A method to add a joint of pipe to a conductor string includes securing the conductor string with a spider, grasping an upper end of the joint of pipe with a segmented-ring elevator, engaging a plurality of slips of the elevator with an outer profile of the joint of pipe, raising the grasped joint of pipe from non-vertical to vertical, positioning the vertical joint of pipe atop the secured conductor string, attaching the joint of pipe to the conductor string, releasing the conductor string from the spider, and retaining the joint of pipe and the conductor string with the segmented-ring elevator.


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    Titel :

    Large diameter tubular lifting apparatuses and methods


    Beteiligte:

    Erscheinungsdatum :

    2015-08-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren / B66C Krane , CRANES



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