吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (5): 1341-1351.doi: 10.13278/j.cnki.jjuese.201705102
张焕旭1, 陈世加1,2, 路俊刚1,2, 刘超威3, 陈娟4, 李勇2, 徐坤2
Zhang Huanxu1, Chen Shijia1,2, Lu Jungang1,2, Liu Chaowei3, Chen Juan4, Li Yong2, Xu Kun2
摘要: 在致密油成藏动力已有认识的基础上,从力的性质和作用效果的角度,对比分析了推动石油在致密储层中运移的"膨胀力"与常规储层情况下浮力之间的区别。论述了在"膨胀力"作用下,石油在理想致密砂岩模型中的运移模式、运移距离及致密油藏扩张规律。基于以上认识并结合实例,建立模型从动力学的角度分析了致密砂岩中隔、夹层及裂缝对石油运移富集的影响。分析认为:由于致密油与常规储层油藏在运移动力及运移模式上的差别,致密砂岩中隔、夹层将会在一定程度上阻碍石油的运移,造成成藏上物性较好的"空白带";在致密砂岩裂缝型油藏中,与裂缝直接接触物性较好的砂体是最具可能性的石油聚集区带。
中图分类号:
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