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Chapter from:
AAPG Memoir 71 : Reservoir Characterization-Recent Advances
Edited by Richard A. Schatzinger and John F. Jordan
Copyright 
1999 by The American Association of
Petroleum Geologists. All rights reserved.
Memoir 71, Chapter 24: Characterization and Estimation of Permeability Correlation
Structure from Performance Data , by Mohammed Y. Al-Qahtani and Iraj Ershaghi , Pages 343
- 358
Chapter 24
Characterization and Estimation of Permeability Correlation
Structure from Performance Data
Mohammed Y. Al-Qahtani
Saudi ARAMCO
Dhahran, Saudi Arabia
Iraj Ershaghi
University of Southern California
Los Angeles, California, U.S.A.
ABSTRACT
In this study, the influence of permeability structure and correlation length on the
system effective permeability and recovery factors of 2-D (two-dimensional)
cross-sectional reservoir models under waterflood is investigated. Reservoirs with
identical statistical representation of permeability attributes are shown to exhibit
different system effective permeability and production characteristics, which can be
expressed by a mean and a variance. The mean and variance are shown to be significantly
influenced by the correlation length. Detailed quantification of the influence of
horizontal and vertical correlation lengths for different permeability distributions is
presented.
