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Method for controlling the flow of fluid between a downhole...

Wells – Packers or plugs – Flow stopping type; e.g. – plug
Reexamination Certificate

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Methods and apparatus for field blasting of earth formations usi

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Methods and apparatus for field blasting of earth formations usi

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Methods and apparatus for injecting fluids at a subterranean...

Wells – Packers or plugs – Spaced sealing portions
Reexamination Certificate

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Multi-stage maintenance device for subterranean well tool

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Reexamination Certificate

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Multi-string packers

Wells – Packers or plugs – With expanding anchor
Patent

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Multiple stage cementer and casing inflation packer

Wells – Packers or plugs – With controllable passage between central chamber and space...
Patent

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Multiple stage inflation packer with secondary opening rupture d

Wells – Packers or plugs – With controllable passage between central conduit and space...
Patent

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Multiple string well packer

Wells – Packers or plugs – With expanding anchor
Patent

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Multiple string well packer

Wells – Packers or plugs – With expanding anchor
Patent

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Multiple use well packer

Wells – Packers or plugs – With expanding anchor
Patent

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Multiple-completion packer and locking element therefor

Wells – Packers or plugs – With expanding anchor
Patent

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