Third Rowan Gorilla Drilling Rig Delivered By Marathon LeTourneau
The Rowan Gorilla III departed from Belle Chasse, La., recently bound for the east coast of Canada where the drilling rig will operate under contract to Mobil Oil Canada, Ltd. offshore Sable Island, Nova Scotia. The new unit is the third in a series of the largest self-elevating jackup rigs built to date by Marathon LeTourneau Offshore Company for Rowan Companies, Inc. of Houston. The first unit has been working successfully offshore Sable Island for the past year under contract to a Husky/Bow Valley joint venture, while the second recently arrived in the North Sea.
The Gorilla rigs are of a new and heavier class intended to drill up to 30,000 feet in water depths up to 328 feet in any ice-free hostile environment in the world. In less hostile environments, they are capable of drilling in water depths of more than 400 feet. These 15,000-ton units require twice the amount of fabricated steel used in the previously largest jackups. At 297 feet long by 292 feet wide, Gorilla Class rigs are nearly 40 percent larger than the Marathon LeTourneau 116 Class jackups.
Construction of the Rowan Gorilla III was completed at Marathon's Vicksburg, Miss., shipyard, with materials purchased by both the builder and the owner from manufacturers located in 33 states throughout the U.S. For example, the rig stands on structural steel plate and tubular parts made in Ohio, New York, Wisconsin, Massachusetts, Pennsylvania, Florida, Illinois, and Texas, all purchased by the shipyard. Owner-furnished equipment that Rowan purchased to perform the drilling functions was manufactured in many of these same states, plus others.
When Gorilla III left Belle Chasse it was towed by the Smit London, a 22,000-bhp oceangoing tug owned by Smit Tak International Towage and Salvage Company of Rotterdam.
The journey took approximately 20 days, and brought the rig from the Gulf of Mexico around the Florida peninsula and up the U.S.
and Canadian east coast to Nova Scotia. During the voyage the tug received propulsion assistance from the operation of the Gorilla Ill's twin 112-inch propellers in Kort nozzles driven by eight electric motors with 6,800 hp total output.
The Gorilla III is the 23rd rig in Rowan's offshore fleet. During its 60 years of experience in the contract drilling business, the Houston company has drilled more than 7,000 oil and gas wells throughout the world.
Other stories from February 15, 1985 issue
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- Two More U.S. Lines Containerships Delivered Early By Daewoo Yard page: 5
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- St. Pe Succeeds Erb As President of Ingalls Shipbuilding Division page: 10
- FMC Offers Brochure On High-Capacity Centrifugal Pumps page: 11
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- Society Of Marine Consultants Reviews Arctic Oil Transportation page: 20
- Amor And Frayling Named Vice Presidents For Lister Diesels page: 20
- Navy Buys 11 More Ships For Ready Reserve Fleet At Cost Of $82.5 Million page: 21
- Peterson Yard Launches Another Rescue/Salvage Vessel For Navy page: 22
- MarAd Approves Sale Of Delta Line To U.S. Lines page: 22
- Boeing Sells Jetfoil To Canadian Company For Marine Research page: 22
- New York SNAME Meeting Hears Paper On Shipboard Computers page: 22
- Third Rowan Gorilla Drilling Rig Delivered By Marathon LeTourneau page: 28
- Morris Guralnick Firm Awarded Two Contracts For Conversion Designs page: 29
- Navy Awards NASSCO $14 Million For Overhaul Of Tank Landing Ship page: 29
- OIL SPILL CONFERENCE page: 30
- FAIRNESS, SIMPLICITY AND ECONOMIC GROWTH page: 37
- New Racal-Decca Problem-Solving Electronics Unveiled page: 41
- SweetWater RO Unit Selected For Antarctic Expedition By British page: 42
- Wartsila Delivers Combination Tanker xTavi' To Neste Oy page: 42
- Sea-Land Cranes Complete Trip From Japan To Port Of Tacoma page: 47
- General Thermodynamics Offers Free Literature On 300-A BMEP Balancer page: 48
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- Nelson Industries Introduces xBilge Boy' Oily Water Separator page: 51