Subsea 7 was awarded the $22 million contract earlier in 2008. The pipeline bundle incorporates a 12-inch sleeve system containing a dry-insulated eight-inch lined production pipeline, six-inch plastic lined water injection flowline, three-inch gas lift line, electrical power and signal cables and hydraulic and chemical controls tubing.
The Pipeline Bundle product integrates the required flow lines, water injection, gas lift and control systems necessary for any subsea development and assembles them within a pipe. At each end of the pipeline, the structures, manifolds, incorporating equipment and valves, designed specifically to the requirements of the field, are attached. The fully tested system is then launched and transported to the location using the Controlled Depth Tow Method.
According to the company, the project has been managed and engineered from Subsea 7’s offices in Aberdeen, UK. Subsea 7 HAS provided project management, detailed design, fabrication, onshore testing, subsea tow and installation of the 1.3km pipeline bundle. Bundle fabrication was undertaken at Subsea 7’s Wester bundle fabrication base in the north of Scotland.
Robin Davies, Subsea 7’s North Sea vice president, said: “Subsea 7 has been using bundle technology for years and it is very important in both North Sea and international subsea developments, incorporating all structures, valve work, pipelines and control systems necessary to operate a field.”
