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通过碳酸盐岩地层中的纯碳酸盐岩、缝合线缝隙物和泥质条带有机质含量和残留烃量分析表明，碳酸盐岩地层中不同的组成部分之间有机质的分布是不均匀的，其中缝合线缝隙物和泥质条带具有高的 Ｔ Ｏ Ｃ 值和较低的 Ｓ１／ Ｔ Ｏ Ｃ 值，而纯碳酸盐岩 Ｔ Ｏ Ｃ 值则很低，但其 Ｓ１／ Ｔ Ｏ Ｃ 却很高。这说明缝合线缝隙物和泥质条带发生了明显的排烃作用，而纯碳酸盐岩排烃作用不明显。因此可以认为高有机质丰度的缝合线缝隙物和泥质条带是碳酸盐岩地层烃源的主要贡献者。压溶作用对碳酸盐岩的排烃起重要作用。
The analysis of organic matter and residual hydrocarbon in pure carbonate rocks, suture seams and argillaceous stratigraphy in carbonate rocks shows that the distribution of organic matter is not uniform among the different components of carbonate rocks , In which the suture seams and argillaceous strata have high T O C values and low S1 / T O C values, while pure carbonate rock T O C values are very low, but their S1 / T O C is very high. This shows that suture liners and argillaceous mudslides have obvious hydrocarbon expulsion, while pure carbonates have no significant hydrocarbon expulsion. Therefore, it can be considered that high organic matter abundance suture seams and argillaceous strata are the major contributors to the hydrocarbon source of carbonate rocks. Pressure-dissolving plays an important role in hydrocarbon expulsion.