Page 39: of Marine Technology Magazine (November 2013)

Fresh Water Monitoring & Sensors

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installing ß exible lines, umbilicals and equipment to a depth of 2,000m and will start work under the contract this year. Victor BomÞ m, Subsea 7Õs Senior Vice President for Brazil, said ÒSubsea 7 has one of the most advanced vessel ß eets in the world for subsea engineer- ing and construction, and we look for- ward to supporting Petrobras in future developments.Ó Another important Sub- sea 7 project is the seabed-to-surface Guar?-Lula NE project. Guar? and Lula are part of the large pre-salt discoveries made by Petrobras in the Santos Basin, Brazil in ultradeep water depths of be- yond 2,100m, 300km from shore. The Guar?-Lula NE project is a US$ 1billion contract awarded to Subsea 7 in 2011 by Petrobras and to date is the largest EPIC-SURF contract awarded in Brazil. The project scope includes the subsea engineering and the subsea installation of four decoupled riser systems featur- ing large submerged buoys supporting 27 steel catenary risers. The engineering and project management work is ongo- ing at Subsea 7Õs ofÞ ces in Rio de Ja- neiro. The SCRs are being reel-laid by the Seven Oceans vessel and hooked-up to the subsea buoys. The production and water injection lines are constructed predominantly from Mechanical Lined Pipe (BUTTING BuBi). This is a result of a joint development programme by Subsea 7 and BUTTING, with Petrobras participation. Offshore installation com- menced during the second half of 2012, using Seven Oceans, Acergy Polaris and Skandi Seven. The system includes: 4 submerged buoys each weighing about 2,000 tonnes to be installed ap-proximately 250 meters deep, buoy foundations and associated tethers 27 steel catenary risers of 3.9km 21 x associated pipeline end termina-tions (PLETs) of which 18  7.5-inch production lines, three 9.5-inch water injection lines and six 8-inch gas injection lines 27 x anchor suction piles 4 x monitoring systems for buoys and SCRsOn October 21 Subsea 7 was award- ed two new contracts with a combined value in excess of $600 million from Petrobras, for operation of the PLSVs Seven Mar and Seven Condor on a day rate basis for approximately three years, with operations starting toward the end of 2013 for Seven Mar and in the third quarter of 2014 for Seven Condor. Both vessels have operated for Petrobras for several years and are currently under contract with the national operator. The work scope of the contract is similar to Marine Technology Reporter 39MTR #9 (34-49).indd 39MTR #9 (34-49).indd 3912/13/2013 9:33:01 AM12/13/2013 9:33:01 AM

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