西南石油大学学报(自然科学版) ›› 2007, Vol. 29 ›› Issue (3): 66-70.DOI: 10.3863/j.issn.1000-2634.2007.03.018

• 石油与天然气工程 • 上一篇    下一篇

产量递减自动拟合方法的适用条件研究

梁斌 张烈辉 李闽 刘安琪   

  1. (“油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川 成都 610500)
  • 收稿日期:2006-02-21 修回日期:1900-01-01 出版日期:2007-06-20 发布日期:2007-06-20
  • 通讯作者: 梁斌

THE APPLICABILITY OF RATE DECLINE AUTOMATIC MATCHING METHOD

LIANG Bin ZHANG Lie-hui LI Min et al.   

  1. (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation·Southwest Petroleum University, Chengdu Sichuan 610500,China)
  • Received:2006-02-21 Revised:1900-01-01 Online:2007-06-20 Published:2007-06-20
  • Contact: LIANG Bin

摘要: 在产量递减自动拟合模型(简称LM模型)的基础上,结合数值模拟研究了LM模型在正常压力气藏气井产量递减分析中的适用条件。研究表明,LM模型可用于任何边界形状气藏气井的产量递减分析,但对于低渗气藏的计算结果偏差很大。为了改善LM模型的预测精度,提出了去掉不稳定生产数据后,再用LM模型反求地层参数。为了便于实际应用中得到正确的计算结果,提出了检验计算结果正确与否的检验标准。

关键词: 产量递减, 自动拟合, 数值模拟, 拟稳态

Abstract: Based on rate decline automatic matching model(LM model in short) and combined with the singlewell numerical simulator, the applicability of LM's automatic matching model on analyzing the gaswell decline of the normal pressure gas reservoir is investigated. The research shows that the LM model can be applied to analyze the gaswell rate decline for any boundaryshape gas reservoir, however, as for the lowpermeability gas reservoir, the calculation results take on great errors. To improve LM model predication accuracy, a way of acquiring the formation parameters is presented in the paper by firstly removing the unsteady production data and then, following the LM automatic matching model to get formation parameters. Besides,the authors put forward a touchstone to justify the calculation results.

Key words: rate decline, automatic matching, numerical simulation, pseudo steady

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