濮城油田南区沙二上4-7砂层组低渗透储层流动单元研究

利用孔隙度、渗透率、油藏品质指数和流动层指数4个岩石物性参数，应用交会图法和聚类分析方法对濮城油田南区沙二上4-7砂层组低渗透油藏储层流动单元进行了划分。将其取心井和非取心井划分为A，B，C，D4类流动单元，并依据沉积微相分布特征，通过井间流动单元预测，确定了流动单元的空间展布。研究结果表明，在4类流动单元中，A类具有最好的储集物性，主要存在于分流河道下部；B类储集物性较好，主要存在于分流河道和河口坝中；C类储集物性一般；D类储集物性最差。实际应用效果说明流动单元法可以用来预测储层剩余油分布。

Flow units of low permeability reservoir of 4-7 sand sets in upper Es2 in south of Pucheng Oilfield

The crossplot technique and duster analysis method were applied to classify and determine the flow units of the low permeability reservoir of 4 - 7 sand sets in upper Es2 using the petmphysical parameters of porosity, permeability, reservoir quality index and flow index in south of Pucheng Oilfield. And four types of reservoir flow units were classified, which are type A, B, C and D, According to the micmfacies distribution, the spatial distribution of the flow units was determined by interwell flow units prediction. Within the four types of flow units, type A has perfect reservoir property and distributes in lower part of distributary channds. Type B has fine reservoir property and distributes in distributary channels and river mouth bars. Type C has mean reservoir property, and type D has the worst reservoir property. The practical application shows that this method can be used to predict the remaining oil distribution.