热解过程中油页岩孔隙率变化规律

为预测原位热解工艺带来的水文地质环境变化,通过控制热解温度和时间的方法研究了不同热解程度油页岩的孔隙率变化规律。从油母质热解造成油页岩孔隙率变化的机理出发,结合油页岩的热解反应速率方程,建立了热解过程中油页岩的孔隙率变化定量模型,并将理论值与实验值进行了对比验证。结果表明:该模型计算结果与实验数据吻合良好,误差较小。可见该孔隙率定量模型能够较准确地计算热解过程中油页岩的孔隙率。

Study on Porosity of Oil Shale during Pyrolysis

In order to predict the hydrogeological environment changes brought by in-situ pyrolysis process, Controlling the pyrolysis temperature and time was used to investigate the porosity change law of oil shale with different degrees of pyrolysis. Starting from the mechanism of oil shale porosity change caused by kerogen pyrolysis, combined with the pyrolysis reaction rate equation of oil shale, a quantitative model of porosity variation of oil shale during pyrolysis was established, and the theoretical and experimental values were compared and verified. The results show that the porosity data agrees well and the error is small. It is concluded that the quantitative model of porosity can accurately calculate the porosity of oil shale during pyrolysis.