石油学报 ›› 1999, Vol. 20 ›› Issue (3): 62-65.DOI: 10.7623/syxb199903011

• 油田开发 • 上一篇    下一篇

利用生产测井资料反求油井动态参数

郑希科1, 谢荣华1, 谭廷栋2, 王晓荣1, 曾桂红 1   

  1. 1. 大庆石油管理局生产测井研究所;
    2. 石油勘探开发科学研究院 北京
  • 收稿日期:1998-04-23 出版日期:1999-05-25 发布日期:2010-05-21
  • 作者简介:郑希科,男,1963年10月生。1985年毕业于长春地质学院,1988年获(石油大学)硕士学位。现任大庆石油管理局生产测井研究所高级工程师。通讯处;黑龙江省大庆市。邮政编码:163453。

OBTAINING PERFORMANCE PARAMETERS BY MEANS OF PRODUCTIN LOGGING DATA

Zheng Xike 1   

  1. The Production Logging Institute of the Daqing Petroleum Administration
  • Received:1998-04-23 Online:1999-05-25 Published:2010-05-21

摘要: 提出了利用生产测井同时测量的关井压力与续流量并结合最优化处理进行试井分析的方法,有效地消除了井储效应,达到了利用早期压力恢复数据获得地层参数的目的。在变流量基本方程(杜哈美原理)基础上推导出了关井压力变化方程,利用实测续流量和地层参数预估值计算理论关井压力。在最小二乘法的基础上,建立了关于理论压力和实测压力具约束条件的非线性目标函数,约束条件为地层参数的范围和实测流压。用最优化方法求解此目标函数,由计算机不断调整参数预估值使其达到最小,理论压力和实测压力匹配,从而反求地层参数。为了进行对比,文中同时以具有井储效应的均质油藏模型为例计算理论关井压力,用同样的方法求取地层参数。文中处理了三口油井的实测早期资料。从资料的处理和对比结果来看,该所述方法简单、结果可靠,可以作为其它解释方法的对比与验证手段。

关键词: 生产测井, 关井压力, 续流量, 历史拟合, 最优化方法

Abstract: A method for well testing interpretation is presented in this paper.The effect of well-bore storage is well eliminated and the goal to hunt for formation parameters is achieved by using early build-up formation.On the basis of variable flow rate equation (Huhamel's Principle),the shut-in pressure is grasped and utilized to calculate theoretical pressure by means of measured after-flow rate and prestimated value of formation parameters.The Least Square Principle is adopted to establish a non-linear objective function with constraint conditions.The objective function is the sum of Error Square between calculated and measured pressure.And the constraint conditions are the value range of the formation parameters and the measured flowing pressure.The optimized methods are uaed to minimize the objective function by adjusting the pre-estimated values of parameter repeatedly by computer.The formation parameters are acquired when the calculated pressure matches with the measured pressure and the objective function has the least value.A homogenous reservoir model is taken as an example to calculate the theoretical shut-in pressure in order to contrast,and the same method is applied to interpret the formation parameters.The three early measured data has been processed in the paper.From the viewpoint of processed data and contrasted results, the method described by this paper is simple,reliable,and can serve as a means of contrast and verification for other interpretation techniques.

Key words: production logging, shut-in pressure, after-flow, history match, optimized method