James E Pennington
General Contractor in Salt Lake City, UT
License number
Utah 230565-5501
Issued Date
Jan 1, 1911
Expiration Date
Jul 31, 2003
Category
Contractor
Type
Contractor With LRF
Address
Address
Salt Lake City, UT
Professional information
In Situ Method Of Processing Bituminous Coal
US Patent:
4230181, Oct 28, 1980
Filed:
Aug 31, 1978
Appl. No.:
5/938420
Inventors:
James R. Pennington - Salt Lake City UT
International Classification:
E21B 4324, E21B 4325
US Classification:
166259
Abstract:
Bituminous coal is processed in situ for the recovery of values therefrom by drilling at least one borehole into the underground deposit, introducing a solvent for inclusions of resinous and other uncarbonized vegetable matter present in the coal, which solvent may or may not also be effective in some degree to dissolve carbonaceous matter, removing the solvent pregnant with the dissolved matter, so as to leave a substantially permeable area of coal in the deposit at and adjacent to the end of the borehole, igniting the coal at the end of the borehole, and removing products of combustion from the permeablized area while introducing a combustion-supporting gas into the area for advancing a heat front through the permeablized area.