新疆石油地质 ›› 1995, Vol. 16 ›› Issue (1): 52-57.

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两种变形的Konbitob衰减曲线研究

俞启泰, 王志刚   

  1. 中国石油天然气总公司石油勘探开发科学研究院 北京 100083
  • 收稿日期:1994-08-27 出版日期:1995-03-01 发布日期:2020-07-28
  • 作者简介:俞启泰: 高级工程师 油田开发

A STUDY ON TWO TRANSFORMED KOPITOV DECLINE CURVES

Yu Qitai, Wang Zhigang   

  1. Senior Engineer, Oilfield Development, Scientific Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083
  • Received:1994-08-27 Online:1995-03-01 Published:2020-07-28

摘要: 对Konbitob衰减曲线进行了研究, 提出了两种变形的Konbitob衰减曲线公式, 其中一种为通式, 另一种相当于Arps双曲线递减指数n=0.5时的衰减曲线公式。提出了变形的衰减曲线递减参数的求解方法;用实际油田数据比较了它们的误差大小, 推荐了误差较小的递减参数计算公式。油藏的调整措施与否对其递减规律有很大影响, 因此应当根据油藏类型与是否实施调整措施来选择衰减曲线公式。

关键词: 产量, 曲线, 衰减, 变形, 误差

Abstract: Kopitov decline curve was examined and two transformed formulae of it were presented: one is general formula, the other corresponds to the case with decline index n = 0.5 of the Arps' hyperbolic curve. The method for getting decline parameters of transformed decline curve was presented. Results were compared with actual production data. thereby recommending the formula with smaller error. Adjustment measures of reservoir produced great effects on decline patterns. Thus, the formula of decline curve should be selected according to types of oil reservoir and adjustment measures to be used.

Key words: Production, Curve, Decline, Transform, Error