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《Petroleum Exploration and Development》 2002-03
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A study on deep condensate gas well inflow performance equation

YU Xi-chong 1, ZHAO Jin-zhou 1, WU Ya-ling 2, ZENG Yuan-qi 3 (1.Southwest Petroleum Institute, Sichuan 637001, P. R. China; 2.Nanchong Refinary Factory, Sichuan 637000, P. R. China; 3.Chongqing Natural Gas Division, Southwest Oil and Gas Field,PetroCh  
In this paper, a new method is brought forward which is suitable for condensate gas flow state. The new method bases on the flow character of natural gas and the petro-condensate liquid in the formation, combining with phase state theory of condensate gas. At the same time, the change of the liquid phase and the components and the various skin factors under different condition are also considered. The two-phase pseudo-pressure function of the theory of stable state is used. A new equation is adopted to calculate the well bottom flow pressure. For these method and concept, the mathematics model for three different situation:First, well bottom flow pressure is higher than dew point pressure. Second, well bottom flow pressure is lower than dew point pressure but condensate oil saturation lower than flow saturation. Last, well bottom flow pressure is lower than dew point but condensate oil saturation higher than flow saturation. Developing the relevant software to compare with the result of well test, the new method is suit for the forecast of the influx state in condensate well.
【Fund】: 国家 8 63项目石油勘探开发分布式集成应用系统 (863 30 6 ZT0 4 0 3 3)
【CateGory Index】: TE372
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