Transcription of 19. ELECTRICAL LOGGING 19.1 Introduction
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19. ELECTRICAL LOGGING 19.1 Introduction
Petrophysics MSc Course Notes ELECTRICAL LogsDr. Paul Glover Page logs are perhaps the most important tools available to a petrophysicist. This is because theyprovide a method for calculating the water saturation, upon which calculations of STOOIP are were also some of he first logs to be used, with Marcel and Conrad Schlumberger testing out anelectrical log for the first time in 1927 in the Pechelbronn field, first measurements were continuous recordings using 2 or 3 electrodes and a direct current. Itwas discovered that high quality recordings of apparent resistivity could be obtained under favourableconditions of small diameter boreholes, high mud resistivities and shallow invasion in thick early tools are called electric LOGGING development of ELECTRICAL tools has henceforward been intense.
current into a thin sheet to improve vertical resolution and penetration depth. The laterologs measure resistivity in the conventional sense, and are usually referred to as resistivity tools. Both the induction logs and the laterologs come in different types, which are sensitive to different depths of penetration into the borehole.
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