多层次模糊综合评价东营凹陷的含油气性  

Application of Multi-level Fuzzy Comprehensive Evaluation Method in the Hydrocarbon Potential Evaluation of Dongying Depression

作　　者：王清[1] 杨凤丽[1] 于开平[1] 孙连浦[1] 

机构地区：[1]同济大学海洋地质教育部重点实验室,上海200092

出　　处：《海洋石油》2004年第4期57-61,共5页Offshore Oil

基　　金：同济大学 2 0 0 1年理科发展基金资助项目的研究部分。

摘　　要：针对油气勘探中地质目标单元的含油气性难以进行定量的评价 ,形成有利油气目标单元的圈闭条件、油源条件、储集条件、保存条件和时空配套等主控因素受到众多的子因素影响等问题 ,提出采用多层次模糊综合评判的方法来进行含油气性的综合评价。通过对东营凹陷的北部陡坡、中央隆起、洼陷和南部缓坡等 4个二级含油气构造带的评价 ,认为北部陡坡带和中央隆起带为最有利的油气聚集带 (等级I) ,南部缓坡带中等 (等级II) ,而洼陷带较差 (等级III) ,评价结果与实际情况基本吻合。In the process of oil & gas exploration, it is difficult to make a quantitative evaluation for hydrocarbon potential of a geological target, and there are too many factors having different influence such as trap, source, deposition, preservation, temporal and spatial matching, and lots of other smaller factors are included. Multi-level fuzzy comprehensive evaluation is successfully applied to solve this problem. The procedure of ranking 4 secondary tectonic units in Dongying Depression is given as an example. The outcome of computation indicates that the northern steep slope and the central uplift are the best for hydrocarbon accumulation, and that the southern gentle slope is the second and the subsag the worst, which tallies with the latest exploration findings in this area.

关 键 词：含油气性 东营凹陷 北部陡坡带 储集条件 油气构造 圈闭条件 油气聚集带 洼陷 中央隆起带 主控因素 

分 类 号：TE122[石油与天然气工程—油气勘探] P618[天文地球—矿床学]