Method and apparatus for heating a wellbore
Method and apparatus for subterranean thermal conditioning
Method and apparatus for treating subsurface boreholes
Method and system for introducing electric current into a well
Mineral well heating systems
Oil recovery well paraffin elimination means
Parallel heater system for subsurface formations
Portable down hole tool
Power sources for downhole electrical heating
Production in frigid environments
Protective device for RF applicator in in-situ oil shale retorti
Standoff insulator and method for well pump cable
Subsurface radiating dipole
Subterranean antenna cooling system
Subterranean heaters
System for pumping viscous fluid from a well
System intended for permanent installation of measuring...
Temperature limited heaters using modulated DC power
Temperature limited heaters with thermally conductive fluid...
Vacuum method for removing soil contaminants utilizing thermal c