富含CO_2天然气井井筒压力的温度计算

The Calculation about Wellbore Fluid Pressure and Temperature in the Gas Well Richly Containing CO_2

针对富含CO2气井,区别于烃类气井,把偏差因子研究作为CO2气井的重要参数。通过实验研究表明,不同CO2含量、不同压力和温度,对偏差因子都有一定影响。应用烃类气井相关压力、温度分布模型加以偏差因子等参数的修正进行计算,由于计算压力、温度以及偏差因子的相关参数是耦合关系,采用了迭代算法,研究了不同含量CO2下压力、偏差因子等参数沿井筒变化规律。

To the gas well richly containing CO2,the deviation factor is the important parameter distinguished from hydrocarbon gas well.Experiment research shows that all of them can influence the deviation factor,such as different CO2 content,pressure and temperature so on.By using association and distinction between the CO2 gas well and hydrocarbon gas well,at the same as calculating by using the model of wellbore fluid pressure,temperature distribution to correct parameters,such as the deviation factor in hydrocarbon gas well,because of correlating parameters being coupling connections,which are used to calculate pressure,temperature and deviation factor,by the computer,law is researched,which parameters change along wellbore with deferent CO2 content,such deviation factor and so on.