Side Saddle Substructure

• US 20140224543A1
• Filed: 02/13/2014
• Published: 08/14/2014
• 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: Gupta, Ashish, Padira, Reddy
• Granted Patent: US 9,810,027 B2
• Time in Patent Office: Days
• US Class Current: 175/85
• 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 drilling rig comprising:

a first substructure;

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

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

2. The drilling rig of claim 1, further comprising a mast coupled to the drill floor.

3. The drilling rig of claim 2, the mast including a V-door side and wherein the V-door side of the mast faces the first or second substructure.

4. The drilling rig of claim 1, further comprising a tank support structure affixed to the first or second substructure.

5. The drilling rig of claim 4, further comprising a tank located within the tank support substructure.

6. The drilling rig of claim 5, wherein the tank is a mud tank.

7. The drilling rig of claim 6, wherein the tank support substructure further comprises mud process equipment.

8. The drilling rig of claim 7, wherein the mud process equipment comprises at least one of a shaker or a filter.

9. The drilling rig of claim 1, wherein the drill floor further comprises a V-door, the V-door generally aligned with a side of the drill floor, and the side of the drill floor with which the V-door is aligned facing towards the first or second substructure.

10. The 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 faces towards the first or second substructure.

11. The drilling rig of claim 1, wherein the first and second substructures are adapted to be skidded through a wellsite.

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

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

14. The drilling rig of claim 13, wherein the accumulator comprises a Koomey Unit.

15. A substructure for use in a drilling rig, the substructure comprising:

a substructure frame, the substructure frame configured to at least partially support a drilling floor;

a tank support structure affixed to the substructure.

16. The substructure of claim 15, wherein the tank support structure comprises a tank.

17. The substructure of claim 16, wherein the tank comprises a mud tank.

18. The substructure of claim 16, wherein the tank support substructure further comprises mud process equipment.

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

20. A drilling rig comprising:

a first substructure;

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

a drill floor coupled to the first and second substructures, the drill floor positioned substantially at the top of the first and second substructures, the drill floor including a V-door, the V-door generally aligned with a side of the drill floor, and the side of the drill floor with which the V-door is aligned faces towards the first or second substructure;

a mast coupled to the drill floor;

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

a tank;

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 faces towards the first or second substructure.