Patent ID: 10718197

Abstract:
In a wellbore drilling installation and method for drilling a wellbore or other wellbore related activities, the installation includes a drilling tower, drill floor with well center, and a slip device system including a first slip device and a second slip device. A top drive trolley with top drive device is guided along a vertical trolley rail. The trolley includes a frame and the top drive device is attached to the frame independent from first and second vertical frame members. A rotatable head clamp component is adapted to be releasably connected to and suspended from the first and second vertical frame members of the trolley. The rotatable head clamp component includes a housing, an open-centered rotary body, a drilling operation thrust bearing arranged between the housing and the rotary body adapted to support the load of a drilling tubulars string during a drilling operation. The component further includes a retainer assembly that is embodied to axially retain the top end of the drilling tubular whilst the top end of the tubular remains accessible for the rotary stem of the top drive device. The installation is embodied such that, with both the first and second slip devices in their respective retracted position, the rotatable head clamp component is lowerable by the trolley into a position in between the first and second slip devices onto a support structure that is adapted to support the load of a drilling tubulars string retained by the rotatable head clamp component.