Side saddle slingshot drilling rig

Patent metadata

Field	Value
Publication number	US-11230855-B2
Application number	US-202016874288-A
Country	US
Kind code	B2
Filing date	May 14, 2020
Priority date	Jun 7, 2016
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A side saddle slingshot drilling rig includes a left and right substructure including a left and right lower box. The side saddle slingshot drilling rig includes a drill rig floor mechanically and pivotably coupled to the left and right lower boxes such that it is pivotably movable from a lowered position to a raised position. The drill rig floor includes a V-door. The V-door is positioned on the V-door side of the drill rig floor. The V-door side of the drill rig floor is oriented to face the right substructure. A mast coupled to the drill rig floor may include an open side, defining a mast V-door side. The mast V-door side may be oriented to face the right substructure. The mast may pivot into its raised position or may be a bootstrap mast.

First claim

The invention claimed is:

1. A drilling rig comprising:
a right substructure and a left substructure, the substructures positioned generally parallel and spaced apart from each other;
the right substructure including a right lower box and a first strut, the first strut pivotably coupled to a drill rig floor and pivotably coupled to the right lower box, the drill rig floor including a V-door, the side of the drill rig floor including the V-door defining the V-door side of the drill rig floor, the V-door oriented to face perpendicular to the right substructure;
the left substructure including 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; and
a mast, the mast including an open side defining a mast V-door side, the open side oriented to face perpendicular to the right substructure, the mast pivotably coupled to the drill rig floor by one or more 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.

2. The drilling rig of claim 1 , wherein the struts form a bar linkage between the lower boxes and the drill rig floor.

3. The drilling rig of claim 2 , wherein the struts are adapted to allow motion of the drill rig floor relative to the lower boxes while maintaining the drill rig floor parallel to the lower boxes.

4. The drilling rig of claim 1 , wherein the V-door side of the drilling rig floor is parallel to the right substructure.

5. The drilling rig of claim 1 , wherein the right and left lower boxes further comprise one or more hydraulic cylinders, the hydraulic cylinders mechanically coupled to one or more corresponding upper mast attachment points of the mast.

6. The drilling rig of claim 5 , wherein the mast includes one or more braces positioned to brace the mast at the mast attachment points of the mast.

7. The drilling rig of claim 6 , further comprising a cylinder sub box, the cylinder sub box including one or more hydraulic cylinders, the hydraulic cylinders mechanically coupled to one or more corresponding upper mast attachment points of the mast.

8. The drilling rig of claim 1 , wherein the mast comprises one or more mast subcomponents, the mast subcomponents mechanically coupled together and to the drill rig floor.

9. The drilling rig of claim 8 , wherein the mast comprises a lower mast subcomponent, the lower mast subcomponent mechanically coupled to the drill rig floor.

10. A method comprising:
providing a drilling rig, the drilling rig including:
a right substructure and a left substructure, the substructures positioned generally parallel and spaced apart from each other;
the right substructure including a right lower box and a first strut, the first strut pivotably coupled to a drill rig floor and pivotably coupled to the right lower box, the drill rig floor including a V-door, the side of the drill rig floor including the V-door defining the V-door side of the drill rig floor, the V-door oriented to face perpendicular to the right substructure;
the left substructure including 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; and

providing a mast, the mast including an open side defining a mast V-door side, the open side oriented to face perpendicular to the right substructure;
mechanically coupling the mast to the drill rig floor; and
raising the mast into a raised position.

11. The method of claim 10 , wherein mechanically coupling the mast to the drill rig floor comprises:
providing a lower mast subcomponent, the lower mast subcomponent including an open side defining a V-door side of the lower mast subcomponent, the V-door side of the lower mast subcomponent oriented to face perpendicular to the right substructure; and
mechanically coupling the lower mast subcomponent to the drill rig floor.

12. The method of claim 11 , wherein raising the mast into the raised position comprises:
providing a mast subcomponent;
positioning the mast subcomponent within the lower mast subcomponent;
hoisting the mast subcomponent; and
mechanically coupling the mast subcomponent to the lower mast subcomponent.

13. The method of claim 12 , further comprising:
positioning a second mast subcomponent within the lower mast subcomponent;
mechanically coupling the second mast subcomponent to the first mast subcomponent; and
hoisting the mast subcomponent.

14. The method of claim 10 further comprising raising the drill rig floor relative to the lower boxes.

15. The method of claim 10 further comprising lowering the drill rig floor relative to the lower boxes.

16. A method comprising:
providing a drilling rig, the drilling rig including:
a right substructure and a left substructure, the substructures positioned generally parallel and spaced apart from each other;
the right substructure including a right lower box and a first strut, the first strut pivotably coupled to a drill rig floor and pivotably coupled to the right lower box, the drill rig floor including a V-door, the side of the drill rig floor including the V-door defining the V-door side of the drill rig floor, the V-door oriented to face perpendicular to the right substructure, wherein the drill rig floor further comprises one or more pivot points;
the left substructure including 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; and

providing a mast, the mast including an open side defining a mast V-door side, the open side oriented to face perpendicular to the right substructure;
mechanically coupling the mast to the drill rig floor by mechanically coupling the mast to the one or more pivot points; and
raising the mast into a raised position.

17. The method of claim 16 , further comprising mechanically coupling one or more hydraulic cylinders to the mast.

18. The method of claim 16 , wherein the mast is mechanically coupled to the pivot points from the V-door side, and the mast is raised in a direction perpendicular to the V-door side of the drill rig floor.

19. The method of claim 18 , wherein the drilling rig further comprises a cylinder sub box, the cylinder sub box mechanically coupled to the right lower box, the cylinder sub box including the one or more hydraulic cylinders.

20. The method of claim 16 , wherein the mast is mechanically coupled to the pivot points from a side of the drill rig floor opposite the V-door side, and the mast is raised in a direction perpendicular to the V-door side of the drill rig floor.

21. The method of claim 20 , wherein the drilling rig further comprises a cylinder sub box, the cylinder sub box mechanically coupled to the left lower box, the cylinder sub box including the one or more hydraulic cylinders.

22. The method of claim 16 , wherein the mast is mechanically coupled to the pivot points and raised in a direction parallel to the V-door side of the drill rig floor.

23. The method of claim 22 , wherein one or more hydraulic cylinders are positioned within the right and left lower boxes.

Assignees

• Nabors Drilling Tech Usa Inc

Inventors

• Reddy Padira
• Gupta Ashish

Classifications

• E21B15/003 Primary

  adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells · CPC title

• B66F3/28

  telescopic · CPC title

• E04H12/345 Primary

  Arrangements for tilting up whole structures or sections thereof (E04H12/347 takes precedence) · CPC title

• E21B7/02 Primary

  Drilling rigs characterised by means for land transport {with their own drive}, e.g. skid mounting or wheel mounting · CPC title

• B66F7/0633 Primary

  Mechanical arrangements not covered by the following subgroups · CPC title