Borehole deformation based in situ stress estimation using televiewer data

作     者：Hamid Roshan Danqi Li Ismet Canbulat Klaus Regenauer-Lieb Hamid Roshan;Danqi Li;Ismet Canbulat;Klaus Regenauer-Lieb

作者机构：School of Minerals and Energy Resources EngineeringUniversity of New South WalesSydneyNSW2052Australia WA School of MinesMineralsEnergy and Chemical EngineeringCurtin UniversityPerthWA6102Australia 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2023年第15卷第9期

页      面：2475-2481页

核心收录：

学科分类：08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：support from the Australian Research Council (ARC) through the Discovery Project 

主　　题：In situ stress Borehole deformation Televiewer Elastic properties Downhole logging 

摘      要：The knowledge of in situ stress is critical in safe and optimised extraction of minerals and energy *** situ stresses are either measured directly(***)or estimated indirectly(*** breakouts).Borehole breakout analysis for in situ stress estimation is considered a relatively simple and cost-efficient *** technique,however,poses certain limitations such as complexities with progressive formation of breakouts and it requires inputs such as rock failure parameters that are not often *** a result,significant effort has been made to develop new indirect methods for in situ stress *** deformation analysis using four-arm caliper has been recently proposed for in situ stress estimation and has shown promising *** this study,we demonstrate a new methodology that analyses the borehole televiewer data with the technique of borehole deformation analysis to estimate the in situ stresses through a field case *** advantages and challenges of using borehole televiewer data for stress estimation based on borehole deformation analysis are discussed and the best practice to obtain the reliable results is *** limitations of using fourarm caliper and borehole deformation analysis for in situ stress estimation are also discussed and it is shown how televiewer data can overcome such ***,the in situ stress results obtained from televiewer data and borehole deformation analysis are compared with independent in situ stress measurements to show the robustness and reliability of the proposed methodology.