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《Natural Gas Industry》 2001-02
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Huang Quanhua,Li Shilun,Sun Lei and Xiong Yu(Southwest Petroleum Institute)and Gao Guihong and Jiang Tongwen(Talimu Oil Field Branch,PCL).  
The porous media underground have a stronger adsorption capacity for condensate gas fluid because of their larger specific surface and the effect of the porous media adsorption on condensate gas flow is a problem which has been followed with interest at home and abroad. In the paper, according to material balance principle, a new condensate gas flow differential equation is rederived and set up by use of the infinitesimal volumn method;the influence of the porous media adsorption is directly introduced into the flow differential equation firstly and relevant two phase pseudopressure function is defined; a flow equation similar to single phase liquid flow differential equation in form is obtained;then the relation between formation retrograde condensate saturation and formation pressure in flow process is derived;and then the relation between pressure and retrograde condensate saturation,adsorption fluid saturation and two phase pseudopressure in formation as well as the dynamic distribution of the formation retrograde condensate saturations are calculated and analyzed by example. The results show that the condensate gas flow law considering the influence of the porous media adsorption is obviously different from the one unconsidering its influence; and the effect of the porous media on the condensate gas flow is greater, which can't be neglected in application to engineering.
【Fund】: 中国石油天然气集团公司“九五”重点科技攻关项目 !(970 5 0 6 - 0 3);; “西南石油学院科技攻关”项目! (Y99- 16 0 )
【CateGory Index】: TE312
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