• 责任者：Bai Gunjun (Research Institute ; CNOOC ; Beijing 100027 ; China) ; Zhao Rumin
• 刊名：Geophysical Prospecting for Petroleum
• 出版年：2011
• 卷期：50(5)
• 关键词：地震勘探 ; seismic exploration
• 页码：p.513-516
• 图表：5 illus., 12 refs.
• 分类号：1600
• issnNo：ISSN1000-1441
• isbnNo：CN32-1284/TE

The complex faulted system in AA Block is characterized by short extended distance and small fault throw, and the faults has bad continuity and uncertain contact relationship, which leads to the difficulty in the fault identification by conventional seismic interpretation. Aiming at the problem, the authors adopted the improved wavelet transform frequency division technique to study the optimum imaging frequency band (that is the dominant frequency band). In the optimum imaging frequency band, by browsing the phase slices with different frequency, the slices with clearest and most comprehensive fault combination relationship were optimized. Then, by observing its phase delaying characteristic, fine fault interpretation and faulted system identification were well done. Actual application shows that dominant frequency band phase analysis technique can recognize more discontinuous information of formations.