Heated multiple solvent method for recovering viscous petroleum

Heater cable and method for manufacturing

Heater cable and method for manufacturing

Heater cable installation

Heater well method and apparatus

Heater well method and apparatus

Heating hydrocarbon containing formations in a checkerboard...

Heating hydrocarbon containing formations in a spiral...

Heating mine water for recovery of immobile hydrocarbons

Heating systems for heating subsurface formations

Heating tar sands formations to visbreaking temperatures

Heavy crude oil production tool and method

Heavy load carry slips and method

Heavy load carry slips and method

Heavy oil recovering

Heavy oil recovery

Heavy oil recovery by high velocity non-condensible gas injectio

Heavy oil recovery from deep formations

Heavy oil recovery process

Heavy oil recovery process