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Top: Business: Energy: Oil_and_Gas: Tools_and_Equipment: Downhole

Companies that primarily provide drill pipe and casing could be submitted to the Tubulars category.

Companies that provide equipment that is used in wellbore below the casing head. Includes logging instruments, bridge plugs, drill bits, mud motors, etc.

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Last update: 20:13 PT, Monday, October 30, 2006 - edit