CN210768699U - Bridge plug without rubber cylinder - Google Patents
Bridge plug without rubber cylinder Download PDFInfo
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- CN210768699U CN210768699U CN201921595999.3U CN201921595999U CN210768699U CN 210768699 U CN210768699 U CN 210768699U CN 201921595999 U CN201921595999 U CN 201921595999U CN 210768699 U CN210768699 U CN 210768699U
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Abstract
The utility model relates to the technical field of underground bridge plugs, in particular to a bridge plug without a rubber tube, which comprises a mandrel, a metal sealing tube, a cone sleeve, slips and a pilot cone, wherein an installation ring platform is arranged outside the upper part of the mandrel, the metal sealing tube with the lower end positioned outside the middle part of the mandrel is arranged outside the installation ring platform, the inner side of the lower part of the metal sealing tube can be radially outwards expanded when being subjected to outwards extrusion force, and the upper end of the metal sealing tube and the installation ring platform are fixedly installed together through a first shear pin; a ball seat ring platform is arranged on the inner side of the upper part of the mandrel corresponding to the position below the mounting ring platform; the outer side of the lower end of the mandrel is provided with a guide cone, and the outer side of the lower end of the guide cone is provided with a limit ring table. The utility model has the advantages of reasonable and compact structure, convenient to use replaces the packing element through the metal seal section of thick bamboo, can form the floccule after avoiding the packing element to dissolve, piles up in the import along with the flow back, causes the pit shaft to block up to extension engineering treatment cycle causes manpower and materials extravagant, has high temperature resistant, the easy soluble and sealed effectual characteristics.
Description
Technical Field
The utility model relates to a bridge plug technical field in the pit is a no packing element bridge plug.
Background
Among the remaining oil and gas resources in China, 80% are low-grade resources, which are unconventional resources represented by shale gas and dense oil. The development difficulty of low-grade resources is high, and the requirement on engineering technology is high. In order to further release the potential of stratum resources and improve the yield of oil and gas, bridge plug-perforation combined fracturing becomes a mainstream technology for unconventional oil and gas reservoir transformation. Soluble bridge plugs are the core product of bridge plug-perforation combined fracturing.
At present, the conventional soluble bridge plug generally adopts aluminum magnesium alloy and soluble rubber materials, and the two materials can be electrolyzed and degraded in a certain mineralization degree and temperature environment in an oil and gas well to finally disintegrate and dissolve. Therefore, drilling is not needed, and a large amount of operation cost is saved. However, conventional soluble bridge plugs use packing rubber barrel compression to achieve zonal isolation. Because the glue cylinder can form floccule after being dissolved and is accumulated at an inlet along with the flowback liquid, a shaft can be blocked, the engineering treatment period is long, and the operation cost is high; in addition, the temperature of the use environment of the current soluble rubber cylinder material is required to be in the range of 40-135 ℃, otherwise, the rubber cylinder can be sealed and failed or can not be dissolved. Therefore, the development and application of the soluble bridge plug technology are greatly restricted.
Disclosure of Invention
The utility model provides a no packing element bridging plug has overcome above-mentioned prior art not enough, and it can effectively solve to form the floccule after the packing element of current soluble rubber materials dissolves and block up the pit shaft to and the harsh problem of solution temperature.
The technical scheme of the utility model is realized through following measure: a bridge plug without a rubber cylinder comprises a mandrel, a metal sealing cylinder, a cone sleeve, a slip and a guide cone, wherein an installation ring platform is arranged on the outer side of the upper part of the mandrel, the metal sealing cylinder with the lower end positioned on the outer side of the middle part of the mandrel is arranged on the outer side of the installation ring platform, the inner side of the lower part of the metal sealing cylinder can be radially and outwardly expanded when being subjected to outward extrusion force, and the upper end of the metal sealing cylinder and the installation ring platform are fixedly installed together through a first shear pin; a ball seat ring platform is arranged on the inner side of the upper part of the mandrel corresponding to the position below the mounting ring platform; a guide cone is arranged on the outer side of the lower end of the mandrel, a limiting ring table is arranged on the outer side of the lower end of the guide cone, and a second shear pin capable of fixedly mounting the guide cone and the mandrel together is arranged on the outer side of the limiting ring table; the outer side of the middle part of the guide cone is sleeved with a slip with a lower end seat at the upper end of the limit ring table, and the inner side of the upper part of the slip can be radially expanded outwards when being subjected to outward extrusion force; the outer side of the middle part of the mandrel is provided with a cone sleeve, the cone sleeve comprises an upper cone section and a lower cone section which are fixedly installed together from top to bottom, the upper cone section is in a circular truncated cone shape with a small upper part and a large lower part, the upper end of the upper cone section is positioned on the inner side of the lower part of the metal sealing cylinder, the lower cone section is in a circular truncated cone shape with a large upper part and a small lower part, and the lower end of the lower cone section is positioned on; a retaining assembly capable of preventing the mandrel from descending relative to the guide cone is arranged between the guide cone and the lower cone section; the mandrel, the cone sleeve, the metal sealing cylinder, the cone sleeve, the slips, the guide cone, the first shear pin and the second shear pin can be dissolved in a chlorine-containing solution.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the retaining device can comprise a locking ring, inner retaining teeth, outer retaining teeth and an anti-rotation pin, wherein the inner side of the lower conical section is fixedly provided with the locking ring, the inner side of the locking ring is continuously provided with at least one group of inner retaining teeth from top to bottom, the inner retaining teeth are ring platforms with straight triangular sections, the ring platforms are wide at the top and narrow at the bottom, the outer side of the upper part of the guide cone corresponding to the locking ring is provided with the outer retaining teeth matched with the inner retaining teeth, the outer retaining teeth are ring platforms with right-angled triangular sections, and the ring platforms are narrow at the top and wide at the bottom; the lock ring is provided with an anti-rotation opening which is communicated up and down, the outer side of the lower conical section corresponding to the position of the anti-rotation opening is provided with at least one anti-rotation pin, and the inner end of each anti-rotation pin is positioned in the anti-rotation opening.
The inner side of the upper part of the slip can be provided with a lower frustum hole matched with the lower frustum section, and the lower frustum hole is in a circular truncated cone shape with a large upper part and a small lower part.
The slip can also comprise slip teeth, and the slip teeth are distributed on the outer side of the slip along the circumference.
The inner side of the upper end of the ball seat ring platform can be provided with a circular platform hole with a big top and a small bottom.
The utility model has the advantages of reasonable and compact structure, convenient to use replaces the packing element through the metal seal section of thick bamboo, can form the floccule after avoiding the packing element to dissolve, piles up in the import along with the flow back, causes the pit shaft to block up to extension engineering treatment cycle causes manpower and materials extravagant, has high temperature resistant, the easy soluble and sealed effectual characteristics.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view at a in fig. 1.
The codes in the figures are respectively: the self-locking type shear pin comprises a mandrel 1, an installation ring platform 2, a first shear pin 3, a metal sealing cylinder 4, a ball seat ring platform 5, an upper conical section 6, a lower conical section 7, a locking ring 8, an inner stopping tooth 9, an outer stopping tooth 10, an anti-rotation pin 11, a slip 12, a slip tooth 13, a guide cone 14, a limiting ring platform 15 and a second shear pin 16.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached drawings 1 and 2, the bridge plug without the rubber sleeve comprises a mandrel 1, a metal sealing cylinder 4, a cone sleeve, a slip 12 and a guide cone 14, wherein an installation ring platform 2 is arranged on the outer side of the upper part of the mandrel 1, the metal sealing cylinder 4 with the lower end positioned on the outer side of the middle part of the mandrel 1 is arranged on the outer side of the installation ring platform 2, the inner side of the lower part of the metal sealing cylinder 4 can be radially outwards expanded when being subjected to outwards extrusion force, and the upper end of the metal sealing cylinder 4 and the installation ring platform 2 are fixedly installed together through a first shear pin 3; a ball seat annular table 5 is arranged on the inner side of the upper part of the mandrel 1 corresponding to the position below the mounting annular table 2; a guide cone 14 is arranged on the outer side of the lower end of the mandrel 1, a limiting ring table 15 is arranged on the outer side of the lower end of the guide cone 14, and a second shear pin 16 capable of fixedly mounting the guide cone 14 and the mandrel 1 together is arranged on the outer side of the limiting ring table 15; the outer side of the middle part of the guide cone 14 is sleeved with a slip 12 with a lower end seat at the upper end of a limit ring table 15, and the inner side of the upper part of the slip 12 can be radially expanded outwards when being subjected to outwards extrusion force; the outer side of the middle part of the mandrel 1 is provided with a cone sleeve, the cone sleeve comprises an upper cone section 6 and a lower cone section 7 which are fixedly installed together from top to bottom, the upper cone section 6 is in a circular truncated cone shape with a small upper part and a large lower part, the upper end of the upper cone section 6 is positioned on the inner side of the lower part of the metal sealing cylinder 4, the lower cone section 7 is in a circular truncated cone shape with a large upper part and a small lower part, and the lower end of the lower cone section 7 is positioned on the; a backstop component capable of preventing the mandrel 1 from descending relative to the guide cone 14 is arranged between the guide cone 14 and the lower cone section 7; the mandrel 1, the cone sleeve, the metal sealing cylinder 4, the cone sleeve, the slips 12, the pilot cone 14, the first shear pin 3 and the second shear pin 16 are all capable of dissolving in a chlorine-containing solution. The mandrel 1, the cone sleeve, the metal sealing cylinder 4, the cone sleeve, the slip 12, the guide cone 14, the first shear pin 3 and the second shear pin 16 are all made of known materials, such as aluminum magnesium alloy materials and the like. In the using process, the upper end of the mandrel 1 and the adapter are fixedly installed together, the lower end of the seat sealing tool is abutted against the upper end of the metal sealing cylinder 4, the mandrel 1 is lifted upwards through the adapter, the metal sealing cylinder 4 cannot move upwards along with the mandrel 1 under the action of the seat sealing tool, and therefore the first shear pin 3 is sheared; the upper conical section 6 which moves upwards along with the mandrel 1 enables the lower part of the metal sealing cylinder 4 to realize radial outward expansion, so that the metal sealing cylinder 4 gradually expands to realize sealing of the inner wall of the sleeve; the slips 12 moving upwards along with the mandrel 1 realize radial outward expansion on the upper part of the slips 12 under the action of the lower conical section 7, so that the slips 12 are broken and clamped on the inner wall of the sleeve, and the seat hanging of the utility model is realized; the pulling force of the mandrel 1 on the adapter is continuously increased, the guide cone 14 cannot move upwards along with the mandrel 1 under the action of the expanded metal sealing cylinder 4 and the broken slips 12, so that the second shear pin 16 is sheared, and the mandrel 1 is pulled out to finish releasing; before fracturing operation, the pitching ball is located on the ball seat annular table 5, so that the sealing of the whole shaft is realized; after the fracturing operation is completed, the liquid in the well bottom flows upwards to dissolve the mandrel 1, the cone sleeve, the metal sealing cylinder 4, the cone sleeve, the slips 12, the guide cone 14, the first shear pin 3 and the second shear pin 16. The utility model has the advantages of reasonable and compact structure, convenient to use replaces the packing element through metal seal section of thick bamboo 4, can form the floccule after avoiding the packing element to dissolve, piles up in the import along with the flow back, causes the pit shaft to block up to extension engineering treatment cycle causes manpower and materials extravagant, has high temperature resistant, the easy soluble and sealed effectual characteristics.
The above-mentioned non-rubber-cylinder bridge plug can be further optimized or/and improved according to the actual need:
as shown in fig. 1 and 2, the retaining device comprises a locking ring 8, inner retaining teeth 9, outer retaining teeth 10 and an anti-rotation pin 11, the inner side of the lower cone section 7 is fixedly provided with the locking ring 8, the inner side of the locking ring 8 is continuously provided with at least one group of inner retaining teeth 9 from top to bottom, the inner retaining teeth 9 are circular platforms with straight triangular sections and narrow at the top, the outer side of the upper part of a guide cone 14 corresponding to the position of the locking ring 8 is provided with the outer retaining teeth 10 matched with the inner retaining teeth 9, the outer retaining teeth 10 are circular platforms with right-angled triangular sections and narrow at the top; the lock ring 8 is provided with an anti-rotation opening which is communicated up and down, the outer side of the lower conical section 7 corresponding to the position of the anti-rotation opening is provided with at least one anti-rotation pin 11, and the inner end of each anti-rotation pin 11 is positioned in the anti-rotation opening. According to the requirement, the locking ring 8 can be a known split ring, the upper opening of the locking ring is an anti-rotation notch, and the outer side of the locking ring 8 is fixedly installed with the inner side of the lower cone through threaded connection. In the using process, the mandrel 1 is prevented from descending relative to the guide cone 14 by arranging the locking ring 8, the inner stopping teeth 9 and the outer stopping teeth 10; the locking ring 8 and the lower cone which are connected through threads are prevented from rotating relatively by the arrangement of the anti-rotation pin 11.
As shown in attached figures 1 and 2, the inner side of the upper part of the slip 12 is provided with a lower frustum hole matched with the lower cone section 7, and the lower frustum hole is in a circular truncated cone shape with a large upper part and a small lower part. In use, when the slips 12 are caused to travel upwardly relative to the lower cone segment 7 by such an arrangement, the upper portion of the slips 12 is caused to expand radially outwardly by the lower cone segment 7, causing the slips 12 to break.
As shown in fig. 1 and 2, the slip-type slip machine further comprises slip teeth 13, and the slip teeth 13 are circumferentially distributed on the outer side of the slip 12. The slip elements 13 may be any known material, such as ceramic or carbide particles, as desired. In the using process, the slip teeth 13 are arranged on the outer side of the slip 12, so that after the slip 12 is broken, the slip teeth 13 are clamped into the inner wall of the casing pipe, and the hanging is completed.
As shown in attached figures 1 and 2, the inner side of the upper end of the ball seat ring platform 5 is provided with a circular platform hole with a big top and a small bottom. During the use process, the ball throwing and pressure holding can be completed conveniently in the follow-up operation through the arrangement.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
Claims (8)
1. A bridge plug without a rubber barrel is characterized by comprising a mandrel, a metal sealing barrel, a cone sleeve, a slip and a guide cone, wherein an installation ring platform is arranged on the outer side of the upper part of the mandrel; a ball seat ring platform is arranged on the inner side of the upper part of the mandrel corresponding to the position below the mounting ring platform; a guide cone is arranged on the outer side of the lower end of the mandrel, a limiting ring table is arranged on the outer side of the lower end of the guide cone, and a second shear pin capable of fixedly mounting the guide cone and the mandrel together is arranged on the outer side of the limiting ring table; the outer side of the middle part of the guide cone is sleeved with a slip with a lower end seat at the upper end of the limit ring table, and the inner side of the upper part of the slip can be radially expanded outwards when being subjected to outward extrusion force; the outer side of the middle part of the mandrel is provided with a cone sleeve, the cone sleeve comprises an upper cone section and a lower cone section which are fixedly installed together from top to bottom, the upper cone section is in a circular truncated cone shape with a small upper part and a large lower part, the upper end of the upper cone section is positioned on the inner side of the lower part of the metal sealing cylinder, the lower cone section is in a circular truncated cone shape with a large upper part and a small lower part, and the lower end of the lower cone section is positioned on; a retaining assembly capable of preventing the mandrel from descending relative to the guide cone is arranged between the guide cone and the lower cone section; the mandrel, the cone sleeve, the metal sealing cylinder, the cone sleeve, the slips, the guide cone, the first shear pin and the second shear pin can be dissolved in a chlorine-containing solution.
2. The bridge plug without the rubber cylinder as claimed in claim 1, wherein the backstop device comprises a locking ring, inner backstop teeth, outer backstop teeth and anti-rotation pins, the locking ring is fixedly installed on the inner side of the lower conical section, at least one group of inner backstop teeth are continuously arranged on the inner side of the locking ring from top to bottom, the inner backstop teeth are circular platforms with straight triangular sections, the circular platforms are wide at the top and narrow at the bottom, the outer backstop teeth matched with the inner backstop teeth are arranged on the outer side of the upper part of the guide cone corresponding to the locking ring, the outer backstop teeth are circular platforms with right-angled triangular sections, and the circular platforms are narrow at the top and wide at the bottom; the lock ring is provided with an anti-rotation opening which is communicated up and down, the outer side of the lower conical section corresponding to the position of the anti-rotation opening is provided with at least one anti-rotation pin, and the inner end of each anti-rotation pin is positioned in the anti-rotation opening.
3. The bridge plug without the rubber cylinder as claimed in claim 1 or 2, wherein the inside of the upper part of the slip is provided with a lower cone hole matched with the lower cone section, and the lower cone hole is in a circular truncated cone shape with a large upper part and a small lower part.
4. The non-rubber-barrel bridge plug according to claim 1 or 2, further comprising slip teeth circumferentially distributed around the outside of the slip.
5. The cementless bridge plug of claim 3, further comprising slip elements circumferentially spaced about the outside of the slip.
6. The bridge plug without rubber cylinder as claimed in claim 1, 2 or 5, wherein the inner side of the upper end of the ball seat ring platform is provided with a circular platform hole with a big top and a small bottom.
7. The bridge plug without rubber cylinder as claimed in claim 3, wherein the ball seat ring platform is provided with a circular platform hole with a larger upper part and a smaller lower part at the inner side of the upper end.
8. The bridge plug without rubber cylinder as claimed in claim 4, wherein the ball seat ring platform is provided with a circular platform hole with a larger upper part and a smaller lower part at the inner side of the upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595999.3U CN210768699U (en) | 2019-09-24 | 2019-09-24 | Bridge plug without rubber cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921595999.3U CN210768699U (en) | 2019-09-24 | 2019-09-24 | Bridge plug without rubber cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210768699U true CN210768699U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921595999.3U Active CN210768699U (en) | 2019-09-24 | 2019-09-24 | Bridge plug without rubber cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN210768699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878032A (en) * | 2020-08-20 | 2020-11-03 | 四川省威沃敦化工有限公司 | No packing element metal seal soluble bridging plug |
-
2019
- 2019-09-24 CN CN201921595999.3U patent/CN210768699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878032A (en) * | 2020-08-20 | 2020-11-03 | 四川省威沃敦化工有限公司 | No packing element metal seal soluble bridging plug |
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