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

Multi-mode well tool with hydraulic bypass assembly

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

Multi-positioned sliding sleeve valve

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

Multi-zone completion strings and methods for multi-zone...

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

Multiple ball launch assemblies and methods of launching...

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

Multiple line hydraulic system flush valve and method of use

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

Multiple-set downhole tool and method

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

Multiplier digital-hydraulic well control system and method

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

Optical position sensing for well control tools

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

Overriding a primary control subsystem of a downhole tool

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

Pack-off system

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

Packer set safety valve for controlling dual fluid flows

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

Perforating type lockout tool

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

Petroleum well having downhole sensors, communication and power

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

Phase-controlled well flow control and associated methods

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

Plunger arrival target time adjustment method using both A and B

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

Positioning and conveying well apparatus and method

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

Pressure balanced piston for subsurface safety valves

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

Pressure change signals for remote control of downhole tools

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

Pressure change signals for remote control of downhole tools