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应用固体~(13)C-NMR技术对下古生界,海相碳酸盐岩干酪根的化学组成和结构特征进行研究,提出应用该技术所测算的干酪根结构参数“芳核平均结构尺寸”能较准确地反映碳酸盐岩的热成熟度。首次提出芳核平均结构尺寸与镜质体反射率之间的关系在干酪根的热演化过程中具有“三段式”特征。利用这一成果对华北地区下古生界成熟度进行了测定,与地质背景甚为吻合。
The chemical composition and structural characteristics of the Lower Paleozoic and marine carbonate kerogen were studied by solid-13 C-NMR. The kerogen structure parameters “average aromatic nucleus structure size ”Can more accurately reflect the thermal maturity of carbonate rock. It was first proposed that the relationship between the average size of the aromatic nucleus and the vitrinite reflectance has a “three-stage” characteristic during the thermal evolution of the kerogen. Based on this result, the maturity of Lower Paleozoic in North China was determined, which is in good agreement with the geological background.