[1] Reservoir/Operations Geology Group, Japan Petrol. Exploration Co., Ltd., Tokyo, Japan
[2] Shell Explor./Production U.K. Ltd., Aberdeen, United Kingdom
[3] Reservoir Eng. for ConocoPhillips, Stavanger, Norway
[4] Schlumberger Data/Consult. Services, Nagaoka, Japan
[5] RWE Dea, Hamburg, Germany