Patent ID: 6276453
Filing Date: 2001-08-21
Classification: E21B

Abstract:
An apparatus for disposing an object through the sidewall of a borehole in a compressible substance, comprising:a housing defining a guide channel having a first end and a second end, wherein the second end is positionable adjacent a selected location on the sidewall of the borehole, wherein the guide channel is sized to receive the object;a plurality of unconnected thrust members including a first member nearest the first end of the guide channel and a last member nearest the second end of the guide channel, the plurality of thrust members slidably received in the guide channel in an abutting relationship with the object between the second end and the last member, whereby axial impact on the first member will urge the plurality of thrust members through the guide channel so that the last thrust member impacts the object; anda propulsion assembly comprising a propulsion member adapted to axially impact the first thrust member whereby the object is forceable non-rotatingly through the second end of guide channel, through the sidewall of the borehole and then into the compressible substance.