Patent ID: 8939236
Filing Date: 2015-01-27
Classification: E21B

Abstract:
1. An expandable apparatus for use in a subterranean borehole, comprising: a tubular body having a drilling fluid flow path extending therethrough; a valve piston disposed within the tubular body, the valve piston configured to move axially downward within the tubular body responsive to a pressure of drilling fluid passing through the drilling fluid flow path, the valve piston defining a nozzle comprising an opening at an end of the valve piston; and a status indicator disposed within the longitudinal bore of the tubular body, the status indicator being fixed relative to the tubular body, the status indicator positioned and configured to restrict a portion of a cross-sectional area of the opening of the nozzle by at least partially entering the nozzle responsive to the valve piston moving axially downward within the tubular body.