First job in the North Sea for Deep Drilling Rig
An innovative, powerful and highly automated deep drilling rig from Herrenknecht Vertical GmbH has been assembled on a cantilever at the Herrenknecht site in the port of Kehl (southern Germany) in the past months. This innovative, self-supporting cantilever drilling rig which belongs to a floating lifting platform (jack-up barge) will carry out workover operations or drill new oil and gas wells in the North Sea.
During the concept and design phase of the innovative drilling rig, the very demanding operating and safety standards for offshore use in the North Sea played an important role. Moreover, the Herrenknecht “Terra Invader 250CL” sets new standards for safe and efficient drilling and production operations. Herrenknecht deep drilling rigs generally excel by their hydraulic-supported working method and their core components. The hydraulic cylinder hoist system, for example, allows for particularly accurate and safe vertical drilling operations. The supply and return of the drill pipes and casings from and to the store on the drilling unit, necessary during drilling and casing, is carried out to a large degree automatically. The “hands-off” pipe handling makes sure that, in general, no personnel need to work in dangerous areas. Thus, personnel on the drilling platform can be reduced, occupational safety can be increased significantly and the necessary flexibility during the drilling process can be maintained. This drilling rig, which is designed comparably light with a hook load of 250 tonnes, can drill down to depths of 5,000m for slim hole wells.
Technical acceptance of the new deep drilling rig by the contractor “SWIFT DRILLING BV” took place successfully in mid-September 2010 in the port of Kehl, where Herrenknecht operates a state-of-the-art service center for the assembly of components. With the delivery of the new cantilever rig, Herrenknecht Vertical GmbH has taken its first step in the offshore business for the exploration of oil and gas.