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本文应用时温指数(TTI)方法,粗略地测算了松辽盆地内古龙凹陷—大庆长垣地区不同地质时期的生油成熟范围及生油量。认为大庆长垣油气藏可能要到老第三纪末期才形成现在规模。对 TTI 法的应用,在做法上作了一些改进。认为应根据盆地特点确定n=0 的温度段,并提出筒易的推算方法。从而可以把生油母质因素考虑进去。本文还提出用绘制盆地不同地质时期各生油层的 TTI 等值线图的方法,圈定出盆地各生油层在不同地质时期的生油成熟范围。通过对比分析计算,可以对盆地的生油能力、生油层的成熟时期,发展阶段及油藏形成时期作出推断。
In this paper, the temperature maturation index (TTI) method was used to roughly estimate the oil mature range and oil production in different geological periods in the Gulong Sag-Daqingzhangyuan area in the Songliao Basin. That the Daqing Changguan reservoirs may not be until the end of the old Tertiary formation of the present scale. The application of TTI method, made some improvements in practice. It is considered that the temperature range of n = 0 should be determined according to the characteristics of the basin, and the estimation method of tube easy is proposed. Which can take into account the parent material factors into the oil. The paper also proposes to draw the TTI contour map of each oil layer in different geologic periods in the basin to delineate the mature range of oil generation in different geological periods of each oil reservoir in the basin. Through comparative analysis and calculation, it is possible to infer the oil generating ability of the basin, the mature period, the development stage and the reservoir formation period of the oil reservoir.