一种数学方法在气层产能分类中的应用  

A mathematical method in gas reservoir capacity classification

作　　者：袁珂[1] 刘鹏[1] 常亮[1] 郝伟[1] 

机构地区：[1]中国石油长庆油田分公司第二采气厂,陕西榆林719000

出　　处：《石油化工应用》2010年第5期59-62,共4页Petrochemical Industry Application

摘　　要：通过鄂尔多斯盆地靖边气田中二叠统石盒子组盒_8段储层的试井结果,挑选出若干个气层、气水层、水层以及干层作多元判别分析,运用多元逐步判别建立能在研究区范围内通用的气层、水层和干层的判别方程来对全区的井进行气水层划分,在判别结果的基础上对盒_8四个小层进行含气区块的划分。针对本次测井识别划分的类型多,类型之间又分不同的层次,而怯同一个测井变量对划分不同类型产层所起的作用又不尽相同,各个测井变量之间也具有很强的模糊性的特点,我们提出应用多级多元判别的方法,对判别出来的气层用多级多元判别方程来判别它的产层特征,总共把产层分为3类,非工业层、基本工业气层和高产工业气层。在产层判别出来的结果基础上划分出有利产层区。Based on well test results 8 of Shihezi Formation in Jingbian gas field reservoir, picking up some gas pay samples,gas and water pay samples,water pay samples and dry pay samples for multiple discriminant analysis by whichⅠestablish gas pay,water pay and dry pay discriminant function which is available in region of interest to divide gas pay and water pay.It is gas bearing block of all four sublayers in he 8 member that has been divided on the basis of discriminant results.We propose multistage multiple analysis to discriminate deliverability feature of gas pays which have been discriminated by multiple discriminant analysis,because it is many discriminant types that need divide,and it need distinguish different member in the same type,and the same log parameter plays different role in dividing different types of producing pay,and there are strong vagueness among different log parameters.We classify production pay to three types which are non-commercial gas pay,basal commercial gas pay and high production gas pay.We divide the range of profitable producing pay in the basis of discriminatory results.

关 键 词：靖边气田 石盒子组 产能分类 鄂尔多斯盆地 

分 类 号：TE328[石油与天然气工程—油气田开发工程]