CA2215755A1 - Tubing hanger - Google Patents
Tubing hanger Download PDFInfo
- Publication number
- CA2215755A1 CA2215755A1 CA 2215755 CA2215755A CA2215755A1 CA 2215755 A1 CA2215755 A1 CA 2215755A1 CA 2215755 CA2215755 CA 2215755 CA 2215755 A CA2215755 A CA 2215755A CA 2215755 A1 CA2215755 A1 CA 2215755A1
- Authority
- CA
- Canada
- Prior art keywords
- tubular body
- projecting members
- inwardly projecting
- tubing hanger
- interior
- 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.)
- Abandoned
Links
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
A tubing hanger includes a first tubular body and a second tubular body. The first tubular body has two opposed inwardly projecting members. The second tubular body has two opposed outwardly projecting members. The second tubular body is telescopically received within the interior bore of the first tubular body. Each of the outwardly projecting members have radial slots sized to receive the inwardly projecting members of the first tubular body. When the outwardly projecting members are out of alignment with the inwardly projecting members the second tubular body can be withdrawn from the first tubular body. When the outwardly projecting members are in alignment with the inwardly projecting members become engaged in the slots of the outwardly projecting members.
Description
CA 0221~7~ 1997-09-18 TITLE OF THE lNV~NLlON:
tubing hanger NAMES OF lN V ~N LORS:
John McPhie Ralph Edward Wiley FIELD OF THE lNV~NLlON
The present invention relates to a tubing hanger and, in particular, a tubing hanger capable of placing tubing in tension.
BACKGROUND OF THE lNV~N'l lON
In the process of completing an oil or gas well, tubing is placed in the well bore and secured in position by means of an apparatus known as a "tubing hanger". It is sometimes preferred that the tubing be placed in tension. This is accomplished by securing a bottom end of the tubing in the well bore by means of an expandable packer and then exerting an upward force upon the tubing to place it in tension.
Apparatus developed for this purpose are either complex or require that a blow out preventer be removed from the well head during the tensioning procedure in order to permit access to an upper end of the tubing. An example of such an apparatus is British Patent Application GB 1494301. This British reference discloses a tubing head that has adjusting rams and ratchet teeth. The rams are capable of upwardly adjusting the tubing hanger to place the tubing in tension, the ratchet teeth ensure that the tubing hanger is capable of upward movement, CA 0221~7~ 1997-09-18 but not downward movement, during tensioning.
SUMMARY OF THE lNv~N-llON
What is required is a tubing hanger which can be used to place the tubing in tension without removing the blow out preventer.
According to the present invention there is provided a tubing hanger which includes a first tubular body and a second tubular body. The first tubular body has a first end, a second end, and an interior bore that extends between the first end and the second end. The interior bore has an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end. The second tubular body is telescopically received within the interior bore of the first tubular body. The second tubular body has a first end, a second end, and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end. Each of the outwardly projecting members have radial slots facing the second end sized to receive the inwardly projecting members of the first tubular body. When the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body, the second tubular body can be withdrawn from the first tubular body.
When the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members, the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the slots of the outwardly projecting members.
The tubing hanger, as described above, is capable of being used with a blow out preventer in place. First tubular body and second tubular body are coupled and then first tubular body is secured to a well head. Second tubular body with a tubing CA 0221~7~ 1997-09-18 string attached to it is then disengaged from first tubular body and lowered into the well. When a packer securing the tubing string in the well bore is set, second tubular body will be positioned a predetermined distance below first tubular body. In order to tension the tubing string, second tubular body is then drawn back into the first tubular body. Second tubular body can then be secured to the first tubular body by rotating the second tubular body until the outwardly projecting members of the second tubular body are in alignment with the inwardly projecting members of the first tubular body. The inwardly projecting members of the first tubular body are then positioned in the slots to non-rotatably couple the second tubular body with the first tubular body.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a side elevation view, in section, a tubing hanger constructed in accordance with the teachings of the present invention.
FIGURE 2 is a bottom plan view of the tubing hanger illustrated in FIGURE 1, with relative rotation of a first tubular body and a second tubular body by 45 degrees.
FIGURE 3 is a side elevation view, in section, of a first tubular body of the tubing hanger illustrated in FIGURE 1.
FIGURE 4 is a side elevation view, in section of a second tubular body of the tubing hanger illustrated in FIGURE 1.
FIGURE 5 iS a side elevation view of the second tubular body illustrated in FIGURE 4.
The preferred embodiment, a tubing hanger generally CA 0221~7~ 1997-09-18 identified by reference numeral 10, will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE 1, tubing hanger 10 includes a first tubular body 12 and a second tubular body 14. Referring to FIGURE 3, first tubular body 12 has a first end 16, a second end 18, an exterior surface 20 and an interior bore 22 that extends between first end 16 and second end 18. Interior bore 22 has an interior surface 24 from which two opposed inwardly projecting members 26 project radially inwardly adjacent second end 18. Exterior surface 20 has seal grooves 28 in which are positioned "O" ring seals 30. Exterior surface 20 also has a step down annular shoulder 32 positioned adjacent second end 18. Referring to FIGURE 1, second tubular body 14 is telescopically received within interior bore 22 of first tubular body 12. Referring to FIGURE 4, second tubular body 14 has a first end 34, a second end 36, an interior bore 38 with an interior surface 40 and an exterior surface 42 from which two opposed outwardly projecting members 44 project radially outwardly adjacent first end 34. Exterior threads 46 are positioned on exterior surface 42 of second tubular body 14 at second end 36. Interior threads 48 are positioned on interior surface 40 at first end 34. Second tubular body 14 has seal grooves 50 on exterior surface 42 at first end 34 in which are positioned "O" ring seals 52. Referring to FIGURE
5, each of outwardly projecting members 44 have radial ~J'~
slots 54 facing second end 36. "J" slots 54 are sized to receive inwardly projecting members 26 of first tubular body 12.
The use and operation of tubing hanger 10 will now be described with reference to FIGURES 1 through 5. Referring to FIGURE 2, second tubular body 14 is telescopically inserted into first tubular body 12. During such telescopic insertion, outwardly projecting members 44 are manoevered pass inwardly projecting members 26 of first tubular body 12. Referring to FIGURE 1, second tubular body 14 is then rotated so that CA 022l~7~ l997-09-l8 outwardly projecting members no longer are able to pass inwardly projecting members 26 and inwardly projecting members 26 are engaged in "J" slots 54. Tubing intended for insertion into a well (not shown) is secured to second end 36 of tubular 5 body 14 by means of exterior threads 46. A pipe (not shown) that is capable of being raised and lowered by a draw works of a rig is then secured to first end 34 of tubular body 14 by means of interior threads 48. The combined unit consisting of first tubular body 12 interlocked with second tubular body 14 is lowered and first tubular body 12 is then secured to a well head (not shown) which will include all equipment normally associated with a well head including a blow out preventer.
Annular shoulder 32 and ring seals 30 assist in ensuring that first tubular body 12 is held securely in the well head 15 creating a fluid seal. Second tubular body 14 is then rotated to allow second tubular body 14 to be withdrawn from first tubular member 12 and lowered into the well. Referring to FIGURE 2, it can be seen that when second tubular body 14 is rotated to place outwardly projecting members 44 out of 20 alignment with inwardly projecting members 26 of first tubular body 12, second tubular body 14 is able to be withdrawn from first tubular body 12. The lowering of second tubular body 14 into the well, also lowers the tubing string which is attached to second tubular body 14. When a packer securing the tubing 25 string in the well bore is set, second tubular body 14 will be positioned a predetermined distance below first tubular body 12. In order to tension the tubing string, second tubular body 14 is then drawn back up through first tubular body 12. After passing back past inwardly projecting members 26, second 30 tubular body 14 is rotated to place outwardly projecting members 44 in alignment with inwardly projecting members 12.
Second tubular body 14 is then lowered until inwardly projecting members 26 are positioned in "J" slots 54 of outwardly projecting members 44 as illustrated in FIGURE 1.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without CA 0221~7~ 1997-09-18 departing from the spirit and scope of the invention as hereinafter defined in the Claims.
tubing hanger NAMES OF lN V ~N LORS:
John McPhie Ralph Edward Wiley FIELD OF THE lNV~NLlON
The present invention relates to a tubing hanger and, in particular, a tubing hanger capable of placing tubing in tension.
BACKGROUND OF THE lNV~N'l lON
In the process of completing an oil or gas well, tubing is placed in the well bore and secured in position by means of an apparatus known as a "tubing hanger". It is sometimes preferred that the tubing be placed in tension. This is accomplished by securing a bottom end of the tubing in the well bore by means of an expandable packer and then exerting an upward force upon the tubing to place it in tension.
Apparatus developed for this purpose are either complex or require that a blow out preventer be removed from the well head during the tensioning procedure in order to permit access to an upper end of the tubing. An example of such an apparatus is British Patent Application GB 1494301. This British reference discloses a tubing head that has adjusting rams and ratchet teeth. The rams are capable of upwardly adjusting the tubing hanger to place the tubing in tension, the ratchet teeth ensure that the tubing hanger is capable of upward movement, CA 0221~7~ 1997-09-18 but not downward movement, during tensioning.
SUMMARY OF THE lNv~N-llON
What is required is a tubing hanger which can be used to place the tubing in tension without removing the blow out preventer.
According to the present invention there is provided a tubing hanger which includes a first tubular body and a second tubular body. The first tubular body has a first end, a second end, and an interior bore that extends between the first end and the second end. The interior bore has an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end. The second tubular body is telescopically received within the interior bore of the first tubular body. The second tubular body has a first end, a second end, and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end. Each of the outwardly projecting members have radial slots facing the second end sized to receive the inwardly projecting members of the first tubular body. When the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body, the second tubular body can be withdrawn from the first tubular body.
When the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members, the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the slots of the outwardly projecting members.
The tubing hanger, as described above, is capable of being used with a blow out preventer in place. First tubular body and second tubular body are coupled and then first tubular body is secured to a well head. Second tubular body with a tubing CA 0221~7~ 1997-09-18 string attached to it is then disengaged from first tubular body and lowered into the well. When a packer securing the tubing string in the well bore is set, second tubular body will be positioned a predetermined distance below first tubular body. In order to tension the tubing string, second tubular body is then drawn back into the first tubular body. Second tubular body can then be secured to the first tubular body by rotating the second tubular body until the outwardly projecting members of the second tubular body are in alignment with the inwardly projecting members of the first tubular body. The inwardly projecting members of the first tubular body are then positioned in the slots to non-rotatably couple the second tubular body with the first tubular body.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a side elevation view, in section, a tubing hanger constructed in accordance with the teachings of the present invention.
FIGURE 2 is a bottom plan view of the tubing hanger illustrated in FIGURE 1, with relative rotation of a first tubular body and a second tubular body by 45 degrees.
FIGURE 3 is a side elevation view, in section, of a first tubular body of the tubing hanger illustrated in FIGURE 1.
FIGURE 4 is a side elevation view, in section of a second tubular body of the tubing hanger illustrated in FIGURE 1.
FIGURE 5 iS a side elevation view of the second tubular body illustrated in FIGURE 4.
The preferred embodiment, a tubing hanger generally CA 0221~7~ 1997-09-18 identified by reference numeral 10, will now be described with reference to FIGURES 1 through 5.
Referring to FIGURE 1, tubing hanger 10 includes a first tubular body 12 and a second tubular body 14. Referring to FIGURE 3, first tubular body 12 has a first end 16, a second end 18, an exterior surface 20 and an interior bore 22 that extends between first end 16 and second end 18. Interior bore 22 has an interior surface 24 from which two opposed inwardly projecting members 26 project radially inwardly adjacent second end 18. Exterior surface 20 has seal grooves 28 in which are positioned "O" ring seals 30. Exterior surface 20 also has a step down annular shoulder 32 positioned adjacent second end 18. Referring to FIGURE 1, second tubular body 14 is telescopically received within interior bore 22 of first tubular body 12. Referring to FIGURE 4, second tubular body 14 has a first end 34, a second end 36, an interior bore 38 with an interior surface 40 and an exterior surface 42 from which two opposed outwardly projecting members 44 project radially outwardly adjacent first end 34. Exterior threads 46 are positioned on exterior surface 42 of second tubular body 14 at second end 36. Interior threads 48 are positioned on interior surface 40 at first end 34. Second tubular body 14 has seal grooves 50 on exterior surface 42 at first end 34 in which are positioned "O" ring seals 52. Referring to FIGURE
5, each of outwardly projecting members 44 have radial ~J'~
slots 54 facing second end 36. "J" slots 54 are sized to receive inwardly projecting members 26 of first tubular body 12.
The use and operation of tubing hanger 10 will now be described with reference to FIGURES 1 through 5. Referring to FIGURE 2, second tubular body 14 is telescopically inserted into first tubular body 12. During such telescopic insertion, outwardly projecting members 44 are manoevered pass inwardly projecting members 26 of first tubular body 12. Referring to FIGURE 1, second tubular body 14 is then rotated so that CA 022l~7~ l997-09-l8 outwardly projecting members no longer are able to pass inwardly projecting members 26 and inwardly projecting members 26 are engaged in "J" slots 54. Tubing intended for insertion into a well (not shown) is secured to second end 36 of tubular 5 body 14 by means of exterior threads 46. A pipe (not shown) that is capable of being raised and lowered by a draw works of a rig is then secured to first end 34 of tubular body 14 by means of interior threads 48. The combined unit consisting of first tubular body 12 interlocked with second tubular body 14 is lowered and first tubular body 12 is then secured to a well head (not shown) which will include all equipment normally associated with a well head including a blow out preventer.
Annular shoulder 32 and ring seals 30 assist in ensuring that first tubular body 12 is held securely in the well head 15 creating a fluid seal. Second tubular body 14 is then rotated to allow second tubular body 14 to be withdrawn from first tubular member 12 and lowered into the well. Referring to FIGURE 2, it can be seen that when second tubular body 14 is rotated to place outwardly projecting members 44 out of 20 alignment with inwardly projecting members 26 of first tubular body 12, second tubular body 14 is able to be withdrawn from first tubular body 12. The lowering of second tubular body 14 into the well, also lowers the tubing string which is attached to second tubular body 14. When a packer securing the tubing 25 string in the well bore is set, second tubular body 14 will be positioned a predetermined distance below first tubular body 12. In order to tension the tubing string, second tubular body 14 is then drawn back up through first tubular body 12. After passing back past inwardly projecting members 26, second 30 tubular body 14 is rotated to place outwardly projecting members 44 in alignment with inwardly projecting members 12.
Second tubular body 14 is then lowered until inwardly projecting members 26 are positioned in "J" slots 54 of outwardly projecting members 44 as illustrated in FIGURE 1.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without CA 0221~7~ 1997-09-18 departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (8)
1. A tubing hanger, comprising:
a first tubular body having a first end, a second end, and an interior bore that extends between the first end and the second end, the interior bore having an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end;
a second tubular body telescopically received within the interior bore of the first tubular body, the second tubular body having a first end, a second end, and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end, each of the outwardly projecting members having radial slots facing the second end sized to receive the inwardly projecting members of the first tubular body, such that when the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body, the second tubular body can with withdrawn from the first tubular body, and when after passing the inwardly projecting members the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the slots of the outwardly projecting members.
a first tubular body having a first end, a second end, and an interior bore that extends between the first end and the second end, the interior bore having an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end;
a second tubular body telescopically received within the interior bore of the first tubular body, the second tubular body having a first end, a second end, and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end, each of the outwardly projecting members having radial slots facing the second end sized to receive the inwardly projecting members of the first tubular body, such that when the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body, the second tubular body can with withdrawn from the first tubular body, and when after passing the inwardly projecting members the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the slots of the outwardly projecting members.
2. The tubing hanger as defined in Claim 1, wherein the slots are in a "J" configuration.
3. The tubing hanger as defined in Claim 1, wherein exterior threads are positioned on the exterior surface of the second tubular body at the second end.
4. The tubing hanger as defined in Claim 1, wherein the second tubular body has an interior bore with an interior surface, interior threads are positioned on the interior surface at the first end.
5. The tubing hanger as defined in Claim 1, wherein the second tubular body has seal grooves on the exterior surface at the first end in which are positioned ring seals.
6. The tubing hanger as defined in Claim 1, wherein the first tubular body has an exterior surface with an annular shoulder positioned adjacent the second end.
7. The tubing hanger as defined in Claim 1, wherein the first tubular body has an exterior surface with seal grooves in which are positioned ring seals.
8. A tubing hanger, comprising:
a first tubular body having a first end, a second end, an exterior surface and an interior bore that extends between the first end and the second end, the interior bore having an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end, the exterior surface having seal grooves in which are positioned ring seals and an annular shoulder positioned adjacent the second end;
a second tubular body telescopically received within the interior bore of the first tubular body, the second tubular body having a first end, a second end, an interior bore with an interior surface and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end, exterior threads positioned on the exterior surface of the second tubular body at the second end, interior threads positioned on the interior surface at the first end, the second tubular body has seal grooves on the exterior surface at the first end in which are positioned ring seals, each of the outwardly projecting members having radial "J" slots facing the second end sized to receive the inwardly projecting members of the first tubular body, such that when the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body the second tubular body can be withdrawn from the first tubular body, and when after passing the inwardly projecting members the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the "J" slots of the outwardly projecting members.
a first tubular body having a first end, a second end, an exterior surface and an interior bore that extends between the first end and the second end, the interior bore having an interior surface from which two opposed inwardly projecting members project radially inwardly adjacent the second end, the exterior surface having seal grooves in which are positioned ring seals and an annular shoulder positioned adjacent the second end;
a second tubular body telescopically received within the interior bore of the first tubular body, the second tubular body having a first end, a second end, an interior bore with an interior surface and an exterior surface from which two opposed outwardly projecting members project radially outwardly adjacent the first end, exterior threads positioned on the exterior surface of the second tubular body at the second end, interior threads positioned on the interior surface at the first end, the second tubular body has seal grooves on the exterior surface at the first end in which are positioned ring seals, each of the outwardly projecting members having radial "J" slots facing the second end sized to receive the inwardly projecting members of the first tubular body, such that when the second tubular body is rotated to place the outwardly projecting members out of alignment with the inwardly projecting members of the first tubular body the second tubular body can be withdrawn from the first tubular body, and when after passing the inwardly projecting members the second tubular body is rotated to place the outwardly projecting members in alignment with the inwardly projecting members the second tubular body is secured to the first tubular body by positioning the inwardly projecting members in the "J" slots of the outwardly projecting members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2215755 CA2215755A1 (en) | 1997-09-18 | 1997-09-18 | Tubing hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2215755 CA2215755A1 (en) | 1997-09-18 | 1997-09-18 | Tubing hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2215755A1 true CA2215755A1 (en) | 1998-08-07 |
Family
ID=4161482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2215755 Abandoned CA2215755A1 (en) | 1997-09-18 | 1997-09-18 | Tubing hanger |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2215755A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063112A1 (en) * | 2008-12-05 | 2010-06-10 | Tracy Earl Klotz | Well tool with connectors and adapted for use with power tongs |
| US10344540B2 (en) | 2015-11-16 | 2019-07-09 | Fmc Technologies, Inc. | Coupling for high strength riser with mechanically attached support members with load shoulders |
-
1997
- 1997-09-18 CA CA 2215755 patent/CA2215755A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063112A1 (en) * | 2008-12-05 | 2010-06-10 | Tracy Earl Klotz | Well tool with connectors and adapted for use with power tongs |
| US9562404B2 (en) | 2008-12-05 | 2017-02-07 | Titus Tools, Inc. | Well tubing hanger adapted for use with power tongs and method of using same |
| US10344540B2 (en) | 2015-11-16 | 2019-07-09 | Fmc Technologies, Inc. | Coupling for high strength riser with mechanically attached support members with load shoulders |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |