Data for: Quantitative identification of diagenetic facies and controls on reservoir quality for tight sandstones: A case study of the Triassic Chang 9 oil layer, Zhenjing area, Ordos Basin

Table 1. Detrital composition of the samples in Chang 9 sandstones.
Table 2. The results of mercury injection capillary pressure (MICP) tests.
Table 3. Results of point counting for the content of chlorite, quartz overgrowth, K-feldspar and secondary pores.
Table 4. Parameters data, which can reflect the features of reservoir quality.
Table 5. The RDI interval and the mean value of the selected parameters for each diagenetic facies.

表1 长9段砂岩样品碎屑成分组成。
表2 压汞毛细管压力（mercury injection capillary pressure, MICP）测试结果。
表3 绿泥石、石英次生加大、钾长石及次生孔隙含量点计数结果。
表4 可反映储层质量特征的参数数据集。
表5 各成岩相的RDI区间及所选参数的平均值。