Far East-Levingston Delivers Pool Rig 144
Far East-Levingston Shipbuilding Ltd. in Singapore recently completed and delivered another jackup rig to Pool Company of Houston. Named Pool Rig 144, the 160-foot-water-depth jackup was towed to its location in the Arabian Gulf to operate for ARAMCO.
The platform consists of a triangular- shaped hull, 154 feet long by 132 feet wide by 15.75 feet deep. It is equipped with three triangular trussed legs with spud cans that can be lowered to the ocean floor and on which the platform can elevate itself above the water surface.
Elevating or lowering the legs and spud cans or platform is accomplished by mechanical gear units attached to the hull at each leg. Power supply is from diesel generator sets, which are installed inside the platform.
The platform has the capability of being buoyant, and elevating the hull on the spud cans, and lowering the hull to the water surface with a fixed and variable load totaling 7,2 00 kips (3,600 short tons) at an elevating speed of 1 foot/minute.
The bearing type spud tank fitted at the lower end of each leg serves as the primary load support member for the platform. An access opening with hatch cover is provided in the top and a flooding valve is provided in the tank. A spud jetting system and tank vent is also provided. Pool Rig 144 is built to all applicable requirements of the American Bureau of Shipping for Class A-l, Self-elevating Drilling Unit.