LandOfFree - US Patents - Listing for Wells,Processes,Operating valve, closure, or changeable restrictor in a well

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

Debris-free valve apparatus and method of use

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

Deep set safety valve

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

Deep set safety valve

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

Deep set safety valve

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

Deep set safety valve

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

Deep well pipe water release valve

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

Deep-set subsurface safety valve assembly

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

Deviated borehole drilling assembly

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

Device and method for regulating fluid flow in a well

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

Differential flow control valve

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

Differential pressure test/bypass valve and method for using the

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

Direct connecting downhole control system

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

Direct proportional surface control system for downhole choke

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

Double-pin radial flow valve

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

Down-hole tools

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

Downhole activated circulating sub

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

Downhole actuator, and a flow rate adjuster device using...

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

Downhole apparatus

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

Downhole backup system and method