石油学报 ›› 2008, Vol. 29 ›› Issue (2): 256-261.DOI: 10.7623/syxb200802018

• 油田开发 • 上一篇    下一篇

低渗透油藏非达西渗流面积井网产油量计算方法

计秉玉1, 李莉2,3, 王春艳3   

  1. 1. 大庆油田有限责任公司, 黑龙江大庆, 163453;
    2. 中国石油大学, 北京, 102249;
    3. 大庆油田勘探开发研究院, 黑龙江大庆, 163712
  • 收稿日期:2007-07-27 修回日期:2007-10-30 出版日期:2008-03-25 发布日期:2010-05-21
  • 作者简介:计秉玉,男,1963年6月生.1999年获中国科学院数学与系统科学研究院博士学位,现为大庆油田有限责任公司副总地质师、教授级高级工程师,主要从事科研与管理工作.E-mail:jiby@petrochina.com.cn致谢感谢韩大匡院士在研究过程中的指导和中国石油大学董平川老师提供的参考资料.
  • 基金资助:
    国家自然科学基金项目(No.50574059和No.0004002);中国石油天然气股份公司科技攻关项目(030127)联合资助

Oil production calculation for areal well pattern of low-permeability reservoir with non-Darcy seepage flow

JI Bingyu1, LI Li2,3, WANG Chunyan3   

  1. 1. Daqing Oilfield Limited Company, Daqing 163453, China;
    2. China University of Petroleum, Beijing 102249, China;
    3. Exploration and Development Research Institute, Daqing Oilfield Limited Company, Daqing 163712, China
  • Received:2007-07-27 Revised:2007-10-30 Online:2008-03-25 Published:2010-05-21

摘要: 根据低渗透油藏注水开发的特点,应用室内实验得到的低速非达西渗流基本公式以及流线积分方法和单元分析方法,推导出了四点法、五点法和反九点法面积井网的产量计算公式,称为ND-Ⅰ法。利用大庆低渗透油田生产数据,建立了启动压力梯度和渗透率的关系式,证实了非达西渗流存在的普遍性。提出了启动角和启动系数的概念,用于定量表征不同井网条件下储层的动用程度,为低渗透储层的油藏评价和开发设计提供了理论依据。

关键词: 低渗透油藏, 低速非达西渗流, 启动压力梯度, 启动系数, 面积井网, 产量计算公式

Abstract: Based on the exploitation characteristics of low-permeability reservoirs and the basic formula of non-Darcy flow with low velocity obtained from laboratory experiment, the yield formula for calculating the 4-spot, 5-spot and invert 9-spot areal well patterns were deduced by using the flow line integral method and element analysis method named as ND-1 method. Based on the production data of low-permeability reservoirs in Daqing Oilfield, the relationship between startup pressure gradient and permeability was established. The existence universality of the non-Darcy seepage flow was verified. The concept of startup coefficient was put forward to characterize the employing degree of reserve in different well pattern and to provide theoretical foundation for reservoir evaluation and development design of low-permeability reservoirs.

Key words: low-permeability reservoir, non-Darcy seepage flow with low velocity, startup pressure gradient, startup coefficient, areal well pattern, yield formula

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