摘要
塔东南坳陷江尕勒萨依构造带杨叶组烃源岩有机质丰度较高,且已成熟,是该区的主力烃源岩。通过对江尕勒萨依构造带的4块油砂及4块烃源岩样品的饱和烃气相色谱、色谱-质谱等地球化学分析,并对油、岩的沉积环境、成熟度等参数进行综合对比后认为,研究区湖相泥岩与煤系泥岩存在较大的差异,杨叶组湖相泥岩母源为高等植物与低等生物混源,杨叶组与康苏组煤系泥岩则以高等植物输入为主;艾沙汗托海与其格勒克油砂同源,源岩为杨叶组发育的湖相泥岩;推测研究区存在近源油气藏,可能发育以艾沙汗托海为代表的近源垂向运移和以其格勒克油砂为代表的近源侧向运移2种成藏模式。
The source rock of Yangye formation in Jianggalesayi structural belt of Tadongnan depression in southeastern Tarim basin is characterized by high organic matter abundance and maturity, being as the major source rock in this area. This paper presents the geochem- ical analyses of chromatogram and chromatogram-mass spectrum of core samples of four oil-sands and four source-rocks from the Jianggale- sayi structural belt and the comprehensive correlation of parameters of sedimentary environment of oils, source rocks and maturity. It is sug- gested that there is a big difference between the lacustrine mudstone and the coal measure shale in this area as follows： The lacustrine mud- stone of Yangye formation is originated from the mixed source of higher plants and lower organisms, the coal measure shales of Yangye and Kangsu formations are dominated by the higher-plants origin; the oil sands from the Aishahantuohai and Qigeleke belong to the same source supply and the source rock is the lacustrine mudstone of Yangye formation. It is inferred that there could be two types of pool-form- ing models： the one is near-source vertical migration reservoir dominated with the Aishahantuohai oil sand, and the other is the near-source lateral migration one dominated with the Qigeleke oil sand.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2013年第3期287-290,共4页
Xinjiang Petroleum Geology
基金
全国油气资源战略选区调查与评价国家专项(2010GYXQ-02-06)
