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《Petroleum Drilling Techniques》 2009-02
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Study of Coupling Horizontal Well's Variable-Mass-Rate Flow with Flow in Reservoir

Zhou Shengtian Guo Xixiu(College of Mathematics and Computational Science,China University of Petroleum(East China),Dongying,Shandong,257061,China)  
Considering the lack of researches on wellbore flow in production stage,the flow in the segment of open-hole completion horizontal well is analyzed.Based on the continuity equation,momentum equation and energy equation,an equation to calculate the mixture pressure drop and the pressure drop along the horizontal wellbore were obtained.This model considers friction,acceleration,and the mixing impact due to fluid inflow into the well.Based on the relation between fluid flow in wellbore and reservoir,a steady state wellbore/reservoir coupling model is developed.An example is presented to calculate and analyze the variable-mass-rate flow in wellbore.Compared with the infinite-conductivity well model,the impact of wellbore pressure drop on well productivity is illustrated.This model can provide reference for describing the inflow performance of horizontal well and evaluating production capacity of horizontal well.
【CateGory Index】: TE312
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