Side saddle substructure

• US 9,810,027 B2
• Filed: 02/13/2014
• Issued: 11/07/2017
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: Nabors Drillling Technologies USA, Inc.
• Original Assignee: Nabors Drilling USA LP (Nabors Industries Limited)
• Inventors: Reddy, Padira, Gupta, Ashish
• Primary Examiner(s): Thompson, Kenneth L
• Application Number:
  US14/180,049
• Publication Number:
  US 20140224543A1
• Time in Patent Office: 1,363 Days
• Field of Search: 175162, 175203, 175206, 175207
• CPC Class Codes: E21B 15/003 adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
• CPC Class Codes: E21B 21/065 Separating solids from drilling fluids
• CPC Class Codes: E21B 21/106 Valve arrangements outside the borehole, e.g. kelly valves valves specifically for maintaining circulation of drilling fluid while connecting or disconnecting tubular joints E21B21/019
• CPC Class Codes: E21B 33/06 Blow-out preventers , i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers rotating blow-out preventers E21B33/085
• CPC Class Codes: E21B 7/02 Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting

Abstract

The drilling rig includes a first substructure and a second substructure. The second substructure is positioned generally parallel to and spaced apart from the first substructure and generally the same height as the first substructure. The drilling rig further includes a drill floor coupled to the first and second substructures, where the drill floor positioned substantially at the top of the first and second substructures.

Claims

1. A land based drilling rig comprising:

a first elongated substructure;

a second elongated substructure, the second elongated substructure being positioned generally parallel to and spaced apart from the first elongated sub structure;

a drill floor fixedly coupled to the first and second elongated substructures, the drill floor positioned substantially at the top of the first and second elongated sub structures; and

a mast coupled to the first or second elongated substructure, wherein the mast further comprises a V-door side and wherein the V-door side of the mast is perpendicular to a long axis of the first elongated substructure.

2. The land based drilling rig of claim 1, further comprising a grasshopper positioned to carry cabling and lines to the drilling rig, the grasshopper positioned to couple to the drill floor generally at a side of the drill floor, and the side of the drill floor to which the grasshopper couples is perpendicular to the first or second elongated substructure.

3. The land based drilling rig of claim 1, further comprising a choke manifold, the choke manifold positioned on the drill floor.

4. The land based drilling rig of claim 1, further comprising an accumulator, the accumulator positioned on the drill floor.

5. The land based drilling rig of claim 1, wherein the second elongated substructure is generally the same height as the first sub structure.

6. The land based drilling ring of claim 1, wherein the mast is coupled to the drill floor.

7. The land based drilling rig of claim 1, wherein the land based drilling rig is a box-on-box rig.

8. The land based drilling rig of claim 1, wherein the land based drilling rig includes only two elongated substructures.

9. The land based drilling rig of claim 1, wherein the drill floor further comprises a V-door, the V-door generally aligned with a V-door side of the drill floor, the V-door side of the drill floor is aligned perpendicular to a long axis of the first elongated substructure.

10. The land based drilling rig of claim 9 further comprising a tank support structure, the tank support structure coupled to the second elongated sub structure.

11. The land based drilling rig of claim 10 further comprising a tank, the tank positioned within the second elongated substructure.

12. The land based drilling rig of claim 1, wherein the first and second substructures are adapted to be traveling through a wellsite.

13. The land based drilling rig of claim 12, wherein a catwalk coupled to a first elongated substructure or second elongated substructure is adapted to travel with the land based drilling rig.

14. The land based drilling rig of claim 12, wherein the first elongated substructure and second elongated substructure are adapted to be traveled through a wellsite and wherein a tank is adapted to travel with the land based drilling rig.

15. The land based drilling rig of claim 1, further comprising a tank support substructure coupled to the first or second elongated sub structure.

16. The land based drilling rig of claim 15, further comprising a tank, wherein the tank is positioned within the tank support substructure.

17. The land based drilling rig of claim 16, wherein the tank is a mud tank.

18. The land based drilling rig of claim 15, further comprising mud process equipment, wherein the mud process equipment is positioned within the tank support substructure.

19. The land based drilling rig of claim 18, wherein the mud process equipment comprises at least one of a shaker or a filter.

20. A land based drilling rig comprising:

a first elongated substructure;

a second elongated substructure, the second elongated substructure being positioned generally parallel to and spaced apart from the first elongated substructure and being generally the same height as the first elongated substructure;

a drill floor coupled to the first and second elongated substructures, the drill floor positioned substantially at the top of the first and second elongated substructures, the drill floor including a V-door, the V-door generally aligned with a V-door side of the drill floor, and the V-door side of the drill floor is perpendicular to a long axis of the first or second elongated sub structure;

a mast coupled to the drill floor;

a tank support structure affixed to the first or second elongated substructure, the tank support structure including;

a tank; and

mud process equipment; and

a grasshopper positioned to carry cabling and lines to the drilling rig, the grasshopper positioned to couple to the drill floor generally at a side of the drill floor, and the side of the drill floor to which the grasshopper couples is perpendicular to the first or second elongated substructure.

21. A land based drilling rig comprising:

a first elongated substructure;

a second elongated substructure, the second elongated substructure being positioned generally parallel to and spaced apart from the first elongated substructure;

a drill floor fixedly coupled to the first and second elongated substructures, the drill floor positioned substantially at the top of the first and second elongated substructures;

a tank support structure coupled to the elongated substructure; and

a tank, the tank positioned within the tank support structure;

wherein the drill floor further comprises a V-door, the V-door generally aligned with a V-door side of the drill floor, the V-door side of the drill floor is aligned perpendicular to a long axis of the first elongated substructure.

22. The land based drilling rig of claim 21 further comprising mud process equipment, wherein the mud process equipment is positioned within the tank support substructure.