西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (5): 16-16–18.DOI: 10.3863/j.issn.1000-2634.2001.05.05

• 石油工程 • 上一篇    下一篇

双重介质油藏水平井试井分析方法

李晓平1 沈燕来2 刘启国1 赵必荣1

  

  1. (1.西南石油学院石油工程学院,四川 南充 637001; 2.中海石油天津分公司生产部)
  • 收稿日期:2001-02-19 修回日期:1900-01-01 出版日期:2001-10-20 发布日期:2001-10-20

ANALYSIS METHOD OF TRANSIENT TEST FOR HORIZONTAL WELL IN DUAL POROSITY RESERVOIR

LI Xiao-ping1 SHEN Yan-lai1 LIU Qi-guo1 ZHAO Bi-rong1   

  1. ( Southwest Petroleum Inst, Nanchong Sichuan 637001,China)
  • Received:2001-02-19 Revised:1900-01-01 Online:2001-10-20 Published:2001-10-20

摘要:

水平井开发双重介质油藏比直井能取得更好的开发效果,已为油田开发的实践所证实。水平井试井分析是油藏类型识别及求取地层参数的重要手段。考虑井筒储集和表皮效应的情况下,建立了双重介质无限和盒型封闭油藏中水平井三维渗流的数学模型,利用拉普拉斯变换获得了数学模型的解,并对一口实例水平井的试井资料进行了分析,获得了裂缝渗透率、表皮系数、井筒储集系数、弹性储容比和窜流系数,结果表明,所提出的理论和方法是可行和实用的。

关键词: 多重介质, 油藏, 水平井, 数学模型, 试井解释

Abstract:

It is well known that the oil rate of horizontal well is much higher than that of vertical well in dual porosity reservoir.Transient test is an important means of obtaining reservoir parameters and identifying reservoir type. This paper presents a mathematical model of 3D horizontal well with wellbore storage and skin effect in dual porosity infinite and box-shape reservoir. The mathematical model is solved by means of Laplace transform. Based on the model presented above, the transient test data from an example horizontal well has been studied to produce fracture permeability, skin factor, wellbore storage coefficient, storativity -ratio and inter-porosity flow coefficient. The results show that the theory and method presented in this paper are reliable and applicable.

Key words: multiple media, oil reservoir, horizontal well, mathematical model, transient test interpretation

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