4. Wells
  5. With jar means for releasing stuck part

Shunfeng Zheng

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Distributed control system

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Method and apparatus to vibrate a downhole component

Wells – Processes – Vibrating the earth or material in or being placed in the...
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Method and apparatus to vibrate a downhole component

Wells – Vibrator
Reexamination Certificate

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Method and apparatus to vibrate a downhole component

Wells – With jar means for releasing stuck part
Reexamination Certificate

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Offshore coiled tubing heave compensation control system

Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2664320

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