CN217538647U - Mechanical setting fishable drillable bridge plug - Google Patents
Mechanical setting fishable drillable bridge plug Download PDFInfo
- Publication number
- CN217538647U CN217538647U CN202221316476.2U CN202221316476U CN217538647U CN 217538647 U CN217538647 U CN 217538647U CN 202221316476 U CN202221316476 U CN 202221316476U CN 217538647 U CN217538647 U CN 217538647U
- Authority
- CN
- China
- Prior art keywords
- guide shoe
- sleeve
- ring
- hole
- piston
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 241000251468 Actinopterygii Species 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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- Fishing Rods (AREA)
Abstract
The utility model provides a mechanical type is sat and is sealed can drag for and to bore bridging plug. Relates to the technical field of oil field downhole tools. The lower part of the inner hole of the one-way gear sleeve is provided with a ring groove, a piston is arranged in the ring groove, the upper part of the ring groove is provided with a liquid inlet hole communicated with the top of the guide shoe, and an elastic split ring at the lower part of the piston is semi-embedded in a step groove of the guide shoe. The utility model discloses following beneficial effect has: the plug is sealed to drop into soluble ball in the well, to the suppress in the well, pressure liquid gets into from the feed liquor hole and promotes the piston down, the wedge ring of piston prizes the elasticity split ring and breaks away from the guide shoe, the axial constraint between one-way tooth cover and the guide shoe is relieved, the bridging plug deblocking, catch on the salvage groove through fishing tool and fish out the bridging plug, when the bridging plug blocks to die and can't salvage, can go into the drilling tool and bore one-way tooth cover position, the bridging plug deblocking is salvaged again, one-way tooth cover is located the upper portion and bores easily, this bridging plug setting deblocking is reliable, sealing performance is high, can drag for and bore.
Description
The technical field is as follows:
the utility model belongs to the technical field of the oil field instrument technique in the pit and specifically relates to a mechanical type is sat and is sealed can drag for and to bore bridging plug.
Background art:
in the oil field fracturing operation in-process, the bridging plug that can drag for is commonly used to carry out the shutoff operation, but because the tradition can drag for the bridging plug later stage and meet the corruption rust death when needing to salvage, can't drag for or meet the card after can't retreatment, need resume former well casing and carry out workover.
The utility model has the following contents:
in order to solve the problem that present bridging plug corrosion can't be dragged for, the utility model provides a mechanical type is sat and is sealed can drag for and bore bridging plug.
The technical scheme of the utility model is that: the utility model provides a mechanical type setting can be dragged for and can be bored bridging plug, including the pull rod, the pull rod passes through the tong shear pin and connects the guide shoe, connect through the setting shear pin between taper sleeve and the pull rod, connect the slips between the conical surface of taper sleeve below and the conical surface of guide shoe top, slips top has set gradually push ring and packing element, packing element and push ring cover are on the cylindrical excircle of taper sleeve, the taper sleeve hole is processed into one-way tooth hole, the taper sleeve passes through one-way tooth hole and is connected with one-way tooth sleeve, one-way tooth sleeve hole lower part is opened there is the annular, be equipped with the piston in the annular, annular upper portion is opened has the feed liquor hole with the guide shoe top intercommunication, the piston lower part has the split ring of elasticity to inlay in the step groove of guide shoe, the outside top of elasticity split ring is in the annular lower part, the piston lower part is equipped with the wedge ring, the wedge ring of piston is pressed in the wedge ring bottom of elasticity split ring.
The top end of the inner hole of the guide shoe is processed into a conical hole.
One-way perforation and one-way tooth cover are located the guide shoe top, exist the annular space that is higher than one-way tooth height between vertebra cover lower part and the guide shoe, are equipped with in this annular space and support the cover.
The outer diameter of the rubber cylinder is smaller than that of the push ring.
The upper circumference of the slip is provided with a plurality of slots.
The upper part of the inner hole of the taper sleeve is provided with a circle of fishing grooves.
The utility model discloses following beneficial effect has: putting soluble ball into the well, setting the soluble ball on the taper hole, pressing the soluble ball into the well, pushing the piston to move downwards through the liquid inlet hole, prying the elastic split ring by the wedge ring of the piston to separate from the guide shoe, releasing the axial constraint between the one-way gear sleeve and the guide shoe, unsealing the bridge plug, catch on the salvage groove through fishing tool and fish out the bridging plug, when the bridging plug card dies unable salvage, can go into the drilling tool and bore out unidirectional tooth cover position, the bridging plug deblocking is salvaged again, and unidirectional tooth cover is located upper portion and bores out easily, and this bridging plug sits to seal the deblocking reliable, and sealing performance is high, can fish out the drillable.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure, 1-a pull rod, 2-a taper sleeve, 3-a rubber cylinder, 4-a push ring, 5-a slip, 6-a guide shoe, 7-a support sleeve, 8-a one-way tooth hole, 9-a one-way tooth sleeve, 10-a conical hole, 11-a liquid inlet hole, 12-an elastic split ring, 13-a piston, 14-a fishing groove, 15-a setting shear pin, 16-a releasing shear pin and 17-a ring groove.
The specific implementation mode is as follows:
the present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, a mechanical setting fishable drillable bridge plug comprises a pull rod 1, the pull rod 1 is connected with a guide shoe 6 through a releasing shear pin 16, a taper sleeve 2 is connected with the pull rod 1 through a setting shear pin 15, a slip 5 is connected between a conical surface below the taper sleeve 2 and a conical surface above the guide shoe 6, a push ring 4 and a rubber cylinder 3 are sequentially arranged above the slip 5, the rubber cylinder 3 and the push ring 4 are sleeved on a cylindrical outer circle of the taper sleeve 2, an inner hole of the taper sleeve 2 is processed into a one-way toothed hole 8, the taper sleeve 2 is connected with the one-way toothed sleeve 9 through the one-way toothed hole 8, the lower part of the inner hole of the one-way toothed sleeve 9 is provided with a ring groove 17, a piston 13 is arranged in the ring groove 17, the upper part of the ring groove 17 is provided with a liquid inlet hole 11 communicated with the top of the guide shoe 6, the lower part of the piston 13 is provided with an elastic split ring 12 which is half embedded in a step groove of the guide shoe 6, the outer side of the elastic split ring 12 is abutted against the lower part of the split ring 17, the lower part of the piston 13 is provided with a wedge ring, and the wedge ring of the piston 13 is pressed at the bottom of the wedge ring 12.
The top end of the inner hole of the guide shoe 6 is processed into a conical hole 10 for ball injection sealing.
The one-way tooth hole 8 and the one-way tooth sleeve 9 are positioned at the top of the guide shoe 6, an annular space higher than the height of the one-way tooth exists between the lower part of the vertebra sleeve 2 and the guide shoe 6, and a support sleeve 7 is arranged in the annular space.
The outer diameter of the rubber cylinder 3 is smaller than that of the push ring 4, and the rubber cylinder 3 is arranged above the push ring to prevent the rubber cylinder 3 from colliding with the inner wall of the casing pipe to cause damage when the rubber cylinder is lowered into the well.
The upper circumference of the slip 5 is provided with a plurality of slots.
A circle of fishing grooves 14 are formed in the upper portion of an inner hole of the taper sleeve 2 and used for fishing.
After the bridge plug is matched with a setting tool and enters a well together, after the designed setting depth is reached, a setting tool is triggered to enable a push cylinder of the setting tool to generate certain thrust, a setting shear pin 15 is sheared off, the push cylinder pushes a taper sleeve 2 to move downwards, further, a slip 5 is pushed to move downwards, the slip 5 is forced to expand outwards along a cutting seam and is tightly anchored with the inner wall of a casing, the taper sleeve 2 presses a rubber sleeve 3 to increase the deformation diameter and stick to the inner wall of the casing for sealing while the slip 5 moves downwards, a one-way tooth hole 8 in the taper sleeve 2 is meshed with a one-way tooth sleeve 9, the setting tool is lifted to pull a pull rod 1, a releasing shear pin 16 is broken off, the pull rod 1 is pulled out, and then perforation operation is completed and the setting tool is recovered.
After fracturing is finished, soluble balls are put into the well, the soluble balls are sealed on the taper holes 10 in a sitting mode, the pressure is applied to the well, pressure liquid enters the liquid inlet holes 11 to push the pistons 13 to go downwards, the wedge-shaped rings of the pistons 13 pry the elastic split rings 12 to separate from the guide shoes 6, axial constraint between the one-way gear sleeves 9 and the guide shoes 6 is relieved, the bridge plug is unsealed, the fishing grooves 14 are hooked through fishing tools to fish the bridge plug, when the bridge plug is stuck and cannot be fished, the drilling tool can be put into the well to drill the one-way gear sleeves, and the bridge plug is unsealed and then fished.
Claims (6)
1. The utility model provides a mechanical type is set and is sealed can be dragged for and to bore bridging plug, includes pull rod (1), its characterized in that: the pull rod (1) is connected with the guide shoe (6) through a releasing shear pin (16), the taper sleeve (2) is connected with the pull rod (1) through a setting shear pin (15), a slip (5) is connected between a conical surface below the taper sleeve (2) and a conical surface above the guide shoe (6), a push ring (4) and a rubber sleeve (3) are sequentially arranged above the slip (5), the rubber sleeve (3) and the push ring (4) are sleeved on a cylindrical outer circle of the taper sleeve (2), a one-way tooth hole (8) is processed in an inner hole of the taper sleeve (2), the taper sleeve (2) is connected with the one-way tooth sleeve (9) through the one-way tooth hole (8), a ring groove (17) is formed in the lower portion of the inner hole of the one-way tooth sleeve (9), a piston (13) is arranged in the ring groove (17), a liquid inlet hole (11) communicated with the top of the guide shoe (6) is formed in the upper portion of the ring groove (17), the lower portion of the wedge-shaped ring (13) is provided with an elastic embedding ring groove (12) in a step groove of the guide shoe (6), and a wedge-shaped ring groove (13) is arranged on the outer side of the lower portion of the piston (12), and a wedge-shaped ring groove (13) is pressed at the bottom of the wedge-shaped ring.
2. The mechanical setting salvageable drillable bridge plug of claim 1, wherein: the top end of the inner hole of the guide shoe (6) is processed into a conical hole (10).
3. The mechanical setting salvageable drillable bridge plug of claim 1, wherein: the unidirectional tooth hole (8) and the unidirectional tooth sleeve (9) are positioned at the top of the guide shoe (6), an annular space with a height higher than that of the unidirectional tooth exists between the lower part of the taper sleeve (2) and the guide shoe (6), and a support sleeve (7) is arranged in the annular space.
4. The mechanical setting salvageable drillable bridge plug of claim 1, wherein: the outer diameter of the rubber cylinder (3) is smaller than that of the push ring (4).
5. The mechanical setting salvageable drillable bridge plug of claim 1, wherein: the upper circumference of the slip (5) is provided with a plurality of slots.
6. The mechanical setting salvageable drillable bridge plug of claim 1, wherein: the upper part of the inner hole of the taper sleeve (2) is provided with a ring of fishing grooves (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221316476.2U CN217538647U (en) | 2022-05-30 | 2022-05-30 | Mechanical setting fishable drillable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221316476.2U CN217538647U (en) | 2022-05-30 | 2022-05-30 | Mechanical setting fishable drillable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217538647U true CN217538647U (en) | 2022-10-04 |
Family
ID=83440868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221316476.2U Expired - Fee Related CN217538647U (en) | 2022-05-30 | 2022-05-30 | Mechanical setting fishable drillable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217538647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537740A (en) * | 2023-06-19 | 2023-08-04 | 盘锦恒奥瑞佳实业有限公司 | Bridge plug capable of being fished for convenient setting |
-
2022
- 2022-05-30 CN CN202221316476.2U patent/CN217538647U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537740A (en) * | 2023-06-19 | 2023-08-04 | 盘锦恒奥瑞佳实业有限公司 | Bridge plug capable of being fished for convenient setting |
| CN116537740B (en) * | 2023-06-19 | 2024-02-13 | 盘锦恒奥瑞佳实业有限公司 | Bridge plug capable of being fished for convenient setting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221004 |