孙吴-嘉荫盆地太平林场组烃源岩生物标志化合物地球化学特征  

Geochemical characteristics of biomarkers of source rocks from Taipinglinchang formation in Sunwu-Jiayin Basin

作　　者：高福红[1] 樊馥[1] 高红梅[1] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061

出　　处：《中国石油大学学报（自然科学版）》2010年第4期33-37,66,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家油气资源战略选区专项课题(XZ-2004-7)

摘　　要：应用气相色谱和色谱-质谱等分析方法,对孙吴-嘉荫盆地太平林场组湖相暗色泥岩样品的地球化学特征进行研究。结果表明:太平林场组烃源岩可溶烃含量已达到烃源岩标准,族组分中可溶烃类含量高,饱/芳比值高,有机质类型好;正构烷烃及生物标志化合物特征均反映了烃源岩具有未熟-低熟特点;烃源岩有机质具有混合型母质的特点,菌藻类低等生物在成烃母质中含量丰富;烃源岩沉积和保存于盐度较高的还原-弱还原环境,水体存在着化学成分分层,有利于有机质的埋藏保存,可以为孙吴-嘉荫盆地的油气生成提供物质基础。The geochemical characteristics of black mudstone from the lacustrine facies in Taipinglinchang formation, Sunwu- Jiayin Basin were researched by gas chromatography and gas chromatography-mass spectrometer. The results indicate that the content of soluble hydrocarbon in the black mudstone from Taipinglinchang formation has reached the source rocks standard, with high content of soluble hydrocarbon in the group composition, high ratio of saturated/aromatic hydrocarbons and good organic type. The both properties of the n-pentane and the biomarkers demonstrate the characteristic of prematurity-low maturation of source rocks. The organic material of source rock possesses character of the mixed parent material, with the rich con tent of thallophyte in the organic sources. The source rocks deposited and preserved in the reductive-weakly reductive circumstance with high salinity. The water with chemistry stratify is better for burial and preservation of organic material, which can provide material foundation for the oil and gas forming in Sunwu-Jiayin Basin.

关 键 词：孙吴-嘉荫盆地 早白垩世 烃源岩 生物标志化合物 

分 类 号：TE121.1[石油与天然气工程—油气勘探]