| 摘要 |
A METHOD FOR ANALYZING SEISMIC INTERVALS AND PREDICTING SUBSURFACE PETROPHYSICAL PROPERTIES THROUGH THE USE OF A NEW SET OF ATTRIBUTES KNOWN AS LINEAR SHAPE ATTRIBUTES (LSAS). THE LINEAR SHAPES FORM AN ORTHOGONAL BASIS SET DERIVED DIRECTLY FROM THE SEISMIC DATA TRACES FOR THE INTERVAL IN QUESTION. COLLECTIVELY, THE LSAS CAPTURE SUBSTANTIALLY ALL OF THE USEFUL INFORMATION CONTAINED IN THE INPUT DATA SET. THE INPUT DATA SET MAY INCLUDE ALL OR A SELECTED PORTION OF THE SEISMIC DATA TRACES FOR THE PROSPECT. PETROPHYSICAL INFORMATION OBTAINED FROM WELL LOGS AND/OR PSEUDOWELL LOGS MAY BE USED TO CALIBRATE THE LSAS. THE CALIBRATED LSAS MAY THEN BE USED FOR A VARIETY OF PURPOSES, SUCH AS PREDICTING SUBSURFACE PETROPHYSICAL PROPERTIES AT OTHER LOCATIONS OR DETERMINING THE LOCATION OF A NEW WELL. THE LSAS MAY ALSO BE USED TO DETERMINE RECONSTRUCTION ERRORS WHICH ARE A MEASURE OF THE CONSISTENCY BETWEEN THE SEISMIC DATA TRACES USED TO DETERMINE THE LSAS AND A SECOND SET OF SEISMIC DATA TRACES OR PSEUDO-WELL SYNTHETIC DATA TRACES. THESE RECONSTRUCTION ERRORS MAY BE PLOTTED ON MAPS TO GEOGRAPHICALLY LOCATE AREAS OF CONSISTENCY OR INCONSISTENCY.
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