西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (1): 53-57.DOI: 10.3863/j.issn.1674-5086.2009.01.013

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

NONSTEADY STATE MODEL OF GAS RESERVIOR AND HORIZONTAL WELL WELLBORE COUPLING

LI Song-quan1,2 LIAN Pei-qing1,3 LI Xiu-sheng1,3   

  1. 1.College of Petroleum Engineering,China University of Petroleum,Changping Beijing 102249,China;2.PetroChina Exploration & Production Company,Beijing 100011,China；3.MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Changping Beijing 102249,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

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Abstract:

Green function and Neumann superposition principle is applied to develop,infinite and finite models of horizontal wellbore and gas reservoir coupling model,and a solution method of this coupling model is given.Comparing infinite model with eclipse software,reasonable results are obtained.The computation of a practical example shows that the pressure drop in wellbore has an important influence in early time of non-steady flow period,the pressuer loss will make the productivity decrease and the pressure distribution non-uniform.Wellbore inflow is more uniform in pseudo steady state than non-steady state.There is a optimal range of the horizontal saction length,aniso-tropic reservoir also has an impact on distribution of wellbore flow.

Key words: horizontal well, wellbore, gas reservoirs, coupling, non-steady

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