Canadian Patents Database / Patent 2501463 Summary
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|(12) Patent Application:||(11) CA 2501463|
|(54) English Title:||SUPPORT APPARATUS FOR A LUBRICATOR IN A COILED TUBING OPERATION|
|(54) French Title:||DISPOSITIF DE SUPPORT DE LUBRIFICATEUR DANS UNE OPERATION EN SERPENTIN|
- Bibliographic Data
- Representative Drawing
- Admin Status
- Owners on Record
|(51) International Patent Classification (IPC):||
|(72) Inventors :||
|(73) Owners :||
|(71) Applicants :||
|(74) Agent:||PARLEE MCLAWS LLP|
|(74) Associate agent:|
|(22) Filed Date:||2005-03-17|
|(41) Open to Public Inspection:||2006-09-17|
|(30) Availability of licence:||N/A|
|(30) Language of filing:||English|
Sorry, the abstracts for patent document number 2501463 were not found.
Text is not available for all patent documents. The current dates of coverage are on the Currency of Information page
CA 02501463 2005-03-17
1 "SUPPORT APPARATUS FOR A LUBRICATOR IN A COILED TUBING
4 FIELD OF THE INVENTION
The apparatus relates to the field of lubricators used in coiled
6 tubing operations in the petroleum industry and more particularly to
7 supporting lubricator segments connected between a coiled tubing injector
8 wellhead under loads imposed as a result of movement of the injector.
BACKGROI~NI~OF THF_ INVENTION
11 Conventionally, coiled tubing operations, such as wellbore
12 stimulation and workover operations, have been pertormed on vertical
13 using vertical derricks and coiled tubing injectors which are moveable
14 within the derrick. Further it is known to provide injectors carried in
are movable in two planes, vertically and horizontally to better align the
16 with the wellbore.
17 With the introduction of directional wellbores and particularly with
18 slant weilbores, it is known to provide vertically actuable coiled tubing
19 on a derrick which can be slanted in at least one vertical plane to orient
injector with the wellbore. In some cases the chassis stabilizer's of the rig
21 also manipulated somewhat to provide tilt in a second vertical plane.
22 Applicant is also aware of injectors which rotate and tilt relative to a
23 trolley and to a derrick along which the trolley slides. The injector is
24 and down the derrick using a winch mechanism and is capable of being
adjusted, using hydraulic cylinders, to align with the wellbore.
CA 02501463 2005-03-17
1 Injectors are typically connected to the wellhead through a
2 lubricator which is comprised of a plurality of lubricator sections which
3 connected by unions. Each of the risers may weigh as much as 300-4.00 Ibs
4 may be rated to handle pressures in the order of about 5000 psi for
or workover operations and the like. Conventional lubricators are designed to
6 used for vertical wellbores and thus are not designed to handle additional
7 placed on them during alignment and connection to a slant wellbore.
8 Additionally, movement of a tiltable injector in any direction would cause
9 increased stress loads to be placed on the lubricator which may already be
placed under tension as a result of the injection operations. Further, the
11 lubricator may be caused to sag or to bind during injection operations and
12 not be capable of withstanding the high pressure load for which they are
13 designed. Clearly what is required is means for supporting the lubricator
14 injection, either to a vertical wellbore or to a slant wellbore,
injected using an injector capable of being rotated and tilted for alignment
16 the wellbore.
18 BRI~F DESCRIPTION OF THE DRAWINGS
19 Figure 1 is a side view of a lubricator support apparatus according
to an embodiment of the invention;
21 Figure 2 is a back view of an injector which is rotatable and tiltable
22 relative to a derrick in which the injector is supported;
23 Figure 3 is a side view of a carrier for an injector according to Fig. 2
24 and illustrating hydraulic cylinders or rams for movement of the injector
carrier and relative to the derrick; and
CA 02501463 2005-03-17
1 Figure 4 is a front view of the injector according to Fig. 2,
2 illustrating the injector supported in the derrick and further illustrating
3 cylinders or rams for movement of the injector in the carrier and relative
6 DESCRIPTION OF THE INVENTION
7 As shown in Fig. 1, an injector 10 is connected to a wellhead 12
8 through a lubricator 14. The lubricator 14 comprises a plurality of
9 sections 16 which are connected to one another by unions 18 for forming the
lubricator 14. A lubricator support apparatus 20 is connected, at a first end
11 the injector 10. A plurality of truss members 24, are connected between at
12 a portion of the lubricator sections 16 and the support member for
13 lubricator sections 16 thereon and for reducing stress loading on the
14 14. The support member 20 is spaced substantially parallel to the
by the truss members 24, which are fastened to both the lubricator 14 and the
16 support member 20.
17 In an embodiment of the invention, the lubricator support apparatus
18 20 further comprises a plurality of support segments 26 which are fastened
19 together using fasteners 28, such as pins, for forming the support
Preferably, a truss member 24 is connected between each of the lubricator
21 sections 16 and a corresponding support segment 26. Further, use of
22 corresponding support segments 26 and truss members 24 permit the support
23 apparatus 20 to be readily constructed of a length required to support the
24 lubricator 14, regardless the length of the lubricator 14.
CA 02501463 2005-03-17
1 Figs. 2-4 illustrate a portion of a coiled tubing rig 30 having an
2 injector 10 carried in a saddle 32 mounted in a trolley or carriage in a
3 the injector 10 being capable of being rotated and tilted relative to the
4 and to which the lubricator support apparatus 20 may be used. The injector
rotatable and tiltable through a plurality of hydraulic rams 34 connected
6 the saddle 32, the injector 10 and the derrick 34.
7 Further, the lubricator support apparatus 20 is also applicable in
8 coiled tubing operations performed in vertical wellbores (not shown).
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|Forecasted Issue Date||Unavailable|
|(41) Open to Public Inspection||2006-09-17|
|Abandonment Date||Reason||Reinstatement Date|
|2006-06-20||FAILURE TO RESPOND TO OFFICE LETTER|
|2007-03-19||FAILURE TO PAY APPLICATION MAINTENANCE FEE|
|2007-03-19||FAILURE TO COMPLETE|
|Current Owners on Record|
|ANDREYCHUK, MARK T.|
|Past Owners on Record|