| Seismic signals include information on subsurface rock, fluid physical properties and geological structures. It has great significance in digging information in seismic data related to lithology and reservoir properties. Seismic attributes reflect the whole properties of seismic signals and reflect reservoir properties in different angles. As the relations between seismic attributes and the predicted objects are complicate, seismic attributes sensitive to the objects are different in different areas and reservoirs. In this dissertation, geological features, prestack seismic attributes and post-stack seismic attributes of different reservoir types are summarized in Shengli exploration province, methods to optimize select prestack and post-stack seismic attributes are studied, the analysis techniques are summarized for different types of reservoirs. They have played important roles in oilfield E&P, the contributions and innovations are as follows:Seismic attributes corresponded to different geologic bodys are established, and the prediction flow charts of different reservoir types are summarized, which have good application results.Controlled by VSPLOG, the high-frequency restoration method of seismic data is formed primarily which avoids blindness and broaden the frequency-band width of seismic data.The structural wavelet function is put forward to strengthen thin seismic information and improve the resolution of post-stack seismic data, this has achieved obvious results in Guanl area.A new optimize method of seismic attributes is developed which is called inner photograph. It's algorithm is simple, it can determine the sand-body boundaries better and restore reservoir features accurately.For the problems in usual inversions, the inversion technique of frequency division is developed, in which AVF is induced to the inversion and the inversed results are derived from SVM. Therefore, the logging wave-impedance curve is made so as to enhance the inversion stability and precision.
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