CN205189816U - Tubing plug - Google Patents
Tubing plug Download PDFInfo
- Publication number
- CN205189816U CN205189816U CN201520824084.0U CN201520824084U CN205189816U CN 205189816 U CN205189816 U CN 205189816U CN 201520824084 U CN201520824084 U CN 201520824084U CN 205189816 U CN205189816 U CN 205189816U
- Authority
- CN
- China
- Prior art keywords
- interior
- seating nipple
- piston
- circular bead
- barrel
- 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.)
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Abstract
The utility model relates to a tubing plug belongs to the snubbing serving of well workover engineering, oil pipe plugging device technical field. The utility model discloses comprise outer seating nipple, interior seating nipple, go -between, piston, the central through hole of outer seating nipple is the echelonment, circular bead and spacing draw -in groove in being equipped with, piston and go -between threaded connection, on the interior circular bead of outer seating nipple lower part is arranged in to the go -between, and the go -between is equipped with interior circular bead, interior seating nipple upper portion is fishing head, and the lower part is for salvaging the barrel, salvages the barrel and is equipped with outer circular bead, and the external diameter of its outer circular bead is greater than the interior circular bead internal diameter of go -between upper end, and the bar hole that has the symmetry is opened on salvaging the barrel to the cartridge in the cavity of go -between, salvage the barrel in the symmetry install two fan -shaped supporting shoes, install the spring between two supporting shoes, supporting shoe upper portion lies in that to salvage on the barrel pipe wall bar of symmetry downthehole, the lower extreme is through selling spool and hinge joint. The utility model discloses can satisfy the shutoff requirement to oil pipe, simple structure, safe and reliable, it is convenient to salvage.
Description
Technical field
The utility model relates to a kind of tubing plug, belongs to the snubbing serving of well workover engineering, tubing plugging device technical field.
Background technology
When the workover treatment of oil-water well no killing well, utilize snubbing serving equipment and supporting calker, in order to control the pressure of oil jacket annular space, and realize no killing well lower oil tube post, need control oil pipe pressure simultaneously, just need to use tubing plug to complete.But under complicated geological environment, when proposing comparatively high technology requirement, existing tubing plug can not meet need of production.
CN200320131529.4 discloses a kind of tubing plug, comprises upper locking nut, pressing plate, support set, leather cup, baffle ring, plug, axle, filler ring, lower locking nut, anchor body, slide block, block, support set composition.Wherein: described support set overcoat has leather cup, and pressing plate is equipped with on leather cup top, there are upper locking nut, lower locking nut in the two ends of described axle, and axle is equipped with plug, filler ring successively, and described anchor body is equipped with slide block, block respectively.Described tubing plug, adopt waterpower to deliver, rubber parts seals, rubber parts and tube inner wall friction when high-pressure hydraulic pushes, and cracky, affects sealing effectiveness; And described blanking plug cannot be salvaged separately, need trip out tubing string could take out, and affects operating efficiency.
Utility model content
The purpose of this utility model is to provide a kind of tubing plug, not only meets the shutoff requirement to oil pipe, can also throw in, salvage, and structure is simple, safe and reliable, it is convenient to salvage.
The utility model is made up of outer working tube, interior seating nipple, connecting ring, piston, and the central through hole of outer working tube is stepped, and bottom is provided with interior shoulder, and upper inside wall pipe has spacing draw-in groove; Piston is threaded with connecting ring, is placed in outer working tube lower cavity; The external diameter of connecting ring is greater than the internal diameter of the centre bore under the interior shoulder of outer working tube bottom, and be placed on the interior shoulder of outer working tube bottom, connecting ring upper end is provided with interior shoulder; Interior seating nipple top is fishing head, bottom is for salvaging cylindrical shell, salvage cylindrical shell lower end and be provided with outer shoulder, the external diameter of its outer shoulder is greater than the interior shoulder internal diameter of connecting ring upper end, is inserted in the cavity of connecting ring, and the top tube wall salvaging cylindrical shell has symmetrical bar hole, salvage in cylindrical shell and be symmetrically installed with two fan-shaped back-up blocks, be provided with spring between two back-up blocks, back-up block top is positioned at salvages bar hole symmetrical on cylindrical shell tube wall, and lower end is connected with piston by bearing pin.
Technique effect of the present utility model is: tubing plug together enters well with tubing string, and piston both can carry out shutoff to oil pipe, prevented the generation of blowout; Meanwhile, adopt piston seal, the wearing and tearing of packing element rubber parts and tube inner wall can be avoided, increase the service life; After oil-water well no killing well workover operation construction completes, seating nipple in tubing plug can be taken out from oil pipe, is convenient to return to normal production again.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1-fishing head, 2-salvaging cylindrical shell, 3-back-up block, 4-connecting ring, 5-bearing pin, 6-piston, 7-outer working tube, 8-joint ring, 9-spring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1, the utility model is made up of outer working tube 7, interior seating nipple, connecting ring 4, piston 6, and the central through hole of outer working tube 7 is stepped, and bottom is provided with interior shoulder 71, upper inside wall pipe has spacing draw-in groove 72; Piston 6 is threaded with connecting ring 4, is placed in outer working tube 7 lower cavity; The external diameter of connecting ring 4 is greater than the internal diameter of the centre bore under the interior shoulder 71 of outer working tube 7 bottom, and be placed on the interior shoulder 71 of outer working tube 7 bottom, connecting ring 4 upper end is provided with interior shoulder 41; Interior seating nipple top is fishing head 1, bottom is for salvaging cylindrical shell 2, salvage cylindrical shell 2 lower end and be provided with outer shoulder 22, the external diameter of its outer shoulder 22 is greater than interior shoulder 41 internal diameter of connecting ring 4 upper end, be inserted in the cavity of connecting ring 4, the top tube wall salvaging cylindrical shell 2 has symmetrical bar hole 21, salvage in cylindrical shell 2 and be symmetrically installed with two fan-shaped back-up blocks 3, between two back-up blocks 3, spring 9 is installed, back-up block 3 top is positioned at salvages bar hole 21 symmetrical on cylindrical shell 2 tube wall, and lower end is connected with piston 6 by bearing pin 5.
Described piston 6 is provided with joint ring 8.
When oil-water well snubbing serving is constructed, the utility model is connected on tubing string, in the process of going into the well, under the effect of down-hole formation pressure, piston 6 to up and promote in seating nipple up, under the effect of spring 9, two the fan-shaped back-up blocks 3 salvaged in cylindrical shell 2 are stuck in the spacing draw-in groove 72 on the upper inside wall pipe of outer working tube 7, stop piston 6 up, can gas channel be closed, avoid OIH gas blowout to go out well head; After oil-water well no killing well workover operation construction completes, under enter wire rope fishing tool pin in the fishing head 1 on seating nipple top, on carry wire rope fishing tool drive salvage cylindrical shell 2 up, salvage two fan-shaped back-up blocks 3 in cylindrical shell 2, salvaging under the effect of the bar hole 21 on the tube wall of cylindrical shell 2 top, the elastic force overcoming spring 9 is retracted into be salvaged in cylindrical shell 2 cavity, piston 6 can be proposed outer working tube 7 to ground well head, complete the salvaging of piston 6, return to normal production.
Claims (2)
1. a tubing plug, be made up of outer working tube (7), interior seating nipple, connecting ring (4), piston (6), it is characterized in that: the central through hole of outer working tube (7) is stepped, bottom is provided with interior shoulder (71), upper inside wall pipe has spacing draw-in groove (72), piston (6) is threaded with connecting ring (4), is placed in outer working tube (7) lower cavity, the external diameter of connecting ring (4) is greater than the internal diameter of the centre bore under the interior shoulder (71) of outer working tube (7) bottom, and be placed on the interior shoulder (71) of outer working tube (7) bottom, connecting ring (4) upper end is provided with interior shoulder (41), interior seating nipple top is fishing head (1), bottom is for salvaging cylindrical shell (2), salvage cylindrical shell (2) lower end and be provided with outer shoulder (22), the external diameter of its outer shoulder (22) is greater than interior shoulder (41) internal diameter of connecting ring (4) upper end, be inserted in the cavity of connecting ring (4), the top tube wall salvaging cylindrical shell (2) has symmetrical bar hole (21), salvage in cylindrical shell (2) and be symmetrically installed with two fan-shaped back-up blocks (3), spring (9) is installed between two back-up blocks, back-up block (3) top is positioned at salvages bar hole (21) symmetrical on cylindrical shell (2) tube wall, lower end is connected with piston (6) by bearing pin (5).
2. a kind of tubing plug according to claim 1, is characterized in that: described piston (6) is provided with joint ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824084.0U CN205189816U (en) | 2015-10-23 | 2015-10-23 | Tubing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824084.0U CN205189816U (en) | 2015-10-23 | 2015-10-23 | Tubing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205189816U true CN205189816U (en) | 2016-04-27 |
Family
ID=55782816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824084.0U Active CN205189816U (en) | 2015-10-23 | 2015-10-23 | Tubing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205189816U (en) |
-
2015
- 2015-10-23 CN CN201520824084.0U patent/CN205189816U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |