InterMoor Completes Riser And Mooring Disconnection For Major FPSO Offshore Angola

InterMoor, an Acteon company, has successfully completed offshore operations for the disconnection and laydown of risers and mooring lines on a major floating production, storage and offloading (FPSO) facility offshore Angola. InterMoor won the contract in March 2014 and completed the work on budget, on schedule and with zero incidents in Dec. 2014.

The project had two phases: Phase 1 concluded with the disconnection of all 20 risers and umbilicals from the FPSO facility and their placement on the seabed in accordance with the laydown agreement; in Phase 2, InterMoor disconnected all 12 mooring lines and placed them on the seabed while the FPSO was held in place by station-keeping vessels. InterMoor provided the station-keeping procedure and Tow Masters onboard the FPSO.

The initial contract scope included project management, engineering and offshore execution. InterMoor devised multiple methods for disconnection, including the use of clamps to take the load off the risers using the offshore construction vessel (OCV) and either disconnecting or cutting the hang off on the FPSO to lower the risers. The subsea riser clamp design and fabrication were added to the contract once the project progressed. The clamps were designed by Houston-based Acteon company, 2H Offshore, and fabricated in InterMoor’s facility in Morgan City, Louisiana.

João Ruiz, project manager, InterMoor, said, “The successful completion of this project underlines our global reach and demonstrates the specific skills we provide for operations offshore West Africa. InterMoor was selected as the ideal candidate for the project because of our leading position as a mooring, foundations and subsea services provider for rig moves and mooring services, our decommissioning experience and our ability to provide local support from our operations base in Angola.”

InterMoor, an Acteon company, is the leading mooring, foundations and subsea services provider delivering innovative solutions for rig moves, mooring services and offshore installation projects. We support operators and contractors worldwide with our engineering, fabrication, shore base, survey and positioning, and inspection services to truly provide customized solutions that reduce cost, time and risk. For more information, visit www.intermoor.com.

About Acteon
Acteon provides a range of global subsea services from surveying, installation, asset integrity management through to decommissioning. Acteon’s companies are 2H Offshore, Aquatic, Claxton, Clarus Subsea Integrity, Conductor Installation Services (CIS), Core Grouting Services, InterAct, InterMoor, J2 Subsea, LDD, LM Handling, MENCK, Mirage Machines, NCS Survey, Offshore Installation Services (OIS), Probe Oil Tools, Pulse Structural Monitoring, Seatronics, Subsea Riser Products (SRP), TEAM Energy Resources and UTEC Survey. Acteon’s companies share knowledge and experience to add value and create effective, tailored solutions for clients across four business segments: survey, monitoring and data; risers and moorings; seabed foundation technologies; and project support services. For more information, visit www.acteon.com

About subsea services
Acteon’s aim is to define, shape and lead subsea services through best-in-class expertise offering full market coverage across the whole life of a subsea field. Acteon’s integrated approach to subsea services makes it easy for clients to combine capabilities to meet their specific project needs. Acteon’s subsea services companies share knowledge and experience across four business segments to deliver highly efficient solutions tailored to a client’s unique challenges, thereby reducing overall cost, risk and complexity.

Risers and moorings
Acteon provides deepwater riser engineering, structural analysis, riser, conductor, flowline and pipeline services to add value and create effective, tailored solutions. Acteon offers world-leading capabilities in high-pressure, high-temperature risers, temporary and permanent moorings, design, supply, installation, relocation and decommissioning. With the largest global inventory of offshore mooring equipment, Acteon also provides global inventory management with rapid delivery.