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本文根据松辽盆地杏井资料,研究了烃类成分在青一段生油层下部和扶余油层顶部的变化规律,发现青一段下部生油层氯仿抽提物中的重质成分(如芳香烃、非烃)随着往扶余油层的靠近,其含量渐趋增高,而轻组分(如饱和烃)则逐渐减少,当进入扶余油层后,上述变化则正好相反。与法国资料对比,说明松辽盆地青一段下部生成的油气是向下运移的。进而从理论上解释了在一定条件下油气向下运移的可能性和必然性。在此基础上,本文还通过对扶余油层的油气显示情况和该油层上、下生油岩的有机地化指标情况的全面分析,从而认为:扶余油层的油源主要是青一段生油层。
Based on the data of Xingjing in the Songliao Basin, the variation of hydrocarbon composition in the lower part of the Qinglian oil reservoir and the top of the Fuyu oil reservoir was studied. It was found that the heavy components (such as aromatic hydrocarbons, non-hydrocarbons ) With the approach to the Fuyu oil layer, the content gradually increases while the light components (such as saturated hydrocarbons) decrease gradually. When entering the Fuyu oil layer, the above changes are just the opposite. Comparing with the French data, it shows that the hydrocarbons generated in the lower part of the Qing-1 Member of the Songliao Basin migrated downward. And then the possibility and necessity of oil and gas migration downward under certain conditions are explained theoretically. On this basis, this paper also through the comprehensive analysis of the oil and gas conditions in the Fuyu oil layer and the organic geochemical index of the upper and lower oil-bearing rocks, we conclude that the oil source of the Fuyu oil layer is mainly the green oil reservoir.