测井技术2025，Vol.49Issue(3)：365-377,13.DOI:10.16489/j.issn.1004-1338.2025.03.005
油基钻井液条件下页岩油储层气测和地化录井影响校正及参数计算研究
Correction and Parameter Calculation of Gas Logging and Geochemical Logging Interference in Shale Oil Reservoirs under Oil-Based Drilling Fluid Conditions
摘要
Abstract
During the process of oil and gas exploration,logging data is of great significance for the interpretation and evaluation of reservoirs.However,when oil-based drilling fluids are used in the drilling operations of complex wells,due to the large amount of petroleum and its derivatives contained in the oil-based drilling fluids,the data of gas logging and geochemical pyrolysis logging will be distorted,affecting the accurate identification and evaluation of reservoirs.This paper proposes a correction approach for the gas logging and geochemical pyrolysis logging data of shale oil reservoirs in Block X affected by oil-based drilling fluids.This paper takes into account the dual influences of environmental factors and oil-based drilling fluids on gas logging data,and based on the multi-component gasoline ratio calculation model,a more suitable multi-component volumetric gasoline ratio calculation model for Block X is proposed.For the geochemical pyrolysis logging data,this paper comprehensively analyzes the core pyrolysis experimental data of four wells,namely X-1,X-4,X-5 and X-8.By combining with conventional logging curves,a geochemical parameter calculation model is established to correct the influence of oil-based drilling fluids.The results show that the average coincidence rate between the calculated values and the experimental values reaches 91%.This study provides an effective method for the fine evaluation of shale oil reservoirs under the condition of oil-based drilling fluid,helps to improve the reliability of reservoir identification and evaluation,and is of great significance for the application of logging data in the exploration and development of shale oil.关键词
油基钻井液/页岩油储层/气测录井/地化热解录井Key words
oil-based drilling fluid/shale oil reservoir/gas logging/geochemical pyrolysis logging分类
天文与地球科学引用本文复制引用
郑珊珊,孙建孟,杨冬,张恒荣,成家杰,王猛..油基钻井液条件下页岩油储层气测和地化录井影响校正及参数计算研究[J].测井技术,2025,49(3):365-377,13.基金项目
国家自然科学基金项目"基于数字岩石的深部煤层气弹性和声学响应机理研究"(42474156) （42474156）
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）
