Drilling device for producing well bore, has conduit emerged from rear end of drilling element, which comprises primary cable end arranged in drilling element and secondary cable end arranged outside the drilling element

摘要

The drilling device has a tubular drilling element (10) having an axis of rotation (13), with a forward end (15) in direction of advancement (14) and a rear end (40) in the advance direction. A drive unit (30) is provided for driving the drill element about the axis of rotation. A conduit (50) emerged from the rear end of drilling element, which is provided with a primary cable end (51) arranged in the drilling element and the secondary cable end (52) arranged outside the drilling element. An independent claim is included for drilling method.