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.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2010年第1期53-56,共4页
Oil Drilling & Production Technology
基金
国家重点基础研究发展计划(973计划)资助
编号:2006CB705800
关键词
CO2
偏差因子
理论计算
室内实验
CO2
deviation factor
theoretical calculation
laboratory experiment
