Multi-scale geological modelling: oil in place and recovery predictions in carbonate reservoirs

When:  Apr 29, 2016 from 11:15 AM to 12:15 PM (CET)
Associated with  Swiss Section

Multi-scale geological modelling: a tool to estimate oil in place and recovery predictions in carbonate reservoirs.

 

Obtaining a fit-for-purpose rock-type classification that adequately incorporates the key depositional and diagenetic heterogeneities is a prime challenge for carbonate reservoirs. Another prevailing issue is to integrate static and dynamic reservoir data consistently with the rock-typing scheme in order to correctly initialise the reservoir simulation models. This talk will discuss a novel multi-scale geological modelling and upscaling approach for carbonate reservoirs. We demonstrate this workflow for a giant offshore carbonate reservoir (“Field X”), which comprises highly heterogeneous Eocene-Oligocene limestones. Geological studies carried out in Field X suggested that the key permeability pathways are strongly related to the mechanism of reservoir porosity and permeability evolution during late-burial corrosion. Our workflow was able to encapsulate these heterogeneities adequately and, as a consequence, provided a much improved reservoir simulation model for Field X and more accurate estimates of hydrocarbons in place. Subsequently, the cumulative production curves computed by the reservoir simulation model of Field X showed closer agreement to the historic production data and hence allows us to plan future reservoir developments more confidently.

 

 Department of Earth Sciences, University of Geneva, 13 Rue des Maraîchers, 1205, Genève, Room 001 (ground floor).


More info on Sebastian’s work can be found here

carbonates.hw.ac.uk

Location

University of Geneva, Department des Sciences de la Terre,
Auditorium 1
13, Rue des Maraîchers,
Geneva, 1205
Switzerland

Contact

Cristina Robinson Marras

cristina.robinson@addaxpetroleum.com