CN204941435U - A kind of leather cup structure - Google Patents
A kind of leather cup structure Download PDFInfo
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- CN204941435U CN204941435U CN201520656304.3U CN201520656304U CN204941435U CN 204941435 U CN204941435 U CN 204941435U CN 201520656304 U CN201520656304 U CN 201520656304U CN 204941435 U CN204941435 U CN 204941435U
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- leather cup
- periphery wall
- central tube
- cup structure
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Abstract
The utility model relates to a kind of leather cup structure, comprising: for being set in the central tube in sleeve pipe; Part is set in the leather cup on the periphery wall of described central tube, is configured with annular space between the periphery wall of described leather cup and the internal perisporium of described sleeve pipe; The locating part of play is there is vertically in the periphery wall being set in described central tube in order to limit described leather cup.This leather cup structure has under the environment of HTHP, can repeat press seal and not cracky, the life-span is long and reliability is high advantage, and also have after setting, can return to the advantage of reset condition.
Description
Technical field
The utility model relates to oil-gas mining technical field, particularly relates to a kind of leather cup structure.
Background technology
In oil-gas mining technical field, the overall sulfidization molding of conventional packer rubber bowl and end, structure is simple, is merely able to realize unidirectional pressure-bearing from bowl-shape opening direction.Like this, in hot environment, when this packer rubber bowl bears High Pressure Difference, the shoulder of packing element is easily squeezed in annular space to cause under differential pressure action to be torn, thus makes packing element lose the effect of sealing.In addition, because glue bowl is interference friction with casing wall to enter in well process all the time, once it is excessively dark to enter well, make the interference fraction time of glue bowl and casing wall can be longer, easily cause the destruction of glue bowl, make the application life of glue bowl shorter.
Based on the analysis to above-mentioned prior art, existing leather cup is entering in well process, owing to directly can touch the internal perisporium of pit shaft, thus there is problem easy to wear.
Utility model content
For the problems referred to above, according to the utility model proposes a kind of leather cup structure, comprising: for being set in the central tube in sleeve pipe; Part is set in the leather cup on the periphery wall of described central tube, is configured with annular space between the periphery wall of described leather cup and the internal perisporium of described sleeve pipe; The locating part of play is there is vertically in the periphery wall being set in described central tube in order to limit described leather cup.The external diameter of this leather cup is less than the internal diameter of sleeve pipe.Like this, enter in the process of well in this leather cup structure, because leather cup directly can not contact with the internal perisporium of sleeve pipe, avoiding problems the wearing and tearing to this leather cup, thus extend the application life of this leather cup.
Preferably, described leather cup comprises the Access Division on the periphery wall being set in described central tube, and the periphery wall of described Access Division is configured with annular groove.
Preferably, the internal perisporium of the first end of described locating part is configured with radially to projecting inward projection, described projection and described annular groove match.Like this, this locating part just serves and prevents this leather cup in the process entering well, can vertically towards the effect that well head direction is moved.
Preferably, described leather cup also comprises and being connected with described Access Division, and is set in the annular collar on the periphery wall of described central tube, is provided with the elastic component that described annular collar can be made radially to protrude laggard horizontal reset in the internal sleeve of described annular collar.The setting of this elastic component, is setting under state, can play and avoid annular collar to extrude the phenomenon of tearing when being subject to larger axial force.
Preferably, described leather cup also comprises the elastic portion be connected with described annular collar, is configured with first fluid passage between the internal perisporium of described elastic portion and the periphery wall of described central tube.This first fluid passage can be used to fill liquid and contacts with the internal perisporium of sleeve pipe, to realize setting of leather cup to make this elastic portion to be radially expanded to.
Preferably, described elastic portion towards enter well direction end sidewall on be configured with inserting groove.
Preferably, described leather cup structure also comprises the circular connector matching with described inserting groove to prevent described elastic portion from radially expanding.The setting of this circular connector, can prevent elastic portion from radially expanding towards the end entering well direction.
Preferably, described leather cup structure also comprises one end and is connected with the internal perisporium of described circular connector, on the periphery wall that the other end is set in described central tube and be the overcurrent cover be tightly connected with the periphery wall of described central tube, be configured with second fluid passage between the internal perisporium of described overcurrent cover and the periphery wall of described central tube, described first fluid passage is connected to be configured to composite fluid passage with described second fluid passage.
Preferably, on the periphery wall that described overcurrent overlaps, circumferentially compartment is provided with multiple flowing hole, and each described flowing hole is all connected with described composite fluid passage.The setting of composite fluid passage, the convenient liquid carrying for entering into leather cup inside configuration is for runner.Like this, outside liquid just can be made to flow in composite fluid passage, to realize the object that this elastic portion is radially expanded through this flowing hole.
Preferably, described leather cup structure also comprises the sand control cover on the periphery wall being set in described overcurrent cover, and described sand control cover is configured with multiple through hole, and each described through hole is all connected with corresponding described flowing hole.The setting of this sand control cover, can play the effect of filter liquide, namely preventing the liquid entering into leather cup inside because causing sand body to pile up with sand body, making leather cup cannot return to the drawback of original state.
According to the utility model, this leather cup structure has under the environment of HTHP, can repeat press seal and not cracky, the life-span is long and reliability is high advantage, and also have after setting, can return to the advantage of reset condition.
Accompanying drawing explanation
Also will be described in more detail the utility model with reference to accompanying drawing based on embodiment hereinafter.In the drawings:
Fig. 1 is that the leather cup structure of the embodiment of the application is setting the structural representation under state.
Fig. 2 is the structural representation of leather cup structure under unset state of the embodiment of the application.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the scaling of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As depicted in figs. 1 and 2, Fig. 1 show schematically show this leather cup structure 100 and comprises central tube 1, leather cup 2 and locating part 3.
In the embodiment of the application, the inside of this central tube 1 is hollow, and entirety is tubulose.This central tube 1 is set in sleeve pipe 200.
On the periphery wall that this leather cup 2 is set in central tube 1 11, between the periphery wall 21 of this leather cup 2 and the internal perisporium 201 of sleeve pipe 200, be configured with annular space 202.Namely the external diameter impliedly disclosing this leather cup 2 is less than the internal diameter of sleeve pipe 200.Like this, enter in the process of well in this leather cup structure 100, because leather cup 2 directly can not contact with the internal perisporium 201 of sleeve pipe 200, avoiding problems the wearing and tearing to this leather cup 2, thus extend the application life of this leather cup 2.
Locating part 3 is set on the periphery wall 11 of central tube 1, vertically play occurs in order to limit this leather cup 2.Particularly, the setting of this locating part 3, can avoid leather cup structure 200 in the process entering well, owing to being subject to the impact of the factor such as gravity or vibrations, cause leather cup 2 vertically left (well head direction) there is the drawback of play.
In the embodiment of the application, the first seal groove (not shown) is had in the internal structure of this locating part 3, in sealing groove, seal is installed, thus the effect of sealing can be played, avoid outside liquid to enter into the inside of this leather cup 2 through this locating part 3.
As depicted in figs. 1 and 2, in a preferred embodiment, this leather cup 2 comprises the Access Division 22 be set on the periphery wall 11 of central tube 1, and the periphery wall 221 of this Access Division 22 is configured with annular groove 222.Wherein, this Access Division 22 roughly ringwise.In addition, this annular groove 222 is except being annular, as a non-limiting example, also multiple isolated groove (not shown) can be provided with on this periphery wall 221, like this, just make projection as described below 311 for multiple, and each protruding 311 all with corresponding groove phase clamping, namely each protruding 311 be all embedded in corresponding groove.
In a preferred embodiment, the internal perisporium of the first end 31 of locating part 3 is configured with radially to projecting inward projection 311, this projection 311 matches with annular groove 222.Meanwhile, protruding 311 are made to be integrated with groove 222 sulfuration by sulfuration process.Like this, this locating part 3 just serves and prevents this leather cup 2 in the process entering well, can vertically towards the effect that well head direction is moved.
In a preferred embodiment, this leather cup 2 also comprises and being connected with Access Division 22, and the annular collar 4 be set on the periphery wall 11 of central tube 1, the elastic component 41 that annular collar can be made radially to protrude laggard horizontal reset is provided with in the internal sleeve of annular collar 4.The thickness of this annular collar 4 is comparatively large, and thus, after packing element sets, this annular collar 4 has very high pressure-bearing and the ability of resistance to deformation, avoids this annular collar 4 when bearing axial pressure, because shoulder is damaged, causes the generation of seal failure phenomenon.
In addition, this elastic component 41 can be one or more, and the size of the axial force that can be subject to according to annular collar 4 at that time is specifically determined.The setting of this elastic component 41, is setting under state, can play and avoid annular collar 4 to extrude the phenomenon of tearing when being subject to larger axial force.In addition, under unset state, by the elastic restoring force of this elastic component 41, this annular collar 4 is radially inwardly shunk, returns to reset condition.In the embodiment of the application, this elastic component 41 can be helical spring or has other parts of elastic restoring force.
In the embodiment of the application, this leather cup 2 and annular collar 4 form by quality of rubber materials manufacture.
In a preferred embodiment, this leather cup 2 also comprises the elastic portion 23 be connected with annular collar 4, is configured with first fluid passage 5 between the internal perisporium of this elastic portion 23 and the periphery wall 11 of central tube 1.This first fluid passage 5 can be used to fill liquid and contacts with the internal perisporium 201 of sleeve pipe 200, to realize setting of leather cup 2 to make this elastic portion 23 to be radially expanded to.
In a preferred embodiment, this elastic portion 23 towards enter well direction end sidewall on be configured with inserting groove 231.
In a preferred embodiment, this leather cup structure 100 also comprises the circular connector 6 matching with inserting groove 231 to prevent elastic portion 23 from radially expanding.On the sidewall of well head direction (diagram level direction left), projection is configured with at this circular connector 6, be embedded in inserting groove 231 by making projection, and by sulfuration process, circular connector 6 and inserting groove 231 fluidisation are integrated.The setting of this circular connector 6, can prevent elastic portion 23 from radially expanding towards the end entering well direction.In the embodiment of the application, this circular connector 6 can be sulfuration head.
In a preferred embodiment, this leather cup structure 100 also comprises one end and is connected with the internal perisporium of circular connector 6, on the periphery wall 11 that the other end is set in central tube 1 and with the periphery wall 11 of central tube 1 for the overcurrent be tightly connected overlaps 7, second fluid passage 8 is configured with between the internal perisporium of this overcurrent cover 7 and the periphery wall 11 of central tube 1, this first fluid passage 5 is connected with second fluid passage 8, to be configured to composite fluid passage 81.Overlapping one end of 7 with the internal perisporium of circular connector 6 by making this overcurrent is detachable connection, thus facilitates this overcurrent to overlap installation and the dismounting of 7, and the mode of this detachable connection such as can be and is threaded.In addition, the other end of overcurrent cover 7 and the periphery wall 11 of central tube 1, for being tightly connected, can prevent outside liquid from entering through this place.Further, liquid is made can only to enter from flowing hole 71 as described below.The setting of composite fluid passage 81, the convenient liquid carrying for entering into leather cup structure 100 inside is for runner.
In a preferred embodiment, on the periphery wall of overcurrent cover 7, circumferentially compartment is provided with multiple flowing hole 71, and each flowing hole 71 is all connected with composite fluid passage 81.Like this, outside liquid just can be made to flow in composite fluid passage 81, to realize the object that this elastic portion 23 is radially expanded through this flowing hole 71.
In a preferred embodiment, this leather cup structure 100 also comprises the sand control cover 9 on the periphery wall being set in overcurrent cover 7, and sand control cover 9 is configured with multiple through hole 91, and each through hole 91 is all connected with corresponding flowing hole 71.This sand control cover 9 can be configured with through hole 91, also can be configured with multiple finedraw.The setting of this sand control cover 9, can play the effect of filter liquide, namely preventing the liquid entering into leather cup 2 inside because causing sand body to pile up with sand body, making leather cup 2 cannot return to the drawback of original state.
As depicted in figs. 1 and 2, according to first example of the present utility model, this leather cup structure 100 be in set state time, when namely this leather cup structure 100 is lowered in well along sleeve pipe 200, the outer wall of this leather cup structure 100 does not contact with the internal perisporium 201 of sleeve pipe 200.
After this leather cup structure 100 is lowered into the setting position of down-hole, by starting tubing string effect to the thrust of locating part 3 or circular connector 6 axis, and this thrust is passed on leather cup 2, thus make the annular collar 4 of this leather cup 2 go out because being squeezed, and radially expand, until part fits with the internal perisporium 201 of sleeve pipe 200.Now, liquid is entered by the through hole 91 on sand control cover 9, flow in composite fluid passage 81, thus enter into the inside of leather cup 2 after flowing through each flowing hole 71.Further, the self sealing action of conventional packer leather cup is played.
In above-mentioned tubing string effect to the effect of the thrust of locating part 3 or circular connector 6 axis, annular collar 4 and elastic component 41 can opening and open with leather cup 2, play and prevent leather cup 2 to be extruded the effect of tearing.
When this leather cup structure 100 needs deblocking, carry locating part 3 or overcurrent cover 7 directly, make leather cup 2 inside and the liquid being arranged in composite fluid passage 81 extrude, make leather cup 2 under the effect of elastic component 41, return to original position, thus realize the deblocking of packer.
In sum, this leather cup structure 100 has under the environment of HTHP, can repeat press seal and not cracky, the life-span is long and reliability is high advantage, and also have after swollen envelope, can return to the advantage of reset condition.
Although be described the utility model with reference to preferred embodiment, when not departing from scope of the present utility model, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The utility model is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (10)
1. a leather cup structure, is characterized in that, comprising:
For being set in the central tube in sleeve pipe;
Part is set in the leather cup on the periphery wall of described central tube, is configured with annular space between the periphery wall of described leather cup and the internal perisporium of described sleeve pipe;
The locating part of play is there is vertically in the periphery wall being set in described central tube in order to limit described leather cup.
2. leather cup structure according to claim 1, is characterized in that, described leather cup comprises the Access Division on the periphery wall being set in described central tube, and the periphery wall of described Access Division is configured with annular groove.
3. leather cup structure according to claim 2, is characterized in that, the internal perisporium of the first end of described locating part is configured with radially to projecting inward projection, and described projection and described annular groove match.
4. leather cup structure according to claim 2, it is characterized in that, described leather cup also comprises and to be connected with described Access Division and to be set in the annular collar on the periphery wall of described central tube, is provided with the elastic component that described annular collar can be made radially to protrude laggard horizontal reset in the internal sleeve of described annular collar.
5. leather cup structure according to claim 4, is characterized in that, described leather cup also comprises the elastic portion be connected with described annular collar, is configured with first fluid passage between the internal perisporium of described elastic portion and the periphery wall of described central tube.
6. leather cup structure according to claim 5, is characterized in that, described elastic portion towards enter well direction end sidewall on be configured with inserting groove.
7. leather cup structure according to claim 6, is characterized in that, described leather cup structure also comprises the circular connector matching with described inserting groove to prevent described elastic portion from radially expanding.
8. leather cup structure according to claim 7, it is characterized in that, described leather cup structure also comprises one end and is connected with the internal perisporium of described circular connector, on the periphery wall that the other end is set in described central tube and be the overcurrent cover be tightly connected with the periphery wall of described central tube, be configured with second fluid passage between the internal perisporium of described overcurrent cover and the periphery wall of described central tube, described first fluid passage is connected to be configured to composite fluid passage with described second fluid passage.
9. leather cup structure according to claim 8, is characterized in that, on the periphery wall that described overcurrent overlaps, circumferentially compartment is provided with multiple flowing hole, and each described flowing hole is all connected with described composite fluid passage.
10. leather cup structure according to claim 9, it is characterized in that, described leather cup structure also comprises the sand control cover on the periphery wall being set in described overcurrent cover, and described sand control cover is configured with multiple through hole, and each described through hole is all connected with corresponding described flowing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656304.3U CN204941435U (en) | 2015-08-27 | 2015-08-27 | A kind of leather cup structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520656304.3U CN204941435U (en) | 2015-08-27 | 2015-08-27 | A kind of leather cup structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941435U true CN204941435U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520656304.3U Active CN204941435U (en) | 2015-08-27 | 2015-08-27 | A kind of leather cup structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941435U (en) |
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2015
- 2015-08-27 CN CN201520656304.3U patent/CN204941435U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |