CN208669266U - A kind of short soluble bridge plug of minor diameter - Google Patents
A kind of short soluble bridge plug of minor diameter Download PDFInfo
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- CN208669266U CN208669266U CN201821232122.3U CN201821232122U CN208669266U CN 208669266 U CN208669266 U CN 208669266U CN 201821232122 U CN201821232122 U CN 201821232122U CN 208669266 U CN208669266 U CN 208669266U
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- slips
- bridge plug
- wrist guard
- wall
- packing element
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Abstract
A kind of short soluble bridge plug of minor diameter including central tube and is successively sheathed on spacer ring, the upper anchor assemblies, seal assembly, lower anchor assemblies, anticollision ring of the center pipe outer wall interaction connection；The seal assembly includes middle packing element, the wrist guard component for being movably connected on the middle packing element both ends outer wall, is movably connected on upper centrum and hypocentrum that the mirror symmetry of the wrist guard component is arranged；The wrist guard component includes being flexibly connected and the interior wrist guard at the middle packing element both ends, the outer wrist guard being flexibly connected with the interior wrist guard, the inner wall of the interior wrist guard is bonded with the outer wall of the middle packing element with inclined-plane, and the angle of the inclined-plane and the middle packing element end face is 70 °.The utility model solve soluble bridge plug easily exist during tripping in be hampered, the abnormal phenomenon of premature setting etc., be not easy premature setting, change bridge plug size, improve the dissolubility of bridge plug, blocked after avoiding the problem that its dissolution.
Description
Technical field
The utility model relates to soluble bridge plug fields, and in particular to a kind of short soluble bridge plug of minor diameter.
Background technique
In recent years, with the continuous decaying of the rapid development of China's economy and oil-gas field development and non-renewable resources,
And be increasingly valued by people for the exploitation of unconventional oil and gas, status and meaning as one can imagine.The unconventional oil in China
Gas resource very abundant, the potentiality of exploration are also very huge, but since its reservoir has extra-low permeability, low porosity and obvious cause
The features such as close, needs to improve multi-section multi-layer fracturing technique, especially horizontal well fracturing to improve its well yield
Technology, and bridge plug is the extremely important laminated distributor under well capping tools of horizontal well fracturing.
Currently, tool is transformed as a kind of novel shale gas pressure break layer and section in soluble bridge plug, using novel magnesium
Aluminum alloy materials, routine shale gas exploitation mainly uses outer diameter 103mm solubility bridge plug at present, and length reaches 560mm, and weight reaches
6.8kg.Since site technique limits, occurs a large amount of casing deformation situations in the construction process, cause soluble bridge plug in tripping in
Easily exist in the process be hampered, the abnormal phenomenon such as premature setting, and bridge plug dissolves insufficient, the blocking set that easily occurs dissolution in the later period
The risks such as the case where pipe causes construction period to lengthen, and operating cost increases.
Utility model content
The utility model provides a kind of short soluble bridge plug of minor diameter, solves soluble bridge plug pole during tripping in
Easily exist be hampered, the abnormal phenomenon of premature setting etc., be not easy premature setting, improve the dissolubility of bridge plug, after avoiding it from dissolving
Blocking channel.
The technical solution adopted in the utility model is as follows:
A kind of short soluble bridge plug of minor diameter, including central tube and be successively sheathed on the center pipe outer wall and live mutually
Spacer ring, the upper anchor assemblies, seal assembly, lower anchor assemblies, anticollision ring of dynamic connection；The seal assembly includes middle packing element, work
The dynamic wrist guard component for being connected to the middle packing element both ends outer wall, the mirror symmetry for being movably connected on the wrist guard component are arranged upper
Centrum and hypocentrum；The wrist guard component includes being flexibly connected with the interior wrist guard at the middle packing element both ends, with the interior wrist guard to live
The outer wrist guard of dynamic connection, the inner wall of the interior wrist guard are bonded with the outer wall of the middle packing element with inclined-plane, the inclined-plane with it is described in
The angle of packing element end face is 70 °.
The working principle and process of the technical program are as follows:
The solubility bridge plug is carried out igniting and is set by Bake 20# setting tool, while hydraulic seat also can be used
Envelope.During the work time, the top of Bake 20# setting tool or hydraulic setting device connection central tube, pushes spacer ring to transport downwards
It is dynamic, meanwhile, push anchor assemblies, upper cone, outer wrist guard, interior wrist guard, middle packing element, lower cone, anticollision ring to move downwardly together, in
Packing element and wrist guard component extend to the outside fitting sleeve during extruding, meanwhile, anchor assemblies are outside in the process of movement
It struts, anchor assemblies can tightly be stuck on casing wall and then limit other components and continue to move downward this moment；Packing element in thus
Due to continue it is subject to downward force expand deformation and set, and anchor assemblies due to by setting force and upper centrum and under
The influence of centrum can also make anchor assemblies strut outward and be stuck on casing wall, complete entire setting process.Spacer ring and anticollision
Ring is located at the both ends of central tube, and anchor assemblies and seal assembly are on the one hand fixed on center pipe outer wall；On the other hand, spacer ring is just
Bridge plug is placed downwards in pushing, and anticollision ring makes bridge plug be not easy to be hampered in advance during downwards, premature setting.
Further, the upper anchor assemblies include the upper slips for being movably connected on centrum, are located at upper slips outer wall use
In the slips tooth assembly of anchoring；The lower anchor assemblies include the lower slips for being movably connected on hypocentrum, are located at lower slips outer wall
Slips tooth assembly for anchoring；The upper slips and the lower slips include multiple slips monomers, the slips monomer
Outer wall is equipped with the slips ring recess that is mutually communicated, and the outer wall of upper slips and lower slips is equipped with for fixing being placed in for multiple slips monomers
Slips circle in slips ring recess.Setting tool push spacer ring so that push upper slips move down, and then push seal assembly, under
Slips and anticollision ring move down, and are moved to and set place, and spacer ring, which squeezes, pushes upper slips, and anticollision ring squeezes lower slips, slips
Circle fracture, slips monomer strut outward, are anchored to internal surface of sleeve pipe.
Further, the slips tooth assembly includes positioned at the slips tooth socket of upper slips and lower slips outer wall, is bonded in institute
State the ceramic cylinder tooth in slips tooth socket, slips tooth socket and ceramic cylinder tooth interference fit.With the pushing of spacer ring, gradually realize
It sets, slips circle is broken one by one during the depression process, and middle packing element deforms realization sealing, the ceramic cylinder being sticky on slips outward
Tooth is gradually engaged in the inner wall of casing, and the solubility bridge plug just forms about one in casing and uniformly distributed irreversible sets knot
Structure.
Further, the interior wrist guard outer wall is axially arranged with 16 along 8 open slots, the outer wrist guard outer wall edge is axially arranged with
A open slot, each open slot on the interior wrist guard are set on the outer wrist guard between every two adjacent open slot.
Interior wrist guard and outer the wrist guard expansible after setting are adjacent to casing, play the role of packing element in protection.The opening of interior wrist guard with it is outer
The opening of wrist guard is staggered, and cooperates.
Further, the middle position of the middle packing element inner wall is equipped with a ring-shaped groove convenient for the compression of middle packing element.
The ring-shaped groove can when middle packing element compresses buffer compression power so that middle packing element is easily deformable, and then be bonded casing.
Further, the upper centrum and the hypocentrum surface are equipped with the improvement upper slips matched with slips monomer
With the guide groove of lower slips eccentricity issues.Guide groove is provided on upper hypocentrum, on the one hand, the design of the guide groove can subtract
The weight of the light soluble bridge plug；On the other hand, the design of the guide groove is so that slips monomer is placed in guide groove, in turn
Improve the problem of upper slips and lower slips bias.
Further, the upper centrum and the hypocentrum are equipped at the outer wrist guard prevents cutting for premature setting
Nail.
Further, the middle packing element be can sol rubber, remaining original part is the soluble material of magnesium alloy.Set completion
Afterwards, pressure break can be carried out with overlying strata to bridge plug, after waiting a period of times, the slips on bridge plug dissolves, and is not enough to provide
Support force, bridge plug become to loosen, and bridge plug initially enters dissolution link, and after waiting several days time, the metal of entire bridge plug can be all
It has been dissolved that, middle glue bucket dissolution, last entire solvable bridge plug is only left insoluble ceramic particle.
Further, the outer diameter of the short soluble bridge plug of the minor diameter is 98mm, length 396mm, weight 3.6kg.It is existing
The parameter of soluble bridge plug in technology is that outer diameter 103mm, length 560mm, weight 6.8kg show since site technique limits
There is the bridge plug in technology to occur a large amount of casing deformation situations in the construction process, cause soluble bridge plug during tripping in easily
In the presence of be hampered, the abnormal phenomenon such as premature setting, and bridge plug dissolves that easily to occur dissolution insufficient in the later period, the case where blocking casing.
The advantages of soluble bridge plug can not only undertake the pressure difference of 70MPa in the utility model, and outer diameter is small, and length is short, light weight, keeps away
Exempting from the later period dissolves insufficient etc. problem.
Further, the anticollision ring is equipped with 45 ° of chamferings for guiding close to the center pipe end.The chamfering is just
It is moved down in the soluble bridge plug, reduces resistance.
The fitting inclined design of interior wrist guard and middle packing element is creatively 70 ° by the technical program, the inclined-plane and middle glue
The angle of cylinder end face is 70 °, soluble bridge plug compared to the prior art, and the outer diameter of the solubility bridge plug reduces, length contracts
Short, weight reduces, but soluble bridge plug needs to bear in setting process pressure difference 70MPa up and down, only by soluble bridge plug
Size become smaller and can not bear the pressure difference of 70MPa, but be 70 ° by the angle of the inclined-plane and middle packing element end face, upper centrum
The guide groove being equipped with hypocentrum outer wall, the soluble bridge plug that cooperation outer diameter, length, weight become smaller, so that the utility model
In soluble bridge plug can also bear the pressure difference of 70MPa.
In conclusion the beneficial effect of the utility model compared to the prior art is:
(1) compared to the prior art, the outer diameter of the short soluble bridge plug of the minor diameter is small, and length is short, light weight；It is suitable for
Solubility bridge plug caused by a large amount of casing deformations in practice of construction scene during tripping in easily presence be hampered, premature setting etc. it is different
Reason condition moves down convenient for the soluble bridge plug；The soluble bridge plug of light weight can solve the later period dissolution easily occur it is molten
Insufficient, the problem of blocking casing is solved, and then construction period is caused to lengthen, the problem of operating cost increases, and operating risk increases；
(2) inner wall of interior wrist guard is bonded with the outer wall of middle packing element with inclined-plane in the utility model, the inclined-plane and central tube
The angle of end face is 70 °；The guide groove that upper centrum and hypocentrum outer wall are equipped with；Cooperation outer diameter, length, weight become smaller solvable
Property bridge plug；Above three designs so that the soluble bridge plug that diameter, length, weight become smaller still can bear the pressure difference of 70MPa,
Complete realize sets effect；
(3) the solvable bridge plug flexible design, convenient for disassembly and assembly, size changes, and manufacturing cost reduces, and is suitable for promoting the use of.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the short soluble bridge plug of minor diameter in the utility model
Fig. 2 is a kind of cross-sectional view of the short soluble bridge plug of minor diameter in the utility model
In the figure, it is marked as 1- central tube, 2- spacer ring, 3- anticollision ring, packing element in 4-, the upper centrum of 5-, 6- hypocentrum, shield in 7-
Wrist, the outer wrist guard of 8-, 9- upper slips, 10- lower slips, 11- slips monomer, 12- slips ring recess, 13- slips circle, 14- slips tooth socket,
15- ceramic cylinder tooth, 16- ring-shaped groove, 17- guide groove, 18- shear pin.
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to Fig. 1-2 and
The utility model is described in further detail for specific embodiment.
Embodiment 1
A kind of short soluble bridge plug of minor diameter, including central tube 1 and to be successively sheathed on 1 outer wall of central tube mutual
Spacer ring 2, upper anchor assemblies, seal assembly, lower anchor assemblies, the anticollision ring 3 of flexible connection；The seal assembly includes middle packing element
4, the wrist guard component for being movably connected on the 4 both ends outer wall of middle packing element, the mirror symmetry for being movably connected on the wrist guard component are set
The upper centrum 5 set and hypocentrum 6；The wrist guard component includes being flexibly connected and the interior wrist guard 7 at middle 4 both ends of packing element and institute
The outer wrist guard 8 that interior wrist guard 7 is flexibly connected is stated, the inner wall of the interior wrist guard 7 is bonded with the outer wall of the middle packing element 4 with inclined-plane, institute
The angle for stating inclined-plane and middle 4 end face of packing element is 70 °.
Embodiment 2
Based on embodiment 1, the upper anchor assemblies include the upper slips 9 for being movably connected on centrum 5, are located at upper slips 9
Slips tooth assembly of the outer wall for anchoring；Under the lower anchor assemblies include the lower slips 10 for being movably connected on hypocentrum 6, are located at
Slips tooth assembly of 10 outer wall of slips for anchoring；The upper slips 9 and the lower slips 10 include multiple slips monomers 11,
The outer wall of the slips monomer 11 is equipped with 13 slot 12 of slips circle that is mutually communicated, and the outer wall of upper slips 9 and lower slips 10, which is equipped with, to be used
In the slips circle 13 of the multiple slips monomers 11 of fixation being placed in 13 slot 12 of slips circle.Setting tool pushes spacer ring 2 and then pushes
Upper slips 9 move down, and then seal assembly, lower slips 10 and anticollision ring 3 is pushed to move down, and are moved to and set place, every
Ring 2, which squeezes, pushes upper slips 9, and anticollision ring 3 squeezes lower slips 10, and slips circle 13 is broken, and slips monomer 11 is strutted outward, is anchored to
Internal surface of sleeve pipe.
Embodiment 3
Based on embodiment 1, the slips tooth assembly include positioned at 10 outer wall of upper slips 9 and lower slips slips tooth socket 14,
The ceramic cylinder tooth 15 being bonded in the slips tooth socket 14, slips tooth socket 14 and ceramic cylinder tooth 15 are interference fitted.With every
The pushing of ring 2 gradually realizes and sets that slips circle 13 is broken one by one during the depression process, and sealing is realized in deformation to middle packing element 4 outward,
The ceramic cylinder tooth 15 being sticky on slips is gradually engaged in the inner wall of casing, and the solubility bridge plug just forms one in casing
It is a uniformly distributed up and down irreversible to set structure.
Embodiment 4
Based on embodiment 1, interior 7 outer wall of wrist guard is along 8 open slots are axially arranged with, and outer 8 outer wall of wrist guard is along axial
Equipped with 16 open slots, each open slot on the interior wrist guard 7 is set to every two adjacent opening on the outer wrist guard 8
Between slot.Interior wrist guard 7 and outer wrist guard 8 expansible after setting are adjacent to casing, play the role of packing element 4 in protection.Interior wrist guard 7
It is being open to be staggered with outer wrist guard 8 opening, it cooperates.
Embodiment 5
Based on embodiment 1, the middle position of middle 4 inner wall of packing element is equipped with an annular convenient for the compression of middle packing element 4
Groove 16.The ring-shaped groove can middle packing element compress when buffer compression power so that middle packing element is easily deformable, and then fitting sle
Pipe.
Embodiment 6
Based on embodiment 1, the upper centrum 5 and 6 surface of the hypocentrum are equipped with and change with what slips monomer 11 matched
The guide groove 17 of kind 10 eccentricity issues of upper slips 9 and lower slips.On the one hand, the design of the guide groove 17 can mitigate it is described can
The weight of dissolubility bridge plug；On the other hand, the design of the guide groove 17 is so that part slips monomer 11 is placed in guide groove 17, into
And improve the problem of 10 bias of upper slips 9 and lower slips, while slips circle 13 is squeezed by upper centrum 5 and hypocentrum 6 to disconnected
It splits, and then realizes slips anchoring.
Embodiment 7
Based on embodiment 1, the upper centrum 5 and the hypocentrum 6 are equipped at the outer wrist guard 8 prevents premature setting
Shear pin 18.
Embodiment 8
Based on embodiment 1, the middle packing element 4 be can sol rubber, remaining original part is the soluble material of magnesium alloy.It sets
After the completion, pressure break can be carried out with overlying strata to bridge plug, after waiting a period of times, the slips on bridge plug dissolves, and is not enough to
Support force is provided, bridge plug becomes to loosen, and bridge plug initially enters dissolution link, after waiting several days time, the metal meeting of entire bridge plug
It has all dissolved, middle glue bucket dissolution, last entire solvable bridge plug is only left insoluble ceramic particle.
Embodiment 9
Based on embodiment 1, the outer diameter of the short soluble bridge plug of the minor diameter is 98mm, length 396mm, weight 3.6kg.
The parameter of solubility bridge plug in the prior art is outer diameter 103mm, length 560mm, weight 6.8kg, since site technique limits,
There are a large amount of casing deformation situations in the construction process in bridge plug in the prior art, leads to soluble bridge plug pole during tripping in
Easily exist be hampered, the abnormal phenomenon such as premature setting, and bridge plug dissolves that easily to occur dissolution insufficient in the later period, blocks the feelings of casing
Condition.Soluble bridge plug can not only undertake the pressure difference of 70MPa in the utility model, and outer diameter is small, and length is short, light weight it is excellent
Point avoids the later period from dissolving insufficient etc. problem.
Embodiment 10
Based on embodiment 1, the anticollision ring 3 is equipped with 45 ° of chamferings for guiding close to 1 end of central tube.It is described
Chamfering moves down convenient for the soluble bridge plug, reduces resistance.
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (10)
1. a kind of short soluble bridge plug of minor diameter, it is characterised in that: including central tube (1) and be successively sheathed on the center
Manage spacer ring (2), the upper anchor assemblies, seal assembly, lower anchor assemblies, anticollision ring (3) of the connection of (1) outer wall interaction；It is described
Seal assembly includes middle packing element (4), the wrist guard component for being movably connected on middle packing element (4) both ends outer wall, is movably connected on institute
State upper centrum (5) and the hypocentrum (6) of the mirror symmetry setting of wrist guard component；The wrist guard component is described including being movably connected on
The interior wrist guard (7) at middle packing element (4) both ends, the outer wrist guard (8) being flexibly connected with the interior wrist guard (7), the interior wrist guard (7) it is interior
Wall is bonded with the outer wall of the middle packing element (4) with inclined-plane, and the angle of the inclined-plane and middle packing element (4) end face is 70 °.
2. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the upper anchor assemblies include
It is movably connected on the upper slips (9) of centrum (5), is located at slips tooth assembly of upper slips (9) outer wall for anchoring；It is described to cast anchor
Determine component to include the lower slips (10) for being movably connected on hypocentrum (6), be located at slips tooth of lower slips (10) outer wall for anchoring
Component；The upper slips (9) and the lower slips (10) include multiple slips monomers (11), the slips monomer (11) it is outer
Wall is equipped with the slips ring recess (12) being mutually communicated, and the outer wall of upper slips (9) and lower slips (10) is equipped with for fixing multiple cards
The slips circle (13) of watt monomer (11) being placed in slips ring recess (12).
3. a kind of short soluble bridge plug of minor diameter according to claim 2, it is characterised in that: the slips tooth assembly includes
Positioned at the slips tooth socket (14) of upper slips (9) and lower slips (10) outer wall, the ceramics circle being bonded in the slips tooth socket (14)
Column tooth (15), slips tooth socket (14) and ceramic cylinder tooth (15) interference fit.
4. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: interior wrist guard (7) outer wall
Along being axially arranged with 8 open slots, outer wrist guard (8) outer wall is along being axially arranged with 16 open slots, on the interior wrist guard (7)
Each open slot is set on the outer wrist guard (8) between every two adjacent open slot.
5. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: middle packing element (4) inner wall
Middle position be equipped with one convenient for middle packing element (4) compression ring-shaped groove (16).
6. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the upper centrum (5) and institute
It states hypocentrum (6) surface and is equipped with the improvement upper slips (9) matched with slips monomer (11) and lower slips (10) eccentricity issues
Guide groove (17).
7. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the upper centrum (5) and institute
It states hypocentrum (6) and is equipped with the shear pin (18) for preventing premature setting at the outer wrist guard (8).
8. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the middle packing element (4) is can
Sol rubber, remaining original part are the soluble material of magnesium alloy.
9. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the short solubility of minor diameter
The outer diameter of bridge plug is 98mm, length 396mm, weight 3.6kg.
10. a kind of short soluble bridge plug of minor diameter according to claim 1, it is characterised in that: the anticollision ring (3) is close
Central tube (1) end is equipped with 45 ° of chamferings for guiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232122.3U CN208669266U (en) | 2018-08-01 | 2018-08-01 | A kind of short soluble bridge plug of minor diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232122.3U CN208669266U (en) | 2018-08-01 | 2018-08-01 | A kind of short soluble bridge plug of minor diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208669266U true CN208669266U (en) | 2019-03-29 |
Family
ID=65832181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821232122.3U Active CN208669266U (en) | 2018-08-01 | 2018-08-01 | A kind of short soluble bridge plug of minor diameter |
Country Status (1)
| Country | Link |
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| CN (1) | CN208669266U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441741A (en) * | 2020-05-08 | 2020-07-24 | 中国石油天然气集团有限公司 | Soluble pumpable open type temporary bridge plug tool and use method thereof |
| CN115012876A (en) * | 2022-07-01 | 2022-09-06 | 西南石油大学 | Small-diameter large-deformation single-slip type soluble bridge plug |
| CN115467640A (en) * | 2022-09-17 | 2022-12-13 | 大庆市亚盛油田技术开发有限公司 | Small-diameter drillable plugging bridge plug |
-
2018
- 2018-08-01 CN CN201821232122.3U patent/CN208669266U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441741A (en) * | 2020-05-08 | 2020-07-24 | 中国石油天然气集团有限公司 | Soluble pumpable open type temporary bridge plug tool and use method thereof |
| CN111441741B (en) * | 2020-05-08 | 2023-09-29 | 中国石油天然气集团有限公司 | Soluble pumpable open temporary plugging bridge plug tool and use method |
| CN115012876A (en) * | 2022-07-01 | 2022-09-06 | 西南石油大学 | Small-diameter large-deformation single-slip type soluble bridge plug |
| CN115012876B (en) * | 2022-07-01 | 2023-08-11 | 西南石油大学 | Small-diameter large-deformation single slip type soluble bridge plug |
| CN115467640A (en) * | 2022-09-17 | 2022-12-13 | 大庆市亚盛油田技术开发有限公司 | Small-diameter drillable plugging bridge plug |
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Address after: 618000 Community 3, Fenghuang Village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weiwodun Petroleum Technology Co.,Ltd. Address before: 618300 group 3, Fenghuang village, Xiaohan Town, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN WEWODON CHEMICAL CO.,LTD. |
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| CP03 | Change of name, title or address |