| 低渗透岩心渗吸实验研究 |
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| 引用本文： | 周凤军,陈文明.低渗透岩心渗吸实验研究[J].复杂油气藏,2009(1):54-56. |
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| 作者姓名： | 周凤军 陈文明 |
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| 作者单位： | 中国石油大学(北京)石油工程教育部重点实验室;中国石油化工股份有限公司江苏油田分公司试采一厂; |
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| 摘 要： | 一般低渗透储层只有存在大量的天然裂缝才能经济有效的进行开发。由于毛管力的作用，油从岩心基质自发渗吸到裂缝中是一种十分重要的采出机制。因此，在评价低渗透油藏石油采收率时具有重要作用。实验采用长庆油田低渗透储层天然岩心，进行自发渗吸实验。实验结果表明，渗透率（0．1～1．0）×10^-3μm。级别的岩心，渗吸采收率在11％～12％之间；渗透率（2～4）×10^-3μm^2级别的岩心，渗吸采收率在14％～18％之间。同一块岩心不同渗吸液对比实验表明，活性水因降低了界面张力而显著提高的石油采收率，增幅可达10％。
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| 关 键 词： | 低渗透 岩心 自发渗吸 采收率 |
Study on spontaneous imbibition experiment of low permeability core |
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| Authors: | Zhou Fengjun Chen Wenming MOE Key Laboratory of Petroleum Engineering Beijing No Oil Production Plant of Jiangsu Oilfield Company SINOPEC Jiangdu Jiangsu |
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| Affiliation: | Zhou Fengjun1 Chen Wenming2(1.China University of Petroleum(Beijing),MOE Key Laboratory of Petroleum Engineering,Beijing 102249,2.No.1 Oil Production Plant of Jiangsu Oilfield Company,SINOPEC,Jiangdu,Jiangsu 225000) |
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| Abstract: | Usually the low permeability reservoir could be developed sufficiently when existing abundant nature fracture.As the capillary force action,it is an important mechanism that the oil flow into the fracture from matrix.So this phenomenon should be considered in estimating the oil recovery.This paper bases on the laboratory experiment,using the nature low permeability core of Changqing Oilfield.The result shows the oil recovery increases with the permeability obviously.The spontaneous imbibition recovery effic... |
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| Keywords: | low permeability core spontaneous imbibition recovery efficiency |
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