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|1. (WO2018013258) MAST AND SUBSTRUCTURE|
|Applicants:||NABORS DRILLING TECHNOLOGIES USA, INC.
|Title:||MAST AND SUBSTRUCTURE|
A drilling rig may include a right substructure, left substructure, and a drill floor. The drill floor may be pivotably coupled to lower boxes of the left and right substructure by struts. The substructures may include hydraulic cylinders positioned to raise the drill floor and a mast coupled to the drill floor into a raised position.