济阳坳陷岩性油气藏充满度主控因素及其模糊综合评价

Main controlling factors on replete degree of lithologic oil gas reservoirs in Jiyang depression and its fuzzy synthetic evaluation

通过对济阳坳陷岩性油藏充满度的统计分析,认为砂体发育的构造部位和沉积体系是控制充满度的主要因素,砂体充满度大小是砂体埋深、类型、规模、物性等因素共同作用的结果。在此基础上,建立了充满度模糊综合评判方程及综合评判标准;分别对多个砂体进行综合评判,得出它们的模糊综合评判值,再按优劣次序进行排队。

Based on the statistical analyses of replete degree of lithologic oil reservoirs in Jiyang depression, it is considered that the main factors which control the replete degree are the tectonic position of the developed sand bodies and the sedimentary systems. The replete degree of sand bodies is the result of common action of many geological factors such as buried depth, type, scale, physical properties of sand bodies. On the basis of that, a fuzzy comprehensive evaluation equation and standards on the replete degree are developed; comprehensive evaluation can be done separately on several sand bodies, evaluation values can be scored, and be lined up with goodinferior descending priorities so as to reduce exploration risk.