LandOfFree - US Patents - Listing for Wells,Pistons, fluid driven into well

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Cementing apparatus

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

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Cementing collar and method of operation

Wells – Pistons – fluid driven into well – Surrounding conduit valve or closure opened by piston

Patent

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Cementing plug

Wells – Pistons – fluid driven into well

Patent

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Cementing plug

Wells – Pistons – fluid driven into well

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Cementing plug

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Cementing plug

Wells – Pistons – fluid driven into well – With stop

Patent

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Cementing plug

Wells – Pistons – fluid driven into well

Reexamination Certificate

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Cementing plug launching apparatus

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

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Cementing systems for wellbores

Wells – Pistons – fluid driven into well – With downflow past piston

Patent

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Circumferential centralizer

Wells – Pistons – fluid driven into well

Patent

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Composite landing collar for cementing operation

Wells – Pistons – fluid driven into well – With stop

Reexamination Certificate

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Compressible darts and methods for using these darts in...

Wells – Pistons – fluid driven into well

Reexamination Certificate

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Control of `U` tubing in the flow of cement in oil well casings

Wells – Pistons – fluid driven into well

Patent

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Coupling for releasing tubing strings from downhole tools

Wells – Pistons – fluid driven into well – With stop

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

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