1
Thigpen Jr Arnold B: Method of treating subterranean formations to improve permeability. Texaco, Whaley T H, Reis C G, July 9, 1974: US3822749 (5 worldwide citation)

A method of treating wells drilled in the earth and the subterranean formation surrounding and in fluid communication with the wells by injecting into the wells and surrounding formation a gaseous mixture comprising steam and an aliphatic polyamine such as ethylenediamine, diethylenetriamine, trieth ...


2
Thigpen Jr Arnold B, Tate Jack F: Method of treating subterranean formations to improve permeability. Texaco, Whaley T H, Ries C G, April 30, 1974: US3807500 (4 worldwide citation)

A method for treating subterranean formations containing water sensitivity clays which have sustained permeability damage due to contact with fresh water, to increase the permeability of the subterranean formations, comprising injecting into the formation via wells drilled into such formations a sol ...


3
Thigpen Jr Arnold B: Permeability improvement technique. Texaco, March 12, 1974: US3796264 (3 worldwide citation)

A water sensitive subterranean fluid reservoir, a petroleum reservoir, for example, previously damaged by swelling due to contact with water is improved in permeability by treating the reservoir with potassium chloride at about 100.degree. C. for several hours.