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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 8: An Integrated Geologic and Engineering Reservoir Characterization of
the North Robertson (Clear Fork) Unit, Gaines County, Texas , by Jerry W. Nevans, James
E. Kamis, David K. Davies, Richard K. Vessell, Louis E. Doublet, and Thomas A. Blasingame
, Pages 109 - 124
Chapter 8
An Integrated Geologic and Engineering Reservoir
Characterization of the North Robertson (Clear Fork) Unit, Gaines County, Texas
Jerry W. Nevans
Fina Oil and Chemical Company
Midland, Texas, U.S.A.
James E. Kamis
BTA Oil Producers
Denver, Colorado, U.S.A.
David K. Davies
Richard K. Vessell
David K. Davies & Associates, Inc.
Kingwood, Texas, U.S.A.
Louis E. Doublet
Thomas A. Blasingame
Texas A&M University
College Station, Texas, U.S.A.
ABSTRACT
An integrated geological/petrophysical and reservoir engineering study has been
performed for a large, mature waterflood project (>250 wells, 80% water cut) at the
North Robertson (Clear Fork) Unit, Gaines County, Texas. The primary goal of the study was
to develop an integrated reservoir description for "targeted" 10-ac (4-ha)
infill drilling and future recovery operations in a low-permeability carbonate reservoir.
Integration of geological/petrophysical studies and reservoir performance analyses
provided a rapid and effective method for developing a comprehensive reservoir
description.
