A system comprising: an electromagnetic logging tool having a plurality of transmitter-receiver measurement couplings, wherein the electromagnetic logging tool is configured to be disposed within a subsurface formation of a wellbore and configured to obtain electromagnetic measurements corresponding to a measurement of a subsurface formation property of the wellbore , and wherein the electromagnetic measurements relate to one or more characteristics of materials along a trajectory of the wellbore at a plurality of depths; and a processor configured to: receive the electromagnetic measurements from the electromagnetic logging tool disposed in the subsurface formation; determine a noise threshold based upon a selected transmitter-receiver measurement coupling of the electromagnetic logging tool and the electrical noise of the electromagnetic logging tool ; determine a resistivity ratio based upon the received electromagnetic measurements; model a signal response of the electromagnetic logging tool using the resistivity ratio; plot a first curve representative of the signal response as a function of signal strength and depth of investigation distance and a second curve representative of the noise threshold; and determine a maximum depth of investigation into the subsurface formation as the depth of investigation distance corresponding to where the first and second curves intersect on the plot. an electromagnetic logging tool having a plurality of transmitter-receiver measurement couplings, wherein the electromagnetic logging tool is configured to be disposed within a subsurface formation of a wellbore and configured to obtain electromagnetic measurements corresponding to a measurement of a subsurface formation property of the wellbore , and wherein the electromagnetic measurements relate to one or more characteristics of materials along a trajectory of the wellbore at a plurality of depths; and a processor configured to: receive the electromagnetic measurements from the electromagnetic logging tool disposed in the subsurface formation; determine a noise threshold based upon a selected transmitter-receiver measurement coupling of the electromagnetic logging tool and the electrical noise of the electromagnetic logging tool ; determine a resistivity ratio based upon the received electromagnetic measurements; model a signal response of the electromagnetic logging tool using the resistivity ratio; plot a first curve representative of the signal response as a function of signal strength and depth of investigation distance and a second curve representative of the noise threshold; and determine a maximum depth of investigation into the subsurface formation as the depth of investigation distance corresponding to where the first and second curves intersect on the plot. receive the electromagnetic measurements from the electromagnetic logging tool disposed in the subsurface formation; determine a noise threshold based upon a selected transmitter-receiver measurement coupling of the electromagnetic logging tool and the electrical noise of the electromagnetic logging tool ; determine a resistivity ratio based upon the received electromagnetic measurements; model a signal response of the electromagnetic logging tool using the resistivity ratio; plot a first curve representative of the signal response as a function of signal strength and depth of investigation distance and a second curve representative of the noise threshold; and determine a maximum depth of investigation into the subsurface formation as the depth of investigation distance corresponding to where the first and second curves intersect on the plot. <EOS>