Key features of this powerful rig include a 35-foot mast and a versatile 3-speed tophead offering up to 7,200 ft-lbs of torque. It boasts a substantial 40,000 lbf holdback capacity and a 25,000 lbf pulldown, complemented by a 25,000 lbf hydraulic hoisting drum.
[pdf] The functions of a drilling mud can be summarized as follows: Drilling fluid carries the rock excavated by the drill bit up to the surface. Its ability to do so depends on cutting size, shape, and density, and speed of fluid traveling up the well (). These considerations are analogous to the ability of a stream to carry sediment. Large sand grains in a slow-moving s.
[pdf] The Aban Pearl was designed by and was built in 1977 by Far East Levingston Shipbuilding (now part of the ) at the Levingston Singapore shipyard. The Aban Pearl could operate at. .
In 1977–1996, she was named Transocean Seeker, in 1996 Treasure Seeker and in 1996–2000 Transocean Discoverer. All this time she was owned by . In 2000–2007, she was named Bulford Dolphin an. .
In 2006, while contracted by the Nigerian oil company Peak Petroleum, the rig was attacked near Nigeria by Nigerian militants and eight of the personnel on the rig were kidnapped. They were released unharmed after two da.
[pdf] 
