| 特低渗透砂岩储层水驱油CT成像技术研究 |
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| 引用本文： | 王瑞飞,陈军斌,孙卫.特低渗透砂岩储层水驱油CT成像技术研究[J].地球物理学进展,2008,23(3):864-870. |
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| 作者姓名： | 王瑞飞 陈军斌 孙卫 |
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| 作者单位： | 1. 西安石油大学石油工程学院,西安,710065
2. 西北大学大陆动力学国家重点实验室,西安,710069 |
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| 摘 要： | 通过水驱油岩心的CT成像技术,动态、定量、可视化地研究了特低渗透砂岩储层水驱油岩心的微观孔隙结构、含水饱和度分布、吸水能力及微观孔隙结构对驱油效率的影响.研究表明,实验岩心的CT值分布在1819~1961之间,与标准的Berea砂岩相比高出15%左右,属于典型的特低渗透砂岩储层.储层微观孔隙结构是影响油水分布的主要因素.特低渗透砂岩储层开发要高度重视无水采收率.储层致密和微裂缝发育的不均一性是特低渗透砂岩油田驱油效率低的根本原因.
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| 关 键 词： | 特低渗透砂岩储层 CT成像 微观孔隙结构 驱油效率 吸水能力 |
| 收稿时间： | 2007-9-21 |
| 修稿时间： | 2007-12-30 |
Application of CT image technique to the research of oil displacement with water drive in Ultra-low permeability sandstone reservoir |
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| WANG Rui-fei,CHEN Jun-bin,SUN Wei.Application of CT image technique to the research of oil displacement with water drive in Ultra-low permeability sandstone reservoir[J].Progress in Geophysics,2008,23(3):864-870. |
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| Authors: | WANG Rui-fei CHEN Jun-bin SUN Wei |
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| Abstract: | By the technique of CT scanned image,the micro-structure,the distribution of water saturation,water absorbing capacity and the effect on oil-displacement efficiency by the micro-pore structure were studied dynamically,quantitatively,visually.The research shows that the distribution of CT value is from 1819 to 1961,which is 15% above that of the Berea sandstone.It belongs to the representative ultra-low permeability sandstone reservoir.The micro-pore structure is the essential factor for the distribution of oil and water.The water free recovery factor should be emphasized in the development of the ultra-low permeability sandstone reservoir.The compact texture and the discrepancy of the micro-fracture are the primary reasons for the low efficieney of oil displacement. |
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| Keywords: | ultra-low permeability sandstone reservoir CT scanned image micro-pore structure oil-displacement efficiency water absorbing capacity |
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