LandOfFree - US Patents - Listing for Wells

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Dual flapper safety valve

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Dual flapper valve assembly

Wells – Brushing – scraping – cutting or punching-type cleaners – Retractable on support while lowering

Dual function cleaning tool

Wells – Processes – Producing the well

Dual gearbox electric submersible pump assembly

Wells – Processes – Distinct – separate injection and producing wells

Dual gradient steam foam oil displacement process

Wells – Processes – Operating valve – closure – or changeable restrictor in a well

Dual hydraulic safety valve

Wells – Packers or plugs – With expanding anchor

Dual hydraulic set packer

Wells – Processes – Separating material entering well

Dual injection and lifting system using a rod driven progressive

Wells – Processes – Separating material entering well

Dual injection and lifting system using a rod driven progressive

Wells – Processes – Separating material entering well

Dual injection and lifting system using an electrical submersibl

Wells – Processes – Separating material entering well

Dual injection and lifting system using rod pump and an electric

Wells – Processes – Disassembling well part

Dual jacking system and method

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator

Dual metal seal for a well safety valve

Wells – Means for cutting cable or rope below ground

Dual mini well surface control system

Wells – Means for perforating – weakening – bending or separating pipe... – Cutter rotates circumferentially of pipe

Dual mode rotary cutting tool

Dual packer apparatus and method

Wells – Combined

Wells – Processes – Placing or shifting well part

Dual packer for a horizontal well

Wells – Processes – Sampling well fluid

Dual piston, single phase sampling mechanism and procedure

Wells – Processes – Sampling well fluid

Dual piston, single phase sampling mechanism and procedure