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.
出处
《测井技术》
CAS
CSCD
北大核心
2013年第5期481-486,共6页
Well Logging Technology
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
high resolution dual laterolog, investigation depth, vertical resolution, boreholeeffect, invasion, electric sonde, numerical simulation
