摘要
高温高压富含水气凝析气藏在生产过程中,气态水及非平衡效应均会对凝析油气体系相态及近井地带凝析液聚集产生较大的影响。采用改进后的适合于含水凝析油气体系相态理论的PR方程及非平衡效应理论,结合室内高温高压富含水气凝析油气体系平衡压降与非平衡压降实验,分析在室内定容衰竭实验过程中非平衡效应对凝析油、凝析水开采特征的影响,评价了改进的PR方程对富含水气凝析气藏相态描述的适应性。结果表明,适当的非平衡效应在一定程度上可以提高凝析油、凝析水采出程度,改进PR方程更适合表征含水气凝析油气体系相态变化特征。
When the reservoir with water vapor under HT and HP is producing,the vaporous water and non-equilibrium effect will have great influences on the phase of condensate oil and gas system and accumulation of condensate liquid at near-wellbore area.Combined the indoor pressure drop experiment of balance and non-equilibrium of condensate oil and gas system with water vapor in HT and HP,the recovery characteristics` effects of condensate oil and water which are caused by non-equilibrium effect under indoor experiment with constant volume depletion process are analyzed by the means of using the improved PR equation and non-equilibrium effect theory suiting for condensate oil and gas system phase theory with water.Then the adaptability of improved PR equation to phase description of condensate gas reservoir with water vapor is evaluated.The results show that appropriate non-equilibrium effect to a certain extent,can improve the condensate,condensate water recovery degree.The improve PR equation is more suitable for characterization of water-bearing gas characteristics of phase change of condensate oil and gas system.
出处
《重庆科技学院学报（自然科学版）》
CAS
2013年第3期88-91,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家自然科学基金青年基金项目(51104124)
关键词
凝析气藏
气态水
流体相态
非平衡效应
condensate gas reservoir
vaporous water
fluid phase
non-equilibrium effect
