Recognition of condensate blockage is important in reservoir monitoring and management since the secondary operations such as gas cycling might need to be triggered to re-pressurize the reservoir. This study addresses the monitoring of a realistic gas condensate reservoir by time-lapse seismic data and transient well test analysis. A compositional reservoir modelling is employed to perform the numerical well test simulation. However, implementing a compositional fluid flow simulation highlights the limitations of the current petro-elastic model (PEM). Therefore we have developed an approach to consider the compositional changes of the fluid in the petro-elastic modelling. The equivalent black-oil model results are cross-validated against the compositional PEM as well. Our results show that the original widely used Batzle & Wang approach should be modified for a gas/condensate system. We show that the response strength of the well testing and the 4D seismic are complementary in each particular flow period (drawdown and build-up) which can be coupled to give useful information for reservoir monitoring purposes.
|Title of host publication||73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011|
|Publisher||EAGE Publishing BV|
|Publication status||Published - 23 May 2011|
|Event||SPE EUROPEC/EAGE Annual Conference and Exhibition - Vienna, Austria|
Duration: 23 May 2011 → 26 May 2011
|Conference||SPE EUROPEC/EAGE Annual Conference and Exhibition|
|Period||23/05/11 → 26/05/11|