1
Patrick H Hess: Method for delaying the setting of an acid-settable liquid in a terrestrial zone. Chevron Research Company, J A Buchanan Jr, John Stoner Jr, W Keith Turner, April 5, 1977: US04015995 (64 worldwide citation)

In an improved method for the treatment of a permeable formation or zone adjacent to the bore of an oil well, the setting time of an acid-settable liquid is predictably delayed by use of a novel catalyst system. The method provides an effective means for controlling the reduction of the permeability ...


2
Patrick H Hess: Selective permeability reduction with polymerizable monomers around steam injection wells. Chevron Research Company, R L Freeland Jr, G W Wasson, February 17, 1981: US04250963 (9 worldwide citation)

A method is proposed for treating subsurface earth formations in the neighborhood of a steam injection well by selectively altering the effective permeability of the formation through depositing a monomer within the formation where the permeability is to be controlled and the eventual polymerization ...


3
Patrick H Hess: Method for delaying the setting of and acid-settable liquid in a terrestrial zone. Chevron Research Company, G F Magdeburger, John Stoner Jr, W Keith Turner, March 9, 1976: US03943084 (7 worldwide citation)

In an improved method for the treatment of a permeable formation or zone adjacent to the bore of an oil well, the setting time of an acid-settable liquid is predictably delayed by use of a novel catalyst system. The method provides an effective means for controlling the reduction of the permeability ...


4