This is a well log used in the oil and gas industry. You might have encountered this acronym
CEIM in your log evaluation software or any (ASCII) log files provided by the logging company. The acronym stands for
'Medium conductivity from EID processing'. Usage of this log is not high and encountering it is a rare occasion. This log displays readings of the conductivity, made by an induction log, which represents a measurement made approximately two to three feet into the formation.
Simply said, this is a log that describes the conductivity which represents a measurement made approximately two to three feet into the formation; generally considered to measure the formation where it contain fluids which are a mixture of mud filtrate, connate water and possibly hydrocarbons.This log usually has the unit
'Conductivity'. This is the quantity of electricity transferred across unit area per unit potential gradient per unit time. In isotropic material, it is the reciprocal of Resistivity. Sometimes called Specific Conductance.
Data for this log is produced by a tool that uses a induction logging technique and can be used to investigate the conductivitty of the formation. Similar logs are listed below: