Description/Scope:

• Risk sharing contract to purchase materials, fabricate and loadout a tripod jacket with appurtenances, piles and conductors.
• Transport & install tripod jacket (approx. 6,000 s. tons) in 670' water depth.
• Dual DB Lift - DB 50 & Shearleg 5000
• Secure jacket to seafloor with 4 x 84" diameter piles (2 at C1, 1 at A2 and 1 at B2).
• T.O.J. "Dummy Leg" framing to accept a 4-leg deck (approx. 1,600 s. tons).
• Designed for full API Rig (H&P 107)
• Jacket footprint: 260' x 260' x 213'
• Skirt piles: 2 at C1 = 320 s. tons / 330' and 1 at A2 and B2 - 420 s. tons / 425'

Innovations:

• The Cinnamon jacket is the deepest tripod jacket fabricated and installed to date.
• Due to the uncertainties associated with fabrication of a tripod of this size and considering engineering was still in progress, it was decided to handle this project under a risk sharing type of contract. The project was completed on schedule and under budget.

Technology:

• The fabrication sequence was based on a conventional tripod modified to accommodate the size and boom height restrictions associated with the large base on a tripod of this size. The bottom two elevations were built as one piece, lifted and set in position at the bottom of the jacket with the Shearleg 5000. This allowed us to do much of the work at ground level and was a key factor in staying under budget on this project.