海相油气地质2025，Vol.30Issue(6)：625-631,7.DOI:10.3969/j.issn.1672-9854.2025.06.008
核磁测井与常规测井储层参数联合反演研究
Joint inversion of reservoir parameters based on NMR logging and conventional logging data:taking the low resistivity oil layer of Zhujiang Formation in the Wenchang 16 structure,Pearl River Mouth Basin as an example
摘要
Abstract
Typical oil and gas reservoirs with radioactive minerals,characterizing by high natural gamma and low resistivity of logging,are developed in the Zhujiang Formation of Wenchang 16 structure in the Pearl River River Mouth Basin.The shale content calculated with conventional interpretation methods is often significantly high,which leads to large errors in reservoir parameter calculation,resulting in the missed identification of effective oil and gas layers.Based on the advantages of precise characterization of reservoir pore structure using nuclear magnetic resonance(NMR)logging data,the differences in logging response characteristics between typical mudstone and low-resistivity oil and gas reservoirs in the study area are systematically analyzed.By optimizing the traditional volume model and innovatively introducing the Rkn parameter of NMR logging,an improved volume model response equation is established.By combining this equation with conventional logging data,an optimization algorithm is used to accurately calculate the relative content of reservoir components(including silt,shale,etc.),and further improve the calculation accuracy of key reservoir parameters such as porosity and saturation.The practical application shows that this method has achieved remarkable results in the evaluation of high-gamma reservoirs of many oilfields in the Pearl River Mouth Basin,and effectively solved the problem of parameter calculation caused by the interference of radioactive minerals.This method has important application value for the evaluation of shallow unconsolidated sandstone reservoirs with similar geological characteristics,and provides a new technical idea for the fine evaluation of complex reservoirs.关键词
低阻油层/核磁测井/最优化算法/储层参数/联合反演Key words
low-resistivity oil layer/nuclear magnetic resonance(NMR)logging/optimization algorithm/reservoir parameters/joint inversion分类
能源科技引用本文复制引用
张顺超,李芳,汤翟,吴一雄,骆玉虎,吴勃翰,申富豪..核磁测井与常规测井储层参数联合反演研究[J].海相油气地质,2025,30(6):625-631,7.基金项目
本文受中国海洋石油有限公司综合科研项目"中国海油测井解释软件系统研发与国产化替代(Ⅰ期)"(编号:KJZH-2024-1903)资助 （Ⅰ期）
