CN214886974U - Lifting forced deblocking fracturing packer - Google Patents
Lifting forced deblocking fracturing packer Download PDFInfo
- Publication number
- CN214886974U CN214886974U CN202120071102.8U CN202120071102U CN214886974U CN 214886974 U CN214886974 U CN 214886974U CN 202120071102 U CN202120071102 U CN 202120071102U CN 214886974 U CN214886974 U CN 214886974U
- Authority
- CN
- China
- Prior art keywords
- setting
- packing element
- diameter section
- subassembly
- cylinder
- 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
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model provides a lift and force deblocking fracturing packer, relates to the oil field instrument field in the pit, including center tube, packing element subassembly and setting subassembly all suit are on the center tube, and during the setting, the setting subassembly slides along the center tube under the pressure effect, then compresses the packing element in the packing element subassembly, makes the packing element external diameter increase, realizes the setting, the outside of center tube is provided with two sections that the external diameter is different, is called major diameter district section and minor diameter district section respectively, and the lower extreme in major diameter district section links up with the upper end in minor diameter district section, and the upper end in minor diameter district section is located the inboard of packing element subassembly. When the packer packing element is buried by sand grains and can not be unsealed, the pipe column is lifted upwards, the packing element slides into the small-diameter section on the central pipe, the inner side of the packing element loses support, then the pipe column moves up and down, and impurities fall off through mechanical oscillation to realize unsealing. Therefore, the utility model discloses can effectively solve the packer because of the problem that the sand card is difficult to the deblocking.
Description
Technical Field
The utility model belongs to the oil field instrument field in the pit especially relates to a lift and force deblocking fracturing packer.
Background
The fracturing packer is a common downhole tool in oil field production, and the structure of the fracturing packer comprises a central pipe, a rubber cylinder and a setting piston, and when the fracturing packer works, the central pipe is pressurized, pressure acts on the setting piston through a liquid passing hole in the central pipe to enable the setting piston to move axially, then the rubber cylinder is compressed, the outer diameter of the rubber cylinder is increased, and expansion sealing of the rubber cylinder is realized. However, in production practice, the existing fracturing packer is difficult to unseal once a sand blocking condition occurs after fracturing is completed, so that the pipe column is difficult to pull out, and a great obstacle is caused to normal construction. Therefore, it is necessary to design a sand-stuck-prevention fracturing packer to solve the above problems.
Disclosure of Invention
The utility model provides a lift and force deblocking fracturing packer to solve the problem of proposing in the above-mentioned background art.
The utility model provides a technical problem adopt following technical scheme to realize: the utility model provides a lifting forced deblocking fracturing packer, which comprises a central tube, a rubber tube component and a setting component, wherein the rubber tube component and the setting component are both sleeved on the central tube, when setting, the setting component slides along the central tube under the action of pressure, and then compresses a rubber tube in the rubber tube component, so that the outer diameter of the rubber tube is increased, and the setting is realized,
the outer side of the central tube is provided with two sections with different outer diameters, namely a large-diameter section and a small-diameter section, the lower end of the large-diameter section is connected with the upper end of the small-diameter section, and the upper end of the small-diameter section is positioned on the inner side of the rubber cylinder component;
the setting assembly is in sliding and sealing fit with the small-diameter section on the central pipe, and the distance between the upper end of the small-diameter section and the lower edge of the rubber cylinder assembly is not less than the setting stroke of the setting assembly.
As a further technical scheme, the glue cylinder assembly comprises an upper glue cylinder, a middle glue cylinder and a lower glue cylinder, a spacer ring is arranged between every two adjacent glue cylinders, the upper glue cylinder and the middle glue cylinder are located on the outer side of the large-diameter section, and the lower glue cylinder is located on the outer side of the small-diameter section.
As a further technical scheme, the upper end of the central tube is connected with an upper joint through threads, the outer side of the lower end of the upper joint is connected with an adjusting sleeve through threads, and the lower end face of the adjusting sleeve abuts against the upper side of the upper rubber barrel.
As a further technical scheme, the setting assembly comprises an upper cylinder barrel and a lower cylinder barrel, the lower end of the upper cylinder barrel is connected with the upper end of the lower cylinder barrel through threads, the inner side of the upper end of the upper cylinder barrel and the inner side of the upper end of the lower cylinder barrel are in sliding and sealing fit with the small-diameter section on the central tube, the inner sides of the upper cylinder barrel and the lower cylinder barrel on the central tube are respectively and correspondingly provided with a liquid passing hole A and a liquid passing hole B, the lower part of the upper cylinder barrel is provided with a balance hole, the inner side of the upper cylinder barrel is provided with a sealing seat, the sealing seat is fixedly connected onto the central tube through a fixing pin, and the axial position between the sealing seat and the central tube, which is in sealing fit and sealing point, is located between the liquid passing hole A and the balance hole.
As a further technical scheme, the lower end of the central tube is connected with a lower joint through threads, and the lower cylinder barrel is sleeved on the outer side of the upper end of the lower joint and is fixedly connected to the lower joint through a setting pin.
As a further technical scheme, the upper end of the lower joint is connected with a sand control cap through threads, and the liquid passing hole B is located on the inner side of the sand control cap.
The utility model has the advantages that:
the utility model is specially designed for the problem of sand blocking, when setting, the central tube is pressed, the pressure acts on the upper and lower cylinder barrels through the liquid passing hole A and the liquid passing hole B, so that the upper and lower cylinder barrels move towards the direction close to the rubber barrel component, and then the rubber barrel is compressed, thus realizing setting; when the packer is normally unpacked, the pressure in the central pipe is relieved, the rubber sleeve is restored to the original shape under the action of the elastic restoring force of the rubber sleeve, and the packer is unpacked; when the packer packing element is buried by sand grains and can not be unsealed, the pipe column is lifted upwards, the packing element slides into the small-diameter section on the central pipe, the inner side of the packing element loses support, then the pipe column moves up and down, and impurities fall off through mechanical oscillation to realize unsealing. Therefore, the utility model discloses can effectively solve the packer because of the problem that the sand card is difficult to the deblocking.
Drawings
Fig. 1 is a schematic structural diagram of the upper half of the present invention.
Fig. 2 is a schematic structural diagram of the lower half of the present invention.
In the figure: 1. an upper joint; 2. an adjusting sleeve; 3. gluing a rubber cylinder; 4. a spacer ring; 5. a middle rubber cylinder; 6. an upper cylinder barrel; 7. a central tube; 8. a sealing seat; 9. a fixing pin; 10. a lower cylinder barrel; 11. a sand prevention cap; 12. setting the pin; 13. a lower joint; 14. a seal ring; 15. a rubber cylinder is arranged; 16. a liquid passing hole A; 17. a balance hole; 18. and a liquid passing hole B.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, this embodiment includes center tube 7, packing element subassembly and setting subassembly, and packing element subassembly and setting subassembly all suit are on center tube 7, and during the setting, the setting subassembly slides along center tube 7 under the pressure effect, then compresses the packing element in the packing element subassembly, makes the increase of packing element external diameter, realizes setting. The above is a general structure in the prior art, and is not described herein again.
The outer side of the central tube 7 is provided with two sections with different outer diameters, namely a large-diameter section and a small-diameter section, the lower end of the large-diameter section is connected with the upper end of the small-diameter section, and the upper end of the small-diameter section (namely the lower end of the large-diameter section) is positioned on the inner side of the rubber cylinder component; the setting assembly is in sliding and sealing fit with the small-diameter section on the central pipe 7, and the distance between the upper end of the small-diameter section and the lower edge of the rubber cylinder assembly is not less than the setting stroke of the setting assembly. The structure ensures that the setting assembly sliding on the small-diameter section has enough setting stroke, thereby ensuring that each rubber cylinder in the rubber cylinder assembly is fully compressed. When setting, the central tube 7 is pressed, pressure acts on the upper and lower cylinder barrels through the liquid passing hole A16 and the liquid passing hole B18, the upper and lower cylinder barrels move towards the direction close to the rubber barrel assembly, and then the rubber barrel is compressed, so that setting is realized; when the packer is normally unpacked, the pressure in the central tube 7 is relieved, the rubber sleeve is restored to the original shape under the action of the elastic restoring force of the rubber sleeve, and the packer is unpacked; when the packer packing element is buried by sand grains and can not be unsealed, the pipe column is lifted upwards, the packing element slides into the small-diameter section on the central pipe 7, the inner side of the packing element loses support, then the pipe column moves up and down, and impurities fall off through mechanical oscillation to realize unsealing. Therefore, the utility model discloses can effectively solve the packer because of the problem that the sand card is difficult to the deblocking.
As a further technical scheme, the glue cylinder assembly comprises an upper glue cylinder 3, a middle glue cylinder 5 and a lower glue cylinder 15, a spacer ring 4 is arranged between two adjacent glue cylinders, the upper glue cylinder 3 and the middle glue cylinder 5 are positioned on the outer side of the large-diameter section, and the lower glue cylinder 15 is positioned on the outer side of the small-diameter section. Through setting up three packing element, can form three sealings after the packing element is compressed, and then guarantee the bearing capacity and the sealed effect of packing element.
As a further technical scheme, the upper end of the central tube 7 is connected with an upper joint 1 through threads, the outer side of the lower end of the upper joint 1 is connected with an adjusting sleeve 2 through threads, and the lower end face of the adjusting sleeve 2 abuts against the upper side of the upper rubber sleeve 3. The adjusting sleeve 2 can adjust the precompression degree of the rubber barrel, thereby further improving the sealing effect of the rubber barrel.
As a further technical scheme, the setting assembly comprises an upper cylinder 6 and a lower cylinder 10, the lower end of the upper cylinder 6 is connected with the upper end of the lower cylinder 10 through threads, the inner side of the upper end of the upper cylinder 6 and the inner side of the upper end of the lower cylinder 10 are both in sliding and sealing fit with a small-diameter section on a central tube 7, the inner sides of the upper cylinder and the lower cylinder on the central tube 7 are respectively and correspondingly provided with a liquid passing hole a16 and a liquid passing hole B18, the lower part of the upper cylinder 6 is provided with a balance hole 17, the inner side of the upper cylinder 6 is provided with a sealing seat 8, the sealing seat 8 is fixedly connected on the central tube 7 through a fixing pin 9, and the sealing seat 8 is in sealing fit with the central tube 7 and the axial position of a sealing point is located between the liquid passing hole a16 and the balance hole 17. Through setting up two upper and lower cylinders, can make the setting power double under the certain circumstances of center tube 7 internal pressure to improve packer's bearing capacity and sealed effect.
As a further technical scheme, the lower end of the central tube 7 is connected with a lower joint 13 through threads, and the lower cylinder 10 is sleeved outside the upper end of the lower joint 13 and fixedly connected to the lower joint 13 through a setting pin 12. The setting pin 12 can prevent the rubber sleeve from expanding and sealing in the process of setting the packer in a well and influencing the well, and when the setting pin is set, the setting pin 12 is sheared by the upward movement trend of the lower cylinder 10, so that the setting is realized.
As a further technical scheme, the upper end of the lower joint 13 is connected with a sand control cap 11 through threads, and the liquid passing hole B18 is located on the inner side of the sand control cap 11. The tiny gap between the sand control cap 11 and the central pipe 7 can effectively prevent sand grains in the fracturing fluid from entering the cylinder barrel.
In the above structure, the sealing ring 14 may be used at each sealing engagement position.
Claims (6)
1. The utility model provides a lift and force deblocking fracturing packer, includes center tube (7), packing element subassembly and sits and seal the subassembly, and the packing element subassembly is all overlapped on center tube (7) with the setting subassembly, and during the setting, the setting subassembly slides along center tube (7) under the pressure effect, compresses the packing element in the packing element subassembly then, makes the increase of packing element external diameter, realizes sitting and seals its characterized in that:
the outer side of the central pipe (7) is provided with two sections with different outer diameters, namely a large-diameter section and a small-diameter section, the lower end of the large-diameter section is connected with the upper end of the small-diameter section, and the upper end of the small-diameter section is positioned on the inner side of the rubber cylinder component;
the setting assembly is in sliding and sealing fit with the small-diameter section on the central pipe (7), and the distance between the upper end of the small-diameter section and the lower edge of the rubber cylinder assembly is not less than the setting stroke of the setting assembly.
2. The upward-lifting forced-unsetting fracturing packer of claim 1, wherein: the rubber sleeve component comprises an upper rubber sleeve (3), a middle rubber sleeve (5) and a lower rubber sleeve (15), a spacer ring (4) is arranged between every two adjacent rubber sleeves, the upper rubber sleeve (3) and the middle rubber sleeve (5) are located on the outer side of the large-diameter section, and the lower rubber sleeve (15) is located on the outer side of the small-diameter section.
3. The upward-lifting forced-unsetting fracturing packer of claim 2, wherein: the upper end of the central pipe (7) is connected with an upper joint (1) through threads, the outer side of the lower end of the upper joint (1) is connected with an adjusting sleeve (2) through threads, and the lower end face of the adjusting sleeve (2) abuts against the upper side of the upper rubber sleeve (3).
4. The upward-lifting forced-unsetting fracturing packer of claim 1, wherein: the setting component comprises an upper cylinder barrel (6) and a lower cylinder barrel (10), the lower end of the upper cylinder barrel (6) is connected with the upper end of the lower cylinder barrel (10) through threads, the inner side of the upper end of the upper cylinder barrel (6) and the inner side of the upper end of the lower cylinder barrel (10) are in sliding and sealing fit with the small-diameter section on the central tube (7), the central tube (7) is respectively and correspondingly provided with a liquid passing hole A (16) and a liquid passing hole B (18) with the inner sides of the upper cylinder barrel and the lower cylinder barrel, the lower part of going up cylinder (6) is provided with balancing hole (17), the inboard of going up cylinder (6) is provided with seal receptacle (8), and seal receptacle (8) are through fixed pin (9) fixed connection on center tube (7), and the axial position for sealed cooperation and sealing point is located between seal receptacle (8) and the center tube (7) cross between liquid hole A (16) and balancing hole (17).
5. The upward forced unsetting fracturing packer of claim 4, wherein: the lower end of the central pipe (7) is connected with a lower joint (13) through threads, and the lower cylinder barrel (10) is sleeved on the outer side of the upper end of the lower joint (13) and is fixedly connected to the lower joint (13) through a setting pin (12).
6. The upward-lifting forced-unsetting fracturing packer of claim 5, wherein: the upper end of the lower joint (13) is connected with a sand control cap (11) through threads, and the liquid passing hole B (18) is located on the inner side of the sand control cap (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120071102.8U CN214886974U (en) | 2021-01-12 | 2021-01-12 | Lifting forced deblocking fracturing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120071102.8U CN214886974U (en) | 2021-01-12 | 2021-01-12 | Lifting forced deblocking fracturing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214886974U true CN214886974U (en) | 2021-11-26 |
Family
ID=78863496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120071102.8U Active CN214886974U (en) | 2021-01-12 | 2021-01-12 | Lifting forced deblocking fracturing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214886974U (en) |
-
2021
- 2021-01-12 CN CN202120071102.8U patent/CN214886974U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101639106B (en) | Piston-type hydro-pneumatic buffer | |
| CN110424920B (en) | Self-expanding antiscaling water injection packer | |
| CN104653145A (en) | Long-rubber-barrel differential pressure type water filling packer capable of washing well | |
| CN214886974U (en) | Lifting forced deblocking fracturing packer | |
| CN209724288U (en) | Low pressure unseals amplificate packer | |
| CN105065700B (en) | A kind of self-sealed gate valve structure | |
| CN101165307A (en) | Highly sealed compression packer | |
| CN101016927A (en) | Seal structure of oil-pressure shock absorber | |
| CN2916113Y (en) | Polish rod sealing device for oil pumping well head | |
| CN211314158U (en) | Improved framework rubber cylinder of packer | |
| CN105090607B (en) | A kind of high leakproofness gate valve | |
| CN201650181U (en) | Expansion pipe assembly and driving mechanism thereof | |
| WO2016161611A1 (en) | Air proof pumpjack with double load reduction | |
| CN201016288Y (en) | Well mouth hydraulic self-sealing equipment | |
| CN204492743U (en) | Withstand voltage high temperature resistant pair of packing-element releasing packer | |
| CN205858262U (en) | External casing packer | |
| CN211448607U (en) | Quick-setting expanding hydraulic packer for petroleum machinery | |
| CN201460788U (en) | Automatic aligning and deviation-adjusting polish rod sealing device | |
| CN212296299U (en) | Bidirectional pressure-bearing repeatable setting packer | |
| CN203594402U (en) | Oil tube plugging device | |
| CN101705954A (en) | Floating joint buffering hydraulic cylinder | |
| CN108086938B (en) | Packer | |
| CN214145443U (en) | Balance anchor tile packer | |
| CN206942723U (en) | The symmetrical cartridge of compression packer | |
| CN110984902A (en) | Recoverable combination formula compression packing element protection machanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |