【摘要】 多孔介质对凝析油气体系露点的影响主要表现为对油气的差异吸附作用和烃类气体的毛细凝聚作用。文中建立了在真实储层介质中考虑气相吸附、毛细凝聚影响的露点压力计算模型 ,论证了气相吸附、毛细凝聚对露点压力的影响程度和影响特征 ,计算了气相吸附和毛细凝聚对中渗、低渗和致密储层中凝析气露点压力影响的大小。研究结果表明 ,差异吸附对露点的影响显著 ,毛细凝聚对露点的影响不显著。更多还原

【Abstract】 The effects of porous medium on dew points of a condensate system are mainly represented by differential adsorption of hydrocarbon and capillary agglomeration of gas. This paper has developed a calculation model that takes account of adsorption and capillary agglomeration, and demonstrated the specific effects of adsorption and capillary agglomeration on dew point pressure. In addition, these effects are calculated for condensate reservoir with middle and low permeability and for tight reservoir. The results show that the differential adsorption may greatly influence dew points, with the capillary agglomeration on the contrary.更多还原