塔里木盆地塔河油田为以裂缝、溶洞为主的碳酸盐岩油藏 ,其储集层近水平方向延伸 ,横向连续性很差 ,特别是北西 南东方向储集层变异程度大。建立裂缝和溶洞模型的具体方法是 :对密度测井曲线进行标准化 ,与岩心实测孔隙度对比 ,控制数据质量后计算密度孔隙度 ;对密度孔隙度进行空间数据分析 ,得到变差函数 ,按裂缝和溶洞带水平延伸的框架模型进行条件模拟 ,建立基于井的孔隙度地质模型 ;用 13口井的密度测井曲线推导拟波阻抗曲线 ,建立整个油藏的三维地震速度模型 ,综合反演得到油藏的孔隙度模型。估算结果 ,塔河油田裂缝、溶洞的净厚度约为碳酸盐岩厚度的 5 %。由于油藏条件下的岩心分析数据非常重要 ,所以应在对油层进行酸化、压裂之前获取单层测试资料 ,以利于通过生产资料来检验模型的精度。图 5表 1参 2 The Tahe Oilfield in Tarim Basin is a carbonate reservoir mainly composed of fractures and karst caves. Its reservoirs extend horizontally and have poor lateral continuity. In particular, the variation of reservoirs in the northwestern Southwest is large. The specific methods for establishing the fracture and karst model are as follows: normalize the density logging curve, compare with the measured porosity of the core and calculate the density porosity after controlling the data quality; analyze the spatial porosity of the density porosity to get the variogram, And the horizontal extension of the cave with the framework model simulation conditions, the establishment of well-based porosity geological model; density logging curve with 13 wells derived impedance curve, the establishment of the reservoir three-dimensional seismic velocity model, the integrated inversion Porosity model of reservoir. As a result of the estimation, the net thickness of cracks and karst caves in Tahe Oilfield is about 5% of the thickness of carbonate rocks. Due to the importance of core analysis data under reservoir conditions, a single layer of test data should be obtained prior to acidizing and fracturing the reservoir to facilitate the verification of the model’s accuracy through the means of production. Figure 5 Table 1 reference 2