西南石油大学学报(自然科学版) ›› 2016, Vol. 38 ›› Issue (5): 157-164.DOI: 10.11885/j.issn.16745086.2015.04.03.13

• 油气化学工程 • 上一篇    下一篇

三元复合驱后关键储层特征参数实验研究

赵凤兰1,2,3, 李子豪1,2,3, 李国桥4, 宋兆杰1,2,3, 侯吉瑞1,2,3   

  1. 1. 中国石油大学(北京)提高采收率研究院, 北京 昌平 102249;
    2. 中国石油三次采油重点实验室低渗油田提高采收率应用基础理论研究室, 北京 昌平 102249;
    3. 石油工程教育部重点实验室, 北京 昌平 102249;
    4. 中国石油大庆油田有限责任公司第二采油厂, 黑龙江 大庆 163414
  • 收稿日期:2015-04-03 出版日期:2016-10-01 发布日期:2016-10-01
  • 通讯作者: 赵凤兰,E-mail:zhaoflan123@163.com
  • 作者简介:赵凤兰,1973年生,女,汉族,山东商河人,副研究员,博士,主要从事油田化学和提高采收率方面研究。E-mail:zhaoflan123@163.com;李子豪,1991年生,男,汉族,湖北荆州人,硕士,主要从事提高采收率方面研究。E-mail:sydxlzh@126.com;李国桥,1981年生,男,满族,黑龙江双城人,高级工程师,硕士,主要从事三次采油方面室内研究工作。E-mail:liguoqiao_2001@163.com;宋兆杰,1985年生,男,汉族,山东聊城人,副研究员,博士,主要从事油藏数值模拟、缝洞型油藏提高采收率等方面的研究工作。E-mail:songzhaojie1210@163.com;侯吉瑞,1965年生,男,汉族,吉林九台人,教授,博士,主要从事提高采收率与油田化学相关机理方面研究。E-mail:houjirui@126.com
  • 基金资助:
    国家重大科技专项示范工程(2011ZX05052);国家自然科学基金(51174216)。

Variation of Key Parameters of Reservoir Characteristics by ASP Flooding

ZHAO Fenglan1,2,3, LI Zihao1,2,3, LI Guoqiao4, SONG Zhaojie1,2,3, HOU Jirui1,2,3   

  1. 1. Enhanced Oil Recovery Research Institute, China University of Petroleum(Beijing), Changping, Beijing 102249, China;
    2. EOR Applied Basic Theory Research Institute in Low Permeability Oilfields, Key Laboratory of Tertiary Oil Recovery, CNPC, Changping, Beijing 102249, China;
    3. Key Laboratory of Petroleum Engineering, China Ministry of Education, Changping, Beijing 102249, China;
    4. No.2 Oil Production Company, Daqing Oilfield Limited Company, Daqing, Heilongjiang 163414, China
  • Received:2015-04-03 Online:2016-10-01 Published:2016-10-01

摘要: 确定三元复合驱对储层关键物性特征参数变化的影响程度是保证三元复合驱应用效果的重要前提。利用岩芯驱替及原子力显微镜探测等实验,对大庆油田某区块三元复合驱前后岩芯润湿性、敏感性、孔隙度与渗透率等物性参数的变化规律进行系统评价和分析。相对渗透率测定结果表明三元复合驱后储层岩石润湿性会发生改变,亲油性储层岩芯可反转为亲水润湿性;敏感性实验表明,三元复合体系对储层不同敏感性造成不同影响,主要表现在驱后水敏性增加但速敏性、酸敏性、碱敏性等有所降低。对储层孔渗统计分析表明,三元复合驱后岩芯孔隙度和渗透率绝对值均有所增加,且二者相关性较好;结合原子力显微镜对岩芯微观孔隙结构的观测结果进一步验证了孔渗改善的相关认识。

关键词: 三元复合驱, 润湿性, 敏感性, 孔隙度, 渗透率

Abstract: The important prerequisite ensuring the application effect of ASP flooding is determined by the extent of the impact of characteristic parameters variations of reservoir. The variations of the characteristic parameters such as wettability, sensitivity, porosity, permeability of cores, which were drilled before and after ASP flooding in Daqing Oilfield, are analyzed systematically by core-flooding experiments and AFM. The measurement results of relative permeability show that the wettability of reservoir core will change from oil wet to water wet after ASP flooding. The sensitivity experiments indicate that ASP flooding will lead to different influence on types of sensitivity, mainly including the increase of water sensitivity, but the decrease of sensitivity of velocity,acid and alkali. Statistical analysis of the reservoir porosity and permeability shows that both the absolute value of porosity and permeability of core increase and they relatewell with each other. The observations of AFM for microscopic pore structure of core further validate the understanding of the porosity and permeability improvement.

Key words: ASP flooding, wettability, sensitivity, porosity, permeability

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