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A COMPUTER-IMPLEMENTED METHOD AND A SYSTEM FOR DETERMINING EFFECTIVE ELASTIC PROPERTIES OF A SAMPLE OF A POROUS MEDIUM

机译：确定多孔样品有效弹性特性的计算机实现方法和系统

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摘要

A computer-implemented method for determining effective elastic properties of a sample of a porous medium includes the selection of some sub-volumes in the volume of a sample of a porous medium. The sample is scanned and the obtained three dimensional digital image of the sample is used for creating three dimensional digital representations of the selected sub- volumes of the sample. The initial set of the representative volume element (RVE) is selected from the created digital representation of every sub-volume. The calculations of porosity are fulfilled for every selected RVEs and obtained values are compared with the value of porosity for the sample. If the values are the same or have the small relative difference, these RVEs are used for creation of numerical models and further application of the Direct Homogenization method for definition of effective elastic properties for every selected RVE. If the value of porosity is not the same or the relative difference in values of porosity for RVE and the sample is higher than defined value, the volume of the RVE must be increased via re-selection of RVE's volume in digital representation of sub-volume of the sample. The process may be repeated several times for every initially defined RVE until is meeting the requirements about porosity. The finally defined RVE for every case is used for definition of effective elastic properties.

机译：确定多孔介质样品的有效弹性性能的计算机实现的方法包括选择多孔介质样品的体积中的一些子体积。扫描样品，并将获得的样品三维数字图像用于创建样品所选子体积的三维数字表示。从每个子体积的已创建数字表示中选择代表体积元素（RVE）的初始集合。对于每个选定的RVE都满足孔隙率的计算，并将获得的值与样品的孔隙率值进行比较。如果值相同或具有较小的相对差，则这些RVE用于创建数值模型，并进一步应用直接均化方法定义每个选定RVE的有效弹性。如果孔隙率的值不相同或RVE和样品的孔隙率的相对差高于定义值，则必须通过在子体积的数字表示中重新选择RVE的体积来增加RVE的体积样本。对于每个初始定义的RVE，该过程可以重复几次，直到满足有关孔隙度的要求。最终定义的每种情况的RVE用于定义有效的弹性。

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公开/公告号WO2017086825A1

专利类型
公开/公告日2017-05-26

原文格式PDF
申请/专利权人 SCHLUMBERGER TECHNOLOGY CORPORATION;SCHLUMBERGER CANADA LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V.;
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申请/专利号WO2015RU00798
发明设计人 BELOV DMITRY ALEXANDROVICH;NADEEV ALEXANDER NIKOLAEVICH;PICO YAMID;
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申请日2015-11-17
分类号G01N15/02;G06T7/40;G06T17;
国家 WO
入库时间 2022-08-21 13:30:57

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