LandOfFree - US Patents - Listing for Wells

Wells – Valves – closures or changeable restrictors – Fluid operated

Electric-hydraulic power unit

Wells – Valves – closures or changeable restrictors – Fluid operated

Electric-hydraulic power unit

Wells – Valves – closures or changeable restrictors – Fluid operated

Electric-hydraulic power unit

Wells – Above ground apparatus – Moving tubing or cable into an existing well

Electrical cable feeding and removing apparatus

Electrical cable for downhole applications

Electrical cased well-logging method

Electrical conductor arrangements for pipe system

Electrical connection device for an underwater well head

Wells – Means for perforating – weakening – bending or separating pipe...

Electrical control for a downhole system

Wells – With heating – refrigerating or heat insulating means – Electrical heater in well

Electrical device for promoting oil recovery

Electrical grounding device for wells

Wells – With heating – refrigerating or heat insulating means – Electrical heater in well

Electrical heater

Wells – With heating – refrigerating or heat insulating means – Electrical heater in well

Electrical heater

Wells – With eduction pump or plunger – With packer or plug

Electrical submersible pump actuated packer

Wells – Processes – Producing the well

Electrical submersible pump and gas compressor

Wells – Processes – With indicating – testing – measuring or locating

Electrical submersible pump and methods for enhanced...

Utility Patent

Wells – With eduction pump or plunger – Having sediment trap or deflector

Electrical submersible pump for lifting heavy oils

Wells – Processes – Producing the well

Electrical submersible pump with equally loaded thrust...

Electrical submersible pumps in the riser section of subsea...

Wells – Submerged well