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已有的研究表明,超压可以抑制镜质组的热演化、增加反应活化能。在EASY％R。模型的基础上,通过超压调节化学动力学反应活化能,建立了超压条件下镜质组热演化的化学动力学模型Pa％Ro,并根据黄骅坳陷歧北洼陷受超压抑制和未受超压抑制的Ro实测资料,确定了有关模拟参数。歧北洼陷港深48井明显超压(压力系数1.2~1.6),用Pa％Ro模型所预测的有机质成熟度和生烃时间与用EASY％Ro模型预测的明显不同,超压对Ro的抑制可达0.1％~0.3％,可使烃源岩进入生油门限的时间推迟1~4.4Ma。图2参34
Some studies have shown that overpressure can inhibit the thermal evolution of the vitrinite group, increasing the activation energy. At EASY% R. Based on the model, the chemical kinetic model Pa% Ro of the thermal evolution of vitrinite under overpressure condition was established by adjusting the activation energy of chemical kinetic reaction by overpressure. According to the suppression of overpressure by the overpressure in Qibei Sag of Huanghua depression Ro measured data without overpressure suppression determined the relevant simulation parameters. Significant overpressure (pressure coefficient 1.2-1.6) was observed in Hongshen 48 well in the Qibei depression, and organic matter maturity and hydrocarbon generation time predicted by the Pa% Ro model were significantly different from those predicted by the EASY% Ro model. Overpressure was positively correlated with Ro With the inhibition up to 0.1% ~ 0.3%, the time for hydrocarbon source rock to enter the oil production threshold can be delayed by 1 ~ 4.4Ma. Figure 2 Reference 34