WEAR SENSOR AND METHOD OF DETERMINING WEAR OF A DOWNHOLE TOOL

摘要

A wear sensor comprising a base and a plurality of conductive layers stacked on the base, the plurality of conductive layers defining a wear surface. The waer sensor further comprising a plurality of vias extending through the plurality of conductive layers and to the base, wherein the plurality of vias is electrically connected to electronics to generate a signal through the plurality of vias whereby, upon wear of each of the plurality of conductive layers, a change in the signal of a corresponding via of the plurality of vias at a depth of the wear is detectable. Further disclosed is a method of using that wear sensor in a downhole tool.