Coiled tubing rig

Patent metadata

Field	Value
Publication number	US-10697243-B2
Application number	US-201715642943-A
Country	US
Kind code	B2
Filing date	Jul 6, 2017
Priority date	Jul 13, 2016
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A coiled tubing rig includes a skid, a mast, and a drill floor. The mast may be pivotably coupled to the skid and may be moved between a horizontal position and a vertical position by a hydraulic cylinder. The drill floor may be pivotably coupled to the mast. The drill floor may be moved from a retracted to a deployed position by a hydraulic cylinder. The skid may include a BOP cradle and BOP controls. The coiled tubing rig may include a jib which may telescopically or pivotably extend from the mast. The coiled tubing rig may include a coiled tubing injector which is slidably positionable between a retracted and a deployed position.

First claim

The invention claimed is:

1. A coiled tubing rig comprising:
a skid;
a mast pivotably coupled to the skid at a mast pivot, the mast positioned out of alignment with a wellhead, the mast moveable between a horizontal position and a vertical position, the mast traversing within a plane defined as a mast pivot plane when moving from the horizontal position to the vertical position;
a coiled tubing injector, the coiled tubing injector directly mechanically coupled to the mast by an injector boom, the coiled tubing injector movable linearly relative to the mast along the injector boom in a horizontal direction between a retracted position and a deployed position, the horizontal direction parallel to the mast pivot plane, the injector boom coupled directly to the mast while the mast is in the horizontal and vertical positions, and the coiled tubing injector coupled directly to the mast by the injector boom while the mast is in the horizontal and vertical positions; and
a drill floor pivotably coupled to the mast.

2. The coiled tubing rig of claim 1 , wherein the coiled tubing injector extends from the mast such that it is in alignment with the wellhead when in the deployed position.

3. The coiled tubing rig of claim 1 , wherein the mast is mechanically coupled to the skid by a hydraulic cylinder.

4. The coiled tubing rig of claim 1 , wherein the coiled tubing injector is movable relative to the mast in a vertical direction.

5. The coiled tubing rig of claim 1 , further comprising a jib, the jib mechanically coupled to the mast.

6. The coiled tubing rig of claim 5 , wherein the jib is pivotably or telescopically coupled to the mast.

7. The coiled tubing rig of claim 5 , further comprising a hoisting boom mechanically coupled to the jib.

8. The coiled tubing rig of claim 7 , wherein the hoisting boom extends from the jib such that the hoisting boom is aligned with the wellhead.

9. The coiled tubing rig of claim 8 , wherein the hoisting boom is pivotably coupled to the jib such that it may move between a retracted and a deployed position, wherein the hoisting boom is in alignment with the wellhead when in the deployed position and is not in alignment with the wellhead when in the retracted position.

10. The coiled tubing rig of claim 1 , further comprising a knuckleboom crane, the knuckleboom crane mechanically coupled to the mast.

11. The coiled tubing rig of claim 10 , wherein the knuckleboom crane comprises:
a column mechanically coupled to the mast;
an inner boom pivotably coupled to the column;
an outer boom pivotably coupled to the inner boom; and
a hoisting fixture supported from the outer boom by a hoisting line.

12. The coiled tubing rig of claim 1 , further comprising a BOP cradle.

13. The coiled tubing rig of claim 12 , further comprising a BOP control unit positioned on the skid.

14. The coiled tubing rig of claim 13 , further comprising a BOP, the BOP operatively coupled to the BOP control unit and positioned in the BOP cradle.

15. The coiled tubing rig of claim 1 , wherein the skid is mechanically coupled to or formed integrally with a trailer.

16. A method comprising:
providing a coiled tubing rig, the coiled tubing rig positioned in a transport configuration, the coiled tubing rig including:
a skid;
a mast pivotably coupled to the skid at a mast pivot, the mast positioned in a horizontal position;
a coiled tubing injector, the coiled tubing injector directly mechanically coupled to the mast by an injector boom, the coiled tubing injector slidable relative to the injector boom from a retracted position to a deployed position; and
a drill floor mechanically coupled to the mast;

transporting the coiled tubing rig to a wellhead of a wellbore;
extending the drill floor from a retracted position to a deployed position;
raising the mast from the horizontal position to a vertical position such that the mast is positioned out of alignment with the wellhead, the mast traversing within a plane defined as a mast pivot plane; and
moving the coiled tubing injector from the retracted position to the deployed position linearly along the injector boom in a horizontal direction parallel to the mast pivot plane such that the coiled tubing injector is in alignment with the wellhead.

17. The method of claim 16 , further comprising injecting a coiled tubing string into the wellbore with the coiled tubing injector.

18. The method of claim 16 , wherein the mast is mechanically coupled to the skid by a hydraulic cylinder, and raising the mast from a horizontal position to a vertical position comprises extending the hydraulic cylinder.

19. The method of claim 16 , wherein the drill floor is mechanically coupled to the mast by a drill floor hydraulic cylinder, and extending the drill floor comprises extending the drill floor hydraulic cylinder.

20. The method of claim 16 , wherein moving the coiled tubing injector comprises sliding the coiled tubing injector relative to the injector boom.

21. The method of claim 16 , wherein the coiled tubing rig further comprises a jib, and the method further comprises deploying the jib.

22. The method of claim 21 , wherein deploying the jib comprises pivoting the jib relative to the mast at a jib pivot.

23. The method of claim 21 , wherein deploying the jib comprises extending the jib from the mast telescopically.

24. The method of claim 21 , wherein the coiled tubing rig further comprises a hoisting boom mechanically coupled to the jib, and the method further comprises:
moving the coiled tubing injector into the retracted position out of alignment with the wellhead;
hoisting a piece of wellbore equipment into alignment with the wellhead using the hoisting boom;
positioning the piece of wellbore equipment in the wellbore; and
moving the coiled tubing injector into the extended position.

25. The method of claim 24 , further comprising coupling the piece of wellbore equipment to the coiled tubing string.

26. The method of claim 16 , wherein the coiled tubing rig further comprises:
a BOP, the BOP positioned in a BOP cradle during transport; and
a BOP hoist system, the BOP hoist system mechanically coupled to the drill floor;
wherein the method further comprises lifting the BOP using the BOP hoist system and positioning the BOP above the wellhead using the BOP hoist system.

Assignees

• Nabors Drilling Tech Usa Inc

Inventors

• Lee Denver
• Korach Donovan
• Gupta Ashish

Classifications

• E21B19/22 Primary

  Handling reeled pipe or rod units, e.g. flexible drilling pipes {(lifting or hauling appliances using two or more cooperating endless chains B66D3/003)} · CPC title

• E21B15/003

  adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells · CPC title

• E21B7/024

  having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling · CPC title

• E21B7/023 Primary

  the mast being foldable or telescopically retractable · CPC title

• E21B19/084

  with flexible drawing means, e.g. cables · CPC title