关键词: 砾岩扇, 层序地层, 地震相, 储层预测, 油气检测

Abstract: Daxing conglomerate bodies developed in the declining disc of Daxing fault in the western part of Langgu Depression. Good results of exploration and development have been achieved in Xing-9 Well area, but no fresh breakthroughs have been made in exploration of conglomerate bodies. In recent years, application of Wefox imaging and processing system has significantly improved the imaging results of seismic data. Daxing conglomerate bodies are effectively identified thanks to application of sequential stratigraphic analysis technology, seismic attribute acquisition technology and seismic facies analysis technology. Based on those efforts, the law for distribution of high-quality conglomerate body reservoirs is found with the help of analysis of various parameters, the prediction of reservoir and the study of the sedimentary microfacies of Daxing conglomerate bodies. The predicted favorable area of conglomerate bodies is 161 square kilometers in aggregation while the predicted natural gas and oil reserves are 710 × 108m3 and 1000 × 104t respectively, indicating that Daxing conglomerate bodies have a great potential for exploration. The results of drilled wells have confirmed that this set of method is applicable and effective.