NKK To Build Two Drill Rigs For Sedco At Cost Of $29 Million

Nippon Kokan (NKK) of Japan has signed a construction contract with the w o r l d ' s l a r g e st drilling contractor, Sedco, Inc.

headquartered in Dallas, Texas, for two NKK/BMC 250 mat-supported type jackup rigs.

Masato Hiraki, NKK New York general manager, said the order covers the third and fourth units it has so far been awarded for this type rig. Two previous orders were received from J.F.P. Well Services Inc. of the U.S., each for one unit of the same type.

Contract price for the Sedco rigs is about $14.5 million each.

This price does not include machinery and equipment to be supplied by the owner. NKK reports that the first unit will be completed at its Tsu Works and delivered in May 1981. The second rig is to be delivered in July of that year. The two units are to be used for drilling operations off the coast of West Africa.

These rigs will be 191 feet long, 132 feet wide, and 16 feet deep.

The mat base measures 195 feet 6 inches by 164 feet by 10 feet.

Maximum operating depth will be 250 feet, and drilling capability will be 20,000 feet. Classed by the American Bureau of Shipping, each rig will have a complement of about 80 persons.

Maritime Reporter Magazine, page 43,  May 1980

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