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《Journal of Experiments in Fluid Mechanics》 2011-05
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Experimental study for pressure drop of variable mass flow in horizontal well

WANG Zhi-ming,XIAO Jing-nan,WANG Xiao-qiu,WEI Jian-guang(MOE Key Laboratory of Petroleum Engineering,China University of Petroleum(Beijing),Changping Beijing 102249,China)  
The flow in the horizontal well is the variable mass flow due to the inflow through the perforated holes.Pressure drop due to inflow was measured in a horizontal perforated pipe loop by using water as working fluids.The experiment result shows that pressure drop grows as a result of increasing injection ratio.The mixture of inflow and main flow can cause the additional pressure drop.Moreover,the additional pressure drop has linear relationship with the ratio of acceleration pressure drop and injection ratio.A new model of pressure gradients for the vary mass flow in perforated pipes was developed.The total pressure drop consists of two parts including perforated pipe wall friction loss and additional loss.The predictive values by new model is in good agreement with true values,the average relative error is 7.5%.The accuracy of the model proposed in this paper is better than other models.So the new model can be used in coupled well and reservoir simulation model.
【Fund】: 国家重大专项课题“复杂结构井优化设计与控制关键技术”(2011ZX05009)
【CateGory Index】: TE355.6
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