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《Fault-Block Oil & Gas Field》 2009-04
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The Joshi formula considering the friction loss of well bore

Liu Zixiong1 Wang Yarong2 Huang Kai2 Zheng Qiyi3 (1.China Oilfield Services Limited, CNOOC, Tianjin 300450, China; 2.College of Petroleum Engineering, Yangtze University, Jingzhou 434023, China; 3.Production Engineering Research Institute, Daqing Oilfield Company Limited, CNPC, Daqing 163453, China)  
It is difficult to find out the optimal horizontal length by using various formulas of production calculation in design of horizontal well length. In the present study and application, the widely used Joshi formula has ignored the friction loss of well bore, which appeared that the relation between the length of horizontal section and its production ability is basically a linear curve in the formation of infinite length, that is to say, the longer horizontal length will be better, which does not match the actual situation. Through the study on the flow of most horizontal section, which considered the influence of friction within the horizontal section in laminar flow conditions, the Joshi formula is modified with considering the friction loss of well bore on this flowing condition. Accordingly it is more suitable for designing the length of horizontal well and calculating production.
【CateGory Index】: TE355
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【Citations】
Chinese Journal Full-text Database 2 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Yin Guiqin (Petroleum Engineering Institute,Yangtze University, Jingzhou 434023, China) , ZhangGongshe and Liu Zhijun et al.;Prediction of Productivity Index for Horizontal Well[J];Fault-Block Oil & Gas Field;2006-03
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