Method of improving premeability of fines-containing hydrocarbon

Details Method of improving premeability of fines-containing hydrocarbon Method of improving premeability of fines-containing hydrocarbon

1990-09-13

1991-10-22

Suchfield, George A.

Wells

Processes

Heating, cooling or insulating

E21B 4324

Patent

active

050586815

ABSTRACT:
A method is disclosed for improving the effectiveness of fluid transport in a fines-containing earthen formation and inhibiting permeability damage of that formation. Wet steam is generated from a feedwater that contains potassium chloride, enough anhydrous ammonia is added into the steam to produce sufficient ammonium ions in the vapor phase condensate to inhibit permeability damage of the formation in the vicinity of the vapor phase, enough carbon dioxide is added into the steam effective to the pH of the vapor phase condensate between 7.5 and 10.5, the wet steam is injected into the formation, and then the steam is blown down to vaporize liquid water of the formation and cause the vaporized water to leave the portion.

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patent: 4574886 (1986-03-01), Hopkins et al.
patent: 4714112 (1987-12-01), Nigrini et al.
patent: 4719972 (1988-01-01), Hsueh
patent: 4903769 (1990-02-01), Hsueh et al.
patent: 4913236 (1990-04-01), Reed

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