4. Wells
  5. Submerged well
  6. Wellhead

Hans Paul Hopper

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Actuation module

Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Reexamination Certificate

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Apparatus for drilling an offshore underwater well

Wells – Submerged well – Wellhead
Reexamination Certificate

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Blow out preventer testing apparatus

Measuring and testing – Borehole or drilling – Pressure measurement
Reexamination Certificate

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Borehole equipment position detection system

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate

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Completion system

Wells – Submerged well – Wellhead
Patent

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Profile ID: LFUS-PAI-P-939216

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