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bbl; Potable Water--1,180 bbl.DRILLING EQUIPMENT: Drawworks--Mid-Cont.U1220-EB-2,000 hp; Pumps--two Gardner DenverPZ-11; Prime movers--4-D-399 Cat; RotaryTable--Oilwell 37 1/2"; Top Drive--Varco TDS-4S.DERRICK: Dreco 160'', 1,000,000-lb hook load.BOP SYSTEM: One Shaffer, 13 5/8" x 5,000 psi;one double and one single CIW type U 13 5/8" x 10,000 psi.CRANES: Link Belt 218 & 238.WORK AREA: Gulf of Mexico.OCEAN SPURCONSTRUCTION: Swedeyards Gotaverken, Arendal,Sweden, 1981.OTHER DATA: Same as Ocean Spartan,Top

Efficiency is further enhanced with the use of magnetic bearings, which avoid fire friction of rubbing parts associated with traditional oiled bearings. Conventional bearings can use as much as 10,000 w, while magnetic bearings require only 180 w. That amounts to 500 times less friction loss. Current development projects are expanding the range and duty of the compressor wheels and promise to offer even greater efficiency for water-cooled and air-cooled duties and different capacities.CONTROLSThe new compressor effectively is a computer. It provides diagnostic and performance information through Modbus to the refrigeration system, which then communicates to the building automation system through Modbus, LonWorks, or BACnet.CHILLER APPLICATIONThe compressor manufacturer and a major chiller manufacturer teamed up to develop a line of ARI-certified water-cooled chillers, which were expected to be introduced in January 2004. The combination of flooded-evaporator technology and an oil-free system has allowed very close approaches and, subsequently, enhanced performance. The integrated VFD allows excellent part-load performance as power consumption drops off, depending on the head relief, near the cube root of the shaft speed.

WORK AREA: India.Catleia Oil Co.(Petrobras subsidiary)PETROBRAS VIRIG DESIGN: RG LeTourneau, Inc.CONSTRUCTION: Davie Shipbuilding Ltd., Canada, 1982.PERFORMANCE: Water Depth--230''; Drilling Depth--23,000''.QUARTERS: 84 persons.HULL: 243'' x 200'' x 26''.VARIABLE LOAD: 1,997 t.HELIPORT: 70'' dia.STORAGE: Mud & Cmt Bulk--7,200; LiquidMud--1,416 bbl; Fuel--2,970 bbl; Water forDrilling--6,657 bbl; Potable scottlawnmowers Water--2,760 bbl.DRILLING EQUIPMENT: Drawworks--Oilwell E-3000;Pumps--Two Oilwell A-1700-PT, triplex;