US 12,291,967 B1
Method for forming underground flowlines with electronic tracking
Ted R. Dimitroff, Columbia, MO (US)
Filed by Ted R. Dimitroff, Columbia, MO (US)
Filed on Dec. 15, 2023, as Appl. No. 18/541,898.
Int. Cl. E21B 7/28 (2006.01); E21B 7/04 (2006.01); E21B 47/09 (2012.01)
CPC E21B 7/28 (2013.01) [E21B 7/046 (2013.01); E21B 47/09 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of drilling a flow line below ground surface, comprising:
making series of substantially vertical sight relief holes;
then drilling a pilot hole in a first direction to each sight relief hole using a boring tool of a directional boring machine;
supporting the boring tool at selected ones of the sight relief holes with support hooks extending downwardly in the sight relief holes;
then reaming the pilot hole to a larger diameter using a reamer head pulled in a second direction opposite the first direction;
sensing the location of the reamer head during reaming;
stopping the reaming before the reamer head reaches each one of the support hooks, and then removing each one of the support hooks from the boring tool before reaming continues, and
reinstalling each one of the support hooks to the boring tool after the reamer head passes the sight relief hole.