李红斌,王贵文,庞小娇,刘小平,王高成,舒红林,罗瑀峰,刘梦才,赖锦

• 1:中国石油大学(北京)地球科学学院
• 2:中国石油大学(北京)油气资源与探测国家重点实验室
• 3:中国石油浙江油田分公司勘探开发研究院

摘要(Abstract)：

页岩储层通常无自然产能，需要采用水平井钻井和体积压裂等手段进行商业开采，基于工程品质测井评价的页岩可压裂层段优选工作显得尤为重要。以苏北盆地古近系阜宁组页岩为例，应用阵列声波资料计算泊松比、杨氏模量等岩石力学参数，并与岩心实测资料刻度实现岩石力学参数动静态转换，以此为基础应用泊-杨法和一维岩石力学模型分别计算脆性指数与三轴地应力。综合考虑单井不同层段的脆性指数以及水平主应力差，优选了脆性指数以及脆性指数与水平最大、最小主应力差的比值作为工程品质表征参数。结合试油资料表明对于脆性指数越大、水平主应力差越小的储层，其压裂后产能越高。将苏北盆地阜宁组工程品质划分为两类：Ⅰ类高产(工程品质表征参数>2.2),Ⅱ类中-低产(工程品质表征参数<2.2),并且Ⅰ类工程“甜点”段普遍压裂出油，表明依据该参数的“甜点”分类效果较好。页岩工程品质测井评价结果，可为可压裂性层段的优选提供理论依据与技术支撑，为页岩储层钻井轨迹设计与压裂设计工作提供科学指导。

关键词(KeyWords)： 页岩油;工程品质;脆性指数;水平主应力差;测井评价;阜宁组;苏北盆地

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(42002133;42072150);; 中国石油大学(北京)科研启动基金项目(2462021YXZZ003);; 中国石油-中国石油大学(北京)战略合作科技专项(ZLZX2020-01-06-01)

作者(Author): 李红斌,王贵文,庞小娇,刘小平,王高成,舒红林,罗瑀峰,刘梦才,赖锦

DOI: 10.19509/j.cnki.dzkq.tb20210692

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