Permeability prediction by hydraulic flow units - Theory and applications
Permeability prediction by hydraulic flow units - Theory and applications
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DOI：
10.2118/30158-pa
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发表时间：
1996-12-01
期刊：
影响因子：
--
通讯作者：
Fujimoto, F
中科院分区：
文献类型：
--
作者：
Abbaszadeh, M;Fujii, H;Fujimoto, F
提出了一种基于水力流动单元或水力单元（HU's）概念的改进方法来计算未取芯威尔斯井的渗透率分布。提出了用图解概率法、非线性回归和Ward分析算法对岩心数据进行聚类分析，识别地层中的优势HU。接下来讨论基于贝叶斯的概率方法来估计已测井威尔斯中的HU和渗透率分布。这是一个逆问题，需要构建先验训练数据库来捕获岩心导出的HU与各种测井测量值之间的隐式关系。从数据库中提取统计信息，以推断目标测井威尔斯的HU分布。该方法适用于两个非均质油藏，碳酸盐岩地层和层状砂岩地层。通过HU方法和其他常规技术计算的渗透率的比较，证明了HU方法的实用性。
An improved technique based on the concept of hydraulic flow units or hydraulic units (HU's) is presented to calculate permeability distribution in uncored wells. Graphical probability methods, nonlinear regression, and the Ward's analytical algorithm are presented to perform cluster analysis on core data and identify prevailing HU's in a formation. A Bayesian-based probabilistic approach is discussed next to estimate HU's and permeability distributions in logged wells. This is an inverse problem that requires constructing an a priori training database to capture implicit relationships between core-derived HU's and various well log measurements. Information from the database is drawn statistically to infer HU distributions at target logged wells. The method is applied to two heterogeneous reservoirs, a carbonate formation, and a laminated sandstone formation. Comparisons of permeabilities calculated by the HU approach and other conventional techniques are provided that demonstrate the usefulness of the-HU method.