西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (3): 1-4.DOI: 10.3863/j.issn.1000-2634.1999.03.001

• 油气藏工程 •    下一篇

双曲递减参数求解的非线性曲线拟合法

陈林媛1 杜志敏2

  

  1. (1.中原石油勘探局采油四厂,河南省濮阳市457073;2.西南石油学院石油工程系)
  • 收稿日期:1999-03-11 修回日期:1900-01-01 出版日期:1999-08-20 发布日期:1999-08-20
  • 通讯作者: 陈林媛

NON-LINEAR CURVE MATCHING FOR CALCULATING HYPERBOLIC DECLINE PARAMETERS

CHEN Linyuan1 DU Zhimin2   

  1. (1.Production plant No.4; ZPEB 2.JOURNAL OF SOUTHWEST PETROLEUM INSTITUTE)
  • Received:1999-03-11 Revised:1900-01-01 Online:1999-08-20 Published:1999-08-20
  • Contact: CHEN Lin-yuan

摘要: Arps递减规律分为指数递减、双曲递减和调和递减三种。双曲递减是较广泛应用的一种递减,递减参数解法较多。对于严格遵守递减规律油气藏的递减参数计算,各算法结果相近,结果可靠。但对于产量非严格遵守递减规律油、气藏及井,各方法计算结果相差悬殊。以往通常使用试凑法解决产量非严格遵守递减规律油气藏的递减参数,这种方法人为因素大,且多解。为了更好的解决上述问题,调研国内外诸多文献,基于对Arps递减方程及其参数计算求解方法的研究基础上,建立提出递减规律的非线性模型。应用非线性曲线拟合法,计算递减参数。残差分析结果表明,该方法具有单一解特点,且拟合精度高。为产量非严格遵守递减规律油藏的递减曲线分析提供一种有效的方法。

关键词: 产量递减, 数学模型, 非线性, 曲线拟合, 解析法 

Abstract: The Arps equation involves exponential decline, hyperbolic decline and harmonic decline, in which the hyperbolic decline equation is widely used and can be solved in many methods. Their results are similar and reliable for oil and gas reservoir, which production strictly follows decline type.However,the difference of solutions is remarkable if reservoirs and wells do not strictly obey the decline type.To solve the problem,a pure non-linear model is developed on the basis of the Arps hyperbolic decline

Key words: production decline, nonlinear, cure fit, analytic model

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