Micro Spherical Focused Logging Tool (EMSF70) The Micro Spherical Focused Logging Tool (EMSF70) is a current focused micro resistivity well logging tool with mud cake compensation. The invaded zone resistivity value measured by EMSF70 minimized the influence of mud cake because the instrument has a specially designed electrode configuration and a particular measurement method. EMSF70 can provide the borehole caliper log.

Diameter: 4.21 in (107mm)

Log