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为定量研究盖层内断裂垂向封闭性,通过断裂带岩石与盖层岩石压实成岩所受压力大小的比较,利用盖层岩石排替压力和断裂对盖层封闭能力的破坏程度系数得到的断裂带内岩石排替压力,建立了一套盖层内垂向封闭性的定量评价方法。该方法可应用于含油气盆地盖层内断裂垂向封闭性的定量评价,在乌尔逊凹陷评价大一段盖层内主要断裂垂向封闭性的现场应用取得较好的效果。
In order to quantitatively study the vertical sealability of faults within the caprock, by comparing the compressive stress of rock compacted with caprock in the fault rocks and the pressure of cap rock replacement, A series of quantitative evaluation methods for the vertical sealing in the caprock are established. This method can be applied to the quantitative evaluation of the vertical sealing of faults within the caprock of a gas-bearing basin, and has achieved good results in the field application of evaluating the vertical sealing of the main faults in the first member of the Upper Wuerxun Sag.