LandOfFree - US Patents - Listing for Wells

Wells – With explosive or gas generating means in well

Annular shaped power charge for subsurface well devices

Wells – Processes – Placing or shifting well part

Annular wellhead seal

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

Annulus access valve system

Wells – Processes – Cementing – plugging or consolidating

Annulus cementing and washout systems for wells

Wells – Submerged well – Testing

Annulus check valve with tubing plug back-up

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

Annulus fluid pressure operated testing valve

Wells – Processes – Heating – cooling or insulating

Annulus for electrically heated pipe-in-pipe subsea pipeline

Wells – Valves – closures or changeable restrictors – Fluid operated

Annulus operated test valve

Wells – Processes – Placing or shifting well part

Annulus plugging

Wells – Submerged well – Wellhead

Annulus porting of horizontal tree

Wells – Processes – Placing or shifting well part

Annulus pressure actuated casing hanger running tool

Wells – Submerged well – Connection or disconnection of submerged members remotely...

Annulus pressure control system for subsea wells

Wells – Valves – closures or changeable restrictors – Fluid operated

Annulus pressure controlled reversing valve

Wells – Valves – closures or changeable restrictors – Fluid operated

Annulus pressure controlled test valve with locking annulus pres

Wells – Valves – closures or changeable restrictors – Destructible element

Annulus pressure operated closure valve with improved power mand

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

Annulus pressure operated closure valve with improved reverse ci

Annulus pressure operated closure valve with reverse circulation

Wells – Receptacles

Wells – Processes – Sampling well fluid

Annulus pressure operated downhole choke and associated methods

Wells – Valves – closures or changeable restrictors – Destructible element

Annulus pressure operated downhole choke and associated methods