US 11,933,118 B2
High-capacity mast on a drilling rig
Padira Reddy, Richmond, TX (US); and Ashish Gupta, Houston, TX (US)
Assigned to Nabors Drilling Technologies USA, Inc., Houston, TX (US)
Filed by Nabors Drilling Technologies USA, Inc., Houston, TX (US)
Filed on Jul. 15, 2022, as Appl. No. 17/866,138.
Application 17/866,138 is a division of application No. 16/107,606, filed on Aug. 21, 2018, granted, now 11,401,756.
Claims priority of provisional application 62/550,090, filed on Aug. 25, 2017.
Prior Publication US 2022/0349268 A1, Nov. 3, 2022
Int. Cl. E21B 19/15 (2006.01); E04H 12/34 (2006.01); E21B 3/04 (2006.01); E21B 7/02 (2006.01); E21B 15/00 (2006.01); E21B 19/16 (2006.01)
CPC E21B 19/155 (2013.01) [E04H 12/345 (2013.01); E21B 3/045 (2013.01); E21B 7/021 (2013.01); E21B 15/00 (2013.01); E21B 15/003 (2013.01); E21B 19/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of building and using a land-based drilling rig, comprising:
placing a platform collapsed over a substructure over a proposed well drilling location, the platform having a rig floor;
building a high-capacity mast by attaching a mast bottom section to the platform at a pivot joint, attaching a mast lower intermediate section to the mast bottom section, attaching a mast upper intermediate section to the mast lower intermediate section, attaching a mast top section to the mast upper intermediate section, and attaching a first racking board to the upper intermediate section, the racking board being disposed 100 to 200 feet from a bottom of the mast bottom section, and wherein the mast bottom section, lower intermediate section, upper intermediate section, and top section together have an opening in a side thereof sized in a range of 145 to 250 feet;
raising the high-capacity mast from a horizontal condition to a vertical condition by pivoting the high-capacity mast about a pivot point on the platform; and
raising the platform from a collapsed condition to a raised condition over the substructure and securing the platform in the raised condition.