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Apparatus and method for retrieving lost materials in slanted bo

Wells – Processes – Cleaning or unloading well
Patent

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Apparatus and method for reverse circulation cementing a...

Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate

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Apparatus and method for reverse circulation cementing a...

Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate

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Apparatus and method for rotating coil tubing in a well

Wells – Processes – Placing or shifting well part
Patent

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Apparatus and method for routing a transmission line through...

Wells – Processes – Assembling well part
Reexamination Certificate

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Apparatus and method for sampling an earth formation through a c

Wells – Processes – Sampling well fluid
Patent

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Apparatus and method for sealing perforated well casing

Wells – Processes – Repairing object in well
Patent

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Apparatus and method for sealing well bores and bore holes

Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate

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Apparatus and method for selectively controlling fluid...

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate

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Apparatus and method for sensing downhole parameters

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Apparatus and method for sensing the profile and position of...

Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate

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Apparatus and method for separating gas and solids from well...

Wells – Processes – Separating material entering well
Reexamination Certificate

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Apparatus and method for separating oil, water and solids

Wells – Processes – Separating material entering well
Reexamination Certificate

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Apparatus and method for separating solid particles from liquids

Wells – Processes – Separating material entering well
Patent

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Apparatus and method for separating solid particles from liquids

Wells – Processes – Separating material entering well
Patent

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Apparatus and method for sequentially packing an interval of...

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Apparatus and method for setting a compression set packer

Wells – Processes – Placing or shifting well part
Patent

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Apparatus and method for severing pipe utilizing a...

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate

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Apparatus and method for snubbing tubing-conveyed perforating gu

Wells – Processes – Assembling well part
Patent

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Apparatus and method for solids removal from wellbores

Wells – Processes – Cleaning or unloading well
Patent

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