Conditioning a coal seam prior to in-situ gasification

Details Conditioning a coal seam prior to in-situ gasification Conditioning a coal seam prior to in-situ gasification

1981-08-25

1983-07-19

Purser, Ernest R.

Wells

Processes

In situ combustion

166256, 299 2, 252 855D, E21B 4324

Patent

active

043939341

ABSTRACT:
A method for conditioning a coal seam prior to in-situ gasification to increase the permeability of the coal seam to the flow of combustion-supporting gas therethrough and thus increase the efficiency of gasification wherein a wettability alteration fluid is injected into the coal seam via an injection well and fluids including the wettability alteration fluid are recovered from a spaced apart production well. Injection of the wettability alteration fluid is continued into the coal seam until the permeability thereof to the flow of the combustion-supporting gas therethrough has increased to a maximum extent. Suitable wettability alteration fluids include carbon dioxide, volatile amines, aqueous solutions containing phosphates, phenols, flue gas and alcohols, and mixtures thereof.

REFERENCES:
patent: 3032103 (1962-05-01), Parker
patent: 4015663 (1977-04-01), Strubhar
patent: 4026357 (1977-05-01), Redford
patent: 4087130 (1978-05-01), Garrett
patent: 4114688 (1978-09-01), Terry
patent: 4197911 (1980-04-01), Anada
patent: 4303127 (1981-12-01), Freel et al.
patent: 4313499 (1982-02-01), Tsai et al.
"Applications of Reservoir Simulation to In Situ Coal Gasification," Mar. 1980, Department of Energy Contract No. DE-AC04-76DP00789, R. E. Glass.
"Permeability Characteristics of Coal Seam," Proceedings of the Third Annual Underground Coal Conversion Symposium, Fallen Leaf Lake, Calif., Jun. 6-9, 1977, pp. 454-465, Lien et al.
"Underground Therma Generation of Hydrocarbons from Dry, Southwestern Coals," Proceedings of the 13th Intersociety Energy Conversion Engineering Conference, Aug. 20-25, 1978, pp. 366-372, San Diego, Calif., Vanderborgh et al.
"The Measurement of the Flow Properties of Coals for In-Situ Gasification," Jan. 1979, University of Pittsburgh, Prepared for Department of Energy under Contract No. ET 78-S-O-Z4639, Reznik et al.

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