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1前言以找油为目的的钻井为例，镜质体反射率（％R0）随深度增加在泥炭一无烟煤阶并非线性变化。任一口井含不易挥发沥青质及高阶煤（＞1％R0）的地层镜质体反射率（％R0）增加的速率一般大于含低阶煤的地层。鉴于镜质体反射率随深度并非线性变化，一些学者采用镜质体反射率对
For example, the reflectivity (% R0) of vitrinite does not change linearly with peat-anthracite rank as the depth increases. The formation rate of vitrinite reflectance (% R0) of strata containing non-volatile asphaltenes and high-rank coal (> 1% R0) in any well is generally higher than that of low-rank coal strata. Since vitrinite reflectance does not vary linearly with depth, some scholars use vitrinite reflectance