Fractured reservoirs contain a significant proportion of the global hydrocarbon reserves; however, they commonly exhibit unpredictable and extreme production behaviour. To develop such reservoirs it is necessary to obtain the best understanding possible of the fracture network and its impact on the fluid flow within the reservoir, using the full range of geoscience and engineering datasets available at all scales. This book presents an overview of current techniques and the latest technologies used to understand and exploit fractured reservoirs. The contributions are organized into sections on outcrop analogues, the application of geophysical techniques for fracture detection and imaging, numerical and analogue modelling and case studies from fields in the Middle East, Europe and North America. A number of the case studies also consider ways of assessing uncertainties in fracture geometry description and the implications for effective reservoir management.
The Khaviz Anticline: an outcrop analogue to giant fractured Asmari Formation reservoirs in SW Iran
Published:January 01, 2007
O. P. Wennberg, M. Azizzadeh, A. A. M. Aqrawi, E. Blanc, P. Brockbank, K. B. Lyslo, N. Pickard, L. D. Salem, T. Svånå, 2007. "The Khaviz Anticline: an outcrop analogue to giant fractured Asmari Formation reservoirs in SW Iran", Fractured Reservoirs, L. Lonergan, R. J. H. Jolly, K. Rawnsley, D. J. Sanderson
Download citation file:
The carbonate reservoirs in the Late Oligocene—Early Miocene Asmari Formation in the Dezful Embayment of SW Iran are characterized by low matrix permeability, and effective drainage is dependent on the occurrence of open fractures. Limited information on fracture orientation and fracture density is available from core and borehole image data, and high-quality/high-resolution three-dimensional seismic is often lacking in this area. Well and core data do not contain information on important fracture parameters like length distribution, crosscutting relationships, fracture density v. lithology and bed thickness. The understanding of fracture distribution and formation in the region and their effects on fluid...