CTC Completes North Bardawil Scope of Work and Subsea Wells are Now Producing Gas
05 October 2009
On 24th August 2009, CTC safely and successfully completed its scope of work for the North Bardawil Project. IEOC (ENI), through its operating company Petrobel, has developed the North Bardawil concession which lies in the Mediterranean Sea, offshore Egypt. CTC's parent company, Trico Marine Services, Inc., previously announced this contract award in January 2009.
As a result of CTC's performance on previous projects in the Mediterranean and our continued relationship with ENI, CTC was well positioned to provide a solution for this project.
CTC's main scope of work on the project was split into two phases, pre and post drilling operations at the Assad and Zaraf wells. The work involved the diverless tie in of both Wells to the 14” pipeline (transporting gas to the existing Barboni platform) and the transportation, installation and trenching of 23km of umbilical and electric/hydraulic jumpers (for controlling the wells from the Barboni platform). This extended to the installation of two Subsea Protection structures (36 tonne & 33 tonne) and a Pipeline End Manifold (PLEM) weighing 61 tonne, which were installed from Volantis, a subsea construction vessel. CTC also performed 18km of umbilical trenching, which included operation in some difficult soil conditions followed by testing and a post-trench survey. The 14” pipeline connections were leak tested, pipeline dewatered and Nitrogen packed by CTC using services of a pre-commissioning subcontractor on the Barboni platform and Volantis
CTC were involved in a large amount of umbilical routing, interface engineering and installation engineering before the offshore phase commenced including the design and fabrication of a basket to transport hydraulic and electric flying lead jumpers to seabed for subsequent installation by our ROV. The CTC designed jumper basket was fully tested to the client's satisfaction.
The mobilisation of the project equipmentstarted back in Q1 of 2009 where CTCcompleted the loadout of the infield umbilical (approx.6.8km), main umbilical (approx.16.8km), spare umbilical and HFL & EFL Jumpers at OMUK Rosyth onto Volantis. This was carried out safely and within the budgeted time frame in sub-zero weather conditions. This was then followed by the offshore operations.
This complex subsea construction project utilized the MPSV Volantis a DP II multi-role support vessel with the permanently installed jet trenching system, UT-1, which is the world's most powerful jet trencher at 2.1 Mega Watts, a 2,000 tonne carousel reel for deployment of flexible pipeline and umbilical, a 150 tonne heave compensated crane for deepwater construction, and DeepOcean Installer work ROV with diverless connectors and tooling for diverless intervention.
This state of the art spread allowed Petrobel the ability to conduct the multiple construction operation from one support vessel – saving the client time and money.
Assad Well (330m WD) and Zaraf Wells(110m WD) which are part of the North Bardawil Concession are now successfully producing gas from 24th August 09. CTC were proud to be involved in the commissioning of these wells by ROV assistance to Petrobel /ENI as the final activity from CTC's state-of-art vessel, Volantis.
Our project management and engineering team includes a wealth of experience from subsea installation and trenching, umbilical manufacturing and installation to structural engineering and were more than capable of handling all of the project demands. The project time scales were also met thanks to the thorough planning of the CTC Logistics, MobilisationandProject team's.
A Petrobel representative has expressed his thanks to CTC's onshore and offshore team for professional execution of the project from the hi tech vessel Volantis, as well as CTC's proactive approach to problem solving and contingency planning during the safe execution of the Project.
Daryl Lynch, CTC's Managing Director says of this project success, “North Bardawil is CTC's largest construction package to date and highlights the breadth of services and technology that CTC provide ranging from trenching to a more comprehensive subsea installation and protection service. We expect to secure similar projects built around advanced subsea technologies in the future."