娄兆彬,曾贤辉,杨朝光
LOU Zhao bin; ZENG Xian hui ; YANG Chao guang (Exploration and Development Research Institute of Zhongyuan Oil Field BranchCompany;

• 1:中原油田勘探开发科学研究院
• 2:中原油田勘探开发科学研究院
• 3:中原油田勘探开发科学研究院 河南濮阳457001
• 4:河南濮阳457001

摘要(Abstract)：

低渗透油藏的注水往往存在很大困难 ,为提高此类油藏的动用程度 ,选择卫 4 2 14井组实施了氮气驱先导试验。在评价低渗透油藏吸气能力的过程中 ,有必要建立描述地层吸气能力的数学模型———吸气方程。根据渗流力学理论 ,注入与产出的区别仅在于流体渗流方向的不同 ,因此针对不同的注气时期 ,分别讨论了“达西公式”和“气井产能方程”两种形式的数学模型 ,并对后者采用压降资料进行求解的方法做了详细介绍 ,为今后此类注气的研究奠定了基础
Water injection is always difficult in low permeability reservoirs, to improve the working degree of this reservoir, Wei42 14 well group was selected to conduct the nitrogen gas flooding pilot test. A mathematical model (gas infected equation) was built to describe the gas injectivity of the layer. According to the different gas injection period the two mathematical models of Darcy Equation and Gas Well Production Equation were discussed respectively, a method of solving the later model with the pressure decreasing data was introduced in detailed, providing foundation for this kind gas injection study later.

关键词(KeyWords)： 低渗透油藏;注氮气;吸气能力评价;数学模型建立;模型求解;实例
low permeability reservoir;nitrogen gas injection;evaluation of gas injectivity;mathematical model;solution of the mathematical model;case history

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 娄兆彬,曾贤辉,杨朝光
LOU Zhao bin; ZENG Xian hui ; YANG Chao guang (Exploration and Development Research Institute of Zhongyuan Oil Field BranchCompany;

参考文献(References)：

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• [2]葛家理油气层渗流力学[M]北京:石油工业出版社,1982
• [3]朱德武气井当前产能计算新方法[J]钻采工艺,2000.
• [4]叶敬东低渗透油气田开发译文集[M]北京:石油工业出版社,1992