The Largest Platform in the Gulf of Mexico at the Time of Installation Client: Tenneco Oil Company Location: Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana Scope: Engineering; Procurement; Installation; FAB Status: Completed 1974 West Cameron Platform Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana Details: • Tenneco’s platform houses facilities for drilling 24 wells in the West Cameron Field, Blocks 642 and 643. • The platform was designed at Brown & Root’s Houston office and the structure was fabricated at the Greens Bayou Fabrication Yard near Houston. • The jacket of the platform, which serves as the supporting base for the deck section, measures approximately 45 feet by 135 feet at the top of the structure, and approximately 143 feet and 234 feet at the base. The overall height of the jacket is approximately 400 feet. With deck sections in place, the facility rises 73 feet above the water line. • The all-steel Tenneco jacket was fabricated in sections, or “bents,” each of which required 11 crawler cranes working in parallel to roll up and lift the bents into place. Pipe sizes utilized during construction ranged from 57 inches to one-half inch in diameter. • Because of its extreme height and weight, the jacket was fabricated on its side on 400-foot long tracks so it could be skidded onto a barge for towing to its new home in the Gulf of Mexico. • Upon completion, the jacket weighed 3,700 tons. Loaded onto the barge, it was towed down the Houston Ship channel and into the Gulf of Mexico. ·Upon reching its West Cameron Field location, the structure was launched into the sea and positioned by a combination of flooding the hollow jacket legs and by lifting by the Brown & Root derrick barge, Foster Parker. As the jacket legs were flooded by sea water, the natural shifting of weight eased the structure into its upright position. Continued on following page
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The Largest Platform in the Gulf of Mexico at the Time of Installation
Client: Tenneco Oil Company
Location: Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana
Scope: Engineering; Procurement; Installation; FAB
Status: Completed 1974
West Cameron Platform
Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana
Details:• Tenneco’s platform houses facilities for drilling 24 wells in the West Cameron Field, Blocks 642 and
643.
• The platform was designed at Brown & Root’s Houston office and the structure was fabricated at the Greens Bayou Fabrication Yard near Houston.
• The jacket of the platform, which serves as the supporting base for the deck section, measures approximately 45 feet by 135 feet at the top of the structure, and approximately 143 feet and 234 feet at the base. The overall height of the jacket is approximately 400 feet. With deck sections in place, the facility rises 73 feet above the water line.
• The all-steel Tenneco jacket was fabricated in sections, or “bents,” each of which required 11 crawler cranes working in parallel to roll up and lift the bents into place. Pipe sizes utilized during construction ranged from 57 inches to one-half inch in diameter.
• Because of its extreme height and weight, the jacket was fabricated on its side on 400-foot long tracks so it could be skidded onto a barge for towing to its new home in the Gulf of Mexico.
• Upon completion, the jacket weighed 3,700 tons. Loaded onto the barge, it was towed down the Houston Ship channel and into the Gulf of Mexico. ·Upon reching its West Cameron Field location, the structure was launched into the sea and positioned by a combination of flooding the hollow jacket legs and by lifting by the Brown & Root derrick barge, Foster Parker. As the jacket legs were flooded by sea water, the natural shifting of weight eased the structure into its upright position.
Continued on following page
Details:• Once in position, 48-inch diameter steel pilings were driven through each of the eight
main jacket legs to a depth of 370 feet beneath the ocean floor. ·Four additional 48-inch pilings were driven through pile guides at a penetration depth of 320 feet to gain addi-tional stability.
• Still more support was achieved by sections of quarter-inch steel mud mats that were welded to the base before the structure was towed to sea.
• With the jacket and piles in place, Brownbuilders readied the two steel deck sections for towing to sea. Placing of the deck sections at the offshore site required two lifts of 400 and 500 tons by the barge, Foster Parker. The sections were lifted into place and then welded to the piling extending through the jacket legs.
• Adding nearly 1,000 tons to the overall weight of the platform, the deck sections serve as the base for drilling and production equipment. The jacket, piles, and deck bring the total weight of the playform to 8,000 tons.
• Once the deck sections were set and welded in place, Tenneco’s new drilling rig and supporting equipment were prepared for installation. The rig, the Noble 27, incorporates special design features for drilling in deep waters of the Gulf.
Highlights:• This was the largest platform in the Gulf of Mexico at the time with a 143 x 234 x 400-ft
jacket at 3,700 ST in 375-ft WD supporting a 24-well, 1,000 ST deck. Total platform weight is approximately 8,000 ST.
The Largest Project Ever Undertaken In Nova Scotia at the Time
Page 2
Client: Tenneco Oil Company
Location: Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana
Scope: Engineering; Procurement; Installation; FAB
Status: Completed 1974
West Cameron Platform
Cameron Field - Gulf of Mexico, 125 Miles Offshore of Louisiana
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