4. Wells
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Wellhead stabilizing member with deflecting ribs

Wells – Submerged well – Wellhead
Patent

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Wellhead structure

Wells – Central chamber sealed with respect to prepositioned...
Patent

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Wellhead stuffing box for polished rod and accessories for same

Wells – Above ground apparatus – Having retractable pipe section to allow closing of gate...
Patent

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Wellhead stuffing box for polished rod and accessories for same

Wells – Above ground apparatus – With seal for reciprocating member
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Wellhead stuffing box for rotating rod string

Wells – Above ground apparatus – With seal for reciprocating member
Patent

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Wellhead stuffing box support assembly

Wells – Above ground apparatus – With seal for reciprocating member
Reexamination Certificate

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Wellhead supported subsea templates and methods

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

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Wellhead system

Wells – Packers or plugs – Deformable portion engages conduit restriction
Patent

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Wellhead system

Wells – Expansible anchor or casing – Liner hanger
Patent

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Wellhead system and method for use in drilling a subsea well

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

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Wellhead system comprising a sliding sleeve seal

Wells – Submerged well – Wellhead
Reexamination Certificate

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Wellhead system for exploratory wells

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

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Wellhead tubing and casing packer and installation and removal t

Wells – Above ground apparatus – Moving tubing or cable into an existing well
Patent

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Wellhead tubing rotator

Wells – Above ground apparatus – With tube rotating means
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Wellhead union with safety interlock

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

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Wellhead union with safety interlock

Wells – Processes – Assembling well part
Patent

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Wellhead valve

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

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Wellhead valve removal and installation tool

Wells – Above ground apparatus – Having retractable pipe section to allow closing of gate...
Patent

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Wellhead valves

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

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Wellhead with eccentric casing seal ring

Wells – Processes – Assembling well part
Patent

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