摘要
考虑了地层受岩石上覆压力产生变形、吸附和毛细凝聚等流固耦合界面效应综合影响,对变形孔隙介质中的凝析油气相态理论进行了分析,建立了变形介质中凝析油气体系流固耦合相平衡计算模型。通过对YH凝析气藏地层流体在孔隙介质中的露点、反凝析油饱和度等相态特征的研究,以及与常规PVT实验结果进行比较,得到的结果是上露点压力增加,下露点压力降低,反凝析饱和度增加;并进一步分析了凝析油气体系流固耦合相态特征对凝析气井产能的影响,证实了考虑孔隙介质影响的相态及渗流规律的研究是有必要的。
The comprehensive influences of fluid-solid coupling interfacial phenomena factors,such as deformation induced by rock pressure,surface adsorption and capillary condensation,on phase behavior change of oil and gas system are considered,condensate oil and gas phase behavior in deformable media is analyzed;fluid-solid coupling phase equilibrium equation of condensate oil and gas phase in deformable media is constructed.Taking YaHa gas condensate reservoir formation fluid as an example,with model constructed in this paper,dew-point and retrograde condensate oil saturation in porous media are researched,the calculation results are compared with conventional PVT test data,which indicates that the upper dew-point increases,down dew-point decreases and retrograde condensate oil saturation increases.The influence of fluid-solid coupling phase characteristic of condensate oil and gas system on the production of condensate wells is analyzed,which testifies that it is necessary to research the phase behavior and the law of flowing through porous media considering pore media.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第S1期29-33,6,共6页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
凝析气藏
变形介质
毛细凝聚
相态
渗流
gas condensate reservoir
deformable medium
capillary condensation
phase state
flow through porous media
