Side saddle substructure

• US 10,094,176 B2
• Filed: 06/23/2016
• Issued: 10/09/2018
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: Nabors Drillling Technologies USA, Inc.
• Original Assignee: Nabors Drillling Technologies USA, Inc.
• Inventors: Reddy, Padira, Gupta, Ashish
• Primary Examiner(s): Thompson, Kenneth L
• Application Number:
  US15/191,094
• Publication Number:
  US 20160369570A1
• Time in Patent Office: 838 Days
• 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, box-on-box 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 sub structure;

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

a mast, the mast coupled to the drill rig floor;

wherein the box-on-box, land based drilling rig is adapted to be travelled in an assembled state through a wellsite.

2. The drilling rig of claim 1, wherein the mast further comprises a V-door side and wherein the V-door side of the mast faces the first or second elongated sub structure.

3. The drilling rig of claim 1, further comprising a blowout preventer, the blowout preventer located between the first and second elongated substructures.

4. The drilling rig of claim 1, wherein the drilling rig is centered over a wellbore.

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

6. The drilling rig of claim 1, further comprising a tank support substructure coupled to the first or second elongated substructure.

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

8. The drilling rig of claim 7, wherein the tank is a mud tank.

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

10. The drilling rig of claim 9, wherein the mud process equipment comprises at least one of a shaker or a filter.

11. The drilling rig of claim 6, wherein the tank support structure remains coupled to the first or second elongated substructure when the first and second elongated substructures are traveled.

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

13. The drilling rig of claim 12, further comprising a pipe handler, the pipe handler positioned to carry piping through the V-door.

14. The drilling rig of claim 12, further comprising a tank support structure, the tank support structure coupled to the second elongated substructure and wherein the V-door side is aligned facing towards the first elongated substructure.

15. The drilling rig of claim 1, further comprising a choke manifold.

16. The drilling rig of claim 15, wherein the choke manifold is positioned on the drill rig floor.

17. The drilling rig of claim 15, wherein the choke manifold is coupled to one of the first or second elongated substructures.

18. The drilling rig of claim 17, wherein the choke manifold remains coupled to the first or second elongated substructure when the first and second elongated substructures are traveled.

19. The drilling rig of claim 1, further comprising an accumulator.

20. The drilling rig of claim 19, wherein the accumulator is positioned on the drill rig floor.

21. The drilling rig of claim 19, wherein the accumulator is coupled to one of the first or second elongated substructures.

22. The drilling rig of claim 20, wherein the accumulator remains coupled to the first or second elongated substructure when the first and second substructures are traveled.

23. A substructure for use in a land-based, box-on-box drilling rig, the substructure comprising:

a substructure frame, the substructure frame configured to at least partially support a drill rig floor, the drill rig floor fixedly coupled to the substructure frame; and

a tank support structure coupled to the substructure, wherein the tank support structure further comprises a tank;

wherein the box-on-box land based drilling rig is adapted to be travelled in an assembled state through a wellsite.

24. The substructure of claim 23, wherein the tank comprises a mud tank.

25. The substructure of claim 23, wherein the tank support substructure further comprises mud process equipment.

26. The substructure of claim 25, wherein the mud process equipment comprises at least one of a shaker or a filter.

27. The substructure of claim 23, further comprising a choke manifold coupled to the substructure.

28. The substructure of claim 23, further comprising an accumulator coupled to the substructure.

29. A box-on-box, land-based 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 rig floor fixedly coupled to the first and second substructures, the drill rig floor positioned substantially at the top of the first and second substructures, the drill rig floor including a V-door, the V-door generally aligned with a side of the drill rig floor, and the side of the drill rig floor with which the V-door is aligned faces towards the first or second substructure;

a mast coupled to the drill rig floor;

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

a tank; and

mud process equipment;

wherein the box-on-box, land based drilling rig is adapted to be travelled in an assembled state through a wellsite.