A combination of [[log|logs]] or a computation procedure for calculating the [[depth of invasion]] and the [[resistivity]] of both invaded and uncontaminated zones, based on a [[dual induction log|dual induction-laterolog]] and a [[proximity log]] or [[microlaterolog]].

For Baker-Atlas: a "Grand-SLAM" is a service combination comprising [[density_log|Density]], [[neutron_log|Neutron]], [[resistivity_log|Resistivity]] and [[sonic_log|Sonic]] measurements (as well as [[gamma-ray_log|Gamma-Ray]]), where "Resistivity" can mean a measurement in resistive or conductive environment to define the [[resistivity]] of the formation.  It is equivalent to a [[small_slam|Mini-SLAM]], with the added [[sonic_log|Sonic]] service.