Patent Document ID: 9043153
Application ID: 13048833
Patent Status: 1

Claim One:
1. A method to determine a volume of clearance surrounding a wellbore, comprising: placing a logging tool into the wellbore; obtaining a signal response from the logging tool corresponding to a measurement of a subsurface formation property of the wellbore, wherein the measurement of the subsurface formation property relates to one or more characteristics of materials along a trajectory of the wellbore at a plurality of depths; and using a processor configured to: determine the strength of the signal response of the logging tool as a function of radial depth of investigation distance with respect to the axis of the logging tool, wherein the signal response is modeled using the measurement obtained by the logging tool; select a noise threshold based at least partially upon the electrical noise of the logging tool and a frequency at which a signal is transmitted from the logging tool to obtain the measurement; determine a point of intersection between the signal response strength and the noise threshold, wherein the radial depth of investigation distance corresponding to the point of intersection represents a maximum radial depth of investigation; and determine the volume of clearance using the determined maximum radial depth of investigation.