Petrobras has announced that on May 9 at 2:26 pm, the company started up the production of well 7-LL-22D-RJS located in Lula field, in the area of Lula NE Pilot, in Santos Basin Pre-Salt Region.
This well, with a production potential of 26 thousand barrels per day (bpd), is interconnected to FPSO Cidade de Paraty via a pioneer platform-connection system in this field. Through this system, the upper part of the production pipelines is supported by a submerged buoy positioned at a water depth of 240 meters below sea level. The wellhead is located at a water depth of 2,130 meters.
The buoy supporting the pipelines, referred to as BSR (Buoyancy Supported Riser), is installed at a location that is unaffected by the platform’s movement. This innovative concept enables the use, in some parts of the project, of rigid steel pipes (Steel Catenary Risers – SCRs) at ultra deep waters.
Eight steel tendons of 1,883 meters each, connected to four stakes attached to the sea floor anchor the buoy, which measures 40m x 52m and weighs 1,936 tons.
Subsea 7 built and installed the system. The installation of this buoy, which has the capacity to support pipelines of four production wells and three injection ones, began on December 19, 2013, and ended on February 7, 2014. On April 1, 2014, installation of the steel catenary risers was completed for the interconnection of the first three oil production wells of this buoy. Connection of well 7-LL-22D-RJS to the FPSO was completed on May 5, 2014, with the installation of its flexible pipelines. A second buoy has already been installed and is ready to receive the steel catenary risers used for production and injection.
FPSO Cidade de Paraty went into operation on June 6, 2013 through well 7-LL-11-RJS which is directly connected to the platform and produces some 30 thousand bpd. Throughout 2014 an additional six wells will be connected to the unit, four production and two injection, all through the buoys, enabling FPSO Cidade de Paraty to reach its full production capacity of 120 thousand bpd in the third quarter of 2014.
Lula field is operated by Petrobras (65%) in partnership with BG E&P Brasil Ltda (25%) and Petrogal Brasil S.A (10%).