作　　者： ; ; ; ;

机构地区： 中国石油大学北京石油工程学院石油工程教育部重点实验室

出　　处： 《石油钻采工艺》 2010年第1期53-56,共4页

摘　　要： 常规天然气CO2含量低,应用理论图版、经验公式计算偏差因子在一定范围内能够满足精度要求。但是,目前相继发现富含CO2天然气藏,由于CO2与烃类气体性质的差异,气体中CO2含量的增加将会影响计算精度。为此从计算偏差因子经验公式入手,对比了甲烷、乙烷、CO2纯气体的偏差因子。通过室内实验测定了不同CO2含量天然气偏差因子,分析了富含CO2天然气偏差因子随温度、压力的变化规律以及CO2含量对偏差因子的影响。 Conventional gas normally contains less CO2, and the deviation factor which is calculated with theoretical chart and empirical formula can meet the accuracy requirement in a certain range. However, nowadays CO2 rich natural gas reservoirs have been found. As the character of CO2 is different from the hydrocarbon, the precision of empirical formula calculation of the deviation factor will be influenced by the increase of CO2. This thesis compares the deviation factor of methane, ethane and CO2, which are calculated with empirical formula. And then through laboratory experiment, this thesis analyzes the deviation factor of the CO2 rich natural gas changed with the respect to pressure and temperature, and studies the impact of the CO2 to the deviation factor.

关 键 词： 偏差因子 理论计算 室内实验

领　　域： [石油与天然气工程]