CN202132006U - Bottom ball seat of pressure down pipe backwashing well - Google Patents
Bottom ball seat of pressure down pipe backwashing well Download PDFInfo
- Publication number
- CN202132006U CN202132006U CN201120236036U CN201120236036U CN202132006U CN 202132006 U CN202132006 U CN 202132006U CN 201120236036 U CN201120236036 U CN 201120236036U CN 201120236036 U CN201120236036 U CN 201120236036U CN 202132006 U CN202132006 U CN 202132006U
- Authority
- CN
- China
- Prior art keywords
- valve base
- steel ball
- lever
- top connection
- torsion spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000011001 backwashing Methods 0.000 title abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000011010 flushing procedure Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to a bottom ball seat of a pressure down pipe backwashing well. An internal tapered thread is arranged at the upper end of an upper joint, an upper valve seat is arranged at the lower end of the upper joint, the sealing surface of the upper valve seat is in sealed fit with the upper part of a steel ball, a lower valve seat is connected at the lower end of the upper joint by an external thread, a sealing ring is arranged between the upper joint and the lower valve seat, a step hole is arranged at the center of the lower valve seat, a supporting seat ring is arranged between the upper end surface of the step hole and the lower end surface of the upper joint, at least two axial waist-shaped holes are symmetrically arranged on the wall of the supporting seat ring, pin shafts are arranged on the same cross section of the axial waist-shaped holes and respectively sheathed with a lever and a torsion spring, one end of the torsion spring presses against the supporting seat ring, the other end of the torsion spring presses against the lower part of the free end of the lever, and the upper part of the free end of the lever is pressed on the lower part of the steel ball so that the steel ball is clung onto the sealing surface of the upper valve seat. The bottom ball seat can be down with pressure, can prevent underground pressurized liquid from pouring out from a pipe, and also can realize forward and backward backwashing after normally working.
Description
Technical field
The utility model relates to a kind of oil pipe bottom ball seat, relates in particular to the polycrystalline substance setting that a kind of water injection well band is depressed the back-washable well of pipe, belongs to the oil well rig technical field.
Background technology
Depress in the pipe operation process at the water injection well band, the bottom must be in closed condition, otherwise the down-hole high pressure profit will be gushed out in managing.Traditional bottom ball socket structure is as shown in Figure 1; It is made up of housing a, lock nut b, upper valve base c, steel ball d, upper spring seat e, spring f, lower spring cup g; The top of housing a is provided with the top connection that is connected with external pipe, and this ball seat is installed in the oil pipe bottom, in following pipe process; Because steel ball d is in contact condition all the time under the effect of spring f, well inner high voltage liquid can't be gushed out in managing; But as toward the interior water under high pressure liquid that injects of pipe, steel ball d will compress spring f, and steel ball d will separate with valve body c, and liquid will pass through ball seat, injects into well.
There is following weak point in such ball seat: from now on as need the sand washing operation, can only take positive technology for washing well, promptly from oil pipe advance, sleeve pipe goes out.Promptly from the sleeve pipe water filling, oil pipe returns liquid to anti-flushing well technology, just can't carry out, and the workover treatment to has from now on caused limitation.
The utility model content
The purpose of the utility model is, overcomes the problem that exists in the prior art, provides a kind of band to depress the back-washable bottom ball seat of pipe, can satisfy the technological requirement of forward and reverse well-flushing simultaneously.
For solving above technical problem, a kind of band that the utility model provided is depressed the back-washable bottom ball seat of pipe, comprises top connection, upper valve base and as the steel ball of spool; The upper end of said top connection is provided with the inside tapered thread that is connected with external pipe; The lower end of said top connection is provided with said upper valve base, and the sealing surface of said upper valve base matches with the top of said steel ball and realizes sealing, and the lower end of said top connection is connected with lower valve base through external screw thread; The circle wall of said lower valve base is provided with permeable groove; Be provided with sealing ring between the said top connection periphery relative with said lower valve base, the center of said lower valve base is provided with stepped hole, is provided with the support seat ring between the upper surface of said stepped hole and the lower surface of said top connection; At least be arranged with two axial mounting holes on the circle wall of said support seat ring; Be separately installed with bearing pin on the same cross section of said axial mounting hole, be respectively installed with lever and torsion spring on the said bearing pin, an end of said torsion spring is resisted against on the said support seat ring; The other end is resisted against the free-ended below of said lever, and the bottom that the free-ended top of said lever is pressed in said steel ball is close on the sealing surface of said upper valve base steel ball.
With respect to prior art; The utility model has been obtained following beneficial effect: under the normal condition, because the tension force of torsion spring, the free end of lever is exerted pressure to the bottom of steel ball; Steel ball is close on the sealing surface of upper valve base, stops the down-hole to have press liquid in managing, to gush out.During the forward well-flushing, highly pressurised liquid gets into from the hole of top connection, and the tension force that forces steel ball to overcome torsion spring moves downward, and makes steel ball break away from the sealing surface of upper valve base, opens flow channel, and water under high pressure can be to shaft bottom forward well-flushing; Steel ball continues to move downward, and lever is done the rotation of contrary torsion spring torsion direction, and when the lever free ends of two symmetries rotate to can not hinder steel ball and continue to move downward the time, steel ball slides and fall into lower valve base.During reverse well-flushing; Owing on the support seat ring, be provided with the lever that receives the torsion spring effect; After steel ball slipped in the lower valve base, lever was returned to original state under the effect of torsion spring, so lever will stop steel ball to receive reverse water pressure and continues to move upward; Thereby make steel ball can't hinder the sealing surface that blocks up upper valve base, so its backward channel is unblocked.The utlity model has simple and reasonable, band and depress pipe and can prevent that the down-hole from having press liquid in managing, to gush out, after the operate as normal, also can realize the advantage of forward and reverse well-flushing.
As the preferred version of the utility model, the lower port of said lower valve base is provided with blind plate, and said blind plate is provided with permeable hole.Steel ball slides falling in the blind hole.
Description of drawings
Fig. 1 is the structural representation of bottom ball seat in the prior art
Fig. 2 depresses the structural representation of the back-washable bottom ball seat of pipe for the utility model band.
Among the figure: a housing, b lock nut, c upper valve base, d steel ball, e upper spring seat, f spring, g lower spring cup, 1 top connection, 2 steel balls, 3 sealing rings, 4 support seat ring, the axial mounting hole of 4a, 5 levers, 6 bearing pins, 7 torsion springs, 8 lower valve bases, the permeable groove of 8a, 9 upper valve bases, 10 blind plates, 10a permeable hole.
The specific embodiment
As shown in Figure 2; The band of the utility model is depressed the back-washable bottom ball seat of pipe, comprises top connection 1, upper valve base 9 and as the steel ball 2 of spool, the upper end of top connection 1 is provided with the inside tapered thread that is connected with external pipe; The lower end of top connection 1 is shunk to endoporus and is formed upper valve base 9; The sealing surface of upper valve base 9 matches with the top of steel ball 2 and realizes sealing, and the lower end of top connection 1 is connected with lower valve base 8 through external screw thread, and the circle wall of lower valve base 8 is provided with permeable groove 8a; The lower port of lower valve base 8 is provided with blind plate 10, and blind plate 10 is provided with permeable hole 10a.Be provided with sealing ring 3 between the relative periphery of top connection 1 and lower valve base 8; The center of lower valve base 8 is provided with stepped hole; Be provided with between the lower surface of the upper surface of stepped hole and top connection 1 and support seat ring 4, be arranged with two axial mounting hole 4a at least on the circle wall of support seat ring 4, axially be separately installed with bearing pin 6 on the same cross section of mounting hole 4a; Be respectively installed with lever 5 and torsion spring 7 on the bearing pin 6; One end of torsion spring 7 is resisted against and supports on the seat ring 4, and the other end is resisted against the free-ended below of lever 5, and the bottom that the free-ended top of lever 5 is pressed in steel ball 2 is close on the sealing surface of upper valve base 9 steel ball.
Under the normal condition, because the tension force of torsion spring 7, the free end of lever 5 is exerted pressure to the bottom of steel ball 2, and steel ball 2 is close on the sealing surface of upper valve base 9, stops the down-hole to have press liquid in managing, to gush out.During the forward well-flushing, highly pressurised liquid gets into from the hole of top connection 1, and the tension force that forces steel ball 2 to overcome torsion spring 7 moves downward, and makes steel ball 2 break away from the sealing surface of upper valve base 9, opens flow channel, and water under high pressure can be to shaft bottom forward well-flushing; Steel ball 2 continues to move downward, and lever 5 is done the rotation of contrary torsion spring 7 torsion directions, and when the lever free ends of two symmetries rotate to can not hinder steel ball 2 and continue to move downward the time, steel ball 2 slides and fall into the blind hole of lower valve base 8.During reverse well-flushing; Owing on support seat ring 4, be provided with the lever 5 that receives torsion spring 7 effects; After steel ball 2 slipped in the blind hole of lower valve base 8, lever 5 was returned to original state under the effect of torsion spring 7, so lever 5 will stop steel ball 2 to receive reverse water pressure and continues to move upward; Thereby make steel ball 2 can't hinder the sealing surface that blocks up upper valve base 9, so its backward channel is unblocked.The utlity model has simple and reasonable, band and depress pipe and can prevent that the down-hole from having press liquid in managing, to gush out, after the operate as normal, also can realize the advantage of forward and reverse well-flushing.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (2)
1. a band is depressed the back-washable bottom ball seat of pipe; Comprise top connection, upper valve base and as the steel ball of spool, the upper end of said top connection is provided with the inside tapered thread that is connected with external pipe, the lower end of said top connection is provided with said upper valve base; The sealing surface of said upper valve base matches with the top of said steel ball and realizes sealing; It is characterized in that: the lower end of said top connection is connected with lower valve base through external screw thread, and the circle wall of said lower valve base is provided with permeable groove, is provided with sealing ring between the said top connection periphery relative with said lower valve base; The center of said lower valve base is provided with stepped hole; Be provided with the support seat ring between the upper surface of said stepped hole and the lower surface of said top connection, be arranged with two axial mounting holes on the circle wall of said support seat ring at least, be separately installed with bearing pin on the same cross section of said axial mounting hole; Be respectively installed with lever and torsion spring on the said bearing pin; One end of said torsion spring is resisted against on the said support seat ring, and the other end is resisted against the free-ended below of said lever, and the bottom that the free-ended top of said lever is pressed in said steel ball is close on the sealing surface of said upper valve base steel ball.
2. band according to claim 1 is depressed the back-washable bottom ball seat of pipe, and it is characterized in that: the lower port of said lower valve base is provided with blind plate, and said blind plate is provided with permeable hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120236036U CN202132006U (en) | 2011-07-06 | 2011-07-06 | Bottom ball seat of pressure down pipe backwashing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120236036U CN202132006U (en) | 2011-07-06 | 2011-07-06 | Bottom ball seat of pressure down pipe backwashing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132006U true CN202132006U (en) | 2012-02-01 |
Family
ID=45520779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120236036U Expired - Fee Related CN202132006U (en) | 2011-07-06 | 2011-07-06 | Bottom ball seat of pressure down pipe backwashing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086932A (en) * | 2018-01-23 | 2018-05-29 | 东营百华石油技术开发有限公司 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
-
2011
- 2011-07-06 CN CN201120236036U patent/CN202132006U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086932A (en) * | 2018-01-23 | 2018-05-29 | 东营百华石油技术开发有限公司 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangsu province Yangzhou City Wenhui Road 225009 No. 1 Co-patentee after: Jiangsu oil field Mining Development Co., Ltd. Patentee after: China Petrochemical Group Corp. Address before: Jiangsu province Yangzhou City Wenhui Road 225009 No. 1 Co-patentee before: Jiangsu Oilfield Mining Dvelopment General Co.,Ltd. Patentee before: China Petrochemical Group Corp. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20200706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |