CN203729925U - Expansion type liner hanger allowing well cementation - Google Patents
Expansion type liner hanger allowing well cementation Download PDFInfo
- Publication number
- CN203729925U CN203729925U CN201420004238.7U CN201420004238U CN203729925U CN 203729925 U CN203729925 U CN 203729925U CN 201420004238 U CN201420004238 U CN 201420004238U CN 203729925 U CN203729925 U CN 203729925U
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- China
- Prior art keywords
- cementing
- tail pipe
- well
- swollen cone
- expansion tube
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- Withdrawn - After Issue
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Abstract
The utility model provides an expansion type liner hanger allowing well cementation. The expansion type liner hanger comprises an expansion pipe, a center pipe and a cementing rubber plug; the lower end of the expansion pipe is connected with a liner variable buckle; the center pipe is arranged in the expansion pipe in a penetrating mode; the lower end of the center pipe is connected with an expansion cone seat; an expansion cone sleeves the expansion cone seat; the lower end of the expansion cone seat is connected with an expansion cone locking claw; the cementing rubber plug is connected with the lower end of the expansion cone locking claw; the cementing rubber plug is arranged in the liner variable buckle in a penetrating mode. According to the expansion type liner hanger allowing the well cementation, the expansion cone and the expansion pipe can be effectively sealed due to the expansion cone seat and accordingly the pollution to the working surface of the expansion cone in the process of cement squeezing and displacement of the well cementation can be avoided.
Description
Technical field
The utility model has about a kind of extension hanger, especially has the cemented the well buckling type tail pipe hanger of applying about in a kind of petroleum industry field.
Background technology
Bulged tube technology is the new technology being surging forward in recent years, and it can be applicable to the operation process such as drilling well, completion and oil recovery, well workover.Expandable casing patching technology is very ripe at present, and buckling type tail pipe hanger, as the new application structure of one of bulged tube technology, is faced with complex hole condition and construction technology that a lot of expandable casing patchings do not face.
First, in liner completion process, expansion type hanger is by bore hole and former sleeve pipe separate sealed, hanger is arranged in former sleeve pipe, but face bore hole working environment, because the expansion of expansion tube is an accurate process, between expansion cone and expansion tube, have meticulous coordinating, in well cementing process, mud and displacement fluid can flow into expansion type hanger inside, and the interoperation of each structural member in expansion tube is exerted an influence.
Secondly, because hanger appearance and size is larger, and between former sleeve pipe, annular space is less, and there are several layers of rubber ring to form throttle effect, hanger there will be instantaneous high pressure in well cementation squeeze method process, can cause completion tail pipe not complete squeeze method, and hanger has started the problem expanding.
Have, because completion tubular column is very long, need movable tubing string being lowered in process and well cementing process, to guarantee cementing quality, existing expansion type hanger does not have rotatable function.
Therefore, be necessary to provide a kind of new hanger, overcome above-mentioned defect.
Utility model content
The purpose of this utility model is to provide the one buckling type tail pipe hanger of can cementing the well, and it is swollen cone seat can the swollen cone of effective sealing and expansion tube, and the situation of polluting swollen cone work plane in can avoid cementing the well squeeze method and displacement process occurs.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides the one buckling type tail pipe hanger of can cementing the well, and the described buckling type tail pipe hanger of cementing the well comprises:
Expansion tube, its lower end is connected with tail pipe variable buckle;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone seat, and the outside of described swollen cone seat is arranged with swollen cone, and the lower end of described swollen cone seat is connected with swollen cone locking jaw;
Cementing plug, it is connected to the lower end of described swollen cone locking jaw, and described cementing plug is located in described tail pipe variable buckle.
In a preferred embodiment, between described cementing plug and described swollen cone locking jaw, be connected by shear pin.
In a preferred embodiment, the lower end of described expansion tube is connected with two public variable buckles, and described two public variable buckles are connected with described tail pipe variable buckle.
In a preferred embodiment, the inside wall of described two public variable buckles radially inwardly convexes with multiple splines, the lateral wall of described swollen cone locking jaw radially outward convexes with multiple locking projections, described swollen cone locking jaw is located in described two public variable buckle, and described spline is embedded between two between described locking projection.
In a preferred embodiment, between described central tube and described expansion tube, be provided with dust ring.
In a preferred embodiment, the upper end of described central tube is connected with drill pipe nipple, and it is female that the outside of described drill pipe nipple is connected with the expansion tube back of the body, and the upper end contact of described expansion tube is on described expansion tube back of the body mother.
In a preferred embodiment, the outside of described swollen cone seat convexes with joint ring, and described joint ring contacts with the inside wall sealing of described expansion tube, and described swollen cone is positioned at the upper end of described joint ring.
In a preferred embodiment, between described joint ring and described expansion tube, be provided with multiple sealing rings.
In a preferred embodiment, between described swollen cone and described expansion tube, be provided with multiple sealing rings.
Feature and the advantage of the buckling type tail pipe hanger of cementing the well of the present utility model are: be convexly equipped with the joint ring of swollen cone seat lateral wall can the swollen cone of effective sealing and expansion tube between fitting face, the situation of polluting swollen cone work plane in avoid cementing the well squeeze method and displacement process occurs; Be connected to the cementing plug of swollen cone locking jaw lower end by shear pin, the squeeze method that do not complete that can effectively avoid the instantaneous pressure of squeeze method process generation to cause starts the problem expanding; In addition, multiple locking projections of swollen cone locking jaw are embedded location by multiple splines of two public variable buckles, after can cementing the well in buckling type tail pipe hanger lower going-into-well, according to the rotatable well cementation tubing string of need of work, the buckling type tail pipe hanger that prevents from cementing the well is gone into the well in process, cause tubing string can not be lowered to smoothly the problem in precalculated position because tubing string is long, to improve cementing quality.The buckling type tail pipe hanger of cementing the well of the present utility model, is combined hanger with well cementation tubing string, its construction technology is simple.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the buckling type tail pipe hanger of cementing the well of the present utility model.
Fig. 2 is the structural representation of the swollen cone locking jaw of the buckling type tail pipe hanger of cementing the well of the present utility model.
Fig. 3 is the structural representation that putting into of the buckling type tail pipe hanger of cementing the well of the present utility model suppressed plug.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides the one buckling type tail pipe hanger of can cementing the well, and it comprises expansion tube 1, central tube 2 and cementing plug 3, wherein: the lower end of expansion tube 1 is connected with tail pipe variable buckle 4; Central tube 2 is located in described expansion tube 1, and the lower end of described central tube 2 is connected with swollen cone seat 21, and the outside of described swollen cone seat 21 is arranged with swollen cone 22, and the lower end of described swollen cone seat 21 is connected with swollen cone locking jaw 23; Cementing plug 3 is connected to the lower end of described swollen cone locking jaw 23, and described cementing plug 3 is located in described tail pipe variable buckle 4.
Specifically, expansion tube 1 is cylindrical tube substantially, and its lower end is connected with tail pipe variable buckle 4, and this tail pipe variable buckle 4 is for being connected with tail pipe tubing string.In the utility model, between expansion tube 1 and tail pipe variable buckle 4, be connected with two public variable buckles 5, the upper end outside screw of two public variable buckles 5 is connected to the inner side, lower end of expansion tube 1, the lower end outside screw of two public variable buckles 5 is connected to the inner side, upper end of tail pipe variable buckle 4, the inside wall of this pair of public variable buckle 5 radially inwardly convexes with multiple splines 51, and those splines 51 uniformly-spaced arrange along the circumferencial direction of the inside wall of two public variable buckles 5.
Central tube 2 is cylindrical tube substantially, its upper end outside screw is connected with drill pipe nipple 6, this drill pipe nipple 6 is for being connected with drilling rod tubing string, the lower end outside screw of drill pipe nipple 6 is connected with the expansion tube back of the body female 61, when central tube 2 be located in expansion tube 1 interior after, the upper end contact of expansion tube 1 is on this expansion tube back of the body female 61.
The upper end outside screw of swollen cone seat 21 is connected to the inner side, lower end of central tube 2, in the utility model, the lateral wall of swollen cone seat 21 radially outward convexes with joint ring 211, sealing ring 211 contacts with the inside wall sealing of expansion tube 1, be set in the swollen cone 22 lower end contacts in swollen cone seat 21 outsides in the upper end of sealing ring 211, the upper end contact of swollen cone 22 is in the lower end of central tube 2.
Shown in Fig. 2, the upper end inside thread of swollen cone locking jaw 23 is connected to the outside, lower end of swollen cone seat 21, in the utility model, the lateral wall of swollen cone locking jaw 23 radially outward convexes with multiple locking projections 231, and those locking projections 231 uniformly-spaced arrange along the circumferencial direction of the lateral wall of swollen cone locking jaw 23; Further, the lower end of swollen cone locking jaw 23 has multiple spaced locking jaws 232, the lower end of each locking jaw 232 radially outward convexes with fin 233, swollen cone locking jaw 23 be located in two public variable buckles 5 interior after, the spline 51 of two public variable buckles 5 is embedded between the projection of locking between two 231 of swollen cone locking jaw 23, and multiple fins 233 of swollen cone locking jaw 23 lower ends are fastened on the lower end of two public variable buckles 5; In the utility model, between swollen cone locking jaw 23 and two public variable buckle 5, be formed with overcurrent circuit 52, this overcurrent circuit 52 is connected with the annular space 212 between swollen swollen cone seat 21 outer walls and expansion tube 1 of boring seat 21 joint ring 211 bottoms.
The upper end of cementing plug 3 is connected to by shear pin 31 on the fin 233 of swollen cone locking jaw 23 lower ends, and its outside, lower end is arranged with jaw 32, and cementing plug 3 is worn and is sealed in tail pipe variable buckle 4 by its jaw 32.
The course of work of this buckling type tail pipe hanger of can cementing the well is as follows: shown in Figure 3, first, the buckling type tail pipe hanger of can cementing the well is connected to the upper end of tail pipe tubing string, drilling rod tubing string is connected to the upper end of the buckling type tail pipe hanger of can cementing the well, afterwards precalculated position under lower going-into-well; Now, circulating mud, squeeze method, and be lowered to and suppress plug 9 from well head, suppresses plug 9 from entering in the central tube 2 of the buckling type tail pipe hanger of can cementing the well and setting in cementing plug 3; Then, suppress from well head water filling, under the effect of water injection pressure, suppressing plug 9 drives cementing plug 3 axially to move down, when water injection pressure reaches after certain value, the shear pin 31 being connected between cementing plug 3 and swollen cone locking jaw 23 is cut off, and suppresses plug 9 and together falls in tail pipe tubing string with cementing plug 3, completes well cementation; Now, continue from well head water filling, along with the increase of water injection pressure, injected water flows into the overcurrent circuit 52 between swollen cone locking jaw 23 lower ends and two public variable buckle 5 annular space 212 between swollen cone seat 21 and expansion tube 1, under the effect of the water injection pressure constantly increasing, swollen cone seat 21 axially moves up, thereby the card that drives swollen cone locking jaw 23 to throw off two public variable buckles 5 lower ends is established and moved axially, now swollen cone seat 21 drives swollen cone 22 on it to move on axially, to realize the object of expansion expansion tube 1.
The buckling type tail pipe hanger of cementing the well of the present utility model, be convexly equipped with the joint ring 211 of swollen cone seat 21 lateral walls can the swollen cone 22 of effective sealing with expansion tube 1 between fitting face, the situation generation of polluting swollen cone work plane in avoid cementing the well squeeze method and displacement process; Be connected to the cementing plug 3 of swollen cone locking jaw 23 lower ends by shear pin 31, the squeeze method that do not complete that can effectively avoid the instantaneous pressure of squeeze method process generation to cause starts the problem expanding; In addition, multiple locking projections 231 of swollen cone locking jaw 23 are embedded location by multiple splines 51 of two public variable buckles 5, after can cementing the well in buckling type tail pipe hanger lower going-into-well, according to the rotatable well cementation tubing string of need of work, the buckling type tail pipe hanger that prevents from cementing the well is gone into the well in process, cause tubing string can not be lowered to smoothly the problem in precalculated position because tubing string is long, to improve cementing quality.The buckling type tail pipe hanger of cementing the well of the present utility model, is combined hanger with well cementation tubing string, its construction technology is simple.
According to an embodiment of the present utility model, between described central tube 2 and described expansion tube 1, be provided with dust ring 7.This dust ring 7 enters in expansion tube 1 for impurity such as mode dusts, and pollutes expansion tube inwall.
According to an embodiment of the present utility model, between described joint ring 211 and described expansion tube 1, be respectively equipped with multiple sealing rings 8 between described swollen cone 22 and described expansion tube 1.The gap of those sealing rings 8 for sealing between joint ring 211 and expansion tube 1, between swollen cone 22 and expansion tube 1, prevents from polluting in cementing concrete and displacement process swollen cone 22 work planes.
The foregoing is only several embodiment of the present utility model, those skilled in the art can carry out various changes or modification and not depart from spirit and scope of the present utility model the utility model embodiment according to the disclosed content of application documents.
Claims (9)
1. the buckling type tail pipe hanger of can cementing the well, is characterized in that, the described buckling type tail pipe hanger of cementing the well comprises:
Expansion tube, its lower end is connected with tail pipe variable buckle;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone seat, and the outside of described swollen cone seat is arranged with swollen cone, and the lower end of described swollen cone seat is connected with swollen cone locking jaw;
Cementing plug, it is connected to the lower end of described swollen cone locking jaw, and described cementing plug is located in described tail pipe variable buckle.
2. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described cementing plug and described swollen cone locking jaw, is connected by shear pin.
3. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the lower end of described expansion tube is connected with two public variable buckles, and described two public variable buckles are connected with described tail pipe variable buckle.
4. the buckling type tail pipe hanger of cementing the well as claimed in claim 3, it is characterized in that, the inside wall of described two public variable buckles radially inwardly convexes with multiple splines, the lateral wall of described swollen cone locking jaw radially outward convexes with multiple locking projections, described swollen cone locking jaw is located in described two public variable buckle, and described spline is embedded between two between described locking projection.
5. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described central tube and described expansion tube, is provided with dust ring.
6. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the upper end of described central tube is connected with drill pipe nipple, and it is female that the outside of described drill pipe nipple is connected with the expansion tube back of the body, and the upper end contact of described expansion tube is on described expansion tube back of the body mother.
7. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, the outside of described swollen cone seat convexes with joint ring, and described joint ring contacts with the inside wall sealing of described expansion tube, and described swollen cone is positioned at the upper end of described joint ring.
8. the buckling type tail pipe hanger of cementing the well as claimed in claim 7, is characterized in that, between described joint ring and described expansion tube, is provided with multiple sealing rings.
9. the buckling type tail pipe hanger of cementing the well as claimed in claim 1, is characterized in that, between described swollen cone and described expansion tube, is provided with multiple sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004238.7U CN203729925U (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger allowing well cementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420004238.7U CN203729925U (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger allowing well cementation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729925U true CN203729925U (en) | 2014-07-23 |
Family
ID=51200005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420004238.7U Withdrawn - After Issue CN203729925U (en) | 2014-01-03 | 2014-01-03 | Expansion type liner hanger allowing well cementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729925U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Well-cementing-supportive expansion-type drilling liner hanger |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A kind of expansion tube tripping in device |
-
2014
- 2014-01-03 CN CN201420004238.7U patent/CN203729925U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790533A (en) * | 2014-01-03 | 2014-05-14 | 中国石油天然气股份有限公司 | Well-cementing-supportive expansion-type drilling liner hanger |
| CN103790533B (en) * | 2014-01-03 | 2016-08-17 | 中国石油天然气股份有限公司 | Can cement the well buckling type tail pipe hanger |
| CN109736733A (en) * | 2019-02-01 | 2019-05-10 | 中国地质科学院勘探技术研究所 | A kind of expansion tube tripping in device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |