US 12,345,112 B2
Radial cutting apparatus for cutting a downhole conduit
Michael C. Robertson, Mansfield, TX (US)
Assigned to Robertson Intellectual Properties, LLC, Mansfield, TX (US)
Filed by Robertson Intellectual Properties, LLC, Mansfield, TX (US)
Filed on Jan. 26, 2024, as Appl. No. 18/424,110.
Application 18/424,110 is a continuation of application No. 17/840,356, filed on Jun. 14, 2022, granted, now 11,885,189.
Claims priority of provisional application 63/210,834, filed on Jun. 15, 2021.
Prior Publication US 2024/0167356 A1, May 23, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 29/02 (2006.01); E21B 31/16 (2006.01)
CPC E21B 29/02 (2013.01) [E21B 31/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for cutting or severing a conduit, comprising:
a body configured to be inserted into the conduit;
a fuel disposed within the body; and
a nozzle head disposed within the body and comprising a plurality of apertures configured to provide a passage to outside of the nozzle head; wherein:
upon ignition of the fuel, the fuel generates a flame and hot combustion products that produce pressure causing the nozzle head and the plurality of apertures to move downward with respect to the body thereby permitting the flame and hot combustion products to pass through and out of the plurality of apertures to cut or sever the conduit.