CN201050326Y - Rotary type oil pipe high pressure plugging device - Google Patents
Rotary type oil pipe high pressure plugging device Download PDFInfo
- Publication number
- CN201050326Y CN201050326Y CNU2007200123045U CN200720012304U CN201050326Y CN 201050326 Y CN201050326 Y CN 201050326Y CN U2007200123045 U CNU2007200123045 U CN U2007200123045U CN 200720012304 U CN200720012304 U CN 200720012304U CN 201050326 Y CN201050326 Y CN 201050326Y
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- China
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- centerbody
- high pressure
- central body
- plugging device
- oil pipe
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- Expired - Fee Related
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Abstract
The utility model relates to an occluder for the tubing plugging in the maintenance operation with pressure of high pressure oil and gas wells, in particular to a rotary high pressure tubing occluder, which is composed of a central body, an attrition body, an upper cone and an lower cone. Between the upper and lower cones, the bi-directional slips matched each other through the conical surfaces are provided. The central body is connected to a sealing mechanism through a screw thread. When in use, the attrition is supported inside the tubing. Through the rotation of the central body, the slips are pushed to open through the upper and lower cones. Afterwards, the central body is continuously rotated, so that the anchoring and plugging of the sealing mechanism for a tubing cavity is achieved. The central body is in reverse rotation in de-blocking. The device is reliable in rotation with excellent air-tightness. Because the two-way anchoring is adopted for the equilibrium condition of forces in the utility model, the sealing is reliable. Therefore, the utility model can be widely applied in the well head valve maintenance in the production of oil and gas wells.
Description
Technical field:
The plugging device of using when the utility model relates to high-pressure oil gas well servicing Operating Pressure shutoff oil pipe, especially a kind of rotary oil pipe high pressure plugging device.
Background technology:
In oil gas well manufacturing process, exist under the situation of pressure at oil well especially, if will change, accessories such as maintenance head valve, flange must be with the band hydraulic fluid shutoff in the well.At present, plugging device commonly used generally takes hydraulic pressure or handling mode to set, because hydraulic pressure plugging device, realize that the higher and handling of the conditional request of security seal often is subjected to the flexible influence of oil pipe when setting, often cause the shutoff failure, and rotary oil pipe high pressure plugging device can be realized shutoff, success rate height in the optional position of down-hole string, sealingly secure is reliable, and this device is not reported by retrieval.
The utility model content:
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of rotary oil pipe high pressure plugging device that provides, can keep in repair Operating Pressure to high-pressure oil-gas well, especially sealingly secure, reliable during any wellhead equipment more than changing boll-weevil hanger can be constructed under the above condition of shutoff pressure 50MPa.
The technical scheme that its technical problem that solves the utility model adopts is:
Proposing for achieving the above object of task, its implementation are that the utility model is made up of centerbody, friction body, lower cone, upper cone; A bi-directional slip is housed between described upper cone, the lower cone, matches by the conical surface each other.Described centerbody is connected with sealing mechanism by screw thread.
The sealing mechanism top has rubber tube, be between lower cone and bi-directional slip and the centerbody to be slidingly matched, between upper cone and the centerbody by the flat thread screwed connection, between described friction body and the centerbody for being slidingly matched.
Working method of the present utility model is:
During construction the high pressure plugging device is lowered into the optional position of OIH tubing string, the friction body is supported on the tubing wall, then, the center of rotation body, at upper cone and lower cone when the bi-directional slip conical surface moves, pushing bi-directional slip open makes plugging device be stuck in the depth location of oil pipe design, be further rotated centerbody then, at this moment, the packing element on the sealing mechanism expands owing to being compressed, and with the tube inner wall passage plugging, thereby after reaching realization pressure shutoff purpose construction end, the reverse rotation centerbody, this moment, bi-directional slip was regained, and plugging device can be tripped out from the OIH pipe.
The utility model compared with prior art has remarkable result:
Because the mode of using screwed connection between a bi-directional slip and centerbody and the sealing mechanism is installed between upper cone on plugging device and the lower cone, like this can be under the situation of center of rotation body, make upper cone and lower cone when the bi-directional slip conical surface moves, push bi-directional slip open, plugging device is stuck in the oil pipe design attitude, and then be further rotated centerbody and make the packing element pressurized on the sealing mechanism and expand, thereby realize the target of pressure shutoff oil pipe, action accurately and reliably during this arrangement works, owing to adopted bidirectionally anchoring slips mode, stress balance, the safety factor height, packing element in the sealing mechanism can more can be realized reliable envelope under tube inner wall size irregular conditions in addition, is particularly suitable for allowing pressurized maintenance work in the high-pressure oil-gas well manufacturing process.
Description of drawings:
Accompanying drawing is an overall structure schematic diagram of the present utility model.
Among the figure by sealing mechanism 1,, 2, lower cone, 3, bi-directional slip, 4, upper cone, 5, the friction body, 6, centerbody forms.
The specific embodiment:
Among the figure, centerbody 6 is that the cylinder of a different-diameter all has pin thread at cylindrical size diameter end, wherein, larger diameter end is connected with sealing mechanism 1, smaller diameter end is connected with instrument, be carved with circular groove on the large diameter cylindrical of centerbody 6, lower cone 2 and bi-directional slip 3 and upper cone 4 are equipped with in the circular groove position; Bi-directional slip 3 and lower cone 2 and upper cone 4 match by the conical surface each other, between upper/lower cone.Bi-directional slip 3 sticks together mutually with the conical surface of lower cone 2 and upper cone 4 during assembling.Between lower cone 2 and bi-directional slip 3 and the centerbody 6 for being slidingly matched, wherein between upper cone 4 and the centerbody 6 by the flat thread screwed connection together, be between friction body 5 and the centerbody 6 and be slidingly matched, sealing mechanism 1 top has rubber tube, and the screw thread by the top is connected with centerbody 6.
Described friction body 5 is the cylinder of a different-diameter, in central duct is arranged, centerbody 6 passes from this hole, on friction body 5 major diameter position outer walls, be drilled with several vertical eyelets, spring is housed in the eyelet, be placed with the friction surface that metal column (figure does not draw) is formed thus above the spring, can play a supporting role, during construction, to be installed put be lowered into the precalculated position after, the friction body support under whole device is fixed on the tube inner wall, beginning the center of rotation body then makes, lower cone moves, and push bi-directional slip open and then continue the center of rotation body, make the packing element distending in the sealing mechanism, can realize the grappling and the shutoff of plugging device, by the reverse rotation centerbody, plugging device can be tripped out from oil pipe again during deblocking.
Claims (2)
1. a rotary oil pipe high pressure plugging device is made up of centerbody (6), friction body (5), upper cone (4), lower cone (2); It is characterized in that: between described upper cone (4), the lower cone (2) bi-directional slip (3) is housed and matches by the conical surface each other, described centerbody (6) is connected with sealing mechanism (1) by the screw thread of top.
2. a kind of rotary oil pipe high pressure plugging device according to claim 1, it is characterized in that: described sealing mechanism (1) top has rubber tube, be between lower cone (4) and bi-directional slip (3) and the centerbody (6) and be slidingly matched, between upper cone (4) and the centerbody (6) by the flat thread screwed connection, between described friction body (5) and the centerbody (6) for being slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123045U CN201050326Y (en) | 2007-05-22 | 2007-05-22 | Rotary type oil pipe high pressure plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200123045U CN201050326Y (en) | 2007-05-22 | 2007-05-22 | Rotary type oil pipe high pressure plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050326Y true CN201050326Y (en) | 2008-04-23 |
Family
ID=39336810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200123045U Expired - Fee Related CN201050326Y (en) | 2007-05-22 | 2007-05-22 | Rotary type oil pipe high pressure plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050326Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722357A (en) * | 2012-10-15 | 2014-04-16 | 重庆科帆机电设备有限公司 | Fast high-pressure sealing equipment |
| CN107701148A (en) * | 2017-11-03 | 2018-02-16 | 中国石油天然气股份有限公司 | A kind of interior anchoring type closure tubing valve and its method of work |
| CN111852384A (en) * | 2020-07-21 | 2020-10-30 | 肖云东 | Packer for oil field downhole |
-
2007
- 2007-05-22 CN CNU2007200123045U patent/CN201050326Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722357A (en) * | 2012-10-15 | 2014-04-16 | 重庆科帆机电设备有限公司 | Fast high-pressure sealing equipment |
| CN107701148A (en) * | 2017-11-03 | 2018-02-16 | 中国石油天然气股份有限公司 | A kind of interior anchoring type closure tubing valve and its method of work |
| CN111852384A (en) * | 2020-07-21 | 2020-10-30 | 肖云东 | Packer for oil field downhole |
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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: 20080423 Termination date: 20110522 |