模糊综合评判法评价尕斯库勒E3^1油藏储层

Fuzzy comprehensive evaluation method for evaluating E3^1 reservoir of the Gasikule oilfield in Qinghai, China

利用模糊综合评判数学模型方法,选取平均砂岩厚度、平均有效厚度、平均渗透率、变异系数、孔隙度、油砂体钻遇率6个评价参数,对尕斯库勒E31油藏储层进行模糊综合评判,将该油藏储层划分为3个大类、9个亚类,尕斯库勒E31油藏储层主要为二类油藏储层。

Heterogeneity is very univsersal in every reservoir, but at same time, it is the important basis of development strategy and technological steps in the stage of oilfield development. Be known to all, evaluation of reservoirs is one of the important tools and ways to discern this hetergeneity. The paper evaluates the E3^1 reservoir of the Gasikule oilfield by using the fuzzy comprehensive evaluation method and selecting six evaluation parameters （the mean thickness of sandstone, the mean effective thickness, mean permeability, coefficient of variation, porosity, ratio of drilling into sandbody）. At last, the evaluation results indicates that E3^1 reservoir of the Gasikule oilfield can be classified into three types and nine subtypes, and it belongs to the second type reservoir primarily.