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区带油气聚散是一个多因素的、极为复杂的地质历史过程,油气的最终聚集量更是人们极为关注的问题。本文提出一整套实用的油气聚集、散失量计算方法:区带供油气计算;油在运载层中残留量计算;气在运载层中被岩石吸附量计算;气在储集层中扩散量计算。通过对比供油气量、油气总散失量及圈闭容积三者的关系,建立起计算区带油气聚集量平衡方程,从而为盆地数值模拟的软件设计及油气资源评价提供一条切实可行的途径。
Zone concentration of oil and gas is a multi-factor, extremely complex process of geological history, the final concentration of oil and gas is even more a matter of great concern to people. This paper presents a set of practical calculation methods for the accumulation and loss of oil and gas: the calculation of oil and gas in the zone; the calculation of residual oil in the carrier layer; the calculation of the amount of gas adsorbed by rock in the carrier layer; and the diffusion of gas in the reservoir. By comparing the relationship between the amount of oil and gas supplied, the total amount of oil and gas lost and the trapped volume, a balanced equation for the accumulation of oil and gas in the zone is established, which provides a practical way for software design of basin numerical simulation and evaluation of oil and gas resources.