wherein—with the at least one well center tool connected to the motion arm of the lower tubular racker assembly—the well center tool is operable above the drill floor.


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    Title :

    WELLBORE DRILLING SYSTEM


    Contributors:

    Publication date :

    2017-11-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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