Research and application of prediction and identification technology for small scale fractured caverns in carbonate rock in Tahe Oilfield
In view of the characteristics of scattered distribution,complex types and difficult identification and application of small-scale fractured caverns in Tahe oilfield,conventional fractured caverns detection techniques such as inverse impedance,frequency division amplitude and clutter degree can not describe the small-scale fractured caverns well.Based on the method principle of diffraction wave recognition,the diffraction wave separation technology is used to remove the reflected wave from the seismic data and image the diffraction wave separately.The application of actual data shows that the diffraction wave separation imaging technology can improve the lateral resolution of small-scale fractured caverns,have obvious focusing imaging effect on small-scale fractured caverns,improve the prediction accuracy of small-scale fractured caverns,improve the ability of reservoir identification of fracture-vuggy reservoirs,and realize effective prediction of favorable reservoir development areas.
Tahe oilfieldOrdovician carbonate reservoirSmall scale cracks and holesDiffracted wave
万方数据
维普
