| CPC E21B 10/62 (2013.01) [E21B 7/061 (2013.01); E21B 10/322 (2013.01); E21B 10/44 (2013.01); E21B 23/01 (2013.01)] | 29 Claims |
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21. A method for forming a well system, comprising:
forming a main wellbore within a subterranean formation;
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 whipstock assembly having a hydraulically actuated anchoring assembly coupled to a downhole end thereof, the two part drilling and running tool including:
a conveyance;
a smaller assembly coupled to an end of the conveyance; 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;
applying fluid pressure to the hydraulically actuated anchoring assembly to set the hydraulically actuated anchoring assembly in the main wellbore; and
applying force to the smaller bit assembly to shear the coupling mechanism after applying the fluid pressure, and then sliding the smaller bit assembly relative to the larger bit assembly to form a combined bit assembly.
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