Method of producing synthesis gas by underground gasification of

Details Method of producing synthesis gas by underground gasification of Method of producing synthesis gas by underground gasification of

1985-11-27

1987-03-10

Suchfield, George A.

Wells

Processes

In situ combustion

166251261, 48DIG6, C10B 5720, E21B 43243

Patent

active

046484507

ABSTRACT:
Underground coal gasification process containing a novel system of injection and production wells. Specifically, the injection well is positioned at an angle with respect to horizontal of less than the angle of repose of loose coal and char for the particular coal seam, and the production well is positioned at an angle with respect to horizontal of greater than the angle of repose but less than 90.degree.. This system protects the injection well during the process and places the production well in a position for maximum production while relieving it of certain tensile and shear stresses.

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Olness, The Angrenskaya Underground Coal Gasification Station, UCRL-53300, Lawrence Livermore Laboratory, University of California at Livermore, Jun. 17, 1982.

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