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Coring tubular and method for reducing contamination and...

Boring or penetrating the earth – Processes – Sampling of earth formations
Reexamination Certificate

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Coring tubular and method for reducing contamination and...

Boring or penetrating the earth – Processes – Sampling of earth formations
Reexamination Certificate

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Coring with tubing run tools from a producing well

Boring or penetrating the earth – Processes – Sampling of earth formations
Patent

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Crane-mounted drill and method for in-situ treatment of contamin

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Cutter structure for shield machine

Boring or penetrating the earth – Processes – Boring horizontal bores
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Cutter, a stopper means and a method of preventing mud from ente

Boring or penetrating the earth – Processes
Patent

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Cuttings disposal system

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Cuttings tank apparatus

Boring or penetrating the earth – Processes – Boring with specific fluid
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