岩性油气藏 ›› 2018, Vol. 30 ›› Issue (3): 112123.doi: 10.12108/yxyqc.20180313
翟文宝1, 李军1, 周英操2, 柳贡慧1,3, 黄涛1, 宋学锋1
ZHAI Wenbao1, LI Jun1, ZHOU Yingcao2, LIU Gonghui1,3, HUANG Tao1, SONG Xuefeng1
摘要: 影响页岩储层可压裂性的因素较多,目前难以建立连续且完整的页岩储层可压裂性评价方法。基于测井资料可以较连续、完整地获取地层信息的特点,在考虑页岩脆性指数、矿物组成、含气性、断裂韧性等因素对可压裂性影响的基础上,利用层次分析法建立长水平井段页岩储层可压裂性评价模型,并通过引入突变理论,形成一种新的页岩储层可压裂性评价方法。分别利用基于突变理论和层次分析法的可压裂性评价方法,对四川盆地威远地区的1口水平井进行可压裂性评价,并将评价结果与微地震监测的该井页岩储层压裂后裂缝的发育情况和依据测井资料进行的储层分类情况进行对比。结果表明,基于突变理论的11级压裂段可压裂性评价结果与依据测井资料的储层分类结果及微地震监测的压裂后有效压裂体积的分布结果均吻合较好。该研究成果可为威远地区压前评价以及提高增产改造效果等提供理论依据。
中图分类号:
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