| 超低渗油藏注气采油可行性实验 |
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| 引用本文： | 孙黎娟,吴凡,刘社芹,张素芹,荣桂花,王瑞华.超低渗油藏注气采油可行性实验[J].石油地质与工程,2005,19(3):38-39. |
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| 作者姓名： | 孙黎娟 吴凡 刘社芹 张素芹 荣桂花 王瑞华 |
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| 作者单位： | 中国石油大学(华东)山东东营257061;中原油田分公司勘探开发科学研究院;中原油田分公司勘探开发科学研究院 |
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| 摘 要： | 超低渗油藏由于孔喉极细,即使高压注水,也难以保持注采平衡,应考虑注气的可行性。文中进行了水驱油和氮气驱油试验,以比较驱替效果,探究超低渗油藏的驱替机理。结果表明,对于小于1×10-3μm2的超低渗岩心,气驱比水驱效果好,气驱平均采收率为27.9%,水驱平均采收率为24.1%。说明注气具有一定的优越性。
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| 关 键 词： | 超低渗油藏 注采平衡 注气 可行性 水驱油 气驱油 采收率 |
| 文章编号： | 1006-4095(2005)03-0038-02 |
| 修稿时间： | 2005年3月25日 |
Experimental study of feasibility of gas injection recovery in ultra- low permeability reservoirs |
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| Sun Lijuan et al.Experimental study of feasibility of gas injection recovery in ultra- low permeability reservoirs[J].Petroleum Geology and Engineering,2005,19(3):38-39. |
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| Authors: | Sun Lijuan |
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| Abstract: | To maintain a balanced injection and production rate in ultra - low permeability reservoirs is very difficult even when applying a very high pressure water injection, due to the very fine pore throats, therefore the feasibility of gas injection should be considered. Water - drive and nitrogen - drive experiments are performed to compare their displacement effects and study the displacing mechanism of ultra - low permeability reservoirs. In core with an ultra - low permeability of 1×10-3μm2 , the average recovery factor of gas drive is 27. 9% , 3. 8 percentage points higher than the 24. 2% of water drive, indicating that gas drive is advantageous to some extent. |
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| Keywords: | ultra -low permeability reservoir balanced injection and production rate gas injection feasibility water drive gas drive recovery factor |
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