Rock-Fluid Relationship Studies on The Windfall D-3A Reservoir and Their Application in Evaluating Gas Cycling Effectiveness


T. B. McFadzean,
Amoco Canada Petroleum Company Ltd.



The Windfall D3A reservoir in north-central Alberta is a Devonian Leduc D-3 reef structure containing sour gas, condensate and oil. This paper describes the results of recent studies on rock-fluid relationships for the Wind- fall reservoir which led to several conclusions regarding the effectiveness of the past 15 years of cycling and the importance of maintaining high voidage replacement ratios.