特高压天然气压缩因子的实验测定

Measurement of the Compressibility Factor of Natural Gases at Super High Pressure

针对海上和新疆油气藏压力高的特点，设计制造了一套特高压PVT实验装置，其最高工作压力为130MPa，最高工作温度为200℃。测定了3个气样，50～140℃，20～100MPa范围内的PVTZ值，共取得346个数据点，其中对比压力只大于15的数据为178个。

An apparatus for super high pressure PVT measurement with maximum working temperature200℃ and maximum working pressure 130MPa has been established. The measurement with pure N2in the range of 20～150℃ and 20～100MPa gives an error less than 1% compared with the literaturedata. With this apparatus, the compressibility factors of 3 natural gas samples were measured in therange of 50～140℃ and 20～100MPa. The experiment data points amount to 346, and the reducedpressures of 178 points are above 15.