考虑非平衡现象的稠油井井筒压力温度计算模型  

Multiphase flow model of heavy oil well with consideration of non-equilibrium effect

作　　者：赵瑞东[1] 吴晓东[1] 陶珍[2] 王潇[3] 鹿丽卿[4] 

机构地区：[1]石油工程教育部重点实验室中国石油大学,北京102249 [2]中国石油大学(北京)气体能源开发与利用教育部工程研究中心,北京102249 [3]中石化江汉油田,湖北武汉430035 [4]中油大庆油田有限责任公司,黑龙江大庆163853

出　　处：《特种油气藏》2011年第4期121-123,141-142,共3页Special Oil & Gas Reservoirs

基　　金：国家"863"计划"CO2驱油注采工程技术研究"(2009AA063404);国家科技重大专项"大型油气田及煤层气开发"(2008ZX05009-05);加拿大CMG基金会项目"Industrial Research Chair in Non-Conventional Reservoirs Modeling"

摘　　要：在预测井筒压力温度分布时,通常假设油气两相瞬时平衡,对于稠油油井,该假设会产生一定误差。为此,研究了油相中气体扩散规律,证实了稠油油井中存在明显的非平衡现象,根据质量、动量、能量守恒原理,导出了考虑非平衡效应的稠油井筒压力温度计算模型。实例计算验证表明,该模型能更准确地反映稠油油井井筒的流动规律,具有一定的工程应用价值。The concept of instantaneous equilibrium between oil and gas phase is often assumed when predicting wellbore pressure and temperature distribution.While for heavy oil wells,this hypothesis can lead to some errors.It has been proved through studying gas diffusion law in oil phase that there is a distinct non-equilibrium phenomenon in heavy oil wells.A calculation model of pressure and temperature for heavy oil wells has been derived with consideration of non-equilibrium effect based on the principles of mass,momentum,and energy conservation.It has been verified through case calculation that this model can accurately reflect the flow pattern in heavy oil wellbore and has certain engineering application value.

关 键 词：稠油 井筒气液相非平衡 多相流动 压力 温度 数学模型 

分 类 号：TE319[石油与天然气工程—油气田开发工程]