西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (3): 127-131.DOI: 10.3863/j.issn.1674-5086.2010.03.024

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

RESEARCH ON CORRECTION METHODS FOR HORIZONTAL WELL PRODUCTIVITY FORMULA IN ANISOTROPIC RESERVOIRS

WANG Da-wei LI Xiao-ping   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Southwest Petroleum University，Chengdu Sichuan 610500，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-06-20 Published:2010-06-20

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Abstract: For the sake of calculating horizontal well productivity in anisotropic reservoirs accurately，five kinds of anisotropic correction methods for horizontal well productivity formula are analyzed and some problems of existing correction methods discussed.By expressing permeability as the forms of arithmetic mean，geometric mean and harmonic mean，the productivity of horizontal wells decreases in turn，i.e.，geometric mean and harmonic mean correction can show the influence of permeability heterogeneity on the productivity of horizontal wells better than arithmetic mean correction.Based on the correction method of Chen′s formula，a new Joshi′s anisotropic correction formula is derived，and the result is in accordance with the one from Chen′s.Case study indicates that the anisotropy has a great influence on productivity of horizontal wells.

Key words: horizontal well, permeability, anisotropy, productivity, formula, correction

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