西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (1): 121-126.

• 石油与天然气工程 • Previous Articles     Next Articles

Research of Reasonable Producing Pressure Drop of Gas CondensateReservoir on Different Period

Li Qian1, Li Xiangfang1, Li Yanjing2, Peng Yi3, Cui Ligong4   

  1. 1. MOE Key Laboratory for Petroleum Engineering，China University of Petroleum，Changping，Beijing 102249，China；2. Reservoir Evaluation andDevelopment Institute of Geography Research Institute of BGP，Zhuozhou，Hebei 072751，China；3. Technical Service Center of Fracturing andAcidizing，Langfang Branch of RIPED，PetroChina，Langfang，Hebei 065007；4. Geological Exploration & Development Research InstituteChuanqing Drilling Engineering Company Ltd.，CNPC，Chengdu，Sichuan 610051，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-02-01 Published:2012-02-01

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Abstract: During the development of gas condensate reservoir，the condensate would drop out with the fall of formation
pressure. It would affect the deliverability of gas wells. However，during the depletion of gas condensate reservoir，the dropout
of condensate is inevitable. We can only produce much more condensate by adjusting to reasonable working system. So，this
paper researches the character of filtrate and the effect of capillary number on the production of condensate. We propose that
there are two different periods of depletion of gas condensate reservoir and the determination of reasonable producing pressure
drop is different in the two periods. The research results show that increasing or varying producing pressure drop can increase
the deliverability of gas wells and the recovery of condensate for constant volume gas condensate reservoir. Finally，the above
viewpoint is confirmed by the production performance of an actual gas condensate well. This research is of for the efficient
development of gas condensate reservoir.

Key words: gas condensate reservoir, depletion, producing pressure drop, capillary number, condensate

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