This is an abbreviation for a well log used in the oil and gas industry. You might have encountered this acronym
RILM in your log evaluation software or any (ASCII) log files provided by the logging company. The abreviatin stands for
'Medium induction resistivity'. The usage of this log is well established. This log helps to evaluate the resistivity, 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 resistivity 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
'Resistivity'. This is the property of a material which resists the flow of electrical current. The ratio of electric-field intensity to current density. The reciprocal of conductivity.
Data for this log is produced by a tool that uses a induction logging technique and can be used to investigate the resistivity of the formation. Similar logs are listed below: