关键词: 地层水, 松辽盆地北部, 油田水, 分布特征, 环烷酸, 脂肪酸含量, 油气关系, 油气藏, 酚含量, 不同地区

Abstract: Based on large quantities of analytical data,the characteristics of the distribution of fatty acids,naphthenic acid and phenol in oil field waters and non-oil field waters of various strata in northern Songliao basin are studied and the relationship between the contents of"fingerprint marker"compounds and the accumulation of oil is discussed.Formation water can be closely related to hydrocarbon generation,migration and conservation.Organic,acids are the products from the conversion of organic matter to hydrocarbons Naphthenic acids,fatty acids were formed in source rocksand dissolved in pore water.Hence,the contents of fatty acids,naphthenic acids and phenol in oil field increase towards the boundary of oil trap main source beds and reservoirs on the basis of regional geological survey.Oil and gas accumulation can be predicted by the change in the contents of organic acids and pbenol.Through practice it is proved that they are good indicators for hydrocarbon exploration and are of great importance in searching for oil and gas.