Bi-directionally raisable drilling rig mast

• US 8,904,716 B2
• Filed: 04/23/2013
• Issued: 12/09/2014
• Est. Priority Date: 04/24/2012
• Status: Active Grant

• Current Assignee: National Oilwell Varco LP (NOV, Inc.)
• Original Assignee: National Oilwell Varco LP (NOV, Inc.)
• Inventors: Donnally, Robert Benjamin, Ren, Chunqiao, Liu, Xilin
• Primary Examiner(s): WENDELL, MARK R
• Application Number:
  US13/868,696
• Publication Number:
  US 20130291452A1
• Time in Patent Office: 595 Days
• Field of Search: 521/231, 521/11, 521/17, 521/18, 521/20, 527/451.8, 527/451.7, 521/14, 521/16, 254/5.C, 254/250, 254/258, 254/261
• US Class Current: 52/117
• CPC Class Codes: E21B 15/00 Supports for the drilling machine, e.g. derricks or masts
• CPC Class Codes: E21B 7/00 Special methods or apparatus for drilling
• 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

Disclosed herein is a bi-directionally raisable drilling rig mast system that includes a drilling rig mast having a bi-directional mast erection connection, a first erection connection positioned proximate a first side of a rig substructure, and a second erection connection positioned proximate a second side of the rig substructure, the second side being at an opposite side of the rig substructure from the first side. The system further includes at least one mast erection apparatus having an upper end that is adapted to be pivotably attached to the bi-directional mast erection connection and a lower end that is adapted to be pivotably attached to the first erection connection for erecting the drilling rig mast from the first side of the substructure, the lower end being further adapted to be pivotably attached to the second erection connection for erecting the drilling rig mast from the second side of the substructure.

Claims

1. A bi-directional drilling rig mast connection system, comprising:

a first mast section having first and second spaced-apart sides and comprising a first bi-directional connection apparatus positioned at an upper end thereof; and

a second mast section having first and second spaced-apart sides and comprising a second bi-directional connection apparatus positioned at a lower end thereof, wherein said second bi-directional connection apparatus is adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective first sides of said first and second mast sections are oriented in a substantially upward direction, said second bi-directional connection apparatus being further adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective second sides of said first and second mast sections are oriented in said substantially upward direction.

2. The bi-directional drilling rig mast connection system of claim 1, wherein said first bi-directional connection apparatus comprises a plurality of bi-directional hooks and said second bi-directional connection apparatus comprises a plurality of bi-directional hook engagement connections, each of said bi-directional hooks being adapted to hookingly engage a pin member positioned in a pin hole of a respective one of said plurality of bi-directional hook engagement connections when said second mast section is removably attached to said first mast section.

3. The bi-directional drilling rig mast connection system of claim 1, wherein said first bi-directional connection apparatus comprises a plurality of first bi-directional hooks fixedly attached to said first side of said first mast section and a plurality of second bi-directional hooks fixedly attached to said second side of said first mast section.

4. The bi-directional drilling rig mast connection system of claim 3, wherein each of said plurality of first bi-directional hooks has a first open throat area that is oriented in a first direction and wherein each of said plurality of second bi-directional hooks has a second open throat area that is oriented in a second direction that is substantially opposite to said first direction.

5. The bi-directional drilling rig mast connection system of claim 4, wherein said first direction is oriented substantially away from said first side of said first mast section and said second direction is oriented substantially away from said second side of said first mast section.

6. The bi-directional drilling rig mast connection system of claim 3, wherein said second bi-directional connection apparatus comprises a plurality of first bi-directional hook engagement connections fixedly attached to said first side of said second mast section and a plurality of second bi-directional hook engagement connections fixedly attached to said second side of said second mast section.

7. The bi-directional drilling rig mast connection system of claim 6, further comprising a plurality of pin members, wherein each of said plurality of first bi-directional hook engagement connections comprises a first pin hole and each of said second bi-directional hook engagement connections comprises a second pin hole, each of said first and second pin holes being adapted to receive a respective one of said plurality of pin members.

8. The bi-directional drilling rig mast connection system of claim 7, wherein each of said plurality of pin members is adapted to hookingly engage a hook engagement surface on a respective one of said pluralities of first and second bi-directional hooks when said second mast section is removably attached to said first mast section.

9. The bi-directional drilling rig mast connection system of claim 8, wherein, when said second mast section is removably attached to said first mast section with said respective first sides of said first and second mast sections oriented in a substantially upward direction, one of said plurality of pin members is adapted to be inserted into a respective first pin hole of each of said plurality of first bi-directional hook engagement connections prior to hookingly engaging said hook engagement surface on a corresponding one of said plurality of first bi-directional hooks and wherein one of said plurality of pin members is adapted to be inserted into a respective second pin hole of each of said plurality of second bi-directional hook engagement connections after said respective second pin hole is substantially aligned with said hook engagement surface on a corresponding one of said plurality of second bi-directional hooks.

10. The bi-directional drilling rig mast connection system of claim 8, wherein, when said second mast section is removably attached to said first mast section with said respective second sides of said first and second mast sections oriented in a substantially upward direction, one of said plurality of pin members is adapted to be inserted into a respective second pin hole of each of said plurality of second bi-directional hook engagement connections prior to hookingly engaging said hook engagement surface on a corresponding one of said plurality of second bi-directional hooks and wherein one of said plurality of pin members is adapted to be inserted into a respective first pin hole of each of said plurality of first bi-directional hook engagement connections after said respective first pin hole is substantially aligned with said hook engagement surface on a corresponding one of said plurality of first bi-directional hooks.

11. The bi-directional drilling rig mast connection system of claim 6, further comprising a plurality of mast connection spacers that are adapted to be positioned between said first mast section and an end of each one of said pluralities of first and second bi-directional hook engagement connections so as to lock said connection between said first and second mast sections.

12. The bi-directional drilling rig mast connection system of claim 1, wherein said first mast section further comprises a bi-directional mast erection connection.

13. The bi-directional drilling rig mast connection system of claim 12, wherein said bi-directional mast erection connection is adapted to be pivotably attached to an upper end of at least one mast erection apparatus, said at least one mast erection apparatus having a lower end that is adapted to be pivotably attached to a first erection connection positioned proximate a first side of a drilling rig substructure for erecting said first and second mast sections from said first side, said lower end of said at least one mast erection apparatus being further adapted to be pivotably attached to a second erection connection positioned proximate a second side of said drilling rig substructure that is opposite of said first side for erecting said first and second mast sections from said second side.

14. The bi-directional drilling rig mast connection system of claim 13, wherein said first erection connection is attached to a lower substructure box of said drilling rig substructure proximate a first end of said lower substructure box, said first end corresponding to said first side of said drilling rig substructure.

15. The bi-directional drilling rig mast connection system of claim 14, wherein said second erection connection is on an extension skid that is removably attached to a second end of said lower substructure box, said second end corresponding to said second side of said drilling rig substructure.

16. The bi-directional drilling rig mast connection system of claim 12, wherein said first side of said rig substructure corresponds to a setback side of a drilling rig and said second side of said rig substructure corresponds to a drawworks side of said drilling rig.

17. The bi-directional drilling rig mast connection system of claim 1, wherein said first mast section further comprises a plurality of rear support legs, each of said plurality of rear support legs comprising a pinned connection at a lower end thereof, each of said pinned connections being adapted to be pivotably attached to a respective mast support shoe positioned on an upper substructure box of a drilling rig substructure.

18. A bi-directional drilling rig mast connection system, comprising:

a first mast section comprising a first bi-directional connection apparatus positioned at an upper end thereof, wherein said first bi-directional connection apparatus comprises a plurality of bi-directional hooks; and

a second mast section that is adapted to be removably attached to said first mast section, said second mast section comprising a second bi-directional connection apparatus positioned at a lower end thereof, wherein said second bi-directional connection apparatus comprises a plurality of bi-directional hook engagement connections, each of said bi-directional hooks being adapted to hookingly engage a pin member positioned in a pin hole of a respective one of said plurality of bi-directional hook engagement connections when said second mast section is removably attached to said first mast section.

19. The bi-directional drilling rig mast connection system of claim 18, wherein each of said first and second mast sections have a mast setback side, said second bi-directional connection apparatus being adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective mast setback sides of said first and second mast sections are oriented in a substantially upward direction.

20. The bi-directional drilling rig mast connection system of claim 18, wherein each of said first and second mast sections have a drawworks side, said second bi-directional connection apparatus being adapted to engage said first bi-directional connection apparatus so as to removably attach said second mast section to said first mast section when said first and second mast sections are in a substantially horizontal orientation and said respective drawworks sides of said first and second mast sections are oriented in a substantially upward direction.

21. The bi-directional drilling rig mast connection system of claim 18, wherein said first mast section further comprises a bi-directional mast erection connection, said bi-directional mast erection connection being adapted to be pivotably attached to an upper end of at least one mast erection apparatus, wherein said at least one mast erection apparatus has a lower end that is adapted to be pivotably attached to a first erection connection positioned proximate a setback side of a drilling rig substructure for erecting said first and second mast sections from said setback side, said lower end of said at least one mast erection apparatus being further adapted to be pivotably attached to a second erection connection positioned proximate a drawworks side of said drilling rig substructure that is opposite of said first side for erecting said first and second mast sections from said drawworks side.

22. The bi-directional drilling rig mast connection system of claim 21, wherein said first erection connection is attached to a lower substructure box of said drilling rig substructure proximate a first end of said lower substructure box, said first end corresponding to said setback side of said drilling rig substructure.

23. The bi-directional drilling rig mast connection system of claim 22, wherein said second erection connection is on an extension skid that is removably attached to a second end of said lower substructure box, said second end corresponding to said drawworks side of said drilling rig substructure.

24. A bi-directional drilling rig mast connection system, comprising:

a first mast section comprising a plurality of first bi-directional hooks fixedly attached to a setback side at an upper end of said first mast section and a plurality of second bi-directional hooks fixedly attached to a drawworks side at said upper end of said first mast section;

a second mast section that is adapted to be removably attached to said first mast section, said second mast section comprising a plurality of first bi-directional hook engagement connections fixedly attached to a setback side at a lower end of said second mast section and a plurality of second bi-directional hook engagement connections fixedly attached to a drawworks side at said lower end of said second mast section.

25. The bi-directional drilling rig mast connection system of claim 24, wherein each of said plurality of first bi-directional hooks has a first open throat area that is oriented substantially away from said setback side of said first mast section and wherein each of said plurality of second bi-directional hooks has a second open throat area that is oriented substantially away from said drawworks side of said first mast section.

26. The bi-directional drilling rig mast connection system of claim 25, further comprising a plurality of pin members, wherein each of said plurality of first bi-directional hook engagement connections comprises a first pin hole and each of said second bi-directional hook engagement connections comprises a second pin hole, each of said first and second pin holes being adapted to receive a respective one of said plurality of pin members.

27. The bi-directional drilling rig mast connection system of claim 26, wherein each of said plurality of pin members is adapted to hookingly engage a hook engagement surface on a respective one of said pluralities of first and second bi-directional hooks when said second mast section is removably attached to said first mast section.

28. The bi-directional drilling rig mast connection system of claim 24, wherein said first mast section further comprises a bi-directional mast erection connection, said bi-directional mast erection connection being adapted to be pivotably attached to an upper end of at least one mast erection apparatus, wherein said at least one mast erection apparatus has a lower end that is adapted to be pivotably attached to a first erection connection positioned proximate a setback side of a drilling rig substructure for erecting said first and second mast sections from said setback side, said lower end of said at least one mast erection apparatus being further adapted to be pivotably attached to a second erection connection positioned proximate a drawworks side of said drilling rig substructure that is opposite of said first side for erecting said first and second mast sections from said drawworks side.

29. The bi-directional drilling rig mast connection system of claim 28, wherein said first erection connection is attached to a lower substructure box of said drilling rig substructure proximate a first end of said lower substructure box, said first end corresponding to said setback side of said drilling rig substructure, and wherein said second erection connection is on an extension skid that is removably attached to a second end of said lower substructure box, said second end corresponding to said drawworks side of said drilling rig substructure.