SUBSEA 7 has successfully completed a crucial repair to pipeline infrastructure in the Total-operated Girassol field offshore Angola, West Africa.
The project was accomplished using remote intervention technologies working in 1,350m (4,429ft) of water.
Aberdeen-headquartered Subsea 7 won the job in a technical design competition run by Total.
As a result, the subsea contractor was tasked with design, manufacture, testing and operation of a new deepwater pipeline repair system (PRS).
The system would then be used on the repair of a damaged 12in-diameter water-injection pipeline in the Girassol field.
The PRS system comprises a set of permanent equipment, such as the spool deployment frame, rigid spool piece, end connection skids and two mechanical pipeline connectors, together with a suite of ROV-deployed or operated tools for preparing and aligning the pipeline prior to the connector installation.
Subsea 7 says the PRS is the latest addition to its now extensive pipeline-repair capabilities, which include both grouted and hyperbaric welded solutions.
Project management and engineering were performed at Subsea 7’s Westhill complex, just outside Aberdeen.
In-country works were supported from the firm’s facilities in Luanda, Angola.
Final confirmation of the repair was achieved by a pipeline leak test from the Girassol FPSO, which was completed in December 2009.