CN201050320Y - Mine mouth suspension type high pressure plugging device - Google Patents
Mine mouth suspension type high pressure plugging device Download PDFInfo
- Publication number
- CN201050320Y CN201050320Y CNU200720012305XU CN200720012305U CN201050320Y CN 201050320 Y CN201050320 Y CN 201050320Y CN U200720012305X U CNU200720012305X U CN U200720012305XU CN 200720012305 U CN200720012305 U CN 200720012305U CN 201050320 Y CN201050320 Y CN 201050320Y
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- China
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- centerbody
- cone
- plugging device
- sealing mechanism
- pressure
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- Expired - Fee Related
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Abstract
The utility model relates to an occluder applied in the replacement of the main valve of Christmas tree with pressure in the production process of high-pressure oil and gas wells, in particular to a well head hoisted high pressure occluder composed of a central body, an attrition body, an upper cone, an lower cone and a connecting tube. Between the upper and lower cones, a hanging device matched with the surfaces of the upper and lower cones each other is provided. The left end of the connecting tube is provided with a sealing mechanism and a secure unlocking mechanism. With the device, the replacement work of the main valve of Christmas tree with pressure in the production process of high-pressure oil and gas wells can be proceeded. The hanging and positioning are safe in the work with reliable blocking and smooth unlocking. Moreover, the construction efficiency of the replacement of the main valve of Christmas tree can be improved.
Description
Technical field:
Employed plugging device, especially well head suspended high-voltage plugging device when the utility model relates in the high-pressure oil-gas well manufacturing process replace with pressure production tree main valve.
Background technology:
In hydraulic oil, gas well manufacturing process, owing in well head tubing and casing partly, have higher pressure, if will change the main valve on the production tree, must be with the fluid shutoff in the well.At present, plugging device commonly used all is in oil pipe, adopts the hydraulic setting mode, need finish by playing the lower tubular column job execution, and not only shutoff success rate is low, and security risk is big, and operation is complicated.A kind of for this reason well head suspended high-voltage plugging device, be installed in during use above the hanger of well head production tree main valve bottom, only need to adopt rotation mode just can realize shutoff, and working procedure is simple, cost is low, not only shutoff is safe and reliable, and shutoff pressure is greater than 50MPa, 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 the well head suspended high-voltage plugging device that provides, that the mode by the center of rotation body of being installed in during use above the hanger that is positioned at well head production tree main valve bottom can realize is simple to its operation of oil well plugging, shutoff is reliable.
The technical scheme that the utility model adopted is:
The task its implementation that is proposed for achieving the above object is that it is made up of centerbody, friction body, upper cone, lower cone, connecting cylinder; A hitch that cooperatively interacts with the upper/lower cone conical surface is arranged between described upper cone and the lower cone, and described connecting cylinder left end is equipped with sealing mechanism and safe release mechanism.
Described safety locking mechanism is connected with sealing mechanism with pin, be connected by the flat thread screw thread above the center tubes between upper cone and the centerbody, be between described friction body and the centerbody and be slidingly matched, described sealing mechanism is to be set with the twice rubber seal on the outer step position of the round metal ring-type body of a different-diameter.
Working method of the present utility model is:
During work, at first this plugging device is suspended on position above the hanger of well head production tree main valve bottom,, upper cone, lower cone is pushed open hitch by the support of friction piece and the turning effort of centerbody, realize hanging under high pressure safe shutoff well head; Then centerbody is further rotated, and make compression seal bloated organizational structure and staff sealing, thus the high-pressure fluid in the plugged well; During deblocking, reverse rotation centerbody then, if normal deblocking, can on carry centerbody, the shear pin above the safe release mechanism is cut off, carry centerbody on again, safe release mechanism is moved down, this moment, sealing mechanism, hitch were retracted.The process of whole shutoff and deblocking is all finished under air-tight state, and is safe and reliable.
The utility model compared with prior art has remarkable result:
Because the hitch that is equipped with in this device, only need hitch is released be suspended on above the hanger below the production tree main valve by the center of rotation body, realize the location rapidly, guarantee safe shutoff, in addition because the connecting cylinder that the external diameter of centerbody is provided with, sealing mechanism, lower cone and safe release mechanism, between friction body and centerbody, also adopted the rotating seat envelope mode that is slidingly matched, can guarantee like this be further rotated realization pressure shutoff under the centerbody situation, thereby energy is repair and replacement well head main valve smoothly, carry centerbody on only needing during deblocking and can realize safe release again, hitch is regained the shutoff of comprehensively finishing well mouth of oil well.
Description of drawings:
Accompanying drawing is an overall structure schematic diagram of the present utility model.
Among the figure by safe release mechanism 1,, 2, sealing mechanism, 3, connecting cylinder, 4, lower cone, 5, hitch, 6, upper cone, 7, the friction body, 8, centerbody forms.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing:
Among the figure, this plugging device is made up of the friction body 7, upper cone 6, lower cone 4 connecting cylinders 3 that are located on the centerbody external diameter; Centerbody 8 is a different-diameter, external surface has the metal bar of elongated slot, friction body 7 is that a profile has round-meshed metal pipe nipple in the chamfering, centerbody 8 passes from its endoporus, be slidingly matched between friction body 7 and the centerbody 8, the friction external surface is drilled with several degree of depth eyelets, in each eyelet, put into a metal spring, be pressed with one section metal pipe nipple above the spring, after this pipe nipple is pressed into, should stretch out 2 millimeters of eyelet upper surfaces, to guarantee that friction body 7 can be supported on the tube wall, be located at the upper cone 6 on centerbody 8 external diameters in addition, lower cone 4 contacts by the conical surface to each other with the hitch 5 of triangle and works in coordination, and is located at that connecting cylinder 3 left ends on centerbody 8 external diameters are equipped with sealing mechanism 2 and safe release mechanism 1 and upper cone 6 is fixed on above the external diameter of centerbody 8 by the square thread screw thread above the center tubes; Safe release mechanism 1 usefulness pin is connected with sealing mechanism 2; Described sealing mechanism 2 is to be set with the twice rubber seal in the top, outer step position of a different-diameter round metal ring-type body.During construction, at first this plugging device is sent into design attitude, friction body 7 is supported on the tube wall, after when center of rotation body 8, hitch 5 being released upper cone 6 and lower cone 4, be suspended on design attitude and then be further rotated centerbody 8, can make the packing element Expansion sealing above the sealing mechanism 2 again, realize the pressure shutoff, can repair and replacement well head main valve, after construction finishes, on carry centerbody, shear pin above the safe release mechanism 1 is cut off, this moment sealing mechanism 2, connector 3, lower cone 4, upper cone 6 can produce along centerbody 8 and relatively move, and hitch 5 is retracted, and so far finishes the utility model proposes of task.
Claims (2)
1. well head suspended high-voltage plugging device is made up of centerbody (8), friction body (7), upper cone (6), lower cone (4), connecting cylinder (3); It is characterized in that: between described upper cone (6) and the lower cone (4) hitch that cooperatively interacts with the upper/lower cone conical surface (5) is arranged, described connecting cylinder (3) left end is equipped with sealing mechanism (2) and safe release mechanism (1).
2. well head suspended high-voltage plugging device according to claim 1, it is characterized in that: described safety locking mechanism (1) is connected with sealing mechanism (2) with pin, be connected by the flat thread screw thread above the center tubes between upper cone (6) and the centerbody (8), be between described friction body (7) and the centerbody (8) and be slidingly matched, described sealing mechanism (2) is to be set with the twice rubber seal on the outer step position of the round metal ring-type body of a different-diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012305XU CN201050320Y (en) | 2007-05-22 | 2007-05-22 | Mine mouth suspension type high pressure plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012305XU CN201050320Y (en) | 2007-05-22 | 2007-05-22 | Mine mouth suspension type high pressure plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050320Y true CN201050320Y (en) | 2008-04-23 |
Family
ID=39336804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720012305XU Expired - Fee Related CN201050320Y (en) | 2007-05-22 | 2007-05-22 | Mine mouth suspension type high pressure plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050320Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926693A (en) * | 2012-10-26 | 2013-02-13 | 中国石油化工股份有限公司 | Method for plugging and reloading wellhead by using oil pipe plugging device |
-
2007
- 2007-05-22 CN CNU200720012305XU patent/CN201050320Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926693A (en) * | 2012-10-26 | 2013-02-13 | 中国石油化工股份有限公司 | Method for plugging and reloading wellhead by using oil pipe plugging device |
| CN102926693B (en) * | 2012-10-26 | 2015-03-18 | 中国石油化工股份有限公司 | Method for plugging and reloading wellhead by using oil pipe plugging device |
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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 |