CN204113166U - expansion hanger - Google Patents
expansion hanger Download PDFInfo
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- CN204113166U CN204113166U CN201420505796.1U CN201420505796U CN204113166U CN 204113166 U CN204113166 U CN 204113166U CN 201420505796 U CN201420505796 U CN 201420505796U CN 204113166 U CN204113166 U CN 204113166U
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- expansion tube
- pipe
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Abstract
The utility model discloses a kind of expansion hanger, it comprises: expansion tube, and having can along the bulge of himself radial dilatation; Suppress pipe, it to be located in described expansion tube and to form annular space with described expansion tube; First plug, for suppressing the cavity of pipe described in blocking; Load-bearing joint, for the front end of annular space is closed, load-bearing joint by the first screw thread with suppress pipe and be connected, load-bearing joint is connected with expansion tube by the second screw thread, and the rotation direction of the first screw thread and the second screw thread is contrary; Second plug is used for the back-end closure of described annular space; Swollen cone can slide and described annular space is divided into front space and the back space of sealing mutually in annular space, suppresses pressurizing port pipe offering and is connected with back space; Be set in the metal ring on the bulge of expansion tube and packing element respectively.The utility model can be widely used in the suspension of screen casing or tail pipe; Do not need to arrange dividing plate or load-bearing ring, substantially reduce the activity duration, reduce operating risk.
Description
Technical field
The utility model relate to a kind of corollary apparatus of oil exploitation down-hole, especially also relates to a kind of expansion hanger.
Background technology
Hanger realizes the vitals that production tree is connected with downhole production pipeline, and its major function is the passage etc. hanging tubing string, annular space between Seal Oil tubing string and production string post and provide producing well liquid.Traditional packer adopts slips mode to carry out the hanger hanging and seal, the out-of-flatness that slip-type hanger may exist due to the borehole wall due to the connection of slips and the borehole wall, and making that there is between slips and the borehole wall certain gap, it has the shortcoming of sealing function difference to cause such packer.In order to meet its sealing, in after slip-type hanger hangs, latus rectum size is general less, will certainly have impact on the job execution efficiency of later stage Oil/gas Well like this.
Bulged tube technology is the new technology be surging forward in recent years, and it can be applicable to drilling well, completion and the operation process such as oil recovery, well workover.Expansion hanger is the hanger that a kind of one end developed based on bulged tube technology is connected with tubing string, and it is for improving suspension force.Compare traditional hanger, expansion hanger utilizes the plastic deformation strain characteristics of expansion tubing, and in after expanding, latus rectum is large.
But the weight capacity of expansion hanger of the prior art is poor.In order to improve weight capacity, staff of the prior art can install dividing plate or load-bearing ring usually.Dividing plate is installed and is caused working procedure complexity, will inevitably corresponding increase activity duration and cost.Adopt latus rectum in the hanger completion rear overhang hanging device of load-bearing ring inconsistent, and hanger premature setting may be caused, successfully can not give up after construction, therefore can there is certain construction risk.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model there is provided a kind of expansion hanger, and its structure is simple also can bear certain active force.
Concrete technical scheme of the present utility model is:
A kind of expansion hanger, it comprises:
Expansion tube, expansion tube has along the relative front-end and back-end of himself axis direction, and described expansion tube has one can along the bulge of himself radial dilatation;
Suppress pipe, it to be located in described expansion tube and to form an annular space with described expansion tube, described in suppress pipe there is the cavity extended along described expansion tube axis direction, described in suppress the front end of pipe for being connected with tubing string by the described cavity suppressing pipe;
First plug, its be arranged on described in suppress the rear end of pipe and the cavity for suppressing pipe described in blocking;
Load-bearing joint, its be positioned at described expansion tube front end and for the front end of described annular space is closed, described load-bearing joint is connected with described pipe of suppressing by the first screw thread, described load-bearing joint is connected with described expansion tube by the second screw thread, and the rotation direction of described first screw thread and described second screw thread is contrary;
Second plug, its be set in described in suppress pipe upper and for the back-end closure by described annular space;
Swollen cone, it can slide and described annular space is divided into front space and the back space of sealing mutually in described annular space, describedly suppress pressurizing port pipe offering and is connected with described back space, described swollen cone have one when described swollen cone is along the axis of described expansion tube towards front slide the contact part that contact corresponding with the bulge of described expansion tube;
Be set in the metal ring on the bulge of described expansion tube and packing element respectively, described metal ring is adjacent on casing wall prior to described packing element.
Preferably, it is also comprised and the described joint suppressed pipe and be connected by the 3rd screw thread, and the front portion of described joint is used for being connected by the 4th screw thread with tubing string, and the rotation direction of described 3rd screw thread, described 4th screw thread and described first screw thread is identical.
Preferably, between described second plug and the inwall of described expansion tube, be provided with the first sealing ring, between described swollen cone and the inwall of described expansion tube, be provided with the second sealing ring.
Preferably, described first plug and described second plug one-piece construction.
Preferably, described expansion tube comprises bulge, the first permanent footpath portion from front to back successively, and described bulge comprises the second permanent footpath portion and the first varying diameter portion from front to back; When described bulge does not expand, the section radius in described first permanent footpath portion is greater than the section radius in described second permanent footpath portion, and the section radius of described first varying diameter portion becomes large gradually along the axis direction backward of described expansion tube.
Preferably, the contact part of described swollen cone comprises the 4th permanent footpath portion, the second varying diameter portion and the 3rd permanent footpath portion from front to back successively, and described 3rd permanent footpath portion, the 4th permanent footpath portion, described second varying diameter portion match with the first permanent footpath portion of unexpanded described expansion tube, the second permanent footpath portion and the first varying diameter portion respectively.
Preferably, described expansion hanger comprises first metal ring of more described packing element near the rear end of described expansion tube.
Preferably, described expansion hanger also comprises second metal ring of more described packing element away from the rear end of described expansion tube.
Expansion hanger in the utility model adopts said structure to have the following advantages: adopt metal ring to hang, relative slip insert, and the contact area of metal ring and casing wall is large, and the suspension force of the expansion hanger thus in the utility model is large; The utility model adopts packing element sealing, than the good sealing effect of the hanger expansion hanger of the present utility model of employing metal sealing; When giving up, only need rotation to suppress pipe, just can realize giving up, method of giving up more of the prior art is more convenient firm; The screen casing hung or tail pipe are adopted load-bearing joint by threaded function on tubing string, and bearing capacity is large, can not premature setting, expansion hanger in the utility model after setting in latus rectum consistent, there is no step not reducing place, thus set stressed comparatively stable, set effective; Expansion hanger in the utility model has independently annular seal space, thus be not only applicable to hang tail pipe, can also be used for hanging screen casing, the interior latus rectum of the expansion hanger simultaneously in the utility model is not by the restriction of structure, and therefore the utility model can be widely used in the suspension of screen casing or tail pipe; The utility model does not need to arrange dividing plate or load-bearing ring, substantially reduces the activity duration, reduces operating risk.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 shows the structural representation of expansion hanger in the utility model.
Fig. 2 shows the structural representation that expansion hanger in the utility model is in an operating position.
Fig. 3 shows the structural representation that expansion hanger in the utility model is in another operating position.
Fig. 4 shows the structural representation that expansion hanger in the utility model is in another operating position.
Fig. 5 shows the structural representation that expansion hanger in the utility model is in another operating position.
The Reference numeral of above accompanying drawing: 1, expansion tube; 11, inner chamber; 12, front end; 13, rear end; 14, bulge; 15, the first permanent footpath portion; 16, the second permanent footpath portion; 17, the first varying diameter portion; 2, pipe is suppressed; 21, cavity; 22, annular space; 221, front space; 222, back space; 23, pressurizing port; 3, the first plug; 4, load-bearing joint; 5, the second plug; 6, swollen cone; 60, contact part; 61, the 3rd permanent footpath portion; 62, the 4th permanent footpath portion; 63, varying diameter portion; 7, the first screw thread; 8, the second screw thread; 9, metal ring; 91, the first metal ring; 92, the second metal ring; 10, packing element; 101, the first sealing ring; 102, the second sealing ring; 103, joint; 104, the 3rd screw thread; 105, the 4th screw thread; 106, pressure release passage.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Shown in Fig. 5, the utility model discloses a kind of expansion hanger, it comprise expansion tube 1, suppress pipe 2, first plug 3, load-bearing joint 4, second plug 5, swollen cone 6, metal ring 9 and packing element 10.
Concrete, expansion tube 1 can be cylindrical.Expansion tube 1 is formed with an inner chamber 11 through along the own axes direction of expansion tube 1.In FIG, the own axes of expansion tube 1 parallels with the horizontal axis of Fig. 1.Expansion tube 1 has along the relative front end 12 of himself axis direction and rear end 13.With reference to shown in Fig. 1, the left side of expansion tube 1 is its front end 12, and the right side of expansion tube 1 is its rear end 13.The rear end 13 of expansion tube 1 is for being connected with screen casing or tail pipe.Between the rear and front end of expansion tube 1, expansion tube 1 is also formed with one can along the bulge 14 of the radial dilatation of expansion tube.In the present embodiment, to comprise the section radius in permanent footpath portion of bulge 14, first permanent footpath portion 15, first 15 from front to back constant for expansion tube 1.Described bulge 14 comprises the second permanent footpath portion 16 and the first varying diameter portion 17 from front to back successively, when this bulge 14 does not produce expansion, the section radius in the second permanent footpath portion 16 is constant, the section radius in described first permanent footpath portion 15 is greater than the section radius in described second permanent footpath portion 16, the section radius of described first varying diameter portion 17 becomes large gradually along the axis direction backward of described expansion tube 1, namely the section radius of the front end of this first varying diameter portion 17 is identical with the second portion 16, permanent footpath, and the section radius of the rear end of the first varying diameter portion 17 is identical with the first portion 15, permanent footpath.When this bulge 14 expands gradually, the first varying diameter portion 17 and the second permanent footpath portion 16 deformable attribute certain because own material has, their section radius becomes large gradually.
Suppressing pipe 2 also can be cylindrical.Suppress pipe 2 to be located in expansion tube 1, and the axis suppressing pipe 2 parallels with the axis of expansion tube 1.In one preferred embodiment, conveniently install and be convenient to processing, suppress pipe 2 and coaxially arrange with expansion tube 1.Suppressing the annular space 22 being formed with between pipe 2 and expansion tube 1 and extending along the horizontal axis in Fig. 1, namely this annular space 22 is formed by the part suppressed between the outer wall of pipe 2 and the inwall of expansion tube 1.Suppress pipe 2 and there is a cavity 21 extended along the axis direction suppressing pipe 2, the front end (namely suppressing the left side of pipe 2 in Fig. 1) suppressing pipe 2 is connected with tubing string, makes to suppress pipe 2 and is connected can enter from the front end suppressing pipe 2 suppress suppressing liquid the cavity 21 of pipe 2 with upstream components.First plug 3 is arranged on the rear end (namely suppressing the right side of pipe 2 in Fig. 1) suppressing pipe 2, and the first plug 3 will suppress the back-end closure of pipe 2, cannot flow out to make pressurized fluid from the rear end suppressing pipe 2.Suppress on wall that pipe 2 locates between its front-end and back-end and offer pressurizing port 23.This pressurizing port 23 is for being connected the cavity 21 suppressing pipe 2 with annular space 22.Second plug 5 is set in the rear end suppressing pipe 2, and the second plug 5 is arranged on expansion tube 1 and suppresses between pipe 2 with the back-end sealing by annular space 22.
Load-bearing joint 4 is positioned at the front end 12 of expansion tube 1, and is arranged on expansion tube 1 and suppresses between pipe 2 with the forward end seal by annular space 22.Load-bearing joint 4 by the first screw thread 7 with suppress pipe 2 and be connected.Load-bearing joint 4 is connected with expansion tube 1 by the second screw thread 8.First screw thread 7 is contrary with the rotation direction of the second screw thread 8, namely when rotation suppresses pipe 2 to make load-bearing joint 4 and expansion tube 1 are separated by the second screw thread 8, in the process load-bearing joint 4 with suppress pipe 2 and can not be separated by the first screw thread 7.
Screen casing or tail pipe can be fixedly connected by the modes such as screw thread and expansion tube 1, and thus the weight of screen casing or tail pipe is applied on expansion tube 1.Expansion tube 1 by the second screw thread 8 to be connected with load-bearing joint 4 with by the weight conversion of expansion tube 1 on load-bearing joint 4.Load-bearing joint 4 by the first screw thread 7 with suppress pipe 2 and be connected, suppress pipe 2 and be connected with tubing string, thus the weight conversion of tubing string is at the front end place suppressing pipe 2.
Swollen cone 6 can be slidably arranged in annular space 22, and annular space 22 is divided into front space 221 and the back space 222 of sealing mutually.Pressurizing port 23 is connected with the back space 222 of annular space 22.Swollen cone 6 has the contact part 60 relative with the bulge 14 of expansion tube 1, when suppressing after liquid enters back space 222, and swollen cone 6 forward slip contact part 60 and bulge 14 are offseted make bulge 14 to produce expansion radially under the ordering about suppressing liquid.In the present embodiment, the contact part 60 of described swollen cone 6 comprises the 4th permanent footpath portion 62, second varying diameter portion 63 and the 3rd permanent footpath portion 61 from front to back successively, and described 3rd permanent footpath portion 62 of permanent footpath portion the 61, the 4th, described second varying diameter portion 63 match with the first permanent footpath portion of permanent footpath portion 15, second 16 of the described expansion tube 1 when not producing expansion and the first varying diameter portion 17 respectively.Namely the section radius in the first permanent footpath portion 16 of permanent footpath portion 15, second is constant, and the section radius in the first permanent footpath portion 15 is greater than the section radius in the second permanent footpath portion 16.The section radius of the first varying diameter portion 17 becomes large from front to back gradually, and the section radius of the front end of the first varying diameter portion 17 is identical with the second portion 16, permanent footpath, and the section radius of the first varying diameter portion 17 rear end is identical with the first portion 15, permanent footpath.With reference to shown in Fig. 1, because the internal diameter size in the first permanent footpath portion 15 of expansion tube 1 is comparatively large, swollen cone 6 was slidingly fitted by its 3rd permanent footpath portion 61 and the first permanent footpath portion 15 in the starting stage (when being namely positioned at the rear side of expansion tube 1).With reference to shown in Fig. 2, swollen cone 6 travels forward, when the second varying diameter portion 63 of swollen cone 6 and the first varying diameter portion 17 of expansion tube 1 match contact time, the work that the second varying diameter portion 63 of swollen cone 6 and the first varying diameter portion 17 of expansion tube 1 serve guiding matches in order to the second permanent footpath portion 15 in the 4th permanent footpath portion 62 with expansion tube 1 that make swollen cone 6 and contacts.With reference to shown in Fig. 3, swollen cone 6 travels forward further, 3rd permanent footpath portion 61 of swollen cone 6 produces with the second permanent footpath portion 15 of expansion tube 1 gradually conflicts, because expansion tube 6 has certain elasticity, the second permanent footpath portion 15 of such expansion tube 1 becomes large until measure-alike with the 3rd portion 61, permanent footpath of swollen cone 6 gradually.
Metal ring 9 is set on the bulge 14 of expansion tube 1.Bulge 14 produces expansion radially, metal ring 9 is expanded and is close on casing wall to play the effect of suspension.
Packing element 10 is set on the bulge 14 of expansion tube 1.When expansion hanger suspension and metal ring 9 are close to after on casing wall, packing element 10 produces and expands and be close on casing wall to play sealing function.
The operating principle of the expansion hanger in the utility model is as follows: with reference to shown in Fig. 1, suppress liquid to suppress to suppressing in pipe 2 to squeeze into, and suppresses the back space 222 being entered annular space 22 in the cavity 21 of liquid from pressure pipe 2 by pressurizing port 23.The liquid of suppressing entering back space 222 makes front and back in annular space 22 uneven, thus promotes swollen cone 6 and travel forward.With reference to shown in Fig. 2, the contact part 60 of swollen cone 6 is inconsistent with expansion tube 1 in proal process, and makes the bulge 14 of expansion tube 1 produce expansion radially.With reference to shown in Fig. 3, swollen cone 6 is conflicted with the expansion tube 1 at metal ring 9 place, and metal ring 9 generation is expanded and is close on casing wall to produce suspension.With reference to shown in Fig. 4, after metal ring 9 hangs, swollen cone 6 moves forward in process, and swollen cone 6 is conflicted with the expansion tube 1 at packing element 10 place, and makes packing element 10 produce elongation along horizontal axis, thus reaches sealing function.With reference to shown in Fig. 5, when giving up, swollen cone 6 moves forward, now rotation is simultaneously suppressed pipe 2 and load-bearing joint 4 and expansion tube 1 is separated, because the second screw thread 8 is contrary with the rotation direction of the first screw thread 7, in the process, suppress pipe 2 to depart from load-bearing joint 4.Continue to suppress and upper lifting pipe post, expansion tube 1 is inflated completely and comes.Now swollen cone 6 is separated with expansion tube 1, and swollen cone 6 forms pressure release passage with expansion tube 1, and the pressurized fluid being originally arranged in the back space 222 of annular space 22 is overflowed from this pressure release passage 106, causes expansion hanger releasing pressure automatically.Now in the utility model expansion hanger set hang complete, Back-off Pipe String can be tripped out pit shaft by upper lifting pipe post.
Expansion hanger in the utility model adopts said structure to have the following advantages:
1, adopt metal ring 9 to hang, relative slip insert metal ring 9 is large with the contact area of casing wall, and the suspension force of the expansion hanger thus in the utility model is large;
2, the utility model adopts packing element 10 to seal, than the good sealing effect of the hanger expansion hanger of the present utility model of employing metal sealing;
3, when giving up, only need rotation to suppress pipe 2, just can realize giving up, method of giving up more of the prior art is more convenient firm;
4, the screen casing hung or tail pipe are adopted load-bearing joint 4 by threaded function on tubing string, bearing capacity is large, can not premature setting, expansion hanger in the utility model after setting in latus rectum consistent, there is no step not reducing place, thus set stressed comparatively stable, set effective;
5, the expansion hanger in the utility model has independently annular seal space, thus be not only applicable to hang tail pipe, can also be used for hanging screen casing, the interior latus rectum of the expansion hanger simultaneously in the utility model is not by the restriction of structure, and therefore the utility model can be widely used in the suspension of screen casing or tail pipe;
6, the utility model does not need to arrange dividing plate or load-bearing ring, substantially reduces the activity duration, reduces operating risk.
In one preferred embodiment, expansion hanger can also comprise joint 103, the rear portion of described joint 103 is connected by the 3rd screw thread 104 with described pipe 2 of suppressing, the front portion of described joint 103 is used for being connected by the 4th screw thread 105 with tubing string, the rotation direction of described 3rd screw thread 104, described 4th screw thread 105 and described first screw thread 7 is identical, to guarantee that when giving up joint 103 or can not be suppressed pipe and throws off with tubing string.Suppress pipe 2 to be connected by the 4th screw thread 105 with joint 103, thus by the weight conversion of tubing string on joint 103.
In one preferred embodiment, be provided with the first sealing ring 101 between the second plug 5 and the inwall of expansion tube 1 to produce from the gap between the second plug 5 and expansion tube 1 miss to guarantee to suppress liquid.The second sealing ring 102 is provided with to guarantee to suppress liquid can not enter annular space 22 front space 221 from the gap between swollen cone 6 and expansion tube 1 between 3rd permanent footpath portion 61 of swollen cone 6 and the first portion 15, permanent footpath inwall of expansion tube 1.
In one preferred embodiment, the first plug 3 and the second plug 5 one-piece construction install difficulty of processing to reduce.
In one preferred embodiment, described expansion hanger comprises first metal ring 91 of more described packing element 10 near the rear end 13 of expansion tube 1.Described expansion hanger also comprises second metal ring 92 of more described packing element 10 away from the rear end 13 of expansion tube 1.When swollen cone 6 moves forward to the expansion tube 1 at the first metal ring 91 place, the expansion tube 1 at the first metal ring 91 place produces and expands, and makes the first metal ring 91 be adjacent to generation suspension on casing wall at first.When swollen cone 6 moves forward to the expansion tube 1 at packing element 10 place, the expansion tube 1 at packing element 10 place produces and expands, and packing element 10 is adjacent on casing wall.When swollen cone 6 moves forward to the expansion tube 1 at the second metal ring 92 place, the expansion tube 1 at the second metal ring 92 place produces and expands, and the second metal ring 92 is finally adjacent on casing wall.Adopt this kind of structure, the first metal ring 91 and the second metal ring 91 are formed in the both sides, front and back of packing element 10 and support, to guarantee the fastness that packing element 10 seals.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (8)
1. an expansion hanger, is characterized in that, it comprises:
Expansion tube, described expansion tube has along the relative front-end and back-end of himself axis direction, and described expansion tube has one can along the bulge of himself radial dilatation;
Suppress pipe, it to be located in described expansion tube and to form an annular space with described expansion tube, described in suppress pipe there is the cavity extended along described expansion tube axis direction, described in suppress the front end of pipe for being connected with tubing string by the described cavity suppressing pipe;
First plug, its be arranged on described in suppress the rear end of pipe and the cavity for suppressing pipe described in blocking;
Load-bearing joint, its be positioned at described expansion tube front end and for the front end of described annular space is closed, described load-bearing joint is connected with described pipe of suppressing by the first screw thread, described load-bearing joint is connected with described expansion tube by the second screw thread, and the rotation direction of described first screw thread and described second screw thread is contrary;
Second plug, its be set in described in suppress pipe upper and for the back-end closure by described annular space;
Swollen cone, it can slide and described annular space is divided into front space and the back space of sealing mutually in described annular space, describedly suppress pressurizing port pipe offering and is connected with described back space, described swollen cone have one when described swollen cone is along the axis of described expansion tube towards front slide the contact part that contact corresponding with the bulge of described expansion tube;
Be set in the metal ring on the bulge of described expansion tube and packing element respectively, described metal ring is adjacent on casing wall prior to described packing element.
2. expansion hanger according to claim 1, it is characterized in that: described expansion hanger is also comprised and the described joint suppressed pipe and be connected by the 3rd screw thread, the front portion of described joint is used for being connected by the 4th screw thread with tubing string, and the rotation direction of described 3rd screw thread, described 4th screw thread and described first screw thread is identical.
3. expansion hanger according to claim 1, is characterized in that: be provided with the first sealing ring between described second plug and the inwall of described expansion tube, is provided with the second sealing ring between described swollen cone and the inwall of described expansion tube.
4. the expansion hanger according to claim 1 or 3, is characterized in that: described first plug and described second plug one-piece construction.
5. expansion hanger according to claim 1, is characterized in that: described expansion tube comprises bulge, the first permanent footpath portion from front to back successively, and described bulge comprises the second permanent footpath portion and the first varying diameter portion from front to back; When described bulge does not expand, the section radius in described first permanent footpath portion is greater than the section radius in described second permanent footpath portion, and the section radius of described first varying diameter portion becomes large gradually along the axis direction backward of described expansion tube.
6. expansion hanger according to claim 5, it is characterized in that: the contact part of described swollen cone comprises the 4th permanent footpath portion, the second varying diameter portion and the 3rd permanent footpath portion from front to back successively, described 3rd permanent footpath portion, the 4th permanent footpath portion, described second varying diameter portion match with the first permanent footpath portion of unexpanded described expansion tube, the second permanent footpath portion and the first varying diameter portion respectively.
7. expansion hanger according to claim 1, is characterized in that: described expansion hanger comprises first metal ring of more described packing element near the rear end of described expansion tube.
8. expansion hanger according to claim 7, is characterized in that: described expansion hanger also comprises second metal ring of more described packing element away from the rear end of described expansion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505796.1U CN204113166U (en) | 2014-09-03 | 2014-09-03 | expansion hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505796.1U CN204113166U (en) | 2014-09-03 | 2014-09-03 | expansion hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113166U true CN204113166U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505796.1U Active CN204113166U (en) | 2014-09-03 | 2014-09-03 | expansion hanger |
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| CN (1) | CN204113166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265218A (en) * | 2014-09-03 | 2015-01-07 | 中国石油天然气股份有限公司 | Expansion hanger |
| CN108463612A (en) * | 2016-02-29 | 2018-08-28 | 哈里伯顿能源服务公司 | Collapsible cone for expandable liner hanger system |
-
2014
- 2014-09-03 CN CN201420505796.1U patent/CN204113166U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265218A (en) * | 2014-09-03 | 2015-01-07 | 中国石油天然气股份有限公司 | Expansion hanger |
| CN108463612A (en) * | 2016-02-29 | 2018-08-28 | 哈里伯顿能源服务公司 | Collapsible cone for expandable liner hanger system |
| US10837265B2 (en) | 2016-02-29 | 2020-11-17 | Halliburton Energy Services, Inc. | Collapsible cone for an expandable liner hanger system |
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