Enviros was contracted by Lukoil Oil Company to perform a surface geochemical site survey in Black Sea. Water depths ranged from 400m to 1,200m over the site survey area which totalled approximately 800km2. The primary aim of site survey was to provide a high quality geochemical dataset appropriate the detection and characterisation of petroleum signatures and properties in prospective areas to reduce and manage risks of future exploration.
A total of 129 dropcores were performed over the complete site survey area. The dropcore utilised for the scope of work comprised a 6m barrel with plastic liner and stainless-steel cutting shoe with core-catcher. The technical specification required the minimum sample recovery for each dropcore was 4m. Each recovered dropcore sample was assigned a unique identification, described and logged in the dedicated offshore laboratory. Primary and back-up sub samples were extruded and separated where appropriate. All samples were stored a -20°C to preserve pertinent properties to be analysed in the onshore laboratory.
Project Organisation
Enviros was responsible for performance of all pre-mobilisation, mobilisation, fieldwork, demobilisation and associated onshore laboratory testing 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 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 was 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.
