LandOfFree - US Patents - Listing for Wells,Valves, closures or changeable restrictors,Longitudinally movable operator

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

Instrumentation for a downhole deployment valve

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

Metal-to-metal non-elastomeric seal stack

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

Metal-to-metal sliding side door for wells

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

Method and apparatus for cementing a well

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

Method and apparatus for stimulating hydrocarbon wells

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

Multi-cycle downhole apparatus

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

Multi-cycle downhole apparatus

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

Multi-function indicating tool

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

Multi-position valve for fracturing and sand control and...

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

Oil well testing apparatus

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

Oil well testing safety valve

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

Oilwell tubing tester with trapped valve seal

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

One trip flow tube exercising tool

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

One trip flow tube exercising tool

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

Open hole pipe recovery circulation valve

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

Packer annulus differential pressure valve

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

Pass through valve and stab tool

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

Polished bore receptacle

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

Port apparatus for well piping