"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
|7322415||Subterranean electro-thermal heating system and method|
A subterranean electro-thermal heating system including one or more heater cable sections extending through one or more heat target regions of a subterranean environment and one or more cold lead sections coupled to the heater cable section(s) and extending through ...
|5907662||Electrode wells for powerline-frequency electrical heating of soils|
An electrode well for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of ...
|5829519||Subterranean antenna cooling system|
The present invention provides a system for cooling antenna assemblies, such as subterranean RF antennas used to heat geological formations. The invention generally includes a radio frequency (RF) generator, a waveguide operatively connected to the RF gen...
|5619611||Device for removing downhole deposits utilizing tubular housing and passing electric current through fluid heating medium contained therein|
A device for removing deposits such as asphalt, hydrates, and paraffins from petroleum and natural gas production strings and pipelines include a tubular housing divided into a heating section at a forward end and a ballast section at a rear end, the heat...
|5539853||Downhole heating system with separate wiring cooling and heating chambers and gas flow therethrough|
An electric downhole heating system for formation heat treatment in the field of oil and gas production contains a separate wiring chamber, heating chamber, and cooling chamber, the latter being inserted between the wiring chamber and the heating chamber....
|5126037||Geopreater heating method and apparatus|
A separate heat source, such an a skin effect heater, is added to a subterranean heat exchanger and oxygen combustion device for upgrading viscous crude oil feeds. An insulated wire is integrated with combustion oxygen supply piping to form the skin effec...