发明名称 |
Method for enhancing vertical resolution of nuclear well logging instruments |
摘要 |
A method for enhancing the vertical resolution of a nuclear well logging tool is set forth. A detector of nuclear radiation is moved along a well borehole to produce measurement data r(z) as a function of depth in the borehole. The data r(z) and a system response function g(z) are transformed into spatial frequency domain (f) counterparts of r(z) and g(z), the counterparts being R(f) and G(f). A window W(f) in the spatial frequency domain based on the function R(f) is defined. That smoothly eliminates the high frequency noise. A new profile function P(f) is obtained by dividing the filtered R(f) by the function G(f) to deconvolve R(f). The inverse Fourier transform of P(f) yields a vertically enhanced profile p(z) in the depth domain.
|
申请公布号 |
US5506769(A) |
申请公布日期 |
1996.04.09 |
申请号 |
US19940284920 |
申请日期 |
1994.08.02 |
申请人 |
HALLIBURTON LOGGING SERVICES, INC. |
发明人 |
FU, CHU-CHIU;GIANZERO, STANLEY C.;TORRES, DAVID O. |
分类号 |
G01V5/04;G01V5/10;(IPC1-7):G06F167/00 |
主分类号 |
G01V5/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|