摘要
低渗透油藏在油田开发中日益重要,做为低渗透油藏显著特征的裂缝,控制着油藏流体渗流系统,制约着油藏开发效果。如何利用常规资料进行裂缝识别和建立裂缝三维模型是当前低渗透油藏开发研究的重点和难点,针对这一问题,笔者进行了有益探索。首先从相似露头区和钻井岩心2个方面对裂缝分布原模型进行深入细致研究,建立裂缝特征知识库;然后从理论角度分析利用双侧向测井识别裂缝的可行性;基于以上研究,采用岩心标定测井法,深入分析总结了利用双侧向测井进行单井裂缝识别的特征,并利用分形克利金理论对井间裂缝进行了预测,最后利用分形随机模拟技术建立了研究区裂缝三维模型。结果表明,利用上述方法建立的裂缝模型与油田开发实践比较吻合,从而证明了该方法的正确性。
With the development of petroleum industry, the importance of low permeability reservoir becomes clear. The fractures, which serve as the notable characteristics of low permeability reservoir, control the flow system of reservoir fluid and restrain the development effect. How to recognize the fractures by using the conventional data and how to build the 3D fracture model are the important and difficult points of low permeability oilfield development. Considering this problem, the author carries on helpful probe. The original model of fracture distribution is analyzed from the similar outcrop areas and the drilling cores to build the knowledge base of fracture characteristics. The practicability of recognizing fracture is discussed by the use of dual lateral logging from theoretical analysis. Based on the study above, the recognition features of single well fracture are analyzed through the use of dual lateral logging by means of core calibration logging method. And interwell fractures are predicted in terms of the fractal Kriging method. At last, the 3D fracture model of this study region is established by using the fractal stochastic simulation technique. The result shows that the fractured model, established by the method above, coincides with the fact of oilfield development, which proves that the method is correct.
出处
《断块油气田》
CAS
北大核心
2010年第4期462-465,共4页
Fault-Block Oil & Gas Field
基金
教育部高校博士点专项基金项目"裂缝性低渗透油藏非线性渗流模型"(20060425001)
关键词
低渗透
分形克利金
裂缝
三维模型
low permeability, fractal Kriging method, fracture, 3D model.
