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Drill stem tools
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The Inside BOP

    The inside blowout preventer is the necessary tool in drilling operations . When the blowout is happened during drilling tools are coming out of hole , the inside blowout preventer is needed , because the drill pipes as much as possible shall be put into hole again.

Technical parameters and specifi cations

Thread connection O.D.(in) I.D.(in) Thread connection O.D.(in) I.D.(in)
2 3/8IF 3 3/8~3 3/4 1 3/8 4 1/2IF 6 3/8~7 2 13/16
2 7/8IF 4 1/8~4 1/4 1 9/16 5 1/2IF  7~7 1/2 2 13/16
3 1/2IF 4 3/4~5 1/4 2 6 5/8REG 8 2 13/16
4IF 6 1/4~6 3/4 2 13/16 7 5/8REG 9 1/2 2 13/16

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