Scale Division For Nuclear Magnetic Resonance Logging Tool

In the field of well logging, the"scale division"is equal to the"calibration"in metrology, in order to establish a reasonably, accurate well logging tools'scale division system, logging information's qualities'explanation is one of the important keys.This thesis lies in how to design a correctly and reasonable logging tools'scale division of the nuclear magnetic resonance, thus will guarantee logging tools'data's output, and also can correctly reflect the measured stratum's inherent physical standard size of parameter, that will enhance the nuclear magnetic resonance logging information's explanation precision.The thesis based on the petroleum logging tools'scale division's general standard, has firstly introduced the nuclear magnetic resonance well logging's physical foundations and principles, and secondly made contrast with the nuclear well logging system's in gamma-ray logging and in the electricity oil well logging system's array induction logging on the physical foundation, then thirdly made a deep study of the nuclear magnetic resonance logging tools'scale division principle and its realizes.Including, taking the empirical formulas and the petroleum logging tools'scale division'standard as basis, this article elaborated its scale division principle and the scale division processes, establishing the transformation relations between nuclear logging instrument's output data and the inherent physical parameter standard sizes, then taking examinations, thus realizes the accurate scale division.With the l conditions of laboratory, carried on experiment of the nuclear magnetic resonance logging tools'main scale division processes. According to the well logging's professional scale merit materials, demonstrated that the experimental results were in a reasonable error range. The experimental result indicated that designs the scale division method can in the laboratory simulation working conditions situation, accurate, reasonable complete the scale division, achieves the scale division goal.