A wellbore evaluation system evaluates mechanical wear and corrosion to components of a well system including a production tubing string positionable in a well and a sucker rod string movable within the production tubing string. In one method, a first test on a pipeline is performed at a first pressure, which obtains a first set of test data. The method comprises detecting an occurrence associated with an authentication device. While a portion of data corresponding to the data transfer requests fill the pre-fetch buffers, the fill level of each buffer is monitored to determine if it meets or exceeds its buffer fill watermark.