×

Cantilevered multi purpose tower and method for installing drilling equipment

  • US 7,083,004 B2
  • Filed: 10/15/2003
  • Issued: 08/01/2006
  • Est. Priority Date: 10/17/2002
  • Status: Active Grant
First Claim
Patent Images

1. A drilling rig capable of being used offshore comprising:

  • a. a cantilever, which is mounted for offshore use so as to be moveable in a first direction and a second direction with the cantilever projecting outside the drilling rig;

    b. a multi purpose tower is fixedly attached to the cantilever, wherein the multi purpose tower comprises a mast disposed on a top side of the multi purpose tower provided with cable blocks fixedly connected to the mast and a gripper provided on a bottom side of the multi purpose tower, a trolley movably fixed on the mast, a hoist, a hoisting cable attached to the hoist and a winch, the hoisting cable being guided over the cable blocks, and wherein the trolley is moveable relative to the mast with the aid of the hoist; and

    c. at least two friction reducing devices attached to a supporting cart, which are slidable with the supporting cart relative to the drilling rig and relative to the cantilever.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×