Integrated marine foundations solution delivered for offshore mooring pile installation in Congo

We delivered a fully integrated drilled and grouted solution for this technically demanding offshore foundation project, supported by detailed pre-operational stability analysis undertaken by our engineering specialists at 2H.  

Offshore operations were delivered using the MDR-040 drill rig, completing eight sockets to 2.46 m internal diameter and 26 m depth. Real-time drilling performance was monitored through the Jean Lutz data system, while rig handling and motion control were stabilised using Menck’s PHC60 passive heave compensator. 

To meet project-specific interface requirements, we adapted both the Bottom Hole Assembly (BHA) and hydraulic gripper can, ensuring full compatibility with the client-supplied piles and project requirements. 

Grouting operations were carried out using the recirculating jet mixing (RJM) system, supported by cement silos and a fully equipped offshore laboratory to provide continuous quality control throughout installation. 

By combining engineering analysis, customised tooling, drilling, lifting and grouting services under a single integrated solution, we delivered a safe, efficient and high-quality offshore foundation installation and reduced interface risk. 

• MDR-040 offshore drill rig for large-diameter socket drilling
• Project-specific Bottom Hole Assembly and hydraulic gripper clamp
• PHC60 passive heave compensator for stabilised offshore handling
• Recirculating jet mixing (RJM) grouting system with silos and offshore laboratory
• Jean Lutz real-time drilling data monitoring system
• Integrated engineering stability analysis for safe execution