用灰聚类方法定量分析剩余油潜力大小

在常规地质信息和生产开发动态资料综合分析的基础上 ,可以应用灰聚类分析法来定量评价剩余油潜力。以孤东油层七区西 6 - 1小层为例 ,提取了剩余油潜力区的有效厚度、孔隙度、含油饱和度、储层非均质系数、沉积相、构造形态、砂体位置、射孔完善程度、注采完善程度等聚类评价指标 ,建立了各指标的白化函数 ,并采用复式加权法确定了各指标的灰聚类权 ,最终判别结果以概率最大的聚类系数确定 ,从而实现了潜力井区剩余油潜力大小的定量划分 ,为矿场挖潜措施的优化选择提供了指导

Identification of the potentiality of remaining oil by grey-clustering analysis

On the basis of synthetically analyzing the routine geology information and development data, the potentiality of the area rich in remaining oil can be estimated quantitatively by the grey clustering analysis. In this paper, clustering indices, such as efficient thickness, porosity, oil saturation, heterogeneity coefficient, sedimentary facies, structure configuration, sandbody location, perforating degree, and so on, are picked out from the potential area in the west 7 th block, Gudong oilfield. The brighten function and clustering weightiness of these indices are also determinated. Based on the maximal clustering coefficient, one can identify the most potential area(s) quantitatively.