Enviros was contracted by Lukoil Oil Company Ltd to perform a geotechnical site investigation in Baltic Sea; where water depths ranged from 45m to 90m. The geotechnical site investigation scope of work comprised twenty composite 100m boreholes (undisturbed sampling and in situ testing) for the purpose of piled platform design and jack-up spudcan penetration analysis and in excess of one hundred 6m vibrocores as part of an offshore route survey. Boreholes were advanced using a heave compensated API rotary drill string with wireline coring capability to suit ground conditions and the acquisition of high quality geotechnical data. Recovered undisturbed samples were logged, extruded, photographed and described in the offshore soil / rock laboratory. Selected undisturbed samples were retained in Shelby tubes to be available for onshore advanced specialist laboratory testing. Enviros performed ‘real-time’ testing of recovered samples and data processing of in situ tests to optimise the operational program and final borehole depths based on the Client’s design requirements. A ‘Field’ report was issued on completion of all offshore operations and a ‘Laboratory and In Situ Testing’ report with accompanying ‘Soil Parameter and Engineering’ report issued on completion of all scheduled onshore laboratory testing.
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.
