Concept Definition (Pre-FEED)
Concept Definition provides the link between Field Development Planning and FEED. A single, well defined option is selected to complete the Create phase.
Concept Definition, or Pre-FEED, adds a further level of detail to the short listed options identified in the field development planning phase to achieve more precise definition, a better cost estimate and, ultimately, selection of a single option for FEED.
Activities in Concept Definition are chosen to address the development's circumstances and can include:
- Process scheme optimisation
- Reduction in optionality using targeted studies of particular aspects of design
- Finalisation of field architecture
- P&ID initial development
- Layout development
- Issue of enquiries for long lead or high cost items
- Cost estimating and economic assessment
- Project schedule enhancement
- Preparation of survey scopes of work, tendering and management of the work
- Engagement with other work groups and third parties to reduce uncertainties e.g. drilling, reservoir engineering, tie-ins to other facilities, regulatory authorities, buyers of products.
- Development of risk mitigation plans
- Project Execution Plan and contracting strategy finalisation
- Basis of design update
- Commencement of the ESIA process
As a result, the development enters FEED with a single, well defined option. The development's major design issues have been decided; risks and uncertainties are understood; the cost estimate, budgets and schedules are clear and complete.