| 超低渗透油藏渗流特征及提高采收率方向 |
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| 引用本文： | 李忠兴,赵继勇,李宪文,何永宏.超低渗透油藏渗流特征及提高采收率方向[J].辽宁工程技术大学学报(自然科学版),2009(Z1). |
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| 作者姓名： | 李忠兴 赵继勇 李宪文 何永宏 |
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| 作者单位： | 中国石油长庆油田分公司;中国石油长庆油田分公司超低渗透油藏研究中心;中国石油长庆油田分公司油气工艺技术研究院; |
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| 摘 要： | 为提高超低渗透油藏单井产量,深入研究了超低渗透油藏渗流特征,认为建立注水渗流条件下的有效驱替是关键,综合多种测试手段和岩心室内实验结果,定量描述了启动压力梯度和压力敏感系数的非线性变化规律,建立了超低渗透油藏考虑应力敏感和启动压力梯度的渗流模型,研究并试验了以小井距、小水量、超前注水、前置酸加砂压裂、多级加砂压裂、水力射孔射流压裂为主体的开发技术,有效地改善了平面和剖面渗流条件,为规模开发超低渗透油藏提供了新途径。
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| 关 键 词： | 超低渗 启动压力梯度 应力敏感 开发技术 有效驱替 水力压裂 |
Seepage flow characteristics and stimulation techniques in ultra-low permeability oil reservoirs |
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| LI Zhongxing,ZHAO Jiyong,LI Xianwen,HE Yonghong.Seepage flow characteristics and stimulation techniques in ultra-low permeability oil reservoirs[J].Journal of Liaoning Technical University (Natural Science Edition),2009(Z1). |
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| Authors: | LI Zhongxing ZHAO Jiyong LI Xianwen HE Yonghong |
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| Abstract: | In order to improve well production of ultra-low permeability reservoirs,seepage flow characteristics have been studied,which concluded that it was critical to establish the effective Start-up Pressure Gradient during water-flooding.Based on core lab results and data analysis,the quantitative nonlinear changing rules considering start-up pressure gradient and pressure sensitivity factors were obtained.The seepage models involving stress sensitivity and start-up pressure gradient for extra-low permeability o... |
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| Keywords: | ultra-low permeability start-up pressure gradient stress sensitivity character development technique effective displacement hydraulic fracturing |
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