CN114961641A - Soluble bridge plug with high dissolving speed - Google Patents
Soluble bridge plug with high dissolving speed Download PDFInfo
- Publication number
- CN114961641A CN114961641A CN202210513947.7A CN202210513947A CN114961641A CN 114961641 A CN114961641 A CN 114961641A CN 202210513947 A CN202210513947 A CN 202210513947A CN 114961641 A CN114961641 A CN 114961641A
- Authority
- CN
- China
- Prior art keywords
- guide shoe
- bridge plug
- pipe
- pull rod
- outside
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 238000004090 dissolution Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims abstract 2
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 239000002195 soluble material Substances 0.000 claims description 3
- 244000137852 Petrea volubilis Species 0.000 claims description 2
- 238000010008 shearing Methods 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011012 sanitization Methods 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a soluble bridge plug with high dissolution speed. Relates to the technical field of oil field downhole tools. The lower part of a check ring at the lower part of the rubber cylinder is a cleaning pipe, a compression spring is arranged between the check ring at the lower part of the cleaning pipe and a guide shoe, a shaft and a shearing pipe are arranged at the inner side of the rubber cylinder, a protruding shearing nail I is arranged at the middle part of the shaft and is blocked at the outer side of the shearing pipe, and the length direction of an integrated structure formed by the shaft and the shearing pipe is propped against the check rings at the two sides. The invention has the following beneficial effects: oil absorption silver and abrasive paper on the cleaning tube are with the inside pipe wall sanitization, the packing element descends the pressurized inflation, paste at the clean up inside pipe wall, improve sealed effect, release mechanism and runner design make one-way tooth at first dissolve, the bridging plug deblocking, liquid can get into each part of bridging plug fast, accelerate the solution rate, liquid gets into inside each part from each blind hole in the well simultaneously, improve the solution rate, and each part solution time is not many, shorten whole bridging plug solution time, the efficiency of action is improved.
Description
The technical field is as follows:
the invention relates to the technical field of oil field downhole tools, in particular to a soluble bridge plug with high dissolution speed.
Background art:
in the process of oil gas development, particularly in the development process of unconventional oil gas, compact oil gas, low-permeability oil gas and the like, a large number of multi-stage staged fracturing technologies with perforating guns and soluble bridge plugs are adopted, and the fracturing bridge plugs are used as isolation tools between construction sections.
The invention content is as follows:
in order to solve the problem of low operation efficiency of the conventional soluble bridge plug, the invention provides the soluble bridge plug with high dissolution speed.
The technical scheme of the invention is as follows: a soluble bridge plug with high dissolving speed comprises a pull rod, a push plate, a taper sleeve, a slip, a rubber cylinder and a guide shoe, wherein the structure is the basic structure of a common bridge plug.
The vertebral body is connected with the guide shoe through one-way teeth, the upper part of the vertebral body is provided with a ring groove III, the pull rod is provided with an external communication channel at the ring groove III part to be communicated with the outside of the pull rod, and a release mechanism is arranged at the part communicated with the outside of the pull rod; the guide shoe middle part is opened there is annular II, and the guide shoe is opened at annular II has outer intercommunication way and the outside intercommunication of guide shoe, installs release mechanism with the outside intercommunication position of guide shoe, and annular II upper portion is opened has the passageway that overflows, overflows passageway and slips inboard space intercommunication.
Releasing mechanism includes the piston hole of opening on pull rod, guide shoe, and piston hole inboard and outer intercommunication say the intercommunication, and the downthehole piston that is equipped with of piston passes through sealing washer clearance fit with the piston hole to be connected, and piston one side bores has the counter bore, is equipped with compression spring and shear pin II in the counter bore, and shear pin II position, the pull rod, the guide shoe go out annular I, and shear pin II has generally to stretch into annular I in, installs compression spring between piston and the piston hole bottom surface.
The slips are provided with a plurality of blind holes from inside to outside, the taper sleeve is provided with a plurality of blind holes from the inside of the ring groove III to outside, and the guide shoe is provided with a plurality of blind holes communicated with the external communicating channel.
An oil absorption cotton sliver and abrasive paper are bonded on the outer side of the cleaning tube. The pull rod, the taper sleeve, the guide shoe, the slip, the retainer ring, the push plate and the rubber cylinder are all made of soluble materials.
The invention has the following beneficial effects: when the setting slips moves downwards, firstly, the cleaning pipe is pushed, the outer diameter of the cleaning pipe is pressed to be large, an inner wall of a sleeve is cleaned up by an oil absorption cotton sliver and abrasive paper on the cleaning pipe, the slips continuously descend, a shear pin I is cut off, a rubber cylinder descends and expands under pressure, the inner wall of the sleeve is pasted on the clean inner wall of the sleeve, the sealing effect is improved, the release mechanism and the flow channel design enable one-way teeth to be firstly dissolved, the bridge plug is deblocked, liquid can rapidly enter each component of the bridge plug, the dissolving speed is accelerated, meanwhile, the liquid in the well enters each component from each blind hole, the dissolving speed is improved, the dissolving time of each component is short, the dissolving time of the whole bridge plug is shortened, and the acting efficiency is improved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is a schematic view of the structure of the cleaning tube of the present invention.
In the figure, 1-a pull rod, 2-a taper sleeve, 3-a slip, 4-a rubber barrel, 5-a guide shoe, 6-a retaining ring, 7-a push plate, 8-a shaft, 9-a shearing pipe, 10-a shearing nail I, 11-a piston, 12-a shearing nail II, 13-an annular groove I, 14-a piston hole, 15-an external communicating channel, 16-an annular groove II, 17-an annular groove III, 18-a releasing mechanism, 19-a cleaning pipe, 20-a blind hole, 21-an overflowing channel, 22-an oil absorption cotton sliver and 23-abrasive paper.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings:
the soluble bridge plug with high dissolving speed comprises a pull rod 1, a push plate 7, a taper sleeve 2, a slip 3, a rubber cylinder 4 and a guide shoe 5, wherein the structure is a basic structure of a common bridge plug, the bridge plug setting structure per se is not described in the technical scheme of the invention, the rubber cylinder 4 is sleeved at the outer circle part of the guide shoe 5, the rubber cylinder 4 is positioned at the lower side of the slip 3, retainer rings 6 are arranged on both sides of the rubber cylinder 4, a cleaning pipe 19 is arranged on the lower part of the retainer ring 6 at the lower part of the rubber cylinder 4, a compression spring is arranged between the retainer ring 6 at the lower part of the cleaning pipe 19 and the guide shoe 5, a shaft 8 and a shearing pipe 9 are arranged on the inner side of the rubber cylinder 4, a protruding shear pin I10 is arranged in the middle part of the shaft 8 and is blocked outside the shearing pipe 9, and the length direction of an integrated structure consisting of the shaft 8 and the shearing pipe 9 is propped against the retainer rings 6 on both sides.
The vertebral body 2 is connected with the guide shoe 5 through one-way teeth, the upper part of the vertebral body 2 is provided with a ring groove III17, the pull rod 1 is provided with an external communicating channel 15 at the ring groove III17 part to be communicated with the outside of the pull rod 1, and the communicating part with the outside of the pull rod 1 is provided with a release mechanism 18; the middle part of the guide shoe 5 is provided with a ring groove II16, the guide shoe 5 is provided with an outer communicating channel 15 in the ring groove II16 to be communicated with the outside of the guide shoe 5, a releasing mechanism 18 is arranged at the position communicated with the outside of the guide shoe 5, the upper part of the ring groove II16 is provided with a flow passage 21, and the flow passage 21 is communicated with the inner space of the slips 3.
The release mechanism 18 comprises a piston hole 14 formed in the pull rod 1 and the guide shoe 5, the inner side of the piston hole 14 is communicated with an outer communication channel 15, a piston 11 is arranged in the piston hole 14 and is in clearance fit connection with the piston hole 14 through a sealing ring, a counter bore is drilled in one side of the piston 11, a compression spring and a shear pin II12 are arranged in the counter bore, the position of the shear pin II12 is that a ring groove I13 is formed in the pull rod 1 and the guide shoe 5, the shear pin II12 generally extends into the ring groove I13, and the compression spring is arranged between the piston 11 and the bottom surface of the piston hole 14.
The slip 3 is provided with a plurality of blind holes 20 from inside to outside, the taper sleeve 2 is provided with a plurality of blind holes 20 from the inside to outside of the ring groove III17, and the guide shoe 5 is provided with a plurality of blind holes 20 communicated with the outer communicating channel 15.
An oil absorption cotton sliver 22 and sand paper 23 are adhered on the outer side of the cleaning tube 19.
The pull rod 1, the taper sleeve 2, the guide shoe 5, the slip 3, the retainer ring 6, the push plate 7 and the rubber cylinder 4 are all made of soluble materials.
When the setting slip 3 moves downwards, the cleaning pipe 19 is pushed firstly, the compressed outer diameter of the cleaning pipe 19 is once large, the oil absorption cotton sliver 22 and the abrasive paper 23 on the cleaning pipe 19 clean the inner wall of the sleeve, the slip 3 continuously descends to cut off the shear pin I10, the rubber cylinder 4 descends to be compressed and expanded to be attached to the cleaned inner wall of the sleeve, and the sealing effect is improved.
The fracturing is carried out after the bridge plug is placed at a specified position, the fracturing pressure cuts off the shear pin II12, the piston 11 is in a floating state and is pressed in the piston hole 14 under the fracturing pressure, after the fracturing is finished, the fracturing pressure disappears, the piston 11 is pushed out of the piston hole 14 under the action of the compression spring, the upper outer communicating channel and the lower outer communicating channel 15 are communicated, the liquid in the well is driven to enter the one-way tooth part connected with the taper sleeve 2 and the guide shoe 5 from the outer communicating channels 15 by the pressure difference between the upper stratum and the lower stratum separated by the rubber tube 4, the size of the one-way tooth is small, the one-way tooth is dissolved firstly, the bridge plug is unsealed, the liquid can enter each part of the bridge plug quickly, the dissolving speed is accelerated, meanwhile, the liquid in the well enters each part from each blind hole 20, the dissolving speed is improved, the dissolving time of each part is short, the dissolving time of the whole bridge plug is shortened, and the acting efficiency is improved.
Claims (6)
1. The utility model provides a soluble bridge plug that solution rate is fast, includes pull rod (1), push pedal (7), taper sleeve (2), slips (3), packing element (4) and guide shoe (5), its characterized in that: rubber sleeve (4) cover is in guide shoe (5) excircle position, rubber sleeve (4) are located slips (3) downside, rubber sleeve (4) both sides all are equipped with retaining ring (6), retaining ring (6) lower part of rubber sleeve (4) lower part is for clean pipe (19), be equipped with compression spring between retaining ring (6) of clean pipe (19) lower part and guide shoe (5), rubber sleeve (4) inboard is equipped with axle (8) and cuts pipe (9), the middle part of axle (8) is equipped with outstanding shear pin I (10) and keeps off in cutting pipe (9) outside, an organic whole structure length direction that axle (8) and cut pipe (9) are constituteed pushes up on retaining ring (6) of both sides.
2. A soluble bridge plug having a fast dissolution rate according to claim 1, wherein: the vertebral body (2) is connected with the guide shoe (5) through one-way teeth, the upper part of the vertebral body (2) is provided with a ring groove III (17), the pull rod (1) is provided with an external communication channel (15) at the ring groove III (17) to be communicated with the outside of the pull rod (1), and a release mechanism (18) is arranged at the part communicated with the outside of the pull rod (1); the middle part of the guide shoe (5) is provided with a ring groove II (16), the guide shoe (5) is provided with an outer communicating channel (15) communicated with the outside of the guide shoe (5) at the ring groove II (16), a releasing mechanism (18) is installed at the position communicated with the outside of the guide shoe (5), the upper part of the ring groove II (16) is provided with an overflowing channel (21), and the overflowing channel (21) is communicated with the inner side space of the slip (3).
3. A soluble bridge plug having a fast dissolution rate according to claim 2, wherein: release mechanism (18) include at pull rod (1), piston hole (14) of opening on guide shoe (5), piston hole (14) inboard and outer intercommunication way (15) intercommunication, be equipped with piston (11) in piston hole (14) and pass through sealing washer clearance fit with piston hole (14) and be connected, the counter bore has been bored to piston (11) one side, be equipped with compression spring and shear pin II (12) in the counter bore, shear pin II (12) position, pull rod (1), guide shoe (5) go up and open annular I (13), shear pin II (12) have generally stretch into in annular I (13), install compression spring between piston (11) and piston hole (14) bottom surface.
4. A soluble bridge plug having a fast dissolution rate according to claim 1 or 2, wherein: the slip (3) is provided with a plurality of blind holes (20) from inside to outside, the taper sleeve (2) is provided with a plurality of blind holes (20) from the inside to outside of the ring groove III (17), and the guide shoe (5) is provided with a plurality of blind holes (20) communicated with the outer communicating channel (15).
5. A soluble bridge plug having a fast dissolution rate according to claim 1, wherein: an oil absorption cotton sliver (22) and sand paper (23) are bonded on the outer side of the cleaning tube (19).
6. A soluble bridge plug having a fast dissolution rate according to claim 1, wherein: the pull rod (1), the taper sleeve (2), the guide shoe (5), the slip (3), the retainer ring (6), the push plate (7) and the rubber cylinder (4) are all made of soluble materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210513947.7A CN114961641B (en) | 2022-05-12 | 2022-05-12 | Soluble bridge plug with high dissolution speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210513947.7A CN114961641B (en) | 2022-05-12 | 2022-05-12 | Soluble bridge plug with high dissolution speed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114961641A true CN114961641A (en) | 2022-08-30 |
| CN114961641B CN114961641B (en) | 2024-02-09 |
Family
ID=82971842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210513947.7A Active CN114961641B (en) | 2022-05-12 | 2022-05-12 | Soluble bridge plug with high dissolution speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114961641B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892378A (en) * | 2023-09-11 | 2023-10-17 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1803537C (en) * | 1991-04-22 | 1993-03-23 | Институт Геологии И Разведки Нефтяных И Газовых Месторождений | Squeeze cementing tool for placing cement bridging plugs |
| WO2019090602A1 (en) * | 2017-11-09 | 2019-05-16 | 成都维泰油气能源技术有限公司 | Dissolvable bridge plug |
| CN112096339A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Automatic packing device for casing |
| CN112127834A (en) * | 2020-09-15 | 2020-12-25 | 张军 | Soluble bridge plug |
| CN215444015U (en) * | 2021-04-27 | 2022-01-07 | 大庆达晟石油科技有限公司 | Composite soluble bridge plug |
| CN114458237A (en) * | 2022-01-19 | 2022-05-10 | 张淞源 | Multifunctional soluble bridge plug |
-
2022
- 2022-05-12 CN CN202210513947.7A patent/CN114961641B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1803537C (en) * | 1991-04-22 | 1993-03-23 | Институт Геологии И Разведки Нефтяных И Газовых Месторождений | Squeeze cementing tool for placing cement bridging plugs |
| WO2019090602A1 (en) * | 2017-11-09 | 2019-05-16 | 成都维泰油气能源技术有限公司 | Dissolvable bridge plug |
| CN112096339A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Automatic packing device for casing |
| CN112127834A (en) * | 2020-09-15 | 2020-12-25 | 张军 | Soluble bridge plug |
| CN215444015U (en) * | 2021-04-27 | 2022-01-07 | 大庆达晟石油科技有限公司 | Composite soluble bridge plug |
| CN114458237A (en) * | 2022-01-19 | 2022-05-10 | 张淞源 | Multifunctional soluble bridge plug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892378A (en) * | 2023-09-11 | 2023-10-17 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
| CN116892378B (en) * | 2023-09-11 | 2023-12-19 | 大庆信辰油田技术服务有限公司 | Soluble bridge plug special for oil and gas well production increase |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114961641B (en) | 2024-02-09 |
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