دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: schlumberger wireline tool thatprovide continuous, orientated borehole vimages. Applications include structural analysis. Fracture identification and analysis, sedimentary analysis, high resolution reservoir analysis,and depth matching/orientation of core

a tool that produces the effect of one elongated current electrode from which current flows radially in all directions to a distant current-return electrode. The output from the tool can be focused to improve logging resolution in thin beds.

n: the smallest change in the quantity measured to which the instrument will react with an observable change in an analog or digital indication.

n: a prover with a volume between detectors that does not permit a minimum accumulation of 1,000 direct (unaltered) pulses from the meter. Small-volume provers require meter pulse discrimination by pulse interpolation counter or other techniques to increase the resolution.

n: the spacing on a neutron logging device between the neutron source and the detector. Total count rate, porosity resolution, and borehole effects influence source-detector spacing. The spacing is selected specifically for the source-detector characteristics exhibited by each device;optimum spacings must be determined for each tool.