|
US3374837A
|
|
Retrievable packer
|
|
US3045755A
|
|
Valved production packer
|
|
US3035641A
|
|
Down tubing self-closing flow control valve
|
|
US3065794A
|
|
Retrievable well flow control valve
|
|
US3035642A
|
|
Apparatus for controlling the flow of production fluid from a well
|
|
US3050132A
|
|
Fluid pressure operated shut-off valve for wells
|
|
US3065793A
|
|
Apparatus for shutting off wells
|
|
US3016955A
|
|
Fluid pressure actuated well shut-off valve
|
|
US2881841A
|
|
Hydraulically boosted anchor for wells
|
|
US2925128A
|
|
Hydraulic tubing anchor for wells
|
|
GB734662A
|
|
Anchor for well drilling equipment
|
|
US2741315A
|
|
Anchor for use in wells
|
|
US2671682A
|
|
Sucker rod coupling
|
|
US2698058A
|
|
Tubing anchor
|
|
US2689710A
|
|
Torque drive for the drill stem of a rotary drilling outfit
|
|
US2717004A
|
|
Multiple valve
|
|
US2695623A
|
|
Flow control for fluid handling lines
|
|
US2606618A
|
|
Well packer
|
|
US2509363A
|
|
Joint for pipe sections or the like
|
|
US2658459A
|
|
Anchor for well equipment
|
