US 12,065,892 B2
Drilling rig with a top drive system operable in a drilling mode and a tripping mode
Arthur Alexander De Mul, Schiedam (NL); and Joop Roodenburg, Schiedam (NL)
Assigned to ITREC B.V., Schiedam (NL)
Filed by ITREC B.V., Schiedam (NL)
Filed on Nov. 2, 2022, as Appl. No. 17/979,223.
Application 17/979,223 is a division of application No. 15/737,068, granted, now 11,512,532, previously published as PCT/NL2016/050415, filed on Jun. 9, 2016.
Claims priority of application No. 2014988 (NL), filed on Jun. 18, 2015.
Prior Publication US 2023/0048765 A1, Feb. 16, 2023
Int. Cl. E21B 19/14 (2006.01); E21B 3/02 (2006.01); E21B 7/02 (2006.01); E21B 19/00 (2006.01); E21B 19/06 (2006.01); E21B 19/16 (2006.01)
CPC E21B 19/14 (2013.01) [E21B 3/022 (2020.05); E21B 7/02 (2013.01); E21B 19/00 (2013.01); E21B 19/06 (2013.01); E21B 19/16 (2013.01)] 10 Claims
OG exemplary drawing
 
6. A drilling mast for a drilling rig having a drill floor with a well center, wherein the drilling mast has a U-shaped horizontal cross section with a left-hand mast wall, a rear mast wall, and a right-hand mast wall, and with an open front side,
wherein a left-hand fingerboard device is mounted to the left-hand mast wall and a right-hand fingerboard device is mounted to the right-hand mast wall, such that the mast is placed in between the left-hand fingerboard device and the right-hand fingerboard device, wherein each fingerboard devices has fingers defining slots that extend parallel to the respective mast wall and are open at a front side of each of the left-hand fingerboard device and the right-hand fingerboard device,
wherein the open front side of each of the left-hand fingerboard device and the right-hand fingerboard device is facing the same direction as the open front side of the drilling mast.