Canadian Patents Database / Patent 2501463 Summary

Third-party information liability

Some of the information on this Web page has been provided by external sources. The Government of Canada is not responsible for the accuracy, reliability or currency of the information supplied by external sources. Users wishing to rely upon this information should consult directly with the source of the information. Content provided by external sources is not subject to official languages, privacy and accessibility requirements.

Claims and Abstract availability

Any discrepancies in the text and image of the Claims and Abstract are due to differing posting times. Text of the Claims and Abstract are posted:

  • At the time the application is open to public inspection;
  • At the time of issue of the patent (grant).
(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

Sorry, the abstracts for patent document number 2501463 were not found.

Note: Claims are shown in the official language in which they were submitted.
Sorry, the claims 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
Note: Descriptions are shown in the official language in which they were submitted.


CA 02501463 2005-03-17
1 "SUPPORT APPARATUS FOR A LUBRICATOR IN A COILED TUBING
2 OPERATION"
3
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
apparatus for
7 supporting lubricator segments connected between a coiled tubing injector
and a
8 wellhead under loads imposed as a result of movement of the injector.
9
BACKGROI~NI~OF THF_ INVENTION
11 Conventionally, coiled tubing operations, such as wellbore
12 stimulation and workover operations, have been pertormed on vertical
wellbores
13 using vertical derricks and coiled tubing injectors which are moveable
vertically
14 within the derrick. Further it is known to provide injectors carried in
cradles which
are movable in two planes, vertically and horizontally to better align the
injector
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
injectors
19 on a derrick which can be slanted in at least one vertical plane to orient
the
injector with the wellbore. In some cases the chassis stabilizer's of the rig
are
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
moveable up
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
are
3 connected by unions. Each of the risers may weigh as much as 300-4.00 Ibs
and
4 may be rated to handle pressures in the order of about 5000 psi for
stimulation
or workover operations and the like. Conventional lubricators are designed to
be
6 used for vertical wellbores and thus are not designed to handle additional
loads
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
may
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
during
14 injection, either to a vertical wellbore or to a slant wellbore,
particularly when
injected using an injector capable of being rotated and tilted for alignment
with
16 the wellbore.
17
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
in the
carrier and relative to the derrick; and
2


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
hydraulic
3 cylinders or rams for movement of the injector in the carrier and relative
to the
4 derrick.
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
lubricator
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
22 to
11 the injector 10. A plurality of truss members 24, are connected between at
least
12 a portion of the lubricator sections 16 and the support member for
supporting the
13 lubricator sections 16 thereon and for reducing stress loading on the
lubricator
14 14. The support member 20 is spaced substantially parallel to the
lubricator 14
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
apparatus 20.
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.
3

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
derrick 34,
3 the injector 10 being capable of being rotated and tilted relative to the
derrick 34
4 and to which the lubricator support apparatus 20 may be used. The injector
10 is
rotatable and tiltable through a plurality of hydraulic rams 34 connected
between
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).
4

A single figure which represents the drawing illustrating the invention.

For a clearer understanding of the status of the application/patent presented on this page, the site Disclaimer , as well as the definitions for Patent , Administrative Status , Maintenance Fee  and Payment History  should be consulted.

Admin Status

Title Date
Forecasted Issue Date Unavailable
(22) Filed 2005-03-17
(41) Open to Public Inspection 2006-09-17
Dead Application 2007-06-20

Abandonment History

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

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Application Fee $200.00 2005-03-17
Expired 2019 - Corrective payment/Section 78.6 $200.00 2006-03-16
Current owners on record shown in alphabetical order.
Current Owners on Record
ANDREYCHUK, MARK T.
Past owners on record shown in alphabetical order.
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.

To view selected files, please enter reCAPTCHA code :




Filter

Document
Description
Date
(yyyy-mm-dd)
Number of pages Size of Image (KB)
Description 2005-03-17 4 135
Drawings 2005-03-17 2 68
Representative Drawing 2006-09-05 1 16
Cover Page 2006-09-05 1 35
Abstract 2006-09-17 1 1
Claims 2006-09-17 1 1
Assignment 2005-03-17 3 92
Correspondence 2005-04-27 1 28
Correspondence 2006-06-01 3 110
Prosecution-Amendment 2006-03-16 2 73
Correspondence 2006-03-29 1 17
Assignment 2005-03-17 6 201
Correspondence 2006-12-15 1 19