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适应于非均质性储层中低渗透率的г(x) 型分布
引用本文:朱法银,路秀广,张旭升.适应于非均质性储层中低渗透率的г(x) 型分布[J].油气井测试,2001,10(1):1-3.
作者姓名:朱法银  路秀广  张旭升
作者单位:1. 胜利油田职工大学
2. 胜利油田职工大学
摘    要:依据Gamma函数及г(x) 型分布的基本概念,给出了非均质性储层渗透率K的概率密度,分布函数以及基本数字特征的表达式,同时,应用极大似然估计法推导出г(x) 型分布知参数估计值v和ko的解析式,并结合属中低渗透性的临南油田沙三中油层的电油解释资料进行了实例计算,其结果与实际吻合,可作为编制油田开发方案和产能预测的依据。

关 键 词:非均质油气藏  渗透率  Gamma分布  极大似然法
修稿时间:1999年6月8日

(x)Disaibution of Mid-low Permeability in Heterogeneity Reservoir
Zhu Fayin,Lu Xiuguang,ZHANG Xusheng.(x)Disaibution of Mid-low Permeability in Heterogeneity Reservoir[J].Well Testing,2001,10(1):1-3.
Authors:Zhu Fayin  Lu Xiuguang  ZHANG Xusheng
Abstract:According to the basic concept of Gamma function andГ'(x) distribution, this paper gives out some expression including probability density, distribution function and basic numeric characteristic value. Application of the maximum-likelihood es timation method, the paper derives analytic formulae of unknown parameter estimation value and k0. The application of log data of middle of the third segment in linnan oilfield, we calculate its permeability. The result is right. The result pro rides the basis for programming oilfield development plan and forecasting productivity.
Keywords:heterogeneous reservoir  permeability  Gamma distribution  maximum likelihood method
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