CN207161042U - One kind hydrolysis bridging plug - Google Patents
One kind hydrolysis bridging plug Download PDFInfo
- Publication number
- CN207161042U CN207161042U CN201720989742.0U CN201720989742U CN207161042U CN 207161042 U CN207161042 U CN 207161042U CN 201720989742 U CN201720989742 U CN 201720989742U CN 207161042 U CN207161042 U CN 207161042U
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- central tube
- bridging plug
- retaining ring
- hydrolysis
- packing element
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Abstract
The utility model discloses one kind to hydrolyze bridging plug, including：The central tube of hollow structure, packing element and single deck tape-recorder watt and cone are set on the drum outer wall of center；Build the pressure ball, is contained in the diameter-changing cavity of the central tube；First retaining ring, it is set on the left of the packing element outside central tube, leaves space between central tube on the inside of its left part, inner side is provided with broached-tooth design；Second retaining ring, it is set in the space of central tube and the first locking interannular, and broached-tooth design is equipped with its inside and outside wall；Cone, it is fixed on outside the central tube on the right side of packing element by the first shear pin, and its bottom section is taper, is inserted in the gap between central tube and slips.The utility model can realize that express delivery is installed, simple to operate, efficient；Bridging plug structure uses special magnesium base alloy simultaneously, automatic degraded, bores and grinds without the later stage.
Description
Technical field
Petroleum works underground work technology is the utility model is related to, more particularly to a kind of bridging plug sets component.
Background technology
In the separate stratum fracfturing technical field of oil extraction in oil field, bridging plug is used in the sealing of Oil/gas Well.Will using cable or tubing string
It is delivered to pit shaft precalculated position, produces thrust in top connection by gunpowder explosion, mechanical setting tool or hydraulic pressure, draws
Power acts on tension force stick, and packing element is pressed by acting on up and down, Expansion sealing, while tension force increases, and tension force stick fracture, sets work
Tool departs from bridging plug, and locking device plays efficiency, and slips is embedded in inwall, packing element Expansion sealing, completes to set.
Existing frequently-used is unidirectional dual-grip structure bridging plug or big orifice bridging plug based on composite, restting,
Perforation and pressing crack construction terminate rear, it is necessary to disposable bore of all bridging plugs brill in pit shaft be ground off, to realize the latus rectum of pit shaft.Its
Good airproof performance, resistance to pressure difference are high, large carrying capacity, but its easily set halfway, set it is complicated, while the later stage salvage and add work
Industry cost and construction risk, secondary pollution can be produced to stratum, while also extend the activity duration, thus developed a kind of without boring
Mill, quickly set, be simple to operate, time-saving and efficiency bridging plug it is particularly important.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned.There is provided it is a kind of can Fast Installation hydrolysis bridging plug, operation
Simply, efficiently.
Technical scheme provided by the utility model is：The central tube of hollow structure, packing element and single deck tape-recorder watt and cone are arranged
On the drum outer wall of center；Build the pressure ball, is contained in the diameter-changing cavity of the central tube；First retaining ring, it is set in outside central tube
Packing element on the left of, leaving space between central tube on the inside of its left part, inner side is provided with broached-tooth design；First retaining ring, it is set in
On the left of packing element outside central tube, space is left between central tube on the inside of its left part, inner side is provided with broached-tooth design；Second retaining ring,
It is set in the space of central tube and the first locking interannular, and broached-tooth design is equipped with its inside and outside wall；Cone, it passes through
One shear pin is fixed on outside the central tube on the right side of packing element, and its bottom section is taper, the gap inserted between central tube and slips
In.
Guide shoe, the central tube bottom is connected in, and its top bag contacts on the drum outer wall of center with the slips, it is described
Guide shoe is provided with pumping ring, and the guide shoe can act on the active force transmission of the central tube to slips.
Back ring, it is installed in outside the central tube by the second shear pin, is bonded with first retaining ring, when second
When shearing shear pin is cut, the back ring can relatively described central tube slip.
Pushing cylinder, its lower end are set in the central tube upper end, are in contact with the back ring, can be with respect to center under external force effect
Cylinder slides.
Joint is sent into, its lower end is installed on the central tube inwall by the first shear pin, and its upper end, which is connected with, opens
Power rod.
The center tube inner chamber, which has to inner diameter central, extends baffle plate, on the left of diameter-changing cavity, can block the ball that builds the pressure and turn left
End is slided, and the guarantee ball that builds the pressure together enters with central tube.
The slips outer surface is provided with equally distributed stress concentration groove vertically, it is ensured that slips uniform force, and it is described
Slips top is engraved structure at stress groove；The slips outer wall is provided with uniform annular recess, can be with the ring of internal surface of sleeve pipe
Shape projection matches.
The left part inwall of first retaining ring is provided with buttless thread structure, and with the spiral shell of the second retaining ring outer wall
Line teeth directional is opposite；The central tube is provided with buttless thread structure with the described first locking loop interface, and is locked with described second
The screw thread teeth directional of tight ring inwall is opposite.Fixed by the second retaining ring and first retaining ring and central tube, holding pushes negative
Lotus, prevent resilience.
The packing element is degradable high polymer material；The slips, cone, the ball that builds the pressure, first and second retaining ring are magnesium-based
Alloy material, it is degradable in the presence of the underground water of shaft bottom, salvaged without boring mill.
0 shape circle is provided between the packing element inner ring and central tube, the packing element right-hand member is provided with three protection rings, further really
The gap of packing element described in confidential letter and the central tube.
Beneficial effect described in the utility model
The utility model is set using single deck tape-recorder watt and the second retaining ring, and the ball that builds the pressure is is pre-filled with, achievable Fast Installation,
It is simple to operate, efficient；Bridging plug structure uses special magnesium base alloy, and packing element uses high polymer material, under groundwater effect
Degraded, ground without boring.
Brief description of the drawings
Fig. 1 is bridging plug schematic diagram of the present utility model.
Fig. 2 is slips schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
As shown in figure 1, bridging plug includes the central tube 4 of hollow structure, there is diameter-changing cavity inside, can accommodate the ball 7 that builds the pressure；Central tube
Packing element 12 and single deck tape-recorder watt 20 are arranged with 4 outer wall, the left side of packing element 12 is arranged with the first retaining ring 11, its left part inner side and center
Space is left between pipe, inner side is provided with broached-tooth design；Second retaining ring 10, it is set between the retaining ring 11 of central tube 12 and first
In space, broached-tooth design is equipped with its inside and outside wall；Cone 18, it is fixed on the right side of packing element 12 by the first shear pin 19
The outer wall of central tube 4 on, its bottom section is taper, is inserted in the gap between central tube 4 and slips 20.
Guide shoe 22, the bottom of institute's central tube 4 is connected in, and its top bag contacts on the outer wall of central tube 4 with slips 20, institute
State guide shoe 22 and be provided with pumping ring 21, guide shoe 22 can act on the active force transmission of central tube 4 to slips 20.
Back ring 9, it is installed in outside central tube 4 by the second shear pin 8, is pasted with the first retaining ring 11 and tight lock ring 10
Close, when the second shearing shear pin 8 is cut, the back ring 9 can be slided with respect to central tube 4.
Pushing cylinder 3, its lower end are set in the upper end of central tube 4, are in contact with back ring 9, can be slided under external force effect with respect to central tube
It is dynamic.
Joint 2 is sent into, its lower end is installed on the inwall of central tube 4 by the 3rd shear pin 5, and its upper end is connected with tension force
Rod.
The inner chamber of central tube 4, which has to inner diameter central, extends baffle plate 6, and on the left of diameter-changing cavity, baffle plate 6 can block the ball 7 that builds the pressure
Slided toward left end, the guarantee ball 7 that builds the pressure together enters with central tube 4.
As shown in Fig. 2 the outer surface of single deck tape-recorder watt 20 is provided with equally distributed stress concentration groove vertically, it is ensured that slips stress
Uniformly, and the top of slips 20 is engraved structure at stress groove；The outer wall of slips 20 is provided with uniform annular recess, can with sleeve pipe
The annular protrusion of wall matches, so as to be embedded in internal surface of sleeve pipe after the fragmentation of slips 20.
The left part inwall of first retaining ring 11 is provided with buttless thread structure, and with the thread of the outer wall of the second retaining ring 10
To opposite；Central tube 4 is provided with buttless thread structure with the contact surface of the first retaining ring 11, and with the inwall of the second retaining ring 10
Screw thread teeth directional is opposite.In work, the second retaining ring 10 of stress only occurs unidirectionally not with respect to the retaining ring 11 of central tube 4 or first
Reversible displacement, when helicitic texture is engaged, the second retaining ring 10 is fixed with the first retaining ring 11 and central tube 4, and holding pushes load,
Prevent resilience.
Packing element is degradable high polymer material；Slips 20, cone 18, the first retaining ring 11, guide shoe 22, build the pressure ball 7, back ring
9th, the second retaining ring 10 is magnesium base alloy material, degradable in the presence of the underground water of shaft bottom, is salvaged without boring mill.
0 shape circle 13 is provided between packing element inner ring 14 and central tube 4, the right-hand member of packing element 12 is provided with three protection ring 15-17, enters one
Step ensures cartridge 12 and the gap of central tube 4.
In the present embodiment, in work, bridging plug and corresponding setting tool are sent to well using cable or coiled tubing
Cylinder precalculated position, setting tool generation pressure and pulling force, two active forces, wherein pressure is set to act on pushing cylinder by gunpowder explosion
3, another pulling force effect is in tension force stick 1.Pushing cylinder 3 is pressed to back ring 9, and the second shear pin 8 is cut, the drive of pushing cylinder 3 back ring 9,
Second retaining ring 10, the first retaining ring 11 are descending, while are pressed above packing element 12；Meanwhile another pulling force passes through tension force
Rod 1 drives top connection 2, central tube 4 and guide shoe 22 up successively, and guide shoe 22 promotes slips 20 to move up, and slips 20 extrudes cone 18,
First shear pin 19 is cut, cone 18 is slided with respect to central tube 4, and the protection ring 12-14 below packing element 12 produces pressure
Power, expand packing element 12, while above-mentioned part continues to extrude slips 20, as pulling force reaches certain value, slips acts on about 20
Power, which reaches to crush after rupture value, to be embedded on internal surface of sleeve pipe.Packing element 12 is by two-way pressure expansion and sealing sleeve pipe.Second locking
Helicitic texture on 10 inside and outside wall of ring is engaged with the helicitic texture on the outer wall of central tube 12, the inwall of the first retaining ring 11 respectively, the
One retaining ring central tube 12 and the first retaining ring 11, complete to set.When gunpowder blast action power continues increase, active force is by the
One shearing shear pin 5 is cut, and top connection 2, pushing cylinder 3 and bridging plug depart from, and go out with setting tool from well.When needing to bridging plug top
During payzone pressure break, pressure break can be sealed without pitching.After the completion of construction, bridging plug component can degrade under groundwater effect, nothing
Brill mill need to subsequently be salvaged.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
1. one kind hydrolysis bridging plug, it is characterised in that including：
The central tube of hollow structure, packing element and single deck tape-recorder watt and cone are set on the center drum outer wall；
Build the pressure ball, is contained in the diameter-changing cavity of the central tube；
First retaining ring, it is set on the left of the packing element outside central tube, leaves space between central tube on the inside of its left part, inner side is set
There is broached-tooth design；
Second retaining ring, it is set in the space of central tube and the first locking interannular, and sawtooth knot is equipped with its inside and outside wall
Structure；
Cone, it is fixed on outside the central tube on the right side of packing element by the first shear pin, and its bottom section is taper, inserts center
In gap between pipe and slips.
2. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
Guide shoe, the central tube bottom is connected in, and its top bag contacts on the drum outer wall of center with the slips, the guide shoe
It is provided with pumping ring.
3. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
Back ring, it is installed in outside the central tube by the second shear pin, is bonded with first retaining ring.
4. hydrolysis bridging plug according to claim 3, it is characterised in that also include：
Pushing cylinder, its lower end are set in the central tube upper end, are in contact with the back ring.
5. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
Joint is sent into, its lower end is installed on the central tube inwall by the 3rd shear pin, its upper end connection tension force stick.
6. hydrolysis bridging plug according to claim 1, in addition to：
The center tube inner chamber, which has to inner diameter central, extends baffle plate, blocks the ball that builds the pressure.
7. hydrolysis bridging plug according to claim 1, in addition to：
The slips outer surface is provided with equally distributed stress concentration groove vertically, and the slips top is to engrave at stress groove
Hollow structure；
The slips outer wall is provided with uniform annular recess, can match with the annular protrusion of internal surface of sleeve pipe.
8. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
The left part inwall of first retaining ring is provided with buttless thread structure, and with the thread of the second retaining ring outer wall
To opposite；
The central tube is provided with buttless thread structure with the described first locking loop interface, and with the second retaining ring inwall
Screw thread teeth directional it is opposite.
9. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
The packing element is degradable high polymer material；The slips, cone, the ball that builds the pressure, first and second retaining ring are that magnesium-based is closed
Gold.
10. hydrolysis bridging plug according to claim 1, it is characterised in that also include：
0 shape circle is provided between the packing element inner ring and central tube, the packing element right-hand member is provided with protection ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989742.0U CN207161042U (en) | 2017-08-09 | 2017-08-09 | One kind hydrolysis bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720989742.0U CN207161042U (en) | 2017-08-09 | 2017-08-09 | One kind hydrolysis bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161042U true CN207161042U (en) | 2018-03-30 |
Family
ID=61716333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720989742.0U Active CN207161042U (en) | 2017-08-09 | 2017-08-09 | One kind hydrolysis bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161042U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138955A (en) * | 2018-08-29 | 2019-01-04 | 中国石油集团渤海钻探工程有限公司 | A kind of solvable fracturing sliding bush of variable diameter spherically seated full-bore |
| CN109403897A (en) * | 2018-12-29 | 2019-03-01 | 博德世达（天津）能源科技有限公司 | The outer limiting device of tubing and casing |
| CN109611055A (en) * | 2018-12-07 | 2019-04-12 | 柳江 | A kind of passive solvable bridge plug of disintegration formula |
| CN110107240A (en) * | 2019-04-29 | 2019-08-09 | 成都英诺思科技有限公司 | A kind of pumped downhole ring and pumped downhole device |
| CN110107241A (en) * | 2019-04-29 | 2019-08-09 | 成都英诺思科技有限公司 | A kind of pumped downhole method |
| CN112647891A (en) * | 2020-12-24 | 2021-04-13 | 中石化石油工程技术服务有限公司 | Full-soluble bridge plug |
-
2017
- 2017-08-09 CN CN201720989742.0U patent/CN207161042U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138955A (en) * | 2018-08-29 | 2019-01-04 | 中国石油集团渤海钻探工程有限公司 | A kind of solvable fracturing sliding bush of variable diameter spherically seated full-bore |
| CN109138955B (en) * | 2018-08-29 | 2020-07-03 | 中国石油集团渤海钻探工程有限公司 | Reducing ball seat type full-bore soluble fracturing sliding sleeve |
| CN109611055A (en) * | 2018-12-07 | 2019-04-12 | 柳江 | A kind of passive solvable bridge plug of disintegration formula |
| CN109611055B (en) * | 2018-12-07 | 2021-05-18 | 山东兆鑫石油工具有限公司 | Passive disintegration type soluble bridge plug |
| CN109403897A (en) * | 2018-12-29 | 2019-03-01 | 博德世达（天津）能源科技有限公司 | The outer limiting device of tubing and casing |
| CN110107240A (en) * | 2019-04-29 | 2019-08-09 | 成都英诺思科技有限公司 | A kind of pumped downhole ring and pumped downhole device |
| CN110107241A (en) * | 2019-04-29 | 2019-08-09 | 成都英诺思科技有限公司 | A kind of pumped downhole method |
| CN110107240B (en) * | 2019-04-29 | 2021-07-20 | 成都英诺思科技有限公司 | Underground pumping ring and underground pumping device |
| CN112647891A (en) * | 2020-12-24 | 2021-04-13 | 中石化石油工程技术服务有限公司 | Full-soluble bridge plug |
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