松辽盆地南部海坨子地区油气成藏研究

松辽盆地南部海坨子地区扶余油层与萨尔图油层中有机包裹体有较大差异。扶余油层中有机包裹体量多 ,个体大 ,早期和晚期有机包裹体发出强的黄色荧光 ;萨尔图油层有机包裹体丰度不高 ,个体都较小 ,早期和晚期有机包裹体发出弱的浅黄色荧光。这说明萨尔图油层的烃类成熟度比扶余油层的烃类成熟度高。海坨子构造主要发生过两次成藏过程 ,早期在嫩江期末 ,晚期发生在明水期末至第三纪。扶余油层和萨尔图油层的油气来源不同 ,前者油气主要来自海坨子构造青一段烃源岩 ,后者主要来自乾安凹陷青山口组烃源岩。

Hydrocarbon accumulation in Haituozi region in southern Songliao basin

The organic inclusions of Fuyu and Saertu oil layers in Haituozi region have a great difference. The organic inclusions were enriched in Fuyu oil layer and had big sizes and very strong yellow fluorescence in the early stage and later period of hydrocarbon accumulation. The organic inclusions in Saertu layers had low richness and small sizes and showed weakly light yellow fluorescence. It is shown that the maturity of hydrocarbon in Saertu oil reservoir is higher than that in Fuyu reservoir. Haituozi structure mainly has two times of accumulation processes, e.g. early stage on the end of Nengjiang Period and later period on the end of Mingshui Period and Tertiary. But the resources of oil and gas in Fuyu layer and Saertu layer are different. The former came from the source rock of the first section of Qingshankou group in the Haituozi structure, and the latter mainly came from the source rock of Qingshankou group in Qian'an depression.