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《Fault-Block Oil & Gas Field》 2009-03
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Analysis of influence factors on productivity of horizontal well

Wang Zihao Li Zhiping Zhao Zhihua (Laboratory of Sedimentary Basin and Energy Sources, China University of Geosciences, Beijing 100083, China)  
Nowadays,there is still a big difference in the question that how to exactly calculate the productivity of horizontal well at home and abroad. In this paper, five methods for calculating the productivity of horizontal well are reviewed and the modified equations are given for the horizontal wells with anisotropy of reservoir permeability and formation damage. The influence factors on the productivity of horizontal wells, such as oil drainage area , horizontal well interval length, reservoir thickness, the anisotropy ratio of reservoir permeability, formation damage and some oil production techniques are synthetically evaluated and analyzed by means of some calculation examples and analysis of the methods for calculating the productivity of horizontal well. Some suggestions are given according to the result of analysis.
【CateGory Index】: TE328
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