摘要
在运用地化录井资料判别油水层的过程中,存在油水界限划分难的问题。通过对乌尔逊凹陷107组数据进行相关分析,优选含油气总量、原油轻重组分指数、测井岩石孔隙度作为判别油层的参数,运用多元判别分析方法,建立了研究区油水层划分的判别函数,并在二维平面交会图中将油水层界线直接划分出来,不仅实现了运用多个评价参数共同参与油水层的判识,而且能够将判识结果快捷、直观地展示出来。将原始数据用判别函数回代分类进行验证,该方法的总体判别准确率高达90.7%,较好地解决了单项资料在油气水判识方面判准率低的问题。
During the identification process of oil and water layers by geologging data,there is a problem that it is difficult to distinguish the boundary of oil and water layers.In this paper,the parameters such as Pg (the total volume of oil and gas),Ps (the ratio of light elements to weight ) and (the rock porosity) were chosen for correlation analysis to identify oil and water layers.Using multiple discriminating analysis,the discriminating functions were constructed by means of the geochemical logging data in Wu′erxun sag.And then,the result can be displayed clearly in the cross-plot of discriminating functions.Thus,different parameters can be used together to identify oil and water layers quickly,conveniently and clearly.After inputting the crude data into the discriminating functions,an accuracy rate up to 90.7% is obtained.Therefore,the present problem of low accuracy rate in identifying oil and water layers was solved.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2010年第4期35-36,47,共3页
Petroleum Geology and Recovery Efficiency
关键词
多元判别
地化录井
油水层
交会图
乌尔逊凹陷
multiple discriminating analysis
geologging
oil and water layers
cross-plot
Wuerxun
