Patent ID: 7900696
Filing Date: 2011-03-08
Classification: E21B,Y10T

Abstract:
1. A down hole flow control device for use in a well bore, comprising: a) a central mandrel sized and shaped to fit within a well bore and including a hollow therein, the central mandrel being combustible; b) at least one member disposed on the central mandrel and movable with respect to the central mandrel along a longitudinal axis of the central mandrel, the at least one member including a packer ring compressible along the longitudinal axis of the central mandrel to form a seal between the central mandrel and the well bore; c) at least one back-flow vent hole disposed radially in the central mandrel and extending radially from the hollow of the central mandrel to an exterior of the central mandrel; d) the at least one member covering the at least one back-flow vent hole in an initial, unset configuration of the device, and movable along the longitudinal axis of the mandrel to uncover the at least one back-flow vent hole in a subsequent, set configuration of the device; and a burn device coupled at a bottom of the central mandrel and covering a bottom opening of the hollow in the central mandrel, and including fuel and oxygen.