CN219888021U - Removable packer for small-diameter oil pipe - Google Patents
Removable packer for small-diameter oil pipe Download PDFInfo
- Publication number
- CN219888021U CN219888021U CN202320908240.6U CN202320908240U CN219888021U CN 219888021 U CN219888021 U CN 219888021U CN 202320908240 U CN202320908240 U CN 202320908240U CN 219888021 U CN219888021 U CN 219888021U
- Authority
- CN
- China
- Prior art keywords
- slip
- oil pipe
- packing element
- ring
- packer
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000012856 packing Methods 0.000 claims abstract description 23
- 238000010008 shearing Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 28
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000004063 acid-resistant material Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a removable packer for a small-diameter oil pipe, which comprises a central pipe, wherein an overshot, a shearing mechanism, a slip mechanism, a rubber cylinder mechanism and a lower joint are sequentially arranged on the central pipe from top to bottom, the shearing mechanism comprises a conversion joint and a shearing ring which are arranged on the central pipe, and a clamping ring and a locking ring are arranged in the conversion joint; the center tube moves up, the packing element mechanism struts, with oil pipe inner wall contact, packing element mechanism compression deformation, with oil pipe inner wall seal, snap ring and catch are through one-way screw thread meshing effect auto-lock, and packing element mechanism is sealed continuously after the piston pressure release, through set up shearing mechanism, slips mechanism and packing element mechanism on the center tube, can realize setting simultaneously, release and salvage's function, through upwards jolt, cut the deblocking shear pin, can lift the deblocking, easy operation, and the deblocking can be through maintaining, but reuse, cost and production cycle are saved.
Description
Technical Field
The utility model relates to the technical field of petroleum exploitation devices, in particular to a removable packer for a small-diameter oil pipe.
Background
The packer is an underground tool for sealing oil pipe and oil gas well casing or open hole well wall annular space, in oil extraction engineering, the packer is used for layering, the existing packer mostly adopts a hydraulic setting mechanism, the packer is driven to set the packer by designing a stepped sealing surface on the wall thickness of a limited central pipe to form a piston difference, meanwhile, the packer is provided with a self-locking function, so that the inner diameter of the packer is reduced artificially, and other tools and equipment are difficult to be put into.
The existing hydraulic packer is limited by the lowering speed, and when the lowering speed is too high, a tool is easy to shear pins in advance, the pins are set halfway, the string of the pipe is difficult to pull down, and secondary accidents are caused.
In addition, the existing packer adopts a gunpowder blasting seat sealing mechanism, and the gunpowder blasting has certain danger and has certain harm to accompanying personnel in the transportation and storage processes. In the construction process, the filling amount directly influences the setting effect of the packer, so that the requirement on the professional skill of an operator is too high, and the approval process is too complex, so that the construction cost is increased intangibly.
Disclosure of Invention
In view of the above-mentioned drawbacks or shortcomings, it is an object of the present utility model to provide a removable packer for small diameter oil tubes.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a removable packer for minor diameter oil pipe, includes the center tube, the center tube is installed in proper order from top to bottom and is salvaged a section of thick bamboo, shearing mechanism, slips mechanism, packing element mechanism and lower clutch, wherein, shearing mechanism includes crossover sub and shearing ring of installing on the center tube, install snap ring and catch in the crossover sub; the central pipe moves upwards, the rubber cylinder mechanism is spread and contacted with the inner wall of the oil pipe, the rubber cylinder mechanism is compressed and deformed and sealed with the inner wall of the oil pipe, the clamping ring and the locking ring are self-locked through the meshing effect of the unidirectional screw threads, and the rubber cylinder mechanism is continuously sealed after the piston is decompressed.
The central pipe is also provided with a circulating valve outer cylinder and a bottom plug, and the circulating valve outer cylinder is connected with the lower joint.
And a circulating valve shear pin is arranged on the circulating valve outer cylinder.
The adapter and the shear ring are fixedly connected through a first seat seal shear pin.
The slip mechanism includes: the slip barrel is arranged on the central tube, a slip is arranged in the slip barrel, an upper cone and a lower cone are arranged in the slip, and a slip spring is sleeved on the slip.
The tile clamping cylinder is provided with a tile clamping cylinder sheath, and the tile clamping cylinder is fixedly connected with the tile clamping cylinder sheath through a second seat seal shear pin.
The lower cone is fixedly connected with the slips through copper locks.
And a limiting pin is arranged on the slip.
The lower cone is fixedly connected with the central tube through a third seat seal shear pin.
The packing element mechanism includes: the packing element dabber of installing on the center tube, packing element and packing element diaphragm ring are installed to packing element dabber, the packing element dabber with slips mechanism is connected.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a removable packer for a small-diameter oil pipe, which can realize the functions of setting, releasing and salvaging simultaneously by arranging a shearing mechanism, a slip mechanism and a rubber cylinder mechanism on a central pipe, and can lift up and unseal by upward jarring and shearing a unsealing shear pin, so that the operation is simple, the unsealing can be maintained, and the packer can be reused, thereby saving the cost and the production period.
Furthermore, the tool is not limited by the lowering speed, can be used for under-pressure plugging construction, and is mostly used for emergency rescue and other complex situations.
Further, a bypass hole is designed on the central tube, and the steel wire is put into the throwing rod for jarring and shearing, so that the pressure difference between the upper side and the lower side of the rubber cylinder is balanced, the swabbing effect during the deblocking of the packer can be eliminated, and the damage of the rubber of the packer can be reduced;
further, the unidirectional ratchet snap ring is made of brittle and abradable materials, and under the condition of keeping the setting force, the ratchet of the snap ring cannot scratch and other damages to the central tube of the product during deblocking;
furthermore, the slips are integrally designed by adopting bidirectional rivets, can be uniformly anchored on the casing wall, reduce the damage to the casing, are easy to recycle, and can bear the up-down pressure difference in the oil pipe.
Furthermore, the special tool fishing tool is put into, the unsealing shearing pin is sheared by upward jarring, the unsealing can be lifted upwards, the operation is simple, the unsealing can be maintained and reused, and the cost and the production period are saved.
Furthermore, the whole tool is made of anti-corrosion acid-resistant materials, and can be used in a well for a long time.
Drawings
FIG. 1 is a schematic illustration of the construction of a removable packer for small diameter oil pipe of the apparatus of the present utility model.
In the figure, 1-a pull ring; 2-overshot; 3-a conversion joint; 4-a shear ring; 5-a tile cartridge connector; 6-a slip barrel sheath; 7-a tile clamping cylinder; 8-slips; 9-an upper cone; 10-a central tube; 11-a lower cone; 12-a rubber diaphragm ring; 13, a rubber cylinder; 14-a rubber cylinder mandrel; 15-lower joint; 16-a circulation valve outer cylinder; 17-bottom plug; 18-cycle valve shear pin; 19-a limiting pin; 20-1, a first seat seal shear pin; 20-2, a second seat seal shear pin; 20-3, a third seat seal shear pin; 21-slip springs; 22-a clasp; 23-locking ring; 24-copper lock; 25-a first sealing ring; 26-a second sealing ring; 27-a third sealing ring; 28-a fourth sealing ring; 29-a fifth seal ring; 30-sixth sealing ring.
Detailed Description
The present utility model now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
As shown in figure 1, the utility model provides a removable packer for a small-diameter oil pipe, which can be put in a transmission mode of steel wires and cables, is set by an electric setting tool, is recovered by upward jarring through a standard GS fishing tool, and is mainly used for operations such as under-pressure well repair, under-pressure wellhead replacement, layered water shutoff and the like. The hydraulic pipe comprises a central pipe 10, wherein the central pipe 10 is sequentially provided with an overshot 2, a shearing mechanism, a slip mechanism, a rubber cylinder mechanism and a lower joint 15 from top to bottom, the shearing mechanism comprises an adapter joint 3 and a shearing ring 4 which are arranged on the central pipe 10, and a clamping ring 22 and a locking ring 23 are arranged in the adapter joint 3; the central pipe 10 moves upwards, the rubber cylinder mechanism is spread and contacted with the inner wall of the oil pipe, the rubber cylinder mechanism is compressed and deformed and sealed with the inner wall of the oil pipe, the clamping ring 22 and the locking ring 23 are self-locked through the one-way screw thread meshing action, the rubber cylinder mechanism is continuously sealed after the piston is decompressed, the adapter 3 and the shearing ring 4 are fixedly connected through the first seat seal shearing pin sealing ring 20-1, the pull ring 1 is arranged in the overshot 2, and the first sealing ring 25 is arranged between the overshot 2 and the pull ring 1. A second sealing ring 26 is arranged between the adapter 3 and the clamping ring 22.
Preferably, the central pipe 10 of the present utility model is further provided with a circulation valve outer cylinder 16 and a bottom plug 17, the circulation valve outer cylinder 16 is connected with the lower joint 15, and the circulation valve outer cylinder 16 is provided with a circulation valve shear pin 18. A fifth sealing ring 29 is installed between the lower joint 15 and the central tube 10. A sixth sealing ring 30 is arranged between the circulation valve outer cylinder 16 and the bottom plug 17.
Specifically, the slip mechanism includes: the slip barrel 7 is arranged on the central pipe 10, the slip 8 is arranged in the slip barrel 7, the upper cone sealing rings 9 and the lower cone sealing rings 11 are arranged in the slip 8, the slip 8 is sleeved with a slip spring 21, the slip barrel 7 is provided with a slip barrel sheath 6, and the slip barrel 7 and the slip barrel sheath 6 are fixedly connected through a second seat sealing shear pin 20-2. The lower cone 11 is fixedly connected with the slips 8 through copper locks 24. Preferably, the lower cone 11 is fixedly connected with the central tube 10 through a second seat seal shear pin 20-2, further, a limit pin 19 is installed on the slip 8, and the lower cone 11 is fixedly connected with the central tube 10 through a third seat seal shear pin 20-3.
The packing element mechanism includes: the packing element dabber 14 of installing on the center tube 10, install packing element 13 and packing element diaphragm ring 12 on the packing element dabber 14, packing element dabber 14 with slips mechanism is connected. A third sealing ring 27 is arranged between the lower cone 11 and the rubber cylinder mandrel 14, and a fourth sealing ring 28 is arranged between the rubber cylinder diaphragm ring 12 and the rubber cylinder mandrel 14.
Preferably, a bypass hole is designed on the central tube 10, and the steel wire is put into a throwing rod for jarring and shearing, so that the pressure difference between the upper side and the lower side of the rubber cylinder is balanced, the pumping effect during the deblocking of the packer can be eliminated, and the damage to the rubber of the packer can be reduced;
the working process of the utility model is as follows:
setting:
the transmission mode of steel wires and cables is utilized for entering, the electric seat sealing tool is used for seat sealing, when the electric seat sealing tool works, the central tube 10 moves upwards to shear the copper pin 24, the slips 8 are spread under the action of the upper cone 9 and the lower cone 11 to clamp the inner wall of the oil pipe, the seat sealing force is continuously exerted, the third seat sealing shear pin sealing ring 20-3 is sheared, and the rubber barrel is compressed and deformed to be sealed on the inner wall of the oil pipe. The snap ring and the lock ring are meshed through unidirectional threads, self-locking is achieved, and the rubber cylinder is continuously sealed after the piston is decompressed.
Releasing:
when the seat sealing force of the seat sealing tool is larger than the strength of the pull ring 1, the pull ring 1 is sheared, and the seat sealing tool is separated from the inner cavity of the bridge plug, so that releasing is realized.
Salvaging:
1. the steel wire rope is used for penetrating into the inner hole of the central tube 10 of the bridge plug, and the upper pressure and the lower pressure are balanced by shearing the circulating valve shearing pin 18 through upper and lower jarring.
2. The special GS fishing tool is put down, the fishing tool is clamped on the fishing diameter of the overshot, the deblocking shear pin is sheared by upward shock, the seat sealing shear pin is pulled, the fishing head pulls the adapter upward, the locking block of the locking mechanism is released, the locking mechanism fails, the fishing head continues to move upward to drive the lock sleeve, the central tube 10, the upper cone 9 and the slips 8 to move upward to reset through steps, and deblocking is completed.
It will be apparent to those skilled in the art that the foregoing is merely illustrative of the preferred embodiments of this utility model, and that certain modifications and variations may be made in part of this utility model by those skilled in the art, all of which are shown and described with the understanding that they are considered to be within the scope of this utility model.
Claims (10)
1. The removable packer for the small-diameter oil pipe is characterized by comprising a central pipe (10), wherein an overshot (2), a shearing mechanism, a slip mechanism, a rubber cylinder mechanism and a lower joint (15) are sequentially arranged on the central pipe (10) from top to bottom, the shearing mechanism comprises an adapter joint (3) and a shearing ring (4) which are arranged on the central pipe (10), and a clamping ring (22) and a clamping ring (23) are arranged in the adapter joint (3); the central tube (10) moves upwards, the rubber cylinder mechanism is spread and contacted with the inner wall of the oil pipe, the rubber cylinder mechanism is compressed and deformed and sealed with the inner wall of the oil pipe, the clamping ring (22) and the locking ring (23) are self-locked through the one-way screw thread meshing effect, and the rubber cylinder mechanism is continuously sealed after the piston is decompressed.
2. The removable packer for small-diameter oil pipes according to claim 1, characterized in that the central pipe (10) is further provided with a circulation valve outer cylinder (16) and a bottom plug (17), and the circulation valve outer cylinder (16) is connected with the lower joint (15).
3. The removable packer for small diameter oil pipe according to claim 2, wherein the circulation valve outer cylinder (16) is provided with a circulation valve shear pin (18).
4. The removable packer for small diameter oil pipe according to claim 1 or 2, characterized in that the crossover sub (3) and the shear ring (4) are fixedly connected by a first set shear pin (20-1).
5. The retrievable packer for small diameter oil pipe according to claim 1 or 2, wherein the slip mechanism comprises: the slip barrel (7) is arranged on the central pipe (10), the slip barrel (7) is internally provided with a slip (8), the slip (8) is internally provided with an upper cone (9) and a lower cone (11), and the slip (8) is sleeved with a slip spring (21).
6. The removable packer for small diameter oil pipe according to claim 5, wherein the slip cylinder (7) is provided with a slip cylinder jacket (6), and the slip cylinder (7) and the slip cylinder jacket (6) are fixedly connected by a second set shear pin (20-2).
7. The removable packer for small diameter oil pipe according to claim 5, characterized in that the lower cone (11) is fixedly connected with the slips (8) by means of copper locks (24).
8. The removable packer for small diameter oil pipe according to claim 5, characterized in that the slips (8) are fitted with a stop pin (19).
9. The removable packer for small diameter oil pipe according to claim 5, characterized in that the lower cone (11) is fixedly connected with the central pipe (10) by means of a third set shear pin (20-3).
10. The removable packer for small diameter oil pipe according to claim 1 or 2, wherein the packing element mechanism comprises: the packing element dabber (14) of installing on center tube (10), install packing element (13) and packing element diaphragm ring (12) on packing element dabber (14), packing element dabber (14) with slips mechanism is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320908240.6U CN219888021U (en) | 2023-04-21 | 2023-04-21 | Removable packer for small-diameter oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320908240.6U CN219888021U (en) | 2023-04-21 | 2023-04-21 | Removable packer for small-diameter oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219888021U true CN219888021U (en) | 2023-10-24 |
Family
ID=88401857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320908240.6U Active CN219888021U (en) | 2023-04-21 | 2023-04-21 | Removable packer for small-diameter oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219888021U (en) |
-
2023
- 2023-04-21 CN CN202320908240.6U patent/CN219888021U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9587466B2 (en) | Cementing system for riserless abandonment operation | |
| US10214988B2 (en) | Riserless abandonment operation using sealant and cement | |
| US9488024B2 (en) | Annulus cementing tool for subsea abandonment operation | |
| CN108019178B (en) | Construction method for plugging production pipe column under pressure in pipe | |
| CN211549659U (en) | Long-life water injection string of offshore oil field | |
| CN209976509U (en) | Recovery type ash squeezing device | |
| CN108425655B (en) | Removable hanging packer for snubbing production string | |
| CN111255412A (en) | Salvageable mechanical plugging bridge plug for emergency and method | |
| CN111075388B (en) | Hydraulic releasing packer and method for preventing midway setting | |
| CN112709557A (en) | Safe and long-acting water injection string for offshore oil field and construction method | |
| CN219888021U (en) | Removable packer for small-diameter oil pipe | |
| CN112343539B (en) | Hydraulic delivery steel wire salvage oil pipe inner blocking device and using method thereof | |
| CN107780862B (en) | Fishing device for underground throttler | |
| CN101691834B (en) | Inner tube-free drillable-retrievable grading cementing well completion technology | |
| CN208184710U (en) | Shearing casing annulus relief valve | |
| CN202745769U (en) | Under-pressure tripping-in device of continuous tube overlong drilling tool | |
| CN110617025A (en) | Pumping type casing pipe plugging tool for tubing running without pressure and using method thereof | |
| CN114458226B (en) | Hydraulic pipeline setting type cable passing packer and well completion pipe string using same | |
| CN113073958B (en) | Recyclable bridge plug and using method | |
| CN210858651U (en) | Dissolvable special oil pipe bridge plug for under-pressure operation | |
| CN102296939B (en) | Automatic pressure-balancing expansion-catch integrated expandable tube tool and use method thereof | |
| CN113494259A (en) | Coiled tubing suspension device, coiled tubing wellhead mandrel type suspension structure and method | |
| CN117684910B (en) | Efficient sand-prevention forced unclamping throttle | |
| CN107304659B (en) | Plugging device | |
| CN212027735U (en) | Temporary fracturing plugging type production packing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |