CA2942495C - Tubing rotator - Google Patents

Tubing rotator Download PDF

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Publication number
CA2942495C
CA2942495C CA2942495A CA2942495A CA2942495C CA 2942495 C CA2942495 C CA 2942495C CA 2942495 A CA2942495 A CA 2942495A CA 2942495 A CA2942495 A CA 2942495A CA 2942495 C CA2942495 C CA 2942495C
Authority
CA
Canada
Prior art keywords
tubing
linear actuator
attachment
wellhead
tubing head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CA2942495A
Other languages
French (fr)
Other versions
CA2942495A1 (en
Inventor
Myles R. Morrison
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boon Energy Services Inc
Original Assignee
Boon Energy Services Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boon Energy Services Inc filed Critical Boon Energy Services Inc
Priority to CA2942495A priority Critical patent/CA2942495C/en
Publication of CA2942495A1 publication Critical patent/CA2942495A1/en
Application granted granted Critical
Publication of CA2942495C publication Critical patent/CA2942495C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • E21B33/04Casing heads; Suspending casings or tubings in well heads
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00Equipment or details not covered by groups E21B15/00 - E21B40/00

Abstract

A tubing rotator rotates tubing string in a well. One embodiment of the tubing rotator comprises a wellhead attachment part, a tubing head attachment part and a linear actuator. Operation of the linear actuator causes circumferential displacement of the tubing head relative to the wellhead. The tubing rotator may have an extension plate to increase the angle of rotation of the tubing head relative to the wellhead. The tubing rotator may be remotely controlled.

Description

TUBING ROTATOR
TECHNICAL FIELD
[0001] Rotators for rotating tubing string in a well.
BACKGROUND
[0002] Many wells in the oil and gas industry require to be rotated from surface.
Rotating the tubing string prolongs the life of the tubing string by distributing normal wear over the entire tubing string and slowing buildup of materials within the tubing string.
[0003] Traditionally, manual tubing rotations were performed by using many workers to manually spin the wellhead on the surface resulting in the tubing string rotating downhole. Hazards of this process include crush points, overexertion, stored energy, and congestion.
SUMMARY
[0004] In an embodiment, there is provided a tubing rotator for rotating a tubing string in a well, the tubing rotator attaching to a wellhead having a tubing head.
[0005] The tubing rotator may comprise a wellhead attachment part, a tubing head attachment part and a linear actuator connecting between the wellhead attachment part and the tubing head attachment part to circumferentially displace of the tubing head relative to the wellhead.
[0006] In various embodiments, there may be included any one or more of the following features: the linear actuator connects to the tubing head attachment part at a linear actuator connection point; an extension plate extending from the tubing head attachment part which displaces the linear actuator connection point from the tubing head attachment part and extends tangentially to the tubing head; operation of the linear actuator causes the tubing head to rotate 90 degrees relative to the wellhead; the linear actuator is a hydraulic ram; the tubing rotator is remotely controlled.

BRIEF DESCRIPTION OF THE FIGURES
[0007] Embodiments will now be described with reference to the figures, in which like reference characters denote like elements, by way of example, and in which:
[0008] Fig. 1 is a perspective view of an embodiment of a tubing rotator.
[0009] Fig. 2 is a top plan view showing the tubing rotator in a starting position.
[0010] Fig. 3 is a top plan view showing the tubing rotator in a retracted position.
[0011] Fig. 4 is atop plan view of a second embodiment in a starting position of the tubing rotator with an extension plate.
DETAILED DESCRIPTION
[0012] Immaterial modifications may be made to the embodiments described here without departing from what is covered by the claims.
[0013] A tubing rotator 10 rotates tubing string in a well. Referring to Fig. 1, one embodiment of the tubing rotator 10 comprises a casing bowl attachment 12, a tubing head attachment part 18 and a linear actuator 16.
[0014] Operation of the linear actuator 16 causes the tubing head 30 to rotate about a central axis of a wellhead (not shown), where the central axis of the wellhead is oriented parallel to the tubing string within the wellhead. The tubing head 30 may be any part of the wellhead that supports the tubing string so that as the tubing head rotates the tubing string rotates with it. The angle of rotation of the tubing string and the tubing head are identical. A
tubing hanger may be located within the tubing head to support the tubing string.
[0015] The linear actuator 16 is connected to the casing bowl attachment 12 and to the tubing head attachment part 18. The linear actuator 16 has an actuating part 24 and an output part 26 that extends from the actuating part 24. Linear actuator 16 may be any actuator that creates motion in a straight line, and may be hydraulically or pneumatically operated, for example a hydraulic ram. The output part 26 may slidably extend from the actuating part 24, and may attach to either of the casing bowl attachment 12 or the tubing head attachment part 18. The output part 26 may be substantially straight, for example a rod, or may be bent or curved. Actuating part 24 attaches to the other of the casing bowl attachment 12 and the tubing head attachment part 18. The linear actuator 16 may be pivotally attached to the casing bowl attachment 12 and to the tubing head attachment part 18 in order to circumferentially displace the tubing head 30 relative to the wellhead on operation of the linear actuator.
[0016] The linear actuator 16 connects to the tubing head attachment part 18 at a linear actuator connection point 42 on the tubing head attachment part 18. The linear actuator 16 connects to the casing bowl attachment 12 at a second linear actuator connection point 64 on the wellhead attachment part 12.
[0017] The casing bowl attachment 12 is removably secured to the wellhead, for example at a wellhead flange 20 on a wellhead part 14. Casing bowl attachment 12 may have a frame 50 with a top plate 54, a bottom plate 52 and a flange attachment housing 60.
Referring to Fig. 2, the frame 50 may have a side wall 58 that acts as a block to restrict movement of linear actuator 16 towards the wellhead. The casing bowl attachment 12 may be secured to the wellhead flange 20 by a pin extending through a part of the flange attachment housing 60 which rests underneath the wellhead flange 20.
[0018] In an embodiment, the frame 50 may support the linear actuator at the linear actuator connection point 64 on the wellhead attachment part 12. The linear actuator may rest between bottom plate 52 and top plate 54 and may be pivotally secured to the top plate 54 by a pivot pin 56 and to the bottom plate 52 by a second pivot pin. Frame 50 may be pivotally attached to the actuating part 24, allowing the linear actuator to pivot perpendicularly to the central axis of the wellhead. The actuating part 24 may be attached to the wellhead attachment part 12 at any point along the actuating part 24, including actuating part head 62 as shown in Fig. 1.
[0019] 'the tubing head attachment part 18 is removably secured to the tubing head 30, for example a tubing head flange 22. Tubing head attachment part 18 may have upper and lower base plates (32, 34) and sidewall plates 38 supporting a flange plate 36 which rests on a tubing head flange 22. One or more pins 40 may secure the flange plate 36 to the tubing head flange 22. The linear actuator 16 may be pivotally connected to one end of the tubing head attachment part 18 at the linear actuator connection point 42 on the upper and lower base plates (32, 34). Output part 26 may terminate in a connection part 46, which may be substantially C-shaped and adapted to receive the upper and lower base plates (32, 34). Pivot pin 44 may extend through the connection part 46 and the upper and lower base plates (32, 34) of the tubing head attachment part 18.
[0020] As shown in Fig. 4, in another embodiment the tubing rotator 10 has an extension plate 70 that extends from the tubing head attachment part 18 and displaces the linear actuator connection point 42 from the tubing head attachment part 18.
The extension plate 70 is used to increase the angle of rotation of the tubing head relative to the wellhead.
The extension plate 70 extends tangentially to the tubing head and may be substantially L
shaped or curved. A first end of the extension plate 74 has a linear actuator connection point 42. The linear actuator 16 may be pivotally connected to the extension plate 70 by the same mechanism described to attach to the tubing head attachment part 18.
Connection part 46 at the end of the output part 26 may be adapted to receive the linear actuator connection point 42 on the extension plate 70, and pivot pin 44 extends through the clamp and the extension plate. A second end of the extension plate 76 is attached to the tubing head attachment part 18. The extension plate may be pivotally or statically secured to the tubing head attachment part 18. In an embodiment, the second end of the extension plate 76 may fit between the upper and lower base plates (32, 34) and be secured by pins 72.
[0021] Referring to Figs. 2 and 3, operation of the linear actuator causes the tubing head 30 to be circumferentially displaced relative to the rest of the wellhead.
[0022] As shown in Fig. 2, when the output part 26 of the linear actuator 16 is in an extended position the tubing head attachment part 18 is in a first position relative to the wellhead. As show in Fig. 3, the linear actuator 16 operates the output part 26 retracts into the actuating part 24 and exerts a force on the tubing head attachment part I
8, causing the tubing head 30 to rotate relative to wellhead part 14. During operation of the linear actuator 16, the output part 26 may be retracted fully or partially into the actuating part 24 depending on the desired angle of rotation of the tubing string. The actuating part 24 may swing towards the tubing head 30 during operation of the linear actuator 16. After operation of the linear actuator 16 the tubing head 30 is in a second position relative to the wellhead which is circumferentially displaced from the first position, as shown in Fig. 2. The tubing head in the second position may be rotated 90 degrees from the first position. The extension plate 70 may then be attached to the tubing rotator 10 to achieve a larger angle of rotation. After a further operation of the linear actuator 16, the tubing head 30 is in a third position which is circumferentially displaced from the first and second positions. The tubing head 30 in the third position may be rotated 180 degrees from the first position.
[0023] The tubing rotator may be installed on and removed from the wellhead as needed. The tubing rotator may be fully automated and operated remotely, removing the need for workers to be present while rotating the tubing string.
[0024] In the claims, the word "comprising" is used in its inclusive sense and does not exclude other elements being present. The indefinite articles "a" and "an"
before a claim feature do not exclude more than one of the feature being present. Each one of the individual features described here may be used in one or more embodiments and is not, by virtue only of being described here, to be construed as essential to all embodiments as defined by the claims.

Claims (5)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A tubing rotator for rotating a tubing string in a well, the tubing rotator attaching to a wellhead having a tubing head, comprising:
a wellhead attachment part, a tubing head attachment part and a linear actuator connecting between the wellhead attachment part and the tubing head attachment part to circumferentially displace of the tubing head relative to the wellhead.
2. The tubing rotator of claim 1 in which the linear actuator connects to the tubing head attachment part at a linear actuator connection point.
3. The tubing rotator of claim 2 further comprising an extension plate extending from the tubing head attachment part which displaces the linear actuator connection point from the tubing head attachment part and extends tangentially to the tubing head.
4. The tubing rotator of any one of claims 1-3 in which operation of the linear actuator causes the tubing head to rotate 90 degrees relative to the wellhead.
5. The tubing rotator of any one of claims 1-4 in which the linear actuator is a hydraulic ram.
CA2942495A 2016-09-21 2016-09-21 Tubing rotator Active CA2942495C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2942495A CA2942495C (en) 2016-09-21 2016-09-21 Tubing rotator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2942495A CA2942495C (en) 2016-09-21 2016-09-21 Tubing rotator

Publications (2)

Publication Number Publication Date
CA2942495A1 CA2942495A1 (en) 2018-03-21
CA2942495C true CA2942495C (en) 2019-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2942495A Active CA2942495C (en) 2016-09-21 2016-09-21 Tubing rotator

Country Status (1)

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CA (1) CA2942495C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021174313A1 (en) * 2020-03-06 2021-09-10 As Innovative Holdings Pty Ltd Rotatable wellhead and centraliser

Also Published As

Publication number Publication date
CA2942495A1 (en) 2018-03-21

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