Multimineral optimization processing method based on elemental capture spectroscopy logging

作     者：冯周 李心童 武宏亮 夏守姬 刘英明 

作者机构：Research Institute of Petroleum Exploration and Development of Petro China Beijing China School of Earth and Space Sciences Peking University Beijing China School of GeoScience University of Edinburgh Edinburgh UK 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2014年第11卷第1期

页      面：41-49,116页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：sponsored by the National S&T Major Special Project(No.2011ZX05020-008) 

主　　题：ECS log, optimization, multimineral, lithological profile 

摘      要：Calculating the mineral composition is a critical task in log interpretation. Elementalcapture spectroscopy （ECS） log provides the weight percentages of twelve common elements,which lays the foundation for the accurate calculation of mineral compositions. Previousprocessing methods calculated the formation composition via the conversion relation betweenthe formation chemistry and minerals. Thus, their applicability is limited and the methodprecision is relatively low. In this study, we present a multimineral optimization processingmethod based on the ECS log. We derived the ECS response equations for calculating theformation composition, then, determined the logging response values for the elements ofcommon minerals using core data and theoretical calculations. Finally, a software modulewas developed. The results of the new method are consistent with core data and the meanabsolute error is less than 10%.