Petrobras concludes deepwater presalt drilling campaign offshore Brazil

Petrobras has completed drilling of Entorno de Iara 3, the final exploratory well under the presalt Santos basin Rights Transfer Agreement.

Well 4-BRSA1226-RJS (4-RJS-728), the third on the Entorno de Iara block, was drilled 241 kilometers (150 miles) off Rio de Janeiro state in 2,224 meters (7,296 feet) of water. It confirmed good quality 27º API oil in carbonate reservoirs below the presalt layer, starting at a depth of 5,548 meters (18,202 feet) down to TD of 5,875 meters (19,275 feet).

Petrobras drilled a total of 16 exploratory wells over six areas under the Rights Transfer Agreement, with a 100% success rate. Results suggest 5 Bboe in place, in line with the volume contracted with the Brazilian federal government.

Late last year Petrobras had declared commerciality for part of the volume contracted in the Franco area (now the Búzios field) of 3.058 Bboe and the Tupi Sul area (now the Sul de Lula field) of 128 MMboe.

Elsewhere in the region, the company has started production from well 7-LL-22D-RJS on the Lula field (Lula NE Pilot area). The well, designed to produce up to 26,000 b/d of oil, is connected to the FPSO Cidade de Paraty.

The riser section of the production pipelines is supported by a submerged buoy at a water depth of 240 meters (787 feet). The wellhead is in a water depth of 2,130 meters (6,988 feet).

During 2014, six more wells will be connected to the platform (four producers and two injectors) using the Subsea 7-supplied riser support buoy system, which is suspended from the seafloor via eight steel tendons. In 3Q the company expects the FPSO to reach its full production capacity of 120,000 b/d.

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