Simultaneous upscaling of two properties of reservoirs in one dimension using adaptive bandwidth in kernel function method

• 作者: ABOLGHASEM Kamkar Rouhani BEHZAD Tokhmechi EHSAN Baratnezhad MOHAMMAD Arashi MOHAMMAD Reza Azad
• 来源期刊: 石油勘探与开发:英文版
• 学科: 工学
• 关键词: RESERVOIR properties SIMULTANEOUS upscaling primary MODEL simulation MODEL adaptive BANDWIDTH KERNEL function
• 年，卷（期）: 2019,（4）
• 页码范围: 746-752
• 页数: 7页
• 分类号: TE142

摘要

Upscaling of primary geological models with huge cells, especially in porous media, is the first step in fluid flow simulation. Numerical methods are often used to solve the models. The upscaling method must preserve the important properties of the spatial distribution of the reservoir properties. An grid upscaling method based on adaptive bandwidth in kernel function is proposed according to the spatial distribution of property. This type of upscaling reduces the number of cells, while preserves the main heterogeneity features of the original fine model. The key point of the paper is upscaling two reservoir properties simultaneously. For each reservoir feature, the amount of bandwidth or optimal threshold is calculated and the results of the upscaling are obtained. Then two approaches are used to upscaling two properties simultaneously based on maximum bandwidth and minimum bandwidth. In fact, we now have a finalized upscaled model for both reservoir properties for each approach in which not only the number of their cells, but also the locations of the cells are equal. The upscaling error of the minimum bandwidth approach is less than that of the maximum bandwidth approach.