赵军,闫文雯,徐通,白雪晶,张洪谋,马继升,杨威,杨裕庆,赵强,薛东安,李卓,李思涵,丛琳

• 1:中国石油大港油田有限责任公司勘探开发研究院
• 2:中国石油大庆油田有限责任公司第十采油厂
• 3:中国石油大庆油田有限责任公司勘探开发研究院
• 4:东北石油大学

摘要(Abstract)：

基于扶余油层和杨大城子油层典型河道砂岩岩心样品，利用CT扫描物理实验和数字岩心重建技术，开展低渗透砂岩微观孔隙结构表征及渗流机理分析。通过矿物组分定量分析和扫描电镜拼图成像技术，识别出岩心矿物种类及其含量，划分出粒间孔、粒内孔和填隙物内孔共3种孔隙类型。针对总孔隙空间进行等效半径分布曲线计算，呈现明显的双峰结构，峰值主要集中在约50μm和约1μm。利用重构的数字岩心模型模拟油水两相渗流，模拟结果显示，扶余油层油水共渗区较宽，残余油饱和度为30%～45%;杨大城子油层油水共渗区较窄，残余油饱和度为40%～55%。在毛管力和亲水性的作用下，水相优先进入小孔道，小孔道先于大孔道形成水锁，相较于扶余油层，杨大城子油层的喉道半径小，数量多，更易形成水锁，残余油饱和度较高。

关键词(KeyWords)： 扶余油层;杨大城子油层;数字岩心;孔隙结构;渗流机理;朝阳沟阶地

Abstract:

Keywords:

基金项目(Foundation): 黑龙江省自然科学基金优秀青年项目(YQ2019D002)

作者(Author): 赵军,闫文雯,徐通,白雪晶,张洪谋,马继升,杨威,杨裕庆,赵强,薛东安,李卓,李思涵,丛琳

DOI: 10.19509/j.cnki.dzkq.2022.0111

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