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Class Information
Number: 175/12
Name: Boring or penetrating the earth > Boring by directly applying heat to fluidize or comminute > Combustion of the formation material
Description: Subject matter in which material comprising the in situ formation is disclosed as entering into an exothermic chemical reaction.

Patents under this class:

Patent Number Title Of Patent Date Issued
8205947 Method of breaking brittle solids Jun. 26, 2012
7938175 Drilling, perforating and formation analysis May. 10, 2011
7841425 Drilling subsurface wellbores with cutting structures Nov. 30, 2010
7490664 Drilling, perforating and formation analysis Feb. 17, 2009
7086484 Determination of thermal properties of a formation Aug. 8, 2006
6880646 Laser wellbore completion apparatus and method Apr. 19, 2005
4491367 Method for subterranean generation of heat as a source of energy Jan. 1, 1985
4304308 Burner apparatus for making holes in coal seams Dec. 8, 1981
4301875 Method for making holes and producing gas in coal seams Nov. 24, 1981
4227582 Well perforating apparatus and method Oct. 14, 1980
4168752 Flexible conduit for effecting lateral channelling in coal or oil shale beds Sep. 25, 1979
3990835 Burner for igniting oil shale retort Nov. 9, 1976

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