LandOfFree - US Patents - Listing for Wells,With heating, refrigerating or heat insulating means

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

Standoff insulator and method for well pump cable

Wells – With heating – refrigerating or heat insulating means

Storage of radioactive material

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

Subsurface radiating dipole

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

Subterranean antenna cooling system

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

Subterranean heaters

Wells – With heating – refrigerating or heat insulating means

System for cyclic injection and production from a well

Wells – With heating – refrigerating or heat insulating means

System for extracting natural gas hydrate

Wells – With heating – refrigerating or heat insulating means – Heater surrounding production tube

System for power supply to subsea installations

Wells – With heating – refrigerating or heat insulating means

System for providing RF energy into a hydrocarbon stratum

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

System for pumping viscous fluid from a well

Wells – With heating – refrigerating or heat insulating means – Heater surrounding production tube

System for recovering viscous petroleum from thick tar sand

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

System intended for permanent installation of measuring...