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通过对松辽盆地南部5口井井下油气化探测试结果的归纳分析发现:顶空气轻烃指标在气井、油气显示井中检出率较高,在干井中检出率较低;岩屑酸解吸附烃的参评作用并不突出,只能起辅助作用;异常井段的顶空气轻烷烃比值图显示出该地区的气井有偏干气的特征。
Through the induction analysis of downhole oil and gas geochemical test results of 5 wells in the southern part of Songliao Basin, it is found that the detection index of headspace light hydrocarbons is high in gas wells and hydrocarbon wells, and the detection rate is lower in dry wells; The participation of adsorbed hydrocarbons is not prominent, and can only play an auxiliary role; the top-air light-alkane ratio diagram of abnormal wells shows that the gas wells in this area are characterized by partial dry gas.