Connectivity from Pre-Production Data in a Deep Marine Turbidite Reservoir, Offshore Angola

Davies, Glenn W.¹, Tony Barwise², Mike D. Tothill³ (1) BP, Middlesex, United Kingdom (2) BP (3) BP, London, United Kingdom

This paper will discuss the integration of data collected from pre-production wells in the Greater Plutonio development and its use in understanding reservoir connectivity.

The five fields making up Greater Plutonio were discovered between 1999 and 2001 and will be brought onto production in 2007. World-class seismic with strong DHI's and net pay definition reduced the need for an extensive pre-sanction appraisal drilling programme. Resultant compartmentalisation risk has been mitigated by front end loading early development wells with data collection and appropriate design of the depletion strategy, drill schedule and test programme.

This five field development has a base well stock of 43, twelve of which will be pre-drilled. Integration of pressure data, fluid data, core data, geochemical markers and interference tests from these pre-drilled wells in combination high resolution seismic will be discussed and the implications for reservoir architecture and compartmentation described. This development is one of a number of multi-field subsea developments offshore Angola and the success of this strategy points the way toward cost-effective developments in a challenging commercial environment.