Abstract:

A lot of information of geology and reservoir features are contained in seismic signals. Decades to more than hundred of seismic attributes can be extracted from amplitude, frequency, phase adn waveform of seismic signals. At present, seismic attributes are interpreted by unique technology with comprehensive interpretation technology series adapted to different geologic conditions, reservoirs and data.The resolution of seismic data was enhanced with Q reverse-filter, spectra whiten and wavelet deconvolution from pre-stack and post-stack in this paper.The seismic data in  Guan 1 area are interpreted finely with many attributes such as seismic facies, seismic attribute coherence analysis and frequency spectrum division processing. Reservoir distribution and seismic facies in lower Ek₁ are predicted,which are accordance with distribution map of reservoir sediment from drilling data. 208 faults in Ek and 19 faults in Pz have been found using coherent data volume and fine interpreted result of this area. The new regular of structure shape was understand in Ek and in Pz. Geologic understand was deepened and the base of reservoir analysis was established.More than decade of river channels with area of 25 km² in Es₁ were found using coherent analysis and frequency division scan.The exploration in south slope of Dongying sag got new breakthrough.

Key words: attribute analysis, seismic attribute volume, comprehensive interpretation, reservoir prediction, Guan 1 area