摘要
利用电磁传播电阻率测井 (EPRL)仪器的响应函数系统地考察了其相位差Δ和幅度比S随不同地层电导率和仪器参数的变化规律。通过分析EPRL的探测特性 ,发现Δ能在较大范围的电导率和源频率内保持良好的探测灵敏度和分辨能力 ,而S的探测灵敏度和分辨率随电导率和源频率减小而迅速下降 ,极大地限制了它的应用范围。
Based on the electromagnetic propagation resistivity logging(EPRL) response functions, studied is the relationship that phase shift ( Δ) and amplitude ratio (S) of EPRL vary with formation resistivity, source frequency and spacings between transmitter and receiver coils. It is found that the resolution and investigative sensitivity of Δ are higher within the wide range of formation resistivity and source frequency; but the S resolution power rapidly decreases while formation conductivity and source frequency reduce; so the applications of S are restricted by its investigating characteristics.
出处
《测井技术》
CAS
CSCD
2004年第4期281-284,共4页
Well Logging Technology
基金
国家自然科学基金资助课题 (编号 497742 4 1 )
