HRDL高分辨率双侧向测井仪与普通双侧向测井仪探测特性研究  

On the Response Characteristics of High Resolution Dual Laterolog and Common Dual Laterolog

作　　者：冯琳伟 汤天知 贺飞 徐拥 孙军军 贺晓真 

机构地区：[1]中国石油集团测井有限公司,陕西西安710077 [2]中国石油集团川庆钻探工程有限公司测井公司,重庆400021 [3]中国石油天然气管道局第五工程公司,河北廊坊065000

出　　处：《测井技术》2013年第5期481-486,共6页Well Logging Technology

摘　　要：介绍了HRDL高分辨率双侧向测井仪的原理及特点。为详细分析HRDL和普通双侧向测井仪电极系之间的探测特性差异,采用数值模式匹配算法(NMM)建立了不同地层模型,对2种电极系结构进行测井响应数值模拟。2种电极系探测深度和侵入特性接近,但HRDL对薄层分辨能力比普通双侧向测井仪强,层界面显示清晰;在中高电阻率地层,HRDL测量值与普通双侧向测井仪吻合较好,但在低电阻率地层,2种电极系由于受井眼影响程度不同,测量曲线幅度存在明显差异。Introduced is the principle and characteristics of the High Resolution Dual Laterolog Logging Tool （HRDL）. To detail the characteristic differences between HRDL and common Dual Laterolog, according to the operating principles, the authors simulate the log responses of the two electric sondes for various formation models using the numerical mode matching algorithm （NMM）. The simulation results show that, compared to the common dual laterolog, HRDL has a higher thin bed resolution and more distinct response characteristics in thin interbeds. In medium and higher resistance layers, response values of the two electric sondes almost coincide; while in lower resistance layers, measurements of the two electric sondes are obviously different due to influence of the borehole effect.

关 键 词：高分辨率双侧向测井 探测深度 纵向分辨率 井眼影响 侵入 电极系 数值模拟 

分 类 号：P631.84[天文地球—地质矿产勘探]