Fracture Detection and Analysis from a 3-D VSP Survey in Ekofisk Field

1 B030 Fracture detection and analysis from a 3-D VSP survey in Ekofisk field MU LUO ∗ NORIO ARIHARA * BRIAN J. EVANS + AND XIN-QUAN MA # * Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan + Curtin University of Technology PO Box U1987 Perth Australia 6845 # Baker Hughes CGG Joint Venture R&D London U.K. Introduction Ekofisk field in the Norwegian North Sea was discovered in 1969. However as pointed out by Sulak (1990) even after decades of production much remains to be understood. One of the major challenges in an attempt to gain a more detailed understanding