US 12,312,869 B2
Two-part drilling and running tool
Borisa Lajesic, Stavanger (NO)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 19, 2022, as Appl. No. 18/083,826.
Claims priority of provisional application 63/311,493, filed on Feb. 18, 2022.
Prior Publication US 2023/0265719 A1, Aug. 24, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 10/64 (2006.01); E21B 7/06 (2006.01); E21B 10/60 (2006.01); E21B 10/62 (2006.01); E21B 41/00 (2006.01)
CPC E21B 10/64 (2013.01) [E21B 7/061 (2013.01); E21B 10/602 (2013.01); E21B 10/62 (2013.01); E21B 41/0035 (2013.01)] 33 Claims
OG exemplary drawing
 
24. A method for forming a well system, comprising:
forming a main wellbore within a subterranean formation; and
positioning a two part drilling and running tool within the main wellbore, the two part drilling and running tool coupled to a whipstock assembly using a coupling mechanism, the two part drilling and running tool including:
a conveyance;
a smaller assembly coupled to an end of the conveyance, wherein the smaller assembly is a smaller bit assembly including one or more blades and one or more cutting features along a nose thereof; and
a larger bit assembly slidably coupled to the conveyance, the smaller assembly and larger bit assembly configured to slidingly engage one another downhole to form a combined bit assembly.