NEW JACK-UP DRILL RIG EXTENDS THEIR RANGE TO 375-FT WATER DEPTH

A new design of jack-up drill being built for the Gulf of Mexico extends from 250 ft to 375 ft, the depth of water in which they operate. Until now what limited their depth was their stability in the leg-up (towing) position. With the tall legs extended to high overhead, there was danger of them tipping over in high seas. Bethlehem Steel broke this 250-ft barrier by designing two-piece, telescoping legs. Foundation of Bethlehem's jack-ups is a big A-shaped mat built of cellular construction like a barge, that is sized to resist overturning forces of wind and waves of hurricane force while standing on very weak soils.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Publication Date: 1976-4

Media Info

• Serial:
  • Civil Engineering
  • Volume: 46
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Construction equipment; Drilling machines; Offshore drilling platforms; Offshore structures; Port structures; Steel structures
• Subject Areas: Bridges and other structures; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00147849
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Feb 16 1977 12:00AM