多孔介质中凝析油气相态研究进展

Advances on condensate oil-gas phase behavior research in porous medium

李明军 杜建芬 卞小强

西南石油大学，四川 成都 610500

Southwest PetroleumUniversity, Chengdu 610500, China

分析了近几十年有关多孔介质中油气相态的理论，肯定了多孔介质对油气相态的影响，阐述了油气相态研究现状的局限性，提出了相态研究的发展方向。凝析油气体系在地层多孔介质中的储集和渗流，与储层多孔介质形成一个相互作用的系统；毛管压力、毛细凝聚、吸附作用、润湿性等对油气相态特征和渗流规律有一定程度的影响；尤其在低渗透多孔介质中，影响更为严重。

This paper analyzes the oil-gas phase behavior theory in porous media in the recent several decades. The issue that porous
media has affected the phase behavior of oil and gas is affirmed, and the limitation of current research in the phase behavior of oil
and gas is explained.The future development direction of phase behavior study is put forward. The storage and seepage of
condensate oil and gas in porous medium form a interacting system with the porous medium of reservoir.The capillary pressure,
capillary condensation, absorption and wettability affect the phase behavior characteristics and seepage laws of condensate gas to a
certain extent. The effect is more serious especially in porous medium of low permeability