Petrobras 36
| History | |
|---|---|
| Name: |
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| Owner: | Marítima |
| Operator: | Petrobras |
| Builder: | Fincantieri, Italy |
| Cost: | US$350 million |
| Laid down: | 1986 |
| Acquired: | 1995 |
| Out of service: | 20 March 2001 |
| Identification: | IMO number: 8916566 |
| Fate: | capsized/sank |
| Notes: | |
| General characteristics | |
| Class and type: | Oil Production Platform |
| Tonnage: | 33,000 GT |
| Capacity: |
|
| Notes: | |
Petrobras 36 (P-36) was at the time the largest floating semi-submersible oil platform in the world prior to its sinking on 20 March 2001. It was owned by Petrobras, a semi-public Brazilian oil company headquartered in Rio de Janeiro. The cost of the platform was US$350 million (currently US$473 million).
The vessel was built at the Fincantieri shipyard in Genoa, Italy in 1995 as a drilling rig. She was owned then by Società Armamento Navi Appoggio S.p.A. The 33,000 tonnes (36,000 short tons) rig was converted by Davie Industry, Levis, Canada to the world's largest oil production platform.
P-36 was operating for Petrobras on the Roncador Oil Field, 130 kilometres (80 mi) off the Brazilian coast, producing about 84,000 barrels (13,400 m3) of crude per day.
P-36 was replaced by FPSO-Brasil which is a leased vessel from SBM Offshore. The FPSO-Brasil started its lease contract with Petrobras in December 2002.
In the early hours of March 15, 2001 there were two explosions in the aft starboard column at or around the emergency drain tank. The first explosion was caused by an overpressure event, the second by ignition of leaking hydrocarbon vapor. At the time there were 175 people on the rig; 11 were killed. Following the explosions, the rig developed a 16° list, sufficient to allow down-flooding from the submerged fairlead boxes.
Marine salvage teams tried over the weekend to save the platform by pumping nitrogen and compressed air into the tanks to expel the water, but they abandoned the rig after bad weather.
The platform sank five days after the explosions (March 20), in 1,200 m (3,940 ft) of water with an estimated 1,500 tonnes (1,700 short tons) of crude oil remaining on board.
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