测井技术2025，Vol.49Issue(2)：179-188,10.DOI:10.16489/j.issn.1004-1338.2025.02.005
涠西南流二段页岩油地化录井饱和度计算方法研究
Oil Saturation Estimation With the Shale Oil Geochemical Mud Logging for the Liu 2 Member of the Weixi South Sag
摘要
Abstract
In shale oil exploration and development,oil saturation is a key parameter for evaluating shale oil resources.But current methods for calculating shale oil saturation mainly rely on experimental evaluation,with few studies using logging data.This paper proposes a shale oil saturation calculation method based on geochemical logging data,using nuclear magnetic resonance(NMR)experiments and closed pyrolysis logging.Through multi-state NMR experiments,an NMR fluid component chart for the Weixi south sag is constructed,and NMR saturation is calculated using the fluid volume method.Meanwhile,movable oil content and total oil content are obtained via closed pyrolysis experiments.Combining these experimental results with parameters like rock density and total porosity,an improved closed pyrolysis logging saturation model based on NMR technology is developed.In practical application,considering possible hydrocarbon loss during on-site geochemical logging,a lost hydrocarbon correction model is built using closed pyrolysis logging data.This forms an evaluation method for calculating shale oil saturation based on geochemical logging data.Results from a case study show that the absolute errors for movable oil saturation and oil saturation are 3.82%and 8.81%,respectively,with calculation ranges of 11%～46%and 30%～91%.This method offers a new approach for evaluating shale reservoir saturation using logging data.关键词
页岩油/核磁共振(NMR)/地化录井/损失烃校正/饱和度模型/涠西南凹陷Key words
shale oil/nuclear magnetic resonance(NMR)/geochemical logging/lost hydrocarbon correction/saturation model/Weixi south sag引用本文复制引用
姚熠博,成家杰,王猛,董宇,孙建孟..涠西南流二段页岩油地化录井饱和度计算方法研究[J].测井技术,2025,49(2):179-188,10.基金项目
国家自然科学基金项目"木里低阻水合物响应机理数值模拟分析研究"(41874138) （41874138）
国家科技重大专项课题"含气性多参数联测与导电机理实验研究"(2017ZX05036-005-003) （2017ZX05036-005-003）
中海油田服务股份有限公司技术服务项目"涠西南凹陷页岩油四性测录井评价研究"(YJB23YF001) （YJB23YF001）
