Patent ID: 11873685
Assignee: NABORS DRILLING TECHNOLOGIES USA, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method for land-based drilling in a wellsite, the wellsite including a row of left well cellars and a row of right well cellars, the method comprising:
supplying a land-based drilling rig comprising:
a drill rig floor;
a subfloor, the subfloor supporting the drill rig floor, the subfloor comprising beams;
a leftmost substructure box and a rightmost substructure box, the substructure boxes supporting the subfloor, each substructure box including a lower substructure box and two upper substructure boxes, wherein there is a gap between the two upper substructure boxes, the leftmost substructure box positioned to the left of a left cellar from the row of left well cellars and the rightmost substructure box positioned to the right of the right cellar of the row of right well cellars, the rows of well cellars perpendicular to the beams; and
a mast, the mast mechanically coupled to the drill rig floor;

traversing the drill rig floor atop the subfloor; and
positioning the mast over the left well cellar or the right well cellar.