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

Actuatable subsurface safety valve and method

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

Alternative packer setting method

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

Annular choke

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

Annulus access valve system

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

Annulus fluid pressure operated testing valve

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

Annulus pressure operated closure valve with improved reverse ci

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

Annulus pressure referenced circulating valve

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

Annulus safety valve

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

Apparatus and method for blocking well perforations

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

Apparatus and method for controlling fluid flow in a wellbore

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

Apparatus and method for inflating packers in a drilling well

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

Apparatus and method for inserting and retrieving a tool...

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

Apparatus and method for locking open a flow control device

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

Apparatus and method for selectively controlling fluid...

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

Apparatus and method of stabilizing a flow along a wellbore

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

Apparatus and methods for achieving lock-out of a downhole tool

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

Apparatus and methods for utilizing a downhole deployment valve

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

Apparatus for changing flowbore fluid temperature

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

Apparatus for early evaluation formation testing