Reservoir prediction method and device

The invention discloses a reservoir prediction method and device, and the method comprises the steps: determining an effective frequency band and a peak frequency according to the amplitude spectrum of seismic data of a target layer, carrying out the decomposition of the seismic data of the target l...

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Bibliographische Detailangaben
Hauptverfasser: FENG JIANGUO, SUN XING, MA HUI, CAO LAISHENG, HAN YUCHUN, CHEN ZHIGANG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a reservoir prediction method and device, and the method comprises the steps: determining an effective frequency band and a peak frequency according to the amplitude spectrum of seismic data of a target layer, carrying out the decomposition of the seismic data of the target layer to obtain multi-frequency seismic data, and setting the frequency information of the multi-frequency seismic data according to an incident angle to obtain a pre-stack AVO gather; determining low-frequency frequency gradient data corresponding to the low-frequency pre-stack AVO gather and high-frequency frequency gradient data corresponding to the high-frequency pre-stack AVO gather; determining target layer fluid attribute data according to the difference parameter of the low-frequency frequency gradient data and the high-frequency frequency gradient data; and extracting reservoir prediction parameters of the fluid attribute data of the target layer to determine the reservoir distribution of the target layer.