Sensitivity of oil production to petrophysical heterogeneities.


Skorstad, A.1, Kolbjørnsen O.1, Fjellvoll B.1, Howell, J.2, Manzocchi T.3 & Carter, J.N.4

1 - Norwegian Computing Centre, PO Box 114 Blindern, N-0314 Oslo, Norway.
2 - Department of Earth Sciences / Centre for Integrated Petroleum Research, University of Bergen, Allegt. N-5007 Bergen, Norway.
3 - Fault Analysis Group, School of Geological Sciences, University College Dublin, Belfield, Dublin.
4 - Department of Earth Science and Engineering, Imperial College, London SW7 2BP, UK.

Abstract - The multi-partner SAIGUP project was established to systematically investigate the relative importance of key geological heterogeneities in simulated production. In order to investigate the impact of the geostatistical variability the petrophysical fields were drawn repeatedly, and the variogram directions were rotated. The heterogeneities caused by the geostatistical variability in the petrophysical simulation and the variogram rotation were similar, and had a low impact on all the production responses except total water injected. Here they contributed to about 20% of the total variability.


In:, Leuangthong O. and Deutsch C. V. (eds.), Geostatistics Banff 2004; Quantitative Geology and Geostatistics, 14; Volume 2., 723-730. Springer, Dordrecht, The Netherlands.