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在总结前人工作的基础上,通过理论分析、实验结果和油气田实际资料,对厚度在泥岩盖层的空间分布、毛细管、压力和烃浓度封闭能力中所起的作用进行了深入全面研究。认为:厚度越大,泥岩盖层的空间分布面积就大(即使被断裂破坏,也不易失去横向分布的连续性),毛细管封闭能力、压力封闭能力和烃浓度能力越强;相反,泥岩盖层空间分布面积小(被断裂破坏易失去横向分布的连续性),毛细管封闭能力、压力封闭能力和烃浓度封闭能力就弱。
On the basis of summarizing the work of predecessors, the effects of thickness on the spatial distribution of caprock caprock, capillaries, pressure and hydrocarbon concentration sealing capacity were studied in depth through theoretical analysis, experimental results and actual oil and gas field data. It is believed that the larger the thickness, the larger the spatial distribution of mudstone caprocks (even the continuity of lateral distribution will not be lost even if it is ruptured by rupture), the stronger capillarity sealing ability, pressure confining capacity and hydrocarbon concentration ability; on the contrary, the mudstone caprock Small area of space distribution (easy to lose by the failure of the transverse distribution of fracture continuity), capillary sealing capacity, pressure sealing capacity and hydrocarbon concentration of the sealing capacity is weak.