大兴砾岩体地震识别技术及其应用效果
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摘要
大兴砾岩体发育于廊固凹陷西部大兴断层下降盘,在兴9井区获得非常好的勘探开发效果后,砾岩体勘探一直未取得新的突破。近年来,通过应用WEFOX成像处理系统,使地震资料成像效果得到大幅度改善,借助层序地层分析技术、地震属性提取与分析技术以及地震相分析技术的应用,大兴砾岩体得到有效识别。在此基础上,通过多参数分析等技术手段,开展了储层预测及砾岩体沉积微相研究,指出优质砾岩体储层的分布规律,合计预测砾岩体有利面积161km2,预测天然气资源量710×108m3、石油资源量1000×104t,预示了大兴砾岩体的勘探潜力。根据已实施的钻井效果证实,这套方法是适用而且有效的。
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 × 10 8 m 3 and 1000 × 10 4 t 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.
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 × 10 8 m 3 and 1000 × 10 4 t 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.
引文
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[5]朱庆忠,李春华,杨合义.廊固凹陷大兴砾岩体成因与油气成藏[J].石油勘探与开发,2003,30(4):34～36.
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