石油学报 ›› 1990, Vol. 11 ›› Issue (2): 49-57.DOI: 10.7623/syxb199002005

• 地质勘探 • 上一篇    下一篇

GLOBAL测井解释方法Incoherence函数性质研究

肖立志, 钟兴水   

  1. 江汉石油学院
  • 收稿日期:1987-11-11 出版日期:1990-04-25 发布日期:2013-07-08

STUDY ON THE INCOHERENCE FUNCTION IN GLOBAL PROGRAM

Xiao Lizhi, Zhong Xinshui   

  1. Jianghan Petroleum Institute, Jiangling, Hubei
  • Received:1987-11-11 Online:1990-04-25 Published:2013-07-08

摘要: 本文对GLOBAL测井解释方法的Incoherence函数进行了系统研究.讨论了Incoherence函数的建立;分析了解的意义,置信区间及减小非相干函数值的含义;检验了层参数,响应函数和误差项对求解结果的影响;最后,提出了改进GLOBAL方法求解效果的一些建议.本文的结论适合于测井资料最优化解释方法的理论和实际应用.建议:(1)慎重选择层参数、响应方程和有关误差项;(2)选用受初值影响小的算法,并求出极小最小二乘解;(3)对求解结果进行评价,即找出解的估值与真值的关系,以便由估值了解真值或真值的变化范围.

关键词: 测井解释方法, 性质研究, 相干函数, 测井响应方程, 惩罚函数法, 误差项, 非相干, 测井数据, 函数值, 极小最小二乘解

Abstract: The INCOHERENCE function in the GLOBAL program is studied in this paper.The formalation of the INCOHERENCE function is discussed,The meaning of the solution,the significance of the confidence interval and the reduced incoherence are analyzed.The influence of zone parameters,response functions and uncertainties to solution are tested,Finally,some suggestions are proposed for getting good interpretation results in GLOBAL technique.The conclusions of this paper can be applied in the theory and practical application of optimum well logs interpretations.