Enviros was contracted by DONG Energy to perform a geotechnical seabed site investigation in Norwegian waters. The geotechnical seabed site investigation scope of work comprised one hundred and sixty locations where vibrocore equipment was utilised to recover 6m samples.

Drop core and piston coring techniques were also used to suit seabed conditions. 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. 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.

Geotechnical seabed site investigation

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.