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.
1 introduced the use of the derived values when calculating STOOIP. The electrical tools also have a number of qualitative uses, principle of which are (i) indications of lithology, (ii) facies and electro-facies analysis, (iii) correlation, (iv) determination of overpressure,
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