they react to form plastic-like solid spheres in the more permeable formation zone. Because the spheres are not water soluble and have high compressive strength, they can be used in severe flow applications. Ethylene, propylene and styrene monomers, for example, can be utilized to form solid spheres of polyethylene, polypropylene or polystyrene.