叠后地震储层预测技术在缝洞型储层表征中的应用

The Application of Reservoir Prediction Technique Based the Post-stack Seismic Data in Fracture-cavity Reservoir Characterization

相比常规碎屑岩油藏,缝洞型油藏在平面及纵向上储层发育模式有其特殊性,储层展布非均质性更强,使得其在储层建模及表征研究中更加依赖于地震资料的使用。利用叠后地震资料,通过分频解释技术及地球物理反演技术对塔河油田7区缝洞型储层进行了预测,效果较好。结合方法原理分析总结了2种方法的适用条件,认为针对叠后地震资料的缝洞储集体预测技术能够从不同侧面反映储集体发育及展布规律,为缝洞型油藏储层建模及表征提供定性或定量的井间储层展布约束数据体,提高表征精度。

Compared with the conventional clastic reservoirs,fracture-cavity reservoirs had special developmental patterns in the plane and vertical directions,it had a more stronger heterogeneity in reservoir distribution.So the modeling and characterization highly relayed on the application of seismic data.The fracture-cavity reservoirs in Region 7of Tahe Oilfield were predicted by using the techniques of frequency division interpretation based the post-stack seismic data and good results were obtained.The adaptability of both methods are analyzed combined with its method and principle,it is considered that the seismic fracture-cavity reservoir prediction techniques based the post-stack seismic data can be used to reflect the rules of reservoir development and distribution from different standpoints.It provides qualitative or quantitative data for the fracture-cavity reservoir modeling and characterization and improving its precision.