CN221074183U - Double-seal coiled tubing hanger - Google Patents
Double-seal coiled tubing hanger Download PDFInfo
- Publication number
- CN221074183U CN221074183U CN202322972429.4U CN202322972429U CN221074183U CN 221074183 U CN221074183 U CN 221074183U CN 202322972429 U CN202322972429 U CN 202322972429U CN 221074183 U CN221074183 U CN 221074183U
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- CN
- China
- Prior art keywords
- hanger
- jackscrew
- cavity
- seal
- coiled tubing
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 2
- 239000000565 sealant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a double-seal coiled tubing hanger which comprises a hanger shell, wherein a cavity is axially arranged in the hanger shell, one end of the cavity is provided with a guide sleeve, an annular slip is arranged below the guide sleeve, a seal rubber core is arranged below the slip, a metal seal sleeve is arranged below the seal rubber core, a metal seal ring is arranged below the metal seal sleeve, and a copper sleeve is arranged below the metal seal ring; the guide sleeve, the slips, the sealing rubber core, the metal sealing sleeve, the metal sealing ring and the copper sleeve are all arranged in the cavity along the axis of the cavity, a plurality of slip jackscrews, rubber core jackscrews and sealing ring jackscrews are radially arranged on the hanger shell, one end of each slip jackscrew props against the outer wall of the slips, one end of each rubber core jackscrew props against the outer wall of the sealing rubber core, and one end of each sealing ring jackscrew props against the outer wall of the metal sealing ring. The double-seal continuous oil pipe hanger has the advantages of good sealing performance, stable oil pipe and long service life.
Description
Technical Field
The utility model relates to the technical field of hanger devices of petroleum exploitation equipment, in particular to a double-seal continuous oil pipe hanger.
Background
Tubing hangers are used in oil and gas production processes and the basic principle of coiled tubing hangers is to secure the coiled tubing in a wellhead or well by a carrier, clamping device or other mechanical means for operations such as drilling, logging, etc. When operating under long-term high-pressure and corrosive environment conditions, the internal components of the coiled tubing hanger may be damaged, the internal sealing performance of the conventional coiled tubing hanger is poor, leakage may be caused by sealing failure, and production interruption or other safety accidents are caused.
The patent of the issued publication number CN 213684058U discloses a built-in coiled tubing hanger and a coiled tubing system, wherein the built-in coiled tubing hanger comprises a hanger body, a through hole for placing the coiled tubing is arranged on the hanger body, the outer wall of the hanger body is used for being in sealing fit with a tubing head, a slip assembly and a sealing assembly are sequentially arranged in the through hole along the axial direction of the through hole, the sealing assembly is connected with the hanger body, the sealing assembly is used for sealing between the hanger body and the coiled tubing, the slip assembly is used for connecting the coiled tubing, and at least one part of the slip assembly is positioned in the through hole. According to the built-in coiled tubing hanger, in the process of converting a large oil pipe into a coiled tubing with a smaller diameter, the built-in coiled tubing hanger is used for transition, and a tubing head and a collecting tree do not need to be replaced, so that the cost is saved, and the construction difficulty is reduced. However, this application has a disadvantage in terms of sealing performance of the hanger and reliability of operation of the apparatus.
Disclosure of utility model
The utility model aims to provide a double-seal continuous oil pipe hanger which has good sealing performance, stable oil pipe clamping and long service life.
In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a double-seal coiled tubing hanger, includes the hanger casing, be provided with a cavity in the hanger casing axial, the cavity is provided with the uide bushing from the one end central axial extension of hanger casing to the other end of hanger casing, the one end of cavity, the below of uide bushing is provided with annular slips, the below of slips is provided with the sealed core that glues, the below of sealed core is provided with the metal seal cover, the below of metal seal cover is provided with the metal seal ring, the below of metal seal ring is provided with the copper sheathing, uide bushing, slips, sealed core, metal seal cover, metal seal ring and copper sheathing are all followed the axis setting of cavity is in the cavity, radially be provided with a plurality of slips jackscrews, core jackscrews and sealing ring jackscrews on the hanger casing, the outer wall of slips is propped to the one end of slips, the outer wall of sealed core is propped to the one end of sealing ring jackscrew, the outer wall of metal seal ring is propped to the one end of sealing ring.
Preferably, jackscrew sleeves are sleeved outside the slip jackscrews, the rubber core jackscrews and the sealing ring jackscrews, the jackscrew sleeves are embedded on the hanger shell, and the slip jackscrews, the rubber core jackscrews and the sealing ring jackscrews are in threaded connection with the corresponding jackscrew sleeves.
Preferably, a sealing ring is arranged between the metal sealing sleeve and the inner wall of the hanger shell.
Preferably, an upper slip is arranged between the guide sleeve and the slip, and thread teeth are arranged on the inner walls of the slip and the upper slip.
Preferably, the hanger shell is provided with an oil injector, and one end of the oil injector extends into the cavity.
Preferably, the oil injector is provided with a test valve assembly.
Preferably, the test valve assembly comprises a stop valve, a test valve and a pressure gauge, one end of the stop valve extends into the cavity, the pressure gauge and the test valve are arranged together, and one end of the test valve extends into the cavity.
The beneficial effects of the utility model are as follows: according to the double-seal coiled tubing hanger, two different sealing groups, namely the sealing rubber core and the sealing metal ring, are arranged in the hanger to seal, so that the double-seal coiled tubing hanger has higher sealing pressure, the sealing performance of the hanger is improved, the adopted slip assembly and jackscrew assembly can effectively prevent the coiled tubing from sliding downwards, the working reliability of equipment is improved, the working stability of the tubing is improved, the service life is long, and the double-seal coiled tubing hanger is hung by adopting two sets of slips and has good hanging stability.
Drawings
For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic illustration of the structure of a dual seal coiled tubing hanger of the present utility model;
fig. 2 and 3 are cross-sectional views of fig. 1 in different directions.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment of the utility model comprises the following steps:
The utility model provides a double-seal coiled tubing hanger, referring to fig. 1 to 3, which comprises a hanger shell 1, wherein a cavity 5 is axially arranged in the hanger shell 1, the cavity 5 axially extends from the center of one end of the hanger shell 1 to the other end of the hanger shell 1, a guide sleeve 12 is arranged at one end of the cavity 5, an annular slip 9 is arranged below the guide sleeve 12, a seal rubber core 8 is arranged below the slip 9, a metal seal sleeve 4 is arranged below the seal rubber core 8, a metal seal ring 3 is arranged below the metal seal sleeve 4, a copper sleeve 2 is arranged below the metal seal sleeve 3, the guide sleeve 12, the slip 9, the seal rubber core 8, the metal seal sleeve 4, the metal seal ring 3 and the copper sleeve 2 are all arranged in the cavity 5 along the axis of the cavity 5, a plurality of slip jackscrews 16, rubber core jackscrews 14 and seal ring jackscrews 13 are radially arranged on the hanger shell 1, one end of each slip jackscrew 16 is propped against the outer wall of the seal rubber core 9, one end of each seal ring 13 is propped against the outer wall of the seal ring core 8, and the other end of each seal ring is propped against the seal ring 13 of the outer wall of the slip core 8. The top of the hanger housing 1 is provided with a gasket 18, and the gasket 18 is sleeved on the guide sleeve 12, so that the firmness of connection of the hanger housing 1 and the rest parts of the petroleum exploitation equipment is improved.
Preferably, the slip jackscrew 16, the rubber core jackscrew 14 and the sealing ring jackscrew 13 are all sleeved with jackscrew sleeves 7, the jackscrew sleeves 7 are embedded on the hanger shell 1, and the slip jackscrew 16, the rubber core jackscrew 14 and the sealing ring jackscrew 13 are in threaded connection with the corresponding jackscrew sleeves 7. External threads are arranged on the outer peripheral surfaces of the slip jackscrew 16, the rubber core jackscrew 14 and the sealing ring jackscrew 13, internal threads are arranged on the inner cavity wall of the jackscrew sleeve 7, and the external threads are matched with the internal threads to realize threaded connection.
Preferably, a sealing ring 6 is arranged between the metal sealing sleeve 4 and the inner wall of the hanger shell 1, so that the sealing effect is improved.
Preferably, an upper slip 11 is arranged between the guide sleeve 12 and the slip 9, and thread teeth are arranged on the inner walls of the slip 9 and the upper slip 11.
Preferably, an oil injector 17 is provided on the hanger housing 1, and one end of the oil injector 17 extends into the cavity 5.
Preferably, the oil injector 17 is provided with a test valve assembly, and the test valve assembly comprises a stop valve 10, a test valve 20 and a pressure gauge 19. One end of the stop valve 10 extends into the cavity 5. The pressure gauge 19 is assembled with the test valve 20, and one end of the test valve 20 extends into the cavity 5. By observing the pressure of the pressure gauge 19, it is judged whether the inside is sealed well.
When the double-seal coiled tubing hanger is used, a coiled tubing (not shown in the figure) is inserted into a cavity 5 of a hanger shell 1, specifically, the coiled tubing passes through a guide sleeve 12, an upper slip 11, a slip 9, a sealant core 8, a metal sealing sleeve 4, a metal sealing ring 3 and a copper sleeve 2, the guide sleeve 12 is designed at the top of the hanger shell 1, the guide sleeve 12 has a centralizing function on the coiled tubing, meanwhile, the guide sleeve 12 adopts a wear-resistant material, the service life is longer, the slip 9 is provided with an internal thread structure, the force in the upper direction and the lower direction can be borne, the coiled tubing is not easy to slide, a plurality of groups of slip jackscrews 16 assemblies prop against the slip 9 from a plurality of directions, the slip 9 can be ensured to stably clamp the coiled tubing, the reliability of equipment is improved, and a plurality of groups of sealant core jackscrews 14 prop against the sealant core 8 from a plurality of directions, so that the coiled tubing is compressed and extruded inwards, and the soft sealing of the coiled tubing is realized; the metal seal ring jackscrews 13 are propped against the metal seal ring 3 from multiple directions, so that the metal seal ring jackscrews extrude the continuous oil pipe inwards, hard sealing of the continuous oil pipe is realized, and the metal seal sleeve 4 is matched with the metal seal ring 3 to enhance the sealing effect. The pressure test channel is reserved at the tail end of the hanger shell 1, and a test valve assembly is installed outside and comprises a stop valve 10, a test valve 20 and a pressure gauge 19 for internal pressure test. The copper sleeve 2 has the centralizing guiding function on the coiled tubing.
The utility model adopts two different sealing groups of the sealing rubber core and the metal sealing ring for sealing, has higher sealing pressure and improves the sealing performance of the hanger; the slip assembly and the jackscrew assembly adopted in the design can effectively prevent the coiled tubing from sliding down, and improve the working reliability of equipment.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.
Claims (7)
1. The utility model provides a double containment coiled tubing hanger, includes the hanger casing, the hanger casing is provided with a cavity in the axial, the cavity is provided with the uide bushing from the one end central axial of hanger casing to the other end of hanger casing, its characterized in that, the one end of cavity, the below of uide bushing is provided with annular slips, the below of slips is provided with the sealed core that glues, the below of sealed core is provided with the metal seal cover, the below of metal seal cover is provided with the metal seal ring, the below of metal seal ring is provided with the copper sheathing, uide bushing, slips, sealed core, metal seal cover, metal seal ring and copper sheathing are all followed the axis setting of cavity is in the cavity, radially be provided with a plurality of slips jackscrews, gluecore jackscrew and sealing ring jackscrew on the hanger casing, the outer wall of slips is jacked to the one end of slips jackscrew, the outer wall of sealed core is jacked to the one end of sealing ring jackscrew, the outer wall of metal seal ring is jacked to the one end of sealing ring.
2. The double-seal coiled tubing hanger of claim 1, wherein jackscrew sleeves are sleeved outside the slip jackscrew, the rubber core jackscrew and the sealing ring jackscrew, the jackscrew sleeves are embedded on the hanger shell, and the slip jackscrew, the rubber core jackscrew and the sealing ring jackscrew are in threaded connection with the corresponding jackscrew sleeves.
3. The dual seal coiled tubing hanger of claim 2, wherein a seal ring is disposed between the metal seal sleeve and an inner wall of the hanger housing.
4. A double-seal coiled tubing hanger according to claim 3, wherein an upper slip is provided between the guide sleeve and the slips, and thread teeth are provided on the inner walls of both the slips and the upper slip.
5. The dual seal coiled tubing hanger of claim 4, wherein an lubricator is provided on the hanger housing, one end of the lubricator extending into the cavity.
6. The dual seal coiled tubing hanger of claim 5, wherein the lubricator is provided with a test valve assembly thereon.
7. The dual seal coiled tubing hanger of claim 6, wherein the test valve assembly comprises a shut-off valve, a test valve and a pressure gauge, wherein one end of the shut-off valve extends into the cavity, the pressure gauge is integral with the test valve, and one end of the test valve extends into the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322972429.4U CN221074183U (en) | 2023-11-03 | 2023-11-03 | Double-seal coiled tubing hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322972429.4U CN221074183U (en) | 2023-11-03 | 2023-11-03 | Double-seal coiled tubing hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074183U true CN221074183U (en) | 2024-06-04 |
Family
ID=91266738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322972429.4U Active CN221074183U (en) | 2023-11-03 | 2023-11-03 | Double-seal coiled tubing hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074183U (en) |
-
2023
- 2023-11-03 CN CN202322972429.4U patent/CN221074183U/en active Active
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