CN201351467Y - Auto-excitation type slip hanger - Google Patents
Auto-excitation type slip hanger Download PDFInfo
- Publication number
- CN201351467Y CN201351467Y CNU2009200182235U CN200920018223U CN201351467Y CN 201351467 Y CN201351467 Y CN 201351467Y CN U2009200182235 U CNU2009200182235 U CN U2009200182235U CN 200920018223 U CN200920018223 U CN 200920018223U CN 201351467 Y CN201351467 Y CN 201351467Y
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- slips
- slip spider
- slip
- excitation type
- hanger
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Abstract
The utility model discloses an auto-excitation type slip hanger which can depend on an annular space between a suspension sleeve and a sealing sleeve and a sleeve head body in oil boring well cementing operation, and comprises a slip device used for receiving gravity of the sleeve, a slip seat device used for supporting gravity of the sleeve and a sealing device which is clamped between the slip device and the slip seat device, wherein the slip device is movably installed on the slip seat device. The auto-excitation type slip hanger has simple structure, easy manufacture, simple installment, reliable suspension and excellent sealing effect.
Description
Technical field
The utility model relates to a kind of slips hanger, and this hanger is parts in the casing head, is used for suspension sleeve weight and the annular space between sleeve pipe and the casing head body is sealed.
Background technology
In the oil drilling well cementing operation, casing head is mainly used in the well head that fixedly creeps into well, connects the down-hole casing post, and the annular space between sealing and control valve is the vitals of oil field oil recovery (gas) wellhead assembly reliably.Slips hanger is the vitals in the casing head, and its effect is suspension sleeve weight and the annular space between sleeve pipe and the casing head body sealed.
Now the slips hanger that uses mainly by two halves formula base, be installed in the two halves formula slip spider on the base, elastic seal ring and the sheathed slips that is installed in the slip spider that is installed between base and the slip spider formed, the structure more complicated of this hanger, higher to manufacturing process and installation specification.Wherein, be provided with L shaped protrusion means on the upper surface of base, be provided with L shaped groove on the lower end surface of slip spider, being connected of base and slip spider is to rely on both rotation that L shaped protrusion means is combined with L shaped groove to realize.Because the influence of factors such as condition of work and environment, thereby the motionless phenomenon influence of base and slip spider rotation very easily takes place during installation to be used, when base and slip spider rotation, very easily make elastic seal ring distortion between the two simultaneously, cause the hanger sealing unreliable, and on the base of hanger and slip spider L shaped protrusion means of processing and L shaped groove, complex process, processing and manufacturing cost height.
The utility model content
Technical problem to be solved in the utility model provides a kind of automatic excitation type slips hanger, and this hanger is simple in structure, easy for installation and suspension is reliable, good sealing effect.
For solving the problems of the technologies described above, the technical solution of the utility model is: automatic excitation type slips hanger comprises the slip system that is used to accept sleeve pipe gravity; The slip spider device that is used for supporting sleeve gravity, described slip system are movably installed on the described slip spider device; Sealing device, described sealing device cramping is between described slip system and described slip spider device.
As a kind of optimized technical scheme, described sealing device comprises elastic seal ring.
As a kind of optimized technical scheme, described slip system comprises slips body and last trim ring, is provided with linkage between described slips body and the last trim ring; Described slip spider device comprises slip spider body and lower clamping ring; Described slips body is sheathed on the inside of described slip spider body, has the gap of moving axially between described slips body and the described slip spider body; Described elastic seal ring cramping is gone up between trim ring and the described lower clamping ring in described.
As a kind of optimized technical scheme, described linkage comprises threaded connector, and described going up on trim ring, elastic seal ring and the lower clamping ring is respectively equipped with through hole, and described threaded connector passes described through hole.
As a kind of optimized technical scheme, described slips body is provided with a stressed protruding circle.
As a kind of optimized technical scheme, the fitting surface of described slip spider body and described slips body is stepped.
As a kind of optimized technical scheme, described slips body, described trim ring, described slip spider body, described lower clamping ring and the described elastic seal ring gone up are two halves formula structure, are provided with the sidepiece connector between the two and half slip spider bodies.
After having adopted technique scheme, the beneficial effects of the utility model are:
1. simple in structure, easily processing, the convenient installation.Automatic excitation type slips hanger comprises slip system, slip spider device and the cramping sealing device between slip system and slip spider device, the slip spider device comprises the slip spider body and is positioned at the lower clamping ring of slip spider body top, slip system comprises the last trim ring that is sheathed on the intrinsic slips body of slip spider and is positioned at the lower clamping ring top, elastic device comprises the elastic seal ring of cramping between last trim ring and lower clamping ring, and last trim ring passes elastic seal ring by threaded connector and is connected with the slips body with lower clamping ring.The overall structure of hanger is simple, and each parts is easily processed, and greatly reduces processing cost.During installation, at first, two halves formula slips body, slip spider body are buckled on the sleeve pipe, with the sidepiece connector slip spider body is connected, then, lower clamping ring, elastic seal ring and last trim ring are installed successively on top, use threaded connector to be connected then and get final product, install very easy with the slips body.
2. hang reliable.Because on the slips body, be provided with a stressed protruding circle, in the hanger through hole, form a support level, cannula tip is stuck on this support level with the bottom of the box cupling that connects well joint junction during installation, while slips body chucking sleeve pipe, double shield.
3. good sealing effect.Slip spider body and slips body fitting surface are stepped, has the gap of moving axially between two fitting surfaces, the slips body is accepted behind the sleeve pipe gravity relatively, and the slip spider body excites downward generation displacement automatically, driving upward by threaded connector simultaneously, trim ring moves down, and slip spider body and lower clamping ring form rigid support to elastic seal ring, so the elastic seal ring between last trim ring and lower clamping ring is subjected to uniform extruding force, the elastic seal ring dilatancy has been guaranteed sealing effectiveness.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the working state figure of the utility model embodiment;
Wherein: 1. slip spider body, 11. lower clamping rings, 2. slips body, trim ring on 21., 22. stressed protruding circles, 3. elastic seal ring 4. moves axially the gap, 5. threaded connector, 6. the casing head body 7. connects the well joint, 8. box cupling, 9. sleeve pipe.
The specific embodiment
As shown in Figure 1, a kind of automatic excitation type slips hanger, comprise that being used to accept sleeve pipe 9 gravity excites generation to the slip system of bottom offset, the slip spider device that is used for supporting sleeve 9 gravity and the sealing device of cramping between slip system and slip spider device automatically, wherein, slip system is movably installed on the slip spider device.
The slip spider device comprises slip spider body 1 and is positioned at the lower clamping ring 11 of slip spider body 1 top, slip system comprises slips body 2 that is sheathed in the slip spider body 1 and the last trim ring 21 that is positioned at lower clamping ring 11 tops, sealing device comprises elastic seal ring 3, elastic seal ring 3 crampings are between last trim ring 21 and lower clamping ring 11, and slip spider body 1, lower clamping ring 11, slips body 2, last trim ring 21 and elastic seal ring 3 are two halves formula structure.Be respectively equipped with corresponding through hole on last trim ring 21, elastic seal ring 3 and lower clamping ring 11, last trim ring 21 passes this through hole by linkage and is connected with slips body 2, and linkage is specially threaded connector 5.Be provided with the sidepiece connector between two and half slip spider bodies 1, the sidepiece connector is specially the sidepiece inner bolt.The overall structure of hanger is simple, and each parts is easily processed, and greatly reduces processing cost.
Slip spider body 1 is stepped with the fitting surface of slips body 2, has the gap of moving axially 4 between two fitting surfaces, therefore after slips body 2 is accepted sleeve pipe gravity relatively slip spider body 1 excite generation to bottom offset automatically.On slips body 2, be provided with a stressed protruding circle 22, in the hanger through hole, form a support level 22.
Shown in Fig. 1 and Fig. 2 are common, during installation, two halves slips body 2, slip spider body 1 are buckled in the bottom of Lian Jing joint 7 box cuplings 8 that link to each other with sleeve pipe 9, from the side slip spider body 1 is locked with the sidepiece inner bolt.This moment, the bottom margin of box cupling 8 was stuck on the support level 22 of slips body 2, and the inside draw-in groove chucking sleeve pipe 9 of slips body 2 forms double shield simultaneously, and suspension sleeve 9 reliably.Lower clamping ring 11, elastic seal ring 3 and last trim ring 22 are installed above slip spider body 1 and slips body 2 more in order, with threaded connector 5 trim ring 21, elastic seal ring 3 and lower clamping ring 11 are connected with slips body 2 then.Installation process is very easy, need not higher technical requirements.
Hanger is after casing head body 6 inside are in place, and slip spider body 1 external mounting face and casing head body 6 interior bone places cascaded surfaces are fitted.Relative slip spider body 1 excited downward generation displacement automatically after slips body 2 was accepted sleeve pipe 9 gravity, driving upward by threaded connector 5 simultaneously, trim ring 21 moves down, and 11 pairs of elastic seal rings of slip spider body 1 and lower clamping ring 3 form rigid support, elastic seal ring 3 between last trim ring 21 and lower clamping ring 11 is subjected to uniform extruding force, elastic seal ring 3 dilatancies, guaranteed sealing effectiveness, thus the annular space between positiver sealing sleeve pipe 9 cylindricals and casing head body 6 endoporus.
The foregoing description only is giving an example of the utility model specific embodiment; protection domain of the present utility model is as the criterion with the content of claim; any equivalent transformation that carries out based on technology enlightenment of the present utility model is also within protection domain of the present utility model.
Claims (7)
1. automatic excitation type slips hanger is characterized in that: comprise
Be used to accept the slip system of sleeve pipe gravity;
The slip spider device that is used for supporting sleeve gravity, described slip system are movably installed on the described slip spider device;
Sealing device, described sealing device cramping is between described slip system and described slip spider device.
2. automatic excitation type slips hanger as claimed in claim 1 is characterized in that: described sealing device comprises elastic seal ring.
3. automatic excitation type slips hanger as claimed in claim 2 is characterized in that:
Described slip system comprises slips body and last trim ring, is provided with linkage between described slips body and the last trim ring;
Described slip spider device comprises slip spider body and lower clamping ring;
Described slips body is sheathed on the inside of described slip spider body, has the gap of moving axially between described slips body and the described slip spider body;
Described elastic seal ring cramping is gone up between trim ring and the described lower clamping ring in described.
4. automatic excitation type slips hanger as claimed in claim 3, it is characterized in that: described linkage comprises threaded connector, described going up on trim ring, described elastic seal ring and the described lower clamping ring is respectively equipped with through hole, and described threaded connector passes described through hole.
5. automatic excitation type slips hanger as claimed in claim 3 is characterized in that: described slips body is provided with a stressed protruding circle.
6. automatic excitation type slips hanger as claimed in claim 3 is characterized in that: the fitting surface of described slip spider body and described slips body is stepped.
7. as described any automatic excitation type slips hanger of claim 2 to 6, it is characterized in that: described slips body, described trim ring, described slip spider body, described lower clamping ring and the described elastic seal ring gone up are two halves formula structure, are provided with the sidepiece connector between the two and half slip spider bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200182235U CN201351467Y (en) | 2009-01-16 | 2009-01-16 | Auto-excitation type slip hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200182235U CN201351467Y (en) | 2009-01-16 | 2009-01-16 | Auto-excitation type slip hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351467Y true CN201351467Y (en) | 2009-11-25 |
Family
ID=41374855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200182235U Expired - Fee Related CN201351467Y (en) | 2009-01-16 | 2009-01-16 | Auto-excitation type slip hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351467Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314512A (en) * | 2014-11-07 | 2015-01-28 | 杰瑞能源服务有限公司 | Wellhead wall-hook packer |
-
2009
- 2009-01-16 CN CNU2009200182235U patent/CN201351467Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314512A (en) * | 2014-11-07 | 2015-01-28 | 杰瑞能源服务有限公司 | Wellhead wall-hook packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20120116 |