CUTTER FOR USE IN WELL TOOLS

摘要

Position indication in multiplexed downhole well tools. A method of selectively actuating and indicating a position in a well includes selecting at least one well tool from among multiple well tools for actuation by flowing direct current in one direction through a set of conductors in the well, the well tool being deselected for actuation when direct current flows through the set of conductors an opposite direction; and detecting a varying resistance across the set of conductors as the selected well tool is actuated, the variation in resistance providing an indication of a position of a portion of the selected well tool.

主权项

1. A well tool, comprising:
a cutter including at least one cutting layer and a substrate, the cutting layer having a leading face, and wherein the substrate partially overlies the leading face.