# US 11,111,734 B2 · Side-saddle cantilever mast > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,734 B2 - Document ID: US11111734B2 - Status: Granted - Kind: B2 - Application number: 16/884,239 - Filed: 2020-05-27 - Published: 2020-09-10 - Granted: 2021-09-07 - Earliest claimed: 2016-11-07 - Assignees: Nabors Drilling Technologies USA, Inc. - Applicants: Nabors Drilling Technologies USA, Inc. - Inventors: Ashish Gupta; Ryan Hause; Padira Reddy - Web page: https://patentgrep.com/patent/US11111734B2 ## CPC - E21B 15/00: Supports for the drilling machine, e.g. derricks or masts - E04H 12/345: {Arrangements for tilting up whole structures or sections thereof (E04H12/347 takes precedence)} - E21B 19/084: with flexible drawing means, e.g. cables - E04H 12/34: Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like - E04H 12/344: {Arrangements for lifting tower sections for placing additional sections under them} - E21B 15/006: {Means for anchoring the drilling machine to the ground} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) ## Abstract A side saddle slingshot drilling rig includes a right substructure and a left substructure, the substructures positioned generally parallel and spaced apart from each other. The right substructure includes a right lower box and a first strut, the first strut pivotably coupled to the drill rig floor and pivotably coupled to the right lower box. The left substructure includes a left lower box and a second strut, the second strut pivotably coupled to the drill rig floor and pivotably coupled to the left lower box. The side saddle slingshot drilling rig also includes a drill rig floor, the drill rig floor including a V-door. The side of the drill rig floor has the V-door defining the V-door side of the drill rig floor, the V-door side of the drill rig floor parallel to the right substructure. The side saddle slingshot drilling rig further includes a mast, the mast including an open side defining a mast V-door side. The open side is oriented to face perpendicular to the right substructure. The mast is pivotably coupled to the drill rig floor by one or more mast pivot points and one or more lower mast attachment points, the mast being pivotable in a direction parallel to the V-door side of the drill rig floor or the mast being pivotable in a direction perpendicular to V-door side of the drill rig floor. The mast includes two or more subunits, wherein the two or more subunits are pinned together. ## Claims ### Claim 1 A method of transporting a mast comprising: transporting a lower mast subunit, the lower mast subunit including a lower mast section, a top drive positioned within the lower mast section, the lower mast section having a V-door side, the lower mast-subunit transported such that the V-door side of the lower mast section is perpendicular to the ground; transporting a middle mast subunit, the middle mast subunit including a middle mast section, the middle mast section having a V-door side, the middle mast subunit transported such that the V-door side of the middle mast section is perpendicular to the ground; and transporting an upper mast subunit, the upper mast subunit including an upper mast section, a travelling block positioned within the upper mast section, the upper mast section having a V-door side, the upper mast subunit transported such that the V-door side of the upper mast section is perpendicular to the ground. ### Claim 2 (depends on 1) The method of claim 1, wherein the lower mast subunit includes a lower mast subunit bogie, the lower mast subunit bogie mechanically connected to the lower mast section. ### Claim 3 (depends on 2) The method of claim 2, wherein the lower mast subunit includes a lower mast subunit gooseneck, the lower mast subunit gooseneck mechanically connected to the lower mast section. ### Claim 4 (depends on 3) The method of claim 3, wherein the lower mast subunit gooseneck is adapted to mechanically connect with a tractor and step of transporting the lower mast subunit is performed by a tractor. ### Claim 5 (depends on 3) The method of claim 3, wherein the lower mast section has a front, wherein a center of the top drive is along the front of the lower mast section. ### Claim 6 (depends on 1) The method of claim 1, wherein the middle mast subunit includes a middle mast subunit bogie, the middle mast subunit bogie mechanically connected to the middle mast section. ### Claim 7 (depends on 6) The method of claim 6, wherein the middle mast subunit includes a middle mast subunit gooseneck, the middle mast subunit gooseneck mechanically connected to the middle mast section. ### Claim 8 (depends on 7) The method of claim 7, wherein the middle mast subunit gooseneck is adapted to mechanically connect with a tractor and step of transporting the middle mast subunit is performed by a tractor. ### Claim 9 (depends on 7) The method of claim 7, wherein the middle mast section is transported with a racking board, the racking board in a folded configuration. ### Claim 10 (depends on 1) The method of claim 1, wherein the upper mast subunit includes a upper mast subunit bogie, the upper mast subunit bogie mechanically connected to the upper mast section. ### Claim 11 (depends on 10) The method of claim 10, wherein the upper mast subunit includes a upper mast subunit kingpin, the upper mast subunit kingpin mechanically connected to the upper mast section. ### Claim 12 (depends on 11) The method of claim 11, wherein the upper mast subunit kingpin is adapted to mechanically connect with a tractor and step of transporting the upper mast subunit is performed by a tractor. ### Claim 13 (depends on 1) The method of claim 1 further comprising transporting a drill line spooler, the drill line spooler positioned on a spooler bogie. ### Claim 14 (depends on 13) The method of claim 13, wherein the spooler bogie is mechanically connected to the upper mast subunit. ### Claim 15 (depends on 1) The method of claim 1, wherein a crown assembly is positioned atop the upper mast section. ### Claim 16 (depends on 15) The method of claim 15, wherein the crown assembly is connected to a travelling block via a drill line, the travelling block positioned within the upper mast section.