CN203547616U - Expanding tail pipe hanger - Google Patents
Expanding tail pipe hanger Download PDFInfo
- Publication number
- CN203547616U CN203547616U CN201320718383.7U CN201320718383U CN203547616U CN 203547616 U CN203547616 U CN 203547616U CN 201320718383 U CN201320718383 U CN 201320718383U CN 203547616 U CN203547616 U CN 203547616U
- Authority
- CN
- China
- Prior art keywords
- hanger
- expanding
- tail pipe
- annular groove
- pipe
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 21
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model provides an expanding tail pipe hanger which comprises a hanger body of a pipe-shaped structure. A connecting-back barrel connector is arranged at the upper end of a pipe, annular grooves are formed in the outer surface in the middle of the hanger body at intervals, rubber cylinders are arranged in the annular grooves, annular groove walls between the rubber cylinders are rubber cylinder supporting rings, expanding annular grooves are formed in the positions corresponding to the rubber cylinders are formed in the hanger body, and sealing annular faces are arranged at the partitioning positions of the expanding annular grooves. According to the expanding tail pipe hanger, expanding rings deform and expand by inner sealing pressing, so that the rubber cylinders deform and are attached on the inner wall of a sleeve pipe, then a tail pipe is fixed, no movable parts exist, the risk of tail pipe hanger sealing in advance is removed, the multiple elastic rubber cylinders can effectively prevent blow-by, the sleeve pipe cannot be damaged, the probability of potential corrosion is removed, and well cementing quality can be helped to be improved through outer diameter reduction and fluid channel smoothness.
Description
Technical field
The utility model relates to Petroleum Production oil well field of accessories, is specifically related to expandable liner hanger.
Background technology
In well cementation and completion practice, a general difficult problem is exactly that tail pipe top fault rate is high, the main cause of tail pipe top fault or tail pipe operation failure has: tail pipe top cement top plug is bad, tail pipe extension/packer moves in advance, designated depth will do not arrived under tail pipe, the fault of other instruments etc., the solution of these problems has consumed a large amount of time, increased cost, traditional extension hanger technology is to use multiple slips, hydraulic setting etc., but reduced radial clearance, increased tail pipe top and tail pipe failed risk has been installed, these risks can minimize by new technology and can remove completely in many cases.
Summary of the invention
In order to overcome the deficiency of background technology, the utility model provides expandable liner hanger, adopts bulk expansion structure to address the above problem.
The technical solution of the utility model is: expandable liner hanger comprises hanger body, hanger body is a tubular-shaped structures, pipe upper end is tieback bucket joint, external surface interval, hanger body middle part has annular groove, annular groove is built-in with packing element, annular groove wall between packing element is packing element support ring, and the corresponding packing element of hanger body interior position has expansion annular groove, and the interval of expansion annular groove is sealing ring surface.
Described packing element quantity is five.
Described expansion loop, the thickness of its wall thickness is 2.5mm, width is 35mm.
The utlity model has following beneficial effect: expandable liner hanger is suppressed and made expansion loop deformed dilation by inner sealing, make packing element distortion be attached to internal surface of sleeve pipe, thereby fixing tail pipe, there is no mobile parts, eliminated tail pipe and hung the risk of premature setting, multiple elasticity packing element effectively prevents from collaborating, to sleeve pipe without injury, eliminate the possibility of potential corrosion, the minimizing of external diameter and fluid passage unimpeded can help to improve cementing quality.
accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is use location figure of the present utility model.
1-tieback bucket joint in figure, 2-packing element, 3-packing element support ring, 4-expansion annular groove, 5-sealing ring surface, 6-hanger body.
the specific embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, expandable liner hanger, comprise hanger body 6, hanger body 6 is a tubular-shaped structures, pipe upper end is tieback bucket joint 1, hanger body 6 external surface intervals, middle part have annular groove, annular groove is built-in with packing element 2, annular groove wall between packing element 2 is packing element support ring 3, by support ring 3, guarantee that packing element 2 can only can not be out of shape near sleeve pipe by radial deformation vertically, the inner corresponding packing element of hanger body 62 positions have expansion annular groove 4, the interval of expansion annular groove 4 is sealing ring surface 5, with instrument, seal every two sealing ring surfaces 5, suppress to expansion annular groove 4, the annular groove 4 that makes to expand produces permanent deformation, the expansion annular groove 4 compressing packing elements 2 of distortion extend and oppress sleeve pipe to sleeve pipe, produce sealing and fixation.
Described packing element 2 quantity are five, effectively prevent from collaborating, and sleeve pipe, without injury, is eliminated to the possibility of potential corrosion.
Described expansion annular groove 4, the thickness of its wall thickness is 2.5mm, and width is 35mm, and in this size range, metal produces permanent deformation and does not have elastic deformation and makes to seal solid failure, and the pressure of suppressing is not high.
Claims (3)
1. an expandable liner hanger, comprise hanger body (6), it is characterized in that: hanger body (6) is a tubular-shaped structures, pipe upper end is tieback bucket joint (1), external surface interval, hanger body (6) middle part has annular groove, annular groove is built-in with packing element (2), annular groove wall between packing element (2) is packing element support ring (3), the inner corresponding packing element of hanger body (6) (2) position has expansion annular groove (4), and the interval of expansion annular groove (4) is sealing ring surface (5).
2. expandable liner hanger according to claim 1, is characterized in that: described packing element (2) quantity is five.
3. expandable liner hanger according to claim 2, is characterized in that: described expansion annular groove (4), and the thickness of its wall thickness is 2.5mm, width is 35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718383.7U CN203547616U (en) | 2013-11-15 | 2013-11-15 | Expanding tail pipe hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718383.7U CN203547616U (en) | 2013-11-15 | 2013-11-15 | Expanding tail pipe hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547616U true CN203547616U (en) | 2014-04-16 |
Family
ID=50465745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320718383.7U Expired - Fee Related CN203547616U (en) | 2013-11-15 | 2013-11-15 | Expanding tail pipe hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555567A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | High angle hole, horizontal cementing abrasionproof plug |
-
2013
- 2013-11-15 CN CN201320718383.7U patent/CN203547616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555567A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | High angle hole, horizontal cementing abrasionproof plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 |