高分辨率复电阻率测井仪器设计及现场试验  

Development of High-resolution Complex Resistivity Logging Tool and Case Study

作　　者：童茂松[1] 陶宏根[1] 丁柱[1] 张海[1] 张家举[1] 

机构地区：[1]大庆石油管理局钻探集团测井公司,黑龙江大庆163412

出　　处：《测井技术》2007年第2期166-168,共3页Well Logging Technology

基　　金：大庆石油管理局重大科研资助项目"复电阻率测井研究"(DQKJZB200310)

摘　　要：在特定的频段,泥质砂岩的复电阻率存在明显的频散现象,这种频散与地层含油饱和度的关系密切,是目前复电阻率测井的基础。根据实验研究和理论结果,研制了复电阻率测井仪器,仪器频率为35 Hz和8.5 kHz,采用聚焦工作方式,电极系采用三侧向电极系,测量2个频率下的电阻率。现场实验表明2个频率下的复电阻率基线稳定,测量准确,分辨率达到0.4 m,能够满足大庆油田薄层水淹层的测井要求。资料分析表明,低频电阻率与高频电阻率的比值能够较好地反映地层含油饱和度。The complex resistivity logging is based on frequency dispersion of rock resistivity at special frequencies. The dispersion relates to water saturation in shaly sand formations. The complex resistivity well logging tool with electrode antenna was developed on basis of theoretical and experimental study of rock physical property. It has a focused sonde as same as laterlog-3 logging tool＇s. The real-part component resistivity of low frequency （35 Hz） and the module of complex resistivity of high frequency （8. 5 kHz） can be measured downhole. Field experiment shows that the complex resisitivity logging tool is stable and has high resolution of 0. 4 m. The ratio of low-to-high frequency resisitivity can be calculated and be used to better evaluate oil-bearing property of reservoir. The logging tool suits interpretation of thin water-flooded formation of Daqing Oilfield.

关 键 词：测井仪器 复电阻率测井 研制 应用 

分 类 号：P631.33[天文地球—地质矿产勘探]