【摘要】 目前常用的通用压缩因子图对比压力的适用范围为小于 1 5的区域 ,且由于条件的限制 ,对比压力大于1 5的区域内相行为的实验报道较少 ,给特高压力油气藏储量的准确计算和开发方案的制定带来了一定的困难。为弥补特高压力区域压力 体积 温度压缩因子实验数据的不足 ,作者设计制造了一套特高压物性实验装置 ,其最高工作压力为 1 0 0MPa,最高工作温度为473K。用该装置测定了 3个气样 ,获得温度为 3 2 3～41 3K、压力为 2 0～ 1 0 0MPa范围内的压缩因子值 ,共取得 3 80个数据点 (其中对比压力大于 1 5的数据为 2 1 9个 )。实验结果表明 :对于所测定的体系 ,目前使用的通用压缩因子图的对比压力的适用范围可以外延使用至对比压力小于 2 2的区域 ,其误差没有明显的增加。图 2表 2参 2 (郭绪强摘 )更多还原

【Abstract】 With the development of petroleum engineering, more and more gas/re trograde reservoirs where the reduced pressure(Pr) is greater than 15 are discovered. However the Standing Katz natural gas compressibility factor chart which has been used for 40 years can be used only in the region where the Pr<15. There is no evidence to solid the Standing Katz chart in the region where the Pr>15. So a super high pressure PVT system is established, with maximum working temperature of 473K and maximum working pressure of 100MPa. For checking the reliability of the new PVT system, the compressibility factor of N 2 is measured in the range of 293 423K and 20 100MPa. The comparison with literature data indicates the average deviation is less than 1%. Using this apparatus, the compressibility factors of 3 natural gas samples are measured in the range of 323 413K and 20 100MPa. A total of 380 data points are measured, of which 219 data points are measured at Pr>15. The experimental results show that the Standing Katz chart can be extended to the region of Pr<22 without greater error occurring.更多还原