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Arrangement for driving out of volatile impurities from ground w

Wells – With below and above ground modification
Patent

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Arrangement for driving volatile impurities from ground water

Wells – With below and above ground modification
Patent

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Arrangement used in oil field wells for lifting hydrocarbons

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Artificial lifting system

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Ball catcher

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Ball valve type injector and catcher apparatus with adjustable f

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Bearing assembly for a progressive cavity pump and system...

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Blind shaft drilling

Wells – With below and above ground modification – With receptacle for insertion into well
Patent

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Blowout preventer for use in combination with a deep well pump

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Borehole sucker-rod pumping plant for pumping out gas liquid...

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Borehole water pumping system with sandtrap

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Bottom valve tripping and liquid channeling device for an automa

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Buoyant water pump system

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Bypass valve for gas lift plunger

Wells – With below and above ground modification – Eduction pump or plunger in well
Reexamination Certificate

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Cable-based pumping system

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Cementing head

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Cementing plug container with remote control system

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Cementing system

Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent

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Centrifugal backspin retarder and drivehead for use therewith

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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Chain long-stroke oil-well pumping unit

Wells – With below and above ground modification – Eduction pump or plunger in well
Patent

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