随钻核磁共振测井技术在南海西部油田开发井中的应用  

Application of Nuclear Magnetic Resonance Logging While Drilling Technology in Development Wells in Western South China Sea Oilfield

作　　者：吴进波 杜坤 王锋 高云龙 谢献辉 WU Jinbo;DU Kun;WANG Feng;GAO Yunlong;XIE Xianhui(Zhanjiang Branch of CNOOC(China)Ltd.,Zhanjiang,Guangdong 524057,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang),Zhanjiang,Guangdong 524057,China;CNOOC Ener Tech-Drilling&Production Co.,Zhanjiang,Guangdong 524057,China)

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]南方海洋科学与工程广东省实验室(湛江),广东湛江524300 [3]中海油能源发展股份有限公司工程技术分公司,广东湛江524057

出　　处：《海洋石油》2024年第3期94-98,104,共6页Offshore Oil

摘　　要：为保证南海西部海域复杂地质条件下钻井作业安全,降低钻井过程中井下仪器遇阻遇卡的风险,并满足地质油藏对储层孔隙度参数的需求。该文介绍了贝克休斯公司随钻核磁共振测井仪器基本结构,通过在该区域应用随钻核磁仪器的经验,总结作业过程中的注意事项,并对随钻核磁测井数据质量控制方法和环境影响因素及校正方法进行分析。通过对三口井的随钻核磁共振测井与传统的中子、密度仪器同时测量结果的对比分析,发现两者孔隙度相对误差为2.32%,满足储量评价规范标准。结果表明,在南海西部海域复杂地质条件下,使用随钻核磁共振测井仪器替代带放射性源的中子、密度仪器是可行的。To ensure the safety of drilling operations in the complex geological conditions of western South China Sea,reduce the risk of stuck or hindered downhole instruments during drilling,and meet the demand for reservoir porosity parameters in geological reservoirs.This paper introduces the basic structure of logging-while-drilling(LWD)nuclear magnetic resonance(NMR)logging instrument of Baker Hughes.Based on the experience of applying the LWD NMR tool in this region,it summarizes the precautions during the operation process and analyzes the quality control methods for LWD NMR logging data as well as the environmental impact factors and correction methods.Through a comparative analysis of the results of simultaneous measurements of LWD NMR logging with traditional neutron and density instruments on three wells,it was found that the relative error of porosity between them was 2.32%,which meets the standards of reserve evaluation specifications.The results indicate that it is feasible to replace neutron and density instruments with radioactive sources with LWD NMR logging instruments in the complex geological conditions of western South China Sea.

关 键 词：随钻核磁 核磁孔隙度 核磁渗透率 含氢指数 

分 类 号：P631.8[天文地球—地质矿产勘探]