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石油实验地质  2017, Vol. 39 Issue (6): 805-811    DOI: 10.11781/sysydz201706805
盆地·油藏 本期目录 | 过刊浏览 |
鄂尔多斯盆地南梁西区长4+5油层组微观渗流特征及影响因素
任江丽1, 朱玉双1, 刘林玉1, 王伟1, 王振川2, 陈大友3
1. 西北大学 地质学系 大陆动力学国家重点实验室(西北大学), 西安 710069;
2. 陕西延长石油集团 油气勘探公司, 陕西 延安 716000;
3. 兰州城市学院 培黎石油工程学院, 兰州 730070
Micro-flow characteristics and controls of Chang 4+5 reservoirs in the western Nanliang oil field, Ordos Basin
Ren Jiangli1, Zhu Yushuang1, Liu Linyu1, Wang Wei1, Wang Zhenchuan2, Chen Dayou3
1. State Key Laboratory of Continental Dynamics/Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China;
2. Oil and Gas Exploitation Company, Yanchang Petroleum, Yan'an, Shaanxi 716000, China;
3. Bailie School of Petroleum Engineering, Lanzhou City University, Lanzhou, Gansu 730070, China
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摘要: 为了提高鄂尔多斯盆地南梁西区长4+5油层组的注水效率,对目的层砂岩模型进行渗流实验,观察其渗流特性,探讨储层特征、实验参数与驱油效率之间的关系,目的是找到制约驱油效率的重要因素。应用扫描电镜、铸体薄片等测试资料对储层微观结构进行细致研究,再通过砂岩微观模型渗流实验,总结储层特性、渗流实验参数与驱油效率的关系。结果表明,长4+5油层组主要驱替类型是均匀驱替,局部存在指状和网状驱替,饱和油的最终驱油效率中均匀状驱替最高。驱油效率内部影响因素中非均质性对驱油效率影响最大;储层润湿性也是主要影响因素之一;物性中的渗透率与驱油效率正相关,孔隙度对驱油效率的影响较弱。驱替压力和注入水体积倍数这2个外部影响因素,亦可提高驱油效率,相对来说驱油效率受注水压力的影响更明显。
关键词 渗流特征驱油效率非均质性润湿性物性驱替压力体积倍数南梁西区鄂尔多斯盆地    
Abstract:A model of real sandstones was applied to study the micro-flow characteristics and oil displacement efficiency of the Chang 4+5 reservoirs in the western Nanliang oil field to improve the efficiency of water flooding. The micro-structure was studied with casting thin sections, scanning electron microscopy and mercury injection in order to estimate the influences of reservoir characteristics and micro-flow experiment factors on water flooding efficiency. The results showed that the Chang 4+5 reservoirs were dominated by homogeneous seepage, while finger-type seepage and net-type seepage also existed locally. The homogeneous seepage resulted in the highest final oil saturation and final displacement efficiency. For the internal factors affecting displacement efficiency, heterogeneity played a key role, and reservoir wettability was also important. Permeability was positively related to oil displacement efficiency, while porosity had a weak influence on oil displacement efficiency. Two external factors, water injection pressure and volume multiple, could enhance displacement efficiency, and the influence of pressure was more significant.
Key wordsmicro-flow characteristics    oil displacement efficiency    heterogeneity    wettability    reservoir physical property    drive pressure    volume multiple    western Nanliang oil field    Ordos Basin
收稿日期: 2017-03-07      出版日期: 2017-11-28
ZTFLH:  TE311  
基金资助:国家科技重大专项(2008ZX05013-005)资助。
通讯作者: 朱玉双(1969-),女,教授,从事油层物理与开发地质研究。E-mail:yshzhu@nwu.edu.cn。     E-mail: yshzhu@nwu.edu.cn
作者简介: 任江丽(1985-),女,博士研究生,从事油气田地质与开发研究。E-mail:rjl19850504@163.com。
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引用本文:

王振川, 陈大友, 任江丽等 .鄂尔多斯盆地南梁西区长4+5油层组微观渗流特征及影响因素[J]. 石油实验地质, 2017, 39(6): 805-811.
Wang Zhenchuan, Chen Dayou, Ren Jiangli et al .Micro-flow characteristics and controls of Chang 4+5 reservoirs in the western Nanliang oil field, Ordos Basin. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(6): 805-811.

链接本文:

http://www.sysydz.net/CN/10.11781/sysydz201706805      或      http://www.sysydz.net/CN/Y2017/V39/I6/805

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