| 超低渗岩心气测渗透率测试误差分析 |
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| 引用本文： | 卢燕,刘学刚,林光荣,刘秋兰,杜朝锋. 超低渗岩心气测渗透率测试误差分析[J]. 西安石油大学学报(自然科学版), 2009, 24(5) |
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| 作者姓名： | 卢燕 刘学刚 林光荣 刘秋兰 杜朝锋 |
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| 作者单位： | 长庆油田分公司勘探开发研究院,陕西,西安,710018 |
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| 摘 要： | 为了确定影响超低渗岩心气测渗透率准确性的因素及主要参数,通过对气测渗透率测试计算公式分析、室内对比实验,发现影响超低渗岩心气测渗透率准确性的因素有:入口气体压力及出口气体流量、岩心样品长度及直径测量的准确性、测试围压及测试稳定时间.对影响因素进行逐项分析,分析这些参数产生的误差,得到了主要参数的最佳设置范围.
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| 关 键 词： | 超低渗岩心 气测渗透率 影响因素 |
New recognition to the measurement error of the gas permeability of ultra-low permeability cores |
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| LU Yan,LIU Xue-gang,LIN Guang-rong,LIU Qiu-lan,DU Chao-feng. New recognition to the measurement error of the gas permeability of ultra-low permeability cores[J]. Journal of Xian Shiyou University, 2009, 24(5) |
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| Authors: | LU Yan LIU Xue-gang LIN Guang-rong LIU Qiu-lan DU Chao-feng |
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| Abstract: | The factors and parameters of influencing the measurement accuracy of the gas permeability of ultra-low permeability cores are determined according to the analysis of the calculation formula for core gas permeability and laboratory contrast experiments.They include the gas pressures at inlet and outlet,the gas flow rate at outlet,of the length and diameter of the cores,the confining pressure of the cores and the stable time of measuring the confining pressure.The effects of the parameters on the measurement error of the gas permeability of ultra-low permeability cores are analyzed one by one,and the best ranges of the parameters are obtained. |
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| Keywords: | ultra-low permeability core core gas permeability influencing factor |
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