| 稠油拟启动压力梯度测定实验方法及应用 |
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| 引用本文： | 宁丽华.稠油拟启动压力梯度测定实验方法及应用[J].石油化工高等学校学报,2011,24(1):59-63,85. |
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| 作者姓名： | 宁丽华 |
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| 作者单位： | 辽河油田金马油田开发公司,辽宁盘锦,124010 |
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| 摘 要： | 根据多孔介质中单一流体的渗流规律及物质平衡原理,在考虑稠油微可压缩特性与非线性渗流特征基础上,建立一维稠油非线性渗流理论模型,以此为理论基础设计了两种非稳态渗流测压方式测定稠油拟启动压力梯度的实验方法。通过拟合恒流量注入过程与停止注入过程的多孔介质注入端测定的压力变化,从而计算出不同温度时稠油的拟启动压力梯度值。对比理论计算与稳定实验测定拟启动压力梯度的误差可知,关闭注入端测定注入端压力变化而求得的稠油拟启动压力梯度更精确,其原因是由于停止注入实验方法只需进行压力测量而无需考虑流量测量的问题,因此该方法实验简单易操作、实验时间短、计算精度高。
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| 关 键 词： | 稠油 拟启动压力梯度 实验方法 实验研究 |
Experimental Method and Its Applications of Threshold Pressure Gradient of Heavy Oil in Porous Media |
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| NING Li-hua.Experimental Method and Its Applications of Threshold Pressure Gradient of Heavy Oil in Porous Media[J].Journal of Petrochemical Universities,2011,24(1):59-63,85. |
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| Authors: | NING Li-hua |
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| Affiliation: | NING Li-hua(Jinma Oilfield Development Company of Liaohe Oilfield Company,Panjin Liaoning 124010,P.R.China) |
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| Abstract: | According to seepage law and material balance principle of single phase fluid in porous media,a one-dimensional theoretical model of heavy oil seepage is established based on micro-compressible property and non-linear flow of heavy oil in porous media.Two experimental methods of unsteady state seepage are designed to measure the threshold pressure gradient of heavy oil in porous media.Experimental pressure with time at the inlet of porous media was matched by adjusting the threshold pressure gradient during... |
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| Keywords: | Heavy oil Threshold pressure gradient Experimental method Experimental study |
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