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Underreamer with simultaneously expandable cutter blades and met

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

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Undulating well bore

Wells – Processes – Parallel string or multiple completion well
Reexamination Certificate

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Unidirectional filter for hydraulic systems

Wells – Processes – With indicating – testing – measuring or locating
Patent

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Unique method of hydraulic fracturing

Wells – Processes – In situ combustion
Patent

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Universal downhole tool control apparatus and methods

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

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Universal flexbowl wellhead and well completion method

Wells – Processes – Placing or shifting well part
Patent

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Universal fluids for drilling and cementing wells

Wells – Processes – Cementing – plugging or consolidating
Patent

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Universal pipe and tubing injection apparatus and method

Wells – Processes – Placing or shifting well part
Patent

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Universal pipe and tubing injection apparatus and method

Wells – Processes – Placing or shifting well part
Patent

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Universal pipe and tubing injection apparatus and method

Wells – Processes – Placing or shifting well part
Patent

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Universal pipe and tubing injection apparatus and method

Wells – Processes – Placing or shifting well part
Patent

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Universal rig with vertical stand for tubulars

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Universal top-drive wireline entry system bracket and method

Wells – Processes – Assembling well part
Reexamination Certificate

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Universal washdown system for gravel packing and fracturing

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Unlocking packer setting method and device

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Unplugging brine-submerged perforations

Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent

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Upgrading and recovery of heavy crude oils and natural bitumens

Wells – Processes – In situ combustion
Patent

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Upgrading and recovery of heavy crude oils and natural...

Wells – Processes – In situ combustion
Reexamination Certificate

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Uphole disposal tool for water producing gas wells

Wells – Processes – Producing the well
Patent

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Upward movement only actuated gravel pack system

Wells – Processes – Graveling or filter forming
Patent

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