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A CO.sub.2 drive process for oil recovery employing an alcohol e

Wells – Processes – Distinct – separate injection and producing wells
Patent

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A hydraulic remotely-controlled bleeder valve for a well head

Wells – Above ground apparatus – Well caps or casing heads
Patent

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Abandoning offshore well

Wells – Submerged well – With provision for disassembly
Patent

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Abandonment and retrieval apparatus and method

Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate

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Abandonment of sub-sea wells

Wells – Submerged well – With safety or emergency shutoff
Patent

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Above ground--below ground pump apparatus

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

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Above packer perforate test and sample tool and method of use

Wells – Processes – Sampling well fluid
Patent

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Above packer perforate, test and sample tool and method of use

Wells – Processes – Sampling well fluid
Patent

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Above production disposal tool

Wells – With eduction pump or plunger – With packer or plug
Patent

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Abrasion resistant frac head

Wells – Above ground apparatus – With means for inserting fluid into well
Reexamination Certificate

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Abrasive jet cutting system and method for cutting wellbore...

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

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Abrasive slurry delivery apparatus and methods of using same

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Abrasive slurry delivery apparatus and methods of using same

Wells – Processes – Graveling or filter forming
Patent

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Abrasives for well cleaning

Wells – Processes – Cleaning or unloading well
Patent

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Accelerated downhole pressure testing

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

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Accelerated downhole pressure testing

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

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Accelerated polymer gelation process for oil recovery applicatio

Wells – Processes – Cementing – plugging or consolidating
Patent

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Accelerating set of retarded cement

Wells – Processes – Cementing – plugging or consolidating
Patent

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Accelerating set of retarded cement

Wells – Processes – Cementing – plugging or consolidating
Patent

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Access control between a main bore and a lateral bore in a...

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

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