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Chapter from:
AAPG Memoir 71 : Previous HitReservoirNext Hit 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 5: Previous HitPredictingNext Hit Interwell Heterogeneity in Fluvial-Deltaic Reservoirs: Effects of Progressive Architecture Variation Through a Depositional Cycle from Outcrop and Subsurface Observations , by Paul R. Knox and Mark D. Barton , Pages 57 - 72

Chapter 5
Previous HitPredictingNext Hit Interwell Heterogeneity in Fluvial-Deltaic Reservoirs: Effects of Progressive Architecture Variation Through a Depositional Cycle from Outcrop and Subsurface Observations

Paul R. Knox
Bureau of Economic Geology
The University of Texas at Austin
Austin, Texas, U.S.A.

Mark D. Barton
Shell Development Company
Houston, Texas, U.S.A.


ABSTRACT

Early recognition of stratigraphic heterogeneity can lead to improved estimates of hydrocarbon reserves and more efficient development strategies. Although good models based on studies of modern and ancient fluvial-deltaic deposits exist for Previous HitpredictingNext Hit interwell heterogeneity, a single model applies only to genetically related deposits of a single pulse of progradation and retreat, which describes only one, or a part of one, Previous HitreservoirNext Hit. Recent studies document significant changes in depositional style in adjacent stratigraphic intervals, and a model for Previous HitpredictingNext Hit this variability is needed; therefore, we have carried out studies of outcrop Previous HitreservoirTop analogs and of reservoirs that suggest that variability is predictable if assessed within the framework of depositional cycles and that differences between adjacent high-frequency cycles can substantially impact production behavior and reserve-growth potential.

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