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Pore Architecture Characterization of a Basinal Tight Carbonate: an example from an Aptian Reservoir in the Bab Basin of the Middle East

M.E. Alsuwaidi1, J.F. Sarg1, H. Kazemi1, T. Steuber2, and M. Moge3

1Colorado School of Mines, Golden
2The Petroleum Institute
3Abu Dhabi Company for Onshore Oil Operations (ADCO)


The majority of carbonate reservoir rocks have been developed using conventional development schemes, due to the presence of macropores that are product of skeletal and non-skeletal allochems as well as diagenesis. In this study, the main focus is basinal carbonate reservoir rocks that lack macropores, but contain pores that are less than a micrometer in size. These rocks have high hydrocarbon saturation within the matrix microporosity, and are found in a structural trap in the Middle East. However, permeability is low and reaches a maximum of only 3 mD, as a result of the small pore sizes.


AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain