测井技术2018，Vol.42Issue(2)：145-148,162,5.DOI:10.16489/j.issn.1004-1338.2018.02.004
结合地层元素测井和密度测井提高孔隙度评价精度
An Improved Method to Evaluate Porosity with the Combination of Formation Elemental Logging and Density Logging
摘要
Abstract
The conventional logging evaluation methods can not accurately calculate porosity in the reservoirs w hich are characterized by complex mineral components and contents.In order to solve this problem,formation element logging is combined with density logging to improve the evaluation accuracy of porosity. A new optimization method based on multi-objective programming(MOP)is used to obtain high-precision mineral contents by inversing the element contents measured directly from formation element logging.Based on that,the matrix density can be calculated,and the precise porosity can be obtained with the combination of density logging data.Comparing the results of this new method with the core analysis results to validate the accuracy of this method.It is found that the correlation coefficient between them is higher than the conventional methods such as density logging method and the neutron-density crossplot method,w hich proves that this method can improve the accuracy of porosity evaluation.关键词
地层元素测井/密度测井/孔隙度评价/精度提高Key words
formation elemental logging/density logging/porosity evaluation/accuracy improve-ment分类
天文与地球科学引用本文复制引用
袁超,马萌,周灿灿,冯周,施宇峰..结合地层元素测井和密度测井提高孔隙度评价精度[J].测井技术,2018,42(2):145-148,162,5.基金项目
国家油气重大专项(2016ZX05046002-003) （2016ZX05046002-003）
中国石油天然气集团公司科学研究与技术开发项目(2016A-3601) （2016A-3601）
