undercompaction shale

The distribution of the undercompaction is related to sedimentary velocity and the distribution of impermeable shale vertically and laterally.

纵向和平面上分布特征表明欠压实带的分布主要与沉积速率和非渗透泥岩的分布有关；

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Four undercompaction zones are divided on the undercompaction curves of shale in the Eogene system of De Nan depression.

德南洼陷下第三系泥岩欠压实曲线可划分四个欠压实带；

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It is found that the fractures were developed in the crust around the uncompacted belt. The distribution of the undercompaction is related to sedimentary velocity and the distribution of impermeable shale vertically and laterally.

本区水力破裂发生于欠压实带周围的壳中。纵向和平面上分布特征表明欠压实带的分布主要与沉积速率和非渗透泥岩的分布有关；

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