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 • 上一篇    下一篇

水平井井筒和气藏耦合的非稳态模型

李松泉1，2 廉培庆1，3 李秀生1，3   

  1. 1.中国石油大学石油天然气工程学院，北京昌平102249；2.中国石油股份公司勘探与生产分公司，北京100011；3.中国石油大学石油工程教育部重点实验室，北京昌平102249
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-20 发布日期:2009-02-20

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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摘要：

应用Green函数和Neumann积原理，建立了盒式气藏水平井非稳态产能计算的无限导流模型和有限导流模型，并提出了求解此模型的方法。模型考虑了井筒压降、加速度和径向流入的影响，并可以应用于各向异性气藏。通过与Eclipse结果比较，验证了本模型的合理性。实例计算表明：早期非稳态流动阶段井筒压降对计算结果影响较大；井筒内的压力损失将会使水平井的产量降低和井筒内的压力分布不均匀；受井筒压降的影响，非稳态时的井筒流量分布比拟稳态时更不均衡。

关键词: 水平井, 井筒, 气藏, 耦合, 非稳态

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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