物探与化探2016，Vol.40Issue(5)：986-990,5.DOI:10.11720/wtyht.2016.5.23
疏松砂岩干岩石模量研究
Research on the dry modulus of the unconsolidated sandstone
摘要
Abstract
At present,the study of loose sand mainly focuses on some commonly used models which are based on the Hertz⁃Mindlin and Walton contact theories.In this paper,the authors tested the capability of various rock physics models to predict dry modulus of the sand samples by comparing the estimates with results measured in laboratory. The study shows that the traditional model of unconsolidated sand is not good at characterizing its elastic properties.Using either the HMR or HMS theories to define the high porosity endpoint gives a lower⁃prediction of the dry bulk modulus which will have a much bigger error when combined with HS lower bounding equation.Both HMR and WR result in an over⁃prediction of the dry shear modulus because they do not consider the deformation across the contact.As WS cannot give a good fit to all the areas,it is rarely used.Despite the fact that the results are somewhat lower than the real data,the dry modulus is best described by HMS.With the help of the HS higher bounding equation,the predicted dry modulus agrees fairly well with the measured data.So the new constructed method has better application effect and deserves much attention.关键词
疏松砂岩模型/Hertz-Mindlin/Walton/Hashin-Shtrikman/HMS/HMR/WR/WSKey words
unconsolidated sand model/Hertz-Mindlin/Walton/Hashin-Shtrikman/HMS/HMR/WR/WS分类
天文与地球科学引用本文复制引用
魏冰涛,杨国权,曹文俊..疏松砂岩干岩石模量研究[J].物探与化探,2016,40(5):986-990,5.基金项目
国家重点基础研究发展计划（“973”计划）项目（2014CB239006，2011CB202402）；国家自然科学基金项目 （）
