Guide rails for mobile drilling rig

• US 9,970,211 B2
• Filed: 04/27/2017
• Issued: 05/15/2018
• Est. Priority Date: 05/02/2016
• Status: Active Grant

• Current Assignee: Dreco Energy Services ULC (National Oilwell Varco Incorporated)
• Original Assignee: Dreco Energy Services ULC (National Oilwell Varco Incorporated)
• Inventors: Konduc, Kameron Wayne, Lugovtsov, Yury
• Primary Examiner(s): Smith, Jason C
• Application Number:
  US15/498,572
• Publication Number:
  US 20170335591A1
• Time in Patent Office: 383 Days
• CPC Class Codes: E04H 12/34 Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
• CPC Class Codes: E21B 12/00 Accessories for drilling tools
• CPC Class Codes: E21B 15/00 Supports for the drilling machine, e.g. derricks or masts
• 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 7/02 Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting

Abstract

A system for supporting and transporting a drilling rig. The system may have a pair of rails, wherein each rail has a plurality of rail segments and a plurality of connections between the segments. Moreover, each connection may have a plurality of interlocking lugs secured with a shear pin and opposing abutment faces, such that each connection may be configured to transfer moment and shear forces between adjacent rail segments. In some embodiments, the each rail segment may be configured to support a point load of up to 1000 kips. In some embodiments, each rail segment may have a protruding connector and a receiving connector, and each connection may include the protruding connector of a first segment and the receiving connector of a second segment. In some embodiments, a portion of each connection may be configured for tension loading and another portion may be configured for compression loading.

Claims

1. A system for supporting and transporting a drilling rig, the system comprising:

a pair of rails, each rail comprising a plurality of rail segments and a plurality of connections between the segments, such that each rail comprises a continuous rail system;

wherein each connection comprises;

a plurality of interlocking lugs secured with a shear pin and arranged between a first segment and a second segment of the plurality of rail segments; and

an abutment face arranged on an end of the first segment, above or below the plurality of interlocking lugs, and configured to abut an abutment face on an end of the second segment;

such that each connection is configured to transfer moment and shear forces between adjacent rail segments and reduce beam deflection.

2. The system of claim 1, wherein each rail segment is configured to support a point load of at least 1000 kips.

3. The system of claim 1, wherein each rail segment comprises a protruding connector and a receiving connector, and wherein each connection comprises the protruding connector of the first segment and the receiving connector of the second segment.

4. The system of claim 1, wherein a portion of each connection is configured for tension loading and a portion of the connection is configured for compression loading.

5. The system of claim 4, wherein the plurality of interlocking lugs secured with a shear pin are configured for tension loading, such that the tension component of a moment load is transferred between adjacent segments.

6. The system of claim 4, wherein the opposing abutment faces are configured for compression loading, such that the compression component of a moment load is transferred between adjacent segments.

7. The system of claim 1, wherein the connections between segments are configured to transfer vertical shear forces between segments.

8. The system of claim 1, wherein each segment of the plurality of segments has a moment of inertia configured to minimize beam deflection.

9. A rail for supporting and transporting a drilling rig, the rail comprising a plurality of rail segments, each segment comprising:

a base layer comprising;

a protruding connector arranged at a first end of the rail segment and configured to engage a receiving connector of an adjacent rail segment; and

a receiving connector arranged at an opposing second end of the rail segment and configured to engage a protruding connector of an adjacent rail segment;

a roller assembly guide configured to engage with one or more rollers coupled to a drilling rig; and

an intermediary layer arranged between the base layer and the rail assembly guide.

10. The rail of claim 9, wherein the intermediary layer is a first intermediary layer, and each segment further comprises a second intermediary layer arranged between the first intermediary layer and the rail assembly guide.

11. The rail of claim 10, wherein each of the first and second intermediary layers comprises at least one support structure having a plurality of inner brackets.

12. The rail of claim 9, wherein each of the protruding connector and the receiving connector comprise a plurality of interlocking lugs.

13. The rail of claim 9, wherein each segment further comprises an abutment face arranged at each of the two ends of the segment, the abutment faces arranged above or below the connectors, each abutment face configured to abut an opposing abutment face of an adjacent rail segment.

14. The rail of claim 9, wherein each segment has a moment of inertia configured to minimize beam deflection.

15. The rail of claim 9, wherein each segment is configured to support a point load of at least 1000 kips.

16. A connection between first and second rail segments of a rail for supporting and transporting a drilling rig, the connection comprising:

a tension connector configured for tension loading, such that the tension component of a moment load is transferred between the two rail segments; and

an abutment face arranged on an end of the first segment, above or below the tension connector, and configured to abut an abutment face on an end of the second segment, the opposing abutment faces configured for compression loading, such that the compression component of a moment load is transferred between the two rail segments.

17. The connection of claim 16, wherein the tension connector comprises a plurality of interlocking lugs and a shear pin arranged therethrough.

18. The connection of claim 16, wherein the tension connector comprises a barbell connector.

19. The connection of claim 16, wherein the tension connector comprises a protruding connector arranged at the end of the first rail segment, and a receiving connector arranged at the end of the second rail segment.

20. The connection of claim 16, wherein the connection is configured to transfer vertical shear forces between the two segments.