摘要
判别分析是数学地质中广泛应用的一种多元统计方法,多组逐步判别分析是在判别分析的基础上采用有进有出的办法,把判别能力强的变量引入判别式,同时,将判别能力最差的变量剔除。最终在判别式中只保留数量不多而判别能力强的变量。应用此原理,结合测井、录井、完井测试等资料的气、水显示情况,选取大庆长垣南部黑帝庙油气层气藏典型井建立该地区气、水层的判别模型,以便对该地区单井进行气、水层划分。在建立判识模型后,应用回判率检验、F检验等方法对模型的显著性进行检验,其判别气、水层的总体符合率达到92.86%,应用此方法在研究区黑帝庙油气层提出试气井2口,均获得了工业产能,这表明所建立的模型是可靠的,提高了该地区气、水层识别的水平。
Discriminant analytical method is a muhivariable statistical analysis method which has been widespread used in geomathematics study. Based on this method, the step discriminant analysis method calls the high discriminatory power variables, and rejects the low discriminatory power variables, finally only high discriminatory power variables are left in the discriminant. This paper adopted the step discriminant analysis method, combing the displays of gas and water through well survey, well logging and well testing, to establish the discriminant model of gas and water in a certain gas pool in Heidimiao oil - gas reservoir of Punnan oilfield, so as to mark off the gas and water in single well in this area. After the primary discrimination model was established, corresponding test was carried out by using the method of return decision probability and F test to verify its significance. The resuh showed the average exact probability reached 92.86%. Two gas -testing wells have obtained industrial production based on the identification modeling, F test and other methods, which verified the reliability of the model . Therefore, the identification of gas and water layers can be improved in this area.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2007年第1期68-71,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
黑帝庙油气层
逐步判别分析
判别模型
识别
Heidimiao oil -gas reservoir
step diseriminant analysis
diseriminant model
identification
