Enviros was contracted by Afren Energy Resourcesto perform a geotechnical site investigation offshore Nigeria, in approximately 15m water depth. The geotechnical site investigation scope of work comprised seabed in situ cone penetration tests which were identified a requirement, as a result of a ‘gap analysis’ performed on previous contractor’s geotechnical data at the site. The purpose of the geotechnical site investigation was to acquire high quality geotechnical data from seabed cone penetration equipment, which when combined with legacy geotechnical data, would be appropriate for jack-up spudcan penetration analyses. A total of thirty one seabed cone penetration tests (10cm2 and 5cm2 cones) were performed in close proximity to existing infra-structure. Recovered undisturbed samples were logged and described in the offshore soil laboratory. Samples were sealed into sub-samples to retain the in situ properties of the recovered soils for onshore laboratory testing. Enviros performed ‘real-time’. A ‘Field’ report was issued on completion of all offshore operations and a ‘Laboratory and In Situ Testing’ report issued on completion of all scheduled onshore laboratory testing. An engineering assessment and jack-up spudcan penetration assessment was performed on completion Enviros and legacy geotechnical data integration.
Project Organisation
Enviros were responsible for performance of all pre-mobilisation, mobilisation, fieldwork, demobilisation and associated data processing, interpretation and reporting. A senior Enviros Project Manager with >15 years relevant offshore site survey / investigation experience was appointed on contract award and responsible for each project phase and Client liaisons throughout. The Enviros Project Manager was appointed an experienced Enviros Offshore Project Manager for all fieldwork operations.
The Project Manager had the role of managing day-to-day issues relating to the project, based onshore in the Enviros head office based in United Kingdom. The Offshore Project Manager was responsible to ensuring that the project is completed in accordance with Enviros procedures and to Client specifications. Responsibilities include, but not limited to being the immediate point of contact for any Offshore Client Representatives, ensuring project QHSSE procedures are adhered to during all offshore operations; this is to include mobilisation, field calibrations and checks, project tasks, post project calibration checks and demobilisation; and the production or approval of all necessary field reporting.
