Abstract: A rotary table device is provided with means arranged for suspension of a pipe string. The rotary table comprises a rotary ring arranged rotatably about the central axis of the rotary table. The rotary ring is formed by two or more ring sections, each connected to a system comprising a bearing housing section rotatable relative to a base section, a bearing housing groove being formed in a base contact surface on the bearing housing section and a corresponding base groove being formed in an opposing bearing housing surface in the base section. The grooves form a curve-shaped track for a roller body and the groove has a curvature center coinciding with the central axis of the rotary table. The rolling diameter of the roller body exceeds the collective depth of said grooves, and a channel connecting the end portions of the bearing housing groove is formed in the bearing housing section.

Abstract: A device is for vertical tool guiding for a drill floor. On the drill floor is arranged at least one rig. Each rig is arranged on a rig foundation supported on the drill floor rotatably about a first, vertical axis (A) and arranged to be able to displace a tool in a horizontal working sector (Sa, Sb, Sc) that in a vertical projection at least touches or cuts through the central axis (C) in a through drill floor opening. Each rig is provided with a vertical guide track.

Abstract: A device for tripping, in which, at a drill-floor opening which is arranged to receive a pipe string, two or more cooperating pipe-handling units are arranged, each, independently of the other(s) or in cooperation with the other(s), being arranged to releasably hold the pipe string fixed and to move the pipe string in its axial direction, and also to move a pipe section in the axial direction of the pipe string and rotate the pipe section around the axis of the pipe string.