针对苏里格气田各类储层流动单元质量与规模认识不清等问题,运用聚类分析方法,对取心井流动单元的储层参数进行聚类分析,将流动单元划分为3类,结合其岩心及镜下薄片分析,剖析3类流动单元的岩性特征、储层质量与渗流特征.利用储层地质知识库对流动单元平面形状进行论证,利用测录井资料统计其垂向发育规模,进而求取其规模范围.同时,基于试井和产量不稳定分析方法,界定其主要渗流平面规模.提出面状指数概念,定量表征了流动单元的连通性,通过反推计算,验证流动单元的规模范围.研究结果表明:该区流动单元长宽比为2.0~2.5,宽厚比为60左右,垂向连续厚度为3~7 m,平面规模为0.10~0.44 km2,渗流平面规模为0.2~0.3 km2;后期井网加密范围应控制在0.3 km2左右.该研究结果与方法对后期井网加密、识别连通砂体具有一定的指导意义.%To solve the problem in Sulige gas field of unclear understanding in the quality and scale of flow units in various kinds of reservoirs,clustering method is used for cluster analysis of reservoir parameters for flow units in co-ring wells. The flow units are divided into three categories,for which the lithologic characteristics,reservoir quality and percolation characteristic are analyzed. The planeform of flow units are verified using geological knowledge base of the reservoir and the vertical development scale is summarized with logging and mud logging data,which is then used to obtain the scale range. Based on well testing and production transient analysis,percolation planar scale is defined. Planar index is proposed to quantitatively characterize the connectivity of flow units and the scale range of flow units can be verified through reverse-reasoning calculation. The research results show that the length breadth ratio is 2. 0~2. 5,width thickness ratio is about 60,vertical continuous thickness is 3~7 m,planar scale is 0. 10~0. 44 km2 and planar scale of percolation is 0. 2~0. 3 km2 for the flow units. Further infilled drilling density should be controlled at around 0. 3 km2 . The research result and method provide guidance to further infilled drilling and identification of continuous sand bodies.
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