Rosa - Total.com

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HIgHLy INsULaTED ProDUCTIoN fLoWLINEs The subsea network that carries Rosa crude consists of 64 kilometers of production flowlines insulated using ITP’s Pipe in Pipe technology. Each line consists of two concentric tubes. Izoflex TM , an insulating material, is inserted in the annulus and a vacuum (air at 10 mbar a ) is created. Swaged joints (pressure-formed joints) are used to assemble the pipe sections. Inner pipe Resin rIsEr ToWEr: INNoVaTIVE DEsIgN Double wall sleeve Outer pipe The new concept (BHOR) implemented for the riser anchored to the west of the Girassol FPSO is another major innovation of the Rosa Project, combining highly effective thermal insulation and buoyancy. The 1,200-meter-tall structure comprises four production risers (8” x 17”) of Pipe in Pipe technology, along with two water injection risers (10”) and four gas lift lines associated with the 8” production flowlines. The entire assembly is wrapped in syntactic foam which holds it together around a central steel tendon (18”) and contributes to the structure’s buoyancy. The riser tower is stabilized in vertical position thanks to the syntactic foam components and a steel buoyancy tank 6 meters in diameter and 35 meters high.
25 WELLs/145,000 BarrELs PEr Day Two drillships handled the entire drilling campaign on Rosa. The Saipem 10000 arrived on site in December 2005 and is performing most of the drilling. This dual derrick vessel can carry out several operations simultaneously, thereby minimizing drilling time. In September 2007, the drillship Pride Angola arrived from the neighboring Dalia fi eld and joined the Saipem 10000 for the remainder of the drilling campaign, scheduled to last until mid-2008. ENVIroNMENTaL PrEsErVaTIoN Before the Rosa Project was launched, a comprehensive study was carried out to assess the social and environmental impacts of development and operation. The fi ndings were submitted to the Angolan authorities and validated. This study supplemented those already completed in 2000 and 2001 in relation to the Girassol and Jasmim projects respectively. Additionally, all onshore fabrication works carried out in sensitive areas were analyzed through a specifi c environmental impact assessment that was also submitted to the authorities for validation. The aim here was to identify potential risks to local fl ora and fauna and defi ne action plans to mitigate them. The teams were especially attentive to the impact of the riser tower assembly works, its storage in a lagoon adjacent to the Petromar fabrication yard in Soyo, and its transport to the site. This commitment to environmental preservation is also refl ected in efforts by Total and its partners to increase the water treatment capacity of the Girassol FPSO. With the start-up of Rosa, all produced water (including water from Girassol and Jasmim) is reinjected into the reservoirs: there is no more discharge into the sea. Furthermore, the Group found a solution for curbing greenhouse gas emissions using an innovative process for inerting, venting and capturing gaseous emanations from the FPSO storage tanks. Associated gas is also reinjected to avoid fl aring to the atmosphere. 07
Page 1 and 2: exploration & production Rosa, ImpR
Page 3 and 4: a comPLex Project, an exemPLarY ach
Page 5 and 6: extRacting value fRom two ReseRvoiR
Page 7 and 8: ToTaL IN aNgoLa: a ParTNErsHIP for
Page 9: fPso: > Hull dimensions: 300 m x 60
Page 13 and 14: lOcatiOnS OF rOSa PrOJect deSign an
Page 15 and 16: key dateS > June 2005: commencement
Page 18: TOTAL S.A. Capital stock: 6,062,232

Rosa - Total.com

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