4. Wells
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Annulus pressure operated ratchet device

Wells – Packers or plugs – With detachable setting means
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus pressure operated vent assembly

Wells – Means for perforating – weakening – bending or separating pipe... – With disparate below ground feature
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus pressure operated vent assembly

Wells – Means for perforating – weakening – bending or separating pipe... – With disparate below ground feature
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus pressure referenced circulating valve

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus safety apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus safety valve

Wells – Processes – Placing or shifting well part
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus safety valve

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus safety valve

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus shut-off mechanism

Wells – Submerged well – With safety or emergency shutoff
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus shutoff device for a subsea well

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus sliding sleeve valve

Wells – Above ground apparatus – Inner member anchor or seal with valve
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus valve

Wells – Above ground apparatus – Inner member anchor or seal with valve
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Annulus valve for concentric tubing hangers

Wells – Above ground apparatus – Inner member anchor or seal with valve
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti blow-out control apparatus

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti gas-migration cementing

Wells – Processes – With indicating – testing – measuring or locating
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti rotational device for down hole hydraulic pumping unit

Wells – With below and above ground modification – Above ground actuating means for below ground device
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti-coning well intake

Wells – Processes – Producing the well
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti-extrusion apparatus and method

Wells – Processes – Placing or shifting well part
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti-extrusion device for downhole applications

Wells – Packers or plugs – With expanding anchor
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Anti-fouling covering for use in sub-sea structures

Wells – Submerged well – Means removably connected to permanent well structure
Patent

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