Calibration of Depth Imaged Seismic Data Using an Interval Velocity Scaling Method

B-04 CALIBRATION OF DEPTH IMAGED SEISMIC DATA USING AN INTERVAL VELOCITY SCALING METHOD Summary 1 A. A. CURTIS D. D. STOUGHTON D. R. HILL J. F. RATCLIFFE and T. HARTNETT BHP Billiton Petroleum 1360 Post Oak Boulevard Houston TX 77056 USA As a consequence of anisotropy and other imaging effects horizon markers extracted from 3D seismic amplitude data frequently do not tie the equivalent formation intersections determined from well data. Such mis-ties between the seismic and well-log based formation markers can be quite significant in many Gulf of Mexico fields and are likely to be present in any 3D depth