Deepwater geotechnical site investigation offshore Mozambique using PROD technology

This offshore campaign required detailed preparation to overcome logistical, metocean, and security challenges in a remote region. A dynamically positioned support vessel was mobilised from Asia and equipped with our PROD subsea drill system, which underwent full commissioning and testing before deployment. Vessel hardening measures and enhanced security protocols were implemented before transit to Mozambique. 

To ensure supply continuity and effective coordination, we established an onshore logistics support team. This team managed local supply chains, crew transfers, and permitting, enabling seamless communication between offshore and onshore operations. 

The PROD conducted continuous sampling, CPTU, dissipation, and BPTU testing, maximising efficiency by performing multiple in situ tools within a single deployment. Box coring systems were also deployed for sediment sampling and recovery.  

Over a 79-day offshore programme, the team achieved less than 10% downtime across the campaign. The investigation acquired over 1900 m of continuous core samples, 1700 m of CPTU data, 19 cyclic BPTU tests, 23 dissipation tests, and 46 box core samples, with complementary offshore laboratory testing providing high-quality geotechnical data. We achieved peak productivity of 120 m drilled in a single day. 

• PROD5 with integrated dual winch Launch and Recovery System (LARS), enabling efficient deployment
• Multi-tool deployment within a single dive (CPTU, BPTU, dissipation, sampling)
• Box coring system with a dedicated A-frame and winch