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

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

Flapper type safety valve for subterranean wells

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

Flapper valve assembly with floating hinge

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

Flapper valve with biasing flapper closure assembly

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

Float collar

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

Flow control apparatus for use in a subterranean well and associ

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

Flow control apparatus with specific latching means for use in a

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

Flow control device

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

Flow control device

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

Flow control device

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

Flow control in a well bore

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

Flow tube exercising tool

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

Flow-actuated actuator and method

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

Fluid control valve

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

Fluid flow switching device

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

Fluid injection tubing assembly and method

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

Frac gate and well completion methods

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

Gravel packing tool

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

Incremental annular choke

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

Injection control device for subterranean well conduit