CN110017117A - A kind of solubility bridge plug - Google Patents
A kind of solubility bridge plug Download PDFInfo
- Publication number
- CN110017117A CN110017117A CN201910425350.5A CN201910425350A CN110017117A CN 110017117 A CN110017117 A CN 110017117A CN 201910425350 A CN201910425350 A CN 201910425350A CN 110017117 A CN110017117 A CN 110017117A
- Authority
- CN
- China
- Prior art keywords
- ring
- slips
- bridge plug
- cone
- central tube
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000005299 abrasion Methods 0.000 claims abstract description 10
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 14
- 238000004090 dissolution Methods 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
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
Landscapes
- 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)
- Closures For Containers (AREA)
Abstract
The invention discloses a kind of soluble bridge plugs, including central tube, packing element, protection ring, upper opening ring, under shed ring, screwed ring, cone, snap ring, slips, abrasion resistant particles, slip insert, lower body, lower locating piece.The present invention overcomes prior art disadvantage, packing element is removed in overall structure, outside slip insert and abrasion resistant particles, remaining part is made of a kind of soluble magnesium alloy material, and packing element also has solubility, can gradually dissolve in certain solution environmental, until entire bridge plug is completely dissolved, it is normally carried out underground subsequent construction, has saved construction time and cost；In addition to this, for conventional bridge plug structure, the solvable bridge plug structure is simple, and number of components is few and size is smaller, greatly reduces dissolution time.
Description
Technical field
The present invention relates to bridge plug technology field, in particular to a kind of soluble bridge plugs.
Background technique
Currently, hyposmosis at home and abroad well fracturing construction in generally use bridge plug, the capping tools such as packer into
The construction of row staged fracturing.Since bridge plug has working procedure few, packing position is accurate, is segmented the features such as series is more, therefore in reality
It is widely used in the construction of border.Wherein detachable bridge plug and packer require to carry out complicated execute-in-place, or even exist
It is difficult out, cause to damage internal surface of sleeve pipe in use process, needs the problems such as carrying out casing repairing；Currently used bridge plug
Type has cast iron bridge plug, composite bridge plug, big orifice bridge plug and detachable bridge plug.In these capping tools except detachable bridge plug it
Outside, the bridge plug of remaining type requires largely bore after pressing crack construction to remove；Although wherein big orifice bridge plug is in pressing crack construction
It does not need temporarily to bore afterwards and remove, but throttling can be formed on production channel and be unfavorable for mining, removed so the later period also carries out boring
Operation.Also, as unconventional oil/gas well horizontal section length is continuously increased, brill wears into this and difficulty is also just increasing.
Existing bridge plug is mostly to be connected by specific connector with setting tool, the setting force of setting tool release
It is applied on connector by piston rod, bridge plug packing element is made to be squeezed compression swelling under setting force until being close to internal surface of sleeve pipe, meanwhile,
Slips divides valve to be gradually opened, and inclined slip insert is slowly inlayed into internal surface of sleeve pipe to keep packing element to be in by compression moulding state, finally
Complete the work of bridge plug down-hole plugging.Currently used speed bores composite bridge plug and cast iron bridge plug and big orifice bridge plug and all there is brill
Grinder sequence so seriously affecting construction period, while increasing construction cost and difficulty.
Summary of the invention
The technical problem to be solved by the present invention is to overcome prior art disadvantage, provide a kind of soluble bridge plug, structure is closed
Reason solves the problems, such as that conventional bridge plug needs to bore and removes, after completing fracturing work, bridge plug voluntarily dissolves, no using safety and stability
It needs lower drilling tool brill to remove, operating cost and risk is greatly saved.
In order to solve the above technical problems, technical solution provided by the invention are as follows: a kind of solubility bridge plug, including central tube,
It is packing element, protection ring, upper opening ring, under shed ring, screwed ring, cone, snap ring, slips, abrasion resistant particles, slip insert, lower body, lower fixed
Position block, the central tube are hollow tubulose, and the center pipe outer wall right end is equipped with step, and left end is set in the center pipe outer wall
Have an external screw thread for connection, be successively socketed from right to left in the center pipe outer wall packing element, protection ring, upper opening ring and under open
Choma, is equipped with hollow cavity close to center pipe outer wall side on the socket packing element, and the central tube left end passes through screwed ring fastening
It connects, cone is connected through a screw thread on the screwed ring outer wall, the cone is hollow convex mesa-shaped left small and right large, the snap ring
It is socketed on the left end of cone, the slips right end is socketed on cone left end against snap ring, and the slips main body is bar shape
And internal is hollow cavity left small and right large, the slips left end connects lower body, is equipped in the stepped hole of the left end of the lower body
The through-hole of perforation slips is equipped in lower locating piece, the lower body and lower locating piece, the lower body right side is circumferentially uniformly set
There is step, the slips left end is equipped with the groove matched with step, is uniformly provided with abrasion resistant particles on the slips right end outer wall,
Be uniformly provided with slip insert on the outer wall of the slips left end, the central tube, protection ring, upper opening ring, under shed ring, screwed ring,
Cone, snap ring, slips, lower body and lower locating piece material be all made of soluble magnesium alloy, the packing element is using soluble rubber.
Further, the right end of the cone is assembled against under shed ring.
Further, the slips right end and cone left end set are connected in interference fit.
Further, the lower positioning block main body is tubulose, radially even on the inclined surface of the lower body left end to be equipped with six
A through hole, radially even set is passed through there are six six corresponding with the through hole on the lower locating piece left end outer surface
Logical threaded hole, the perforation threaded hole are used to be threadedly coupled by shear pin with the connector for penetrating through bridge plug inner cavity.
Further, the slips right end face is equipped with the uniform line of rabbet joint, divides valve end to be formed.
The advantages of the present invention over the prior art are that: soluble bridge plug of the invention connects simple real in structure
With number of components is few and size is smaller, greatly reduces dissolution time, and structure connects reasonably stability, meets envelope when pressing crack construction
It is stifled to require；Maximum advantage is that have solubility in performance, after the completion of underground is blocked, without carrying out brill mill, is only needed
Suitable dissolution environment is provided, all components will voluntarily dissolve, therefore saved a large amount of brill mill construction time and at
This, which is mainly characterized by, and completes above-mentioned closure work, and after pressing crack construction, do not need to be bored
It is suitable for being widely used to promote except work.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is structural schematic diagram internal in the present invention.
Fig. 3 is the structural schematic diagram of protection ring in the present invention.
Fig. 4 is the structural schematic diagram of upper opening ring in the present invention.
Fig. 5 is the structural schematic diagram of under shed ring in the present invention.
Fig. 6 is the structural schematic diagram of cone in the present invention.
Fig. 7 is the structural schematic diagram of slips in the present invention.
Fig. 8 is the structural schematic diagram of lower body in the present invention.
It is as shown in the figure: 1, central tube, 2, packing element, 3, protection ring, 4, upper opening ring, 5, under shed ring, 6, screwed ring, 7, cone
Body, 8, snap ring, 9, slips, 10, abrasion resistant particles, 11, slip insert, 12, lower body, 13, lower locating piece, 14, step, 15, groove,
16, divide valve end, 17, through hole, 18, perforation threaded hole.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
The present invention in the specific implementation, a kind of solubility bridge plug, including central tube 1, packing element 2, protection ring 3, upper opening ring
4, under shed ring 5, screwed ring 6, cone 7, snap ring 8, slips 9, abrasion resistant particles 10, slip insert 11, lower body 12, lower locating piece 13,
The central tube 1 is hollow tubulose, and the 1 outer wall right end of central tube is equipped with step, and left end is equipped on 1 outer wall of central tube
For the external screw thread of connection, on 1 outer wall of central tube from right to left successively be socketed packing element 2, protection ring 3, upper opening ring 4 and under
Split ring 5, the main function of the protection ring 3, upper opening ring 4 and under shed ring 5 be when packing element 2 is squeezed compression swelling, it is above
The packing element that component can generate certain deformation (due to being opening) prevention viscous state overflows, on the socket packing element 2 in
1 outer wall side of heart pipe is equipped with hollow cavity, and 1 left end of central tube is fastenedly connected by screwed ring 6, on 6 outer wall of screwed ring
It is connected through a screw thread cone 7, the cone 7 is hollow convex mesa-shaped left small and right large, and the snap ring 8 is socketed in the left end of cone 7
On, 9 right end of slips is socketed on 7 left end of cone against snap ring 8, and the effect of snap ring 8 is to prevent bridge plug during going into the well,
Slips and cone occur relative motion in advance and block bridge plug, and 9 main body of slips is bar shape and inside is left small and right large
Hollow cavity, 9 left end of slips connect lower body 12, are equipped with lower locating piece 13, institute in the stepped hole of the left end of the lower body 12
The through-hole that perforation slips 9 is equipped in lower body 12 and lower locating piece 13 is stated, 12 right side of lower body is circumferentially uniformly provided with platform
Rank 14,9 left end of slips are equipped with the groove 15 matched with step 14, are uniformly provided on the 9 right end outer wall of slips wear-resisting
Particle 10, the effect of abrasion resistant particles 10 are due to largest outside diameter herein, so can be reduced internal surface of sleeve pipe during bridge plug is gone into the well
To the friction damage of packing element and rest part, it is uniformly provided with slip insert 11 on the 9 left end outer wall of slips, the effect of slip insert is
In setting process, inlaying into internal surface of sleeve pipe prevents slips from integrally retracting, and guarantees sealing and pressure-bearing, the central tube 1, protection ring
3, the material of upper opening ring 4, under shed ring 5, screwed ring 6, cone 7, snap ring 8, slips 9, lower body 12 and lower locating piece 13 is adopted
With soluble magnesium alloy, the packing element 2 is using soluble rubber.
The right end of the cone 7 is assembled against under shed ring 5, and 9 right end of slips and 7 left end of cone set are connected in interference and match
It closes, lower 13 main body of locating piece is tubulose, it is radially even on the 12 left end inclined surface of lower body to set there are six through hole 17,
It is radially even on the 13 left end outer surface of lower locating piece to set there are six six perforations spiral shell corresponding with the through hole 17
Pit 18, the perforation threaded hole 18 are used to be threadedly coupled by shear pin with the connector for penetrating through bridge plug inner cavity, the card
Watt 9 right end faces are equipped with the uniform line of rabbet joint 16, divide valve end to be formed.
The working principle of the invention: in use, the solvable bridge plug is connected by specific connector with setting tool,
When underground carries out closure work, specific connector passes through from lower locating piece 13 among central tube 1, connector and lower positioning
After six threaded holes calibration on block 13, connector is set to be connected with lower locating piece 13 by being threaded into shear pin；Work as seat
When the setting force of envelope tool release is applied on connector by piston rod, due to being equipped with platform between lower locating piece 13 and lower body 12
Rank, therefore lower body 12 moves right together with slips 9, setting tool continue to output pulling force, slips 9 along 7 inclined-plane of cone to the right after
Reforwarding is dynamic, and central tube 1 is moved downward relative to cone 7, and the responsive to axial force due to cone 7 by slips 9, screwed ring 6 is squeezed
Axial shrinkage makes the unidirectional self-lock to the left of central tube 1 after compressive strain, has also just lockked the trend that central tube 1 moves right；Slips 9 is right
End, which is divided at valve, gradually opens, while packing element 2 being deformed and plays sealing function until being adjacent to internal surface of sleeve pipe, at this time slips 9
On slip insert 11 imbedded make in internal surface of sleeve pipe slips 9 keep squeeze 2 state of packing element, central tube 1 also by with screwed ring 6
Self-locking function keep squeeze 2 state of packing element；Slips 9 and 1 self-locking function of central tube play fixed 2 compressive state of packing element at this time
Effect completes down-hole plugging work to this solvable bridge plug.
Since in addition to packing element, slip insert and abrasion resistant particles, remaining part can by one kind in the solvable bridge plug overall structure
It is formed with property magnesium alloy materials, and packing element has solubility, can gradually dissolve in certain solution environmental, until entire bridge
Plug is completely dissolved, and is normally carried out underground subsequent construction, has been saved construction time and cost；In addition to this, relative to routine
For bridge plug structure, the solvable bridge plug structure is simple, and number of components is few and size is smaller, greatly reduces dissolution time.
The present invention and its embodiments have been described above, this description is no restricted, shown in the drawings
Only one of embodiments of the present invention, actual structure is not limited to this.All in all if the ordinary skill of this field
Personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution phase
As frame mode and embodiment, be within the scope of protection of the invention.
Claims (5)
1. it is a kind of solubility bridge plug, including central tube (1), packing element (2), protection ring (3), upper opening ring (4), under shed ring (5),
Screwed ring (6), cone (7), snap ring (8), slips (9), abrasion resistant particles (10), slip insert (11), lower body (12), lower locating piece
(13), it is characterised in that: the central tube (1) is hollow tubulose, and central tube (1) the outer wall right end is equipped with step, described
Left end is equipped with the external screw thread for connection on central tube (1) outer wall, is successively socketed glue from right to left on central tube (1) outer wall
Cylinder (2), protection ring (3), upper opening ring (4) and under shed ring (5), close central tube (1) outer wall one on the socket packing element (2)
Side is equipped with hollow cavity, and central tube (1) left end is fastenedly connected by screwed ring (6), passes through spiral shell on screwed ring (6) outer wall
Line connects cone (7), and the cone (7) is hollow convex mesa-shaped left small and right large, and the snap ring (8) is socketed in a left side for cone (7)
On end, slips (9) right end is socketed on cone (7) left end against snap ring (8), slips (9) main body be bar shape and
Inside is hollow cavity left small and right large, and slips (9) left end connects lower body (12), the step of the left end of the lower body (12)
Lower locating piece (13) are equipped in hole, the through-hole of perforation slips (9) is equipped in the lower body (12) and lower locating piece (13), it is described
Lower body (12) right side is circumferentially uniformly provided with step (14), and slips (9) left end is recessed equipped with matching with step (14)
Slot (15) is uniformly provided with abrasion resistant particles (10) on slips (9) the right end outer wall, uniformly sets on the outer wall of slips (9) left end
Have slip insert (11), the central tube (1), protection ring (3), upper opening ring (4), under shed ring (5), screwed ring (6), cone
(7), the material of snap ring (8), slips (9), lower body (12) and lower locating piece (13) is all made of soluble magnesium alloy, the packing element
(2) using soluble rubber.
2. a kind of soluble bridge plug according to claim 1, it is characterised in that: the right end of the cone (7), which abuts down, to be opened
Choma (5) assembling.
3. a kind of soluble bridge plug according to claim 1, it is characterised in that: slips (9) right end and cone (7) are left
End cap is connected in interference fit.
4. a kind of soluble bridge plug according to claim 1, it is characterised in that: lower locating piece (13) main body is pipe
Shape, it is radially even on lower body (12) the left end inclined surface to set that there are six through hole (17), lower locating piece (13) left ends
It is radially even on outer surface to set the perforation there are six six perforation threaded holes (18) corresponding with the through hole (17)
Threaded hole (18) is used to be threadedly coupled by shear pin with the connector for penetrating through bridge plug inner cavity.
5. a kind of soluble bridge plug according to claim 1, it is characterised in that: slips (9) right end face is equipped with equal
The even line of rabbet joint (16) divides valve end to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425350.5A CN110017117A (en) | 2019-05-21 | 2019-05-21 | A kind of solubility bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910425350.5A CN110017117A (en) | 2019-05-21 | 2019-05-21 | A kind of solubility bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110017117A true CN110017117A (en) | 2019-07-16 |
Family
ID=67194196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910425350.5A Pending CN110017117A (en) | 2019-05-21 | 2019-05-21 | A kind of solubility bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110017117A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905443A (en) * | 2019-12-04 | 2020-03-24 | 中国石油大学(华东) | Soluble metal sealing fracturing bridge plug |
| CN111101888A (en) * | 2019-10-09 | 2020-05-05 | 中国石油化工股份有限公司华东油气分公司 | Novel soluble bridge plug |
| CN111648739A (en) * | 2020-06-29 | 2020-09-11 | 中国石油天然气集团有限公司 | Rubber sleeve protection type soluble bridge plug for fracturing |
| CN111779465A (en) * | 2020-04-22 | 2020-10-16 | 中国石油天然气股份有限公司 | Soluble fracturing ball seat |
| CN112031699A (en) * | 2020-09-17 | 2020-12-04 | 中国石油天然气股份有限公司 | Slip assembly capable of being rapidly milled and used for downhole tool |
| CN112240176A (en) * | 2020-09-15 | 2021-01-19 | 重庆交通大学 | Soluble bridge plug |
| CN113414332A (en) * | 2021-06-21 | 2021-09-21 | 四川捷贝通能源科技有限公司 | Fully soluble slip tooth material and preparation method and application thereof |
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| US20160138363A1 (en) * | 2013-11-22 | 2016-05-19 | Target Completions, LLC | IPacker Bridge Plug with Slips |
| CN108104765A (en) * | 2018-02-09 | 2018-06-01 | 四机赛瓦石油钻采设备有限公司 | A kind of solvable bridge plug of single deck tape-recorder whole pottery |
| CN108343395A (en) * | 2018-02-02 | 2018-07-31 | 西南石油大学 | A kind of single deck tape-recorder watt big orifice exempts to bore mill composite bridge plug and its sets method |
| WO2018174902A1 (en) * | 2017-03-24 | 2018-09-27 | Vertechs Oil & Gas Technology Usa Company Llc | Dissolvable bridge plug |
| CN208073423U (en) * | 2018-04-10 | 2018-11-09 | 重庆地质矿产研究院 | Single slip type soluble bridge plug |
| CN109519146A (en) * | 2018-12-26 | 2019-03-26 | 四川长宁天然气开发有限责任公司 | A kind of solvable bridge plug of small size |
| CN208792974U (en) * | 2018-09-21 | 2019-04-26 | 天津市玛特瑞科技有限公司 | A kind of dual-grip, can bore remove, solvable bridge plug |
| CN210033370U (en) * | 2019-05-21 | 2020-02-07 | 卢晓东 | Soluble bridge plug |
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2019
- 2019-05-21 CN CN201910425350.5A patent/CN110017117A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160138363A1 (en) * | 2013-11-22 | 2016-05-19 | Target Completions, LLC | IPacker Bridge Plug with Slips |
| WO2018174902A1 (en) * | 2017-03-24 | 2018-09-27 | Vertechs Oil & Gas Technology Usa Company Llc | Dissolvable bridge plug |
| CN108343395A (en) * | 2018-02-02 | 2018-07-31 | 西南石油大学 | A kind of single deck tape-recorder watt big orifice exempts to bore mill composite bridge plug and its sets method |
| CN108104765A (en) * | 2018-02-09 | 2018-06-01 | 四机赛瓦石油钻采设备有限公司 | A kind of solvable bridge plug of single deck tape-recorder whole pottery |
| CN208073423U (en) * | 2018-04-10 | 2018-11-09 | 重庆地质矿产研究院 | Single slip type soluble bridge plug |
| CN208792974U (en) * | 2018-09-21 | 2019-04-26 | 天津市玛特瑞科技有限公司 | A kind of dual-grip, can bore remove, solvable bridge plug |
| CN109519146A (en) * | 2018-12-26 | 2019-03-26 | 四川长宁天然气开发有限责任公司 | A kind of solvable bridge plug of small size |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101888A (en) * | 2019-10-09 | 2020-05-05 | 中国石油化工股份有限公司华东油气分公司 | Novel soluble bridge plug |
| CN110905443A (en) * | 2019-12-04 | 2020-03-24 | 中国石油大学(华东) | Soluble metal sealing fracturing bridge plug |
| CN110905443B (en) * | 2019-12-04 | 2021-09-21 | 中国石油大学(华东) | Soluble metal sealing fracturing bridge plug |
| CN111779465A (en) * | 2020-04-22 | 2020-10-16 | 中国石油天然气股份有限公司 | Soluble fracturing ball seat |
| CN111648739A (en) * | 2020-06-29 | 2020-09-11 | 中国石油天然气集团有限公司 | Rubber sleeve protection type soluble bridge plug for fracturing |
| CN112240176A (en) * | 2020-09-15 | 2021-01-19 | 重庆交通大学 | Soluble bridge plug |
| CN112031699A (en) * | 2020-09-17 | 2020-12-04 | 中国石油天然气股份有限公司 | Slip assembly capable of being rapidly milled and used for downhole tool |
| CN112031699B (en) * | 2020-09-17 | 2022-07-19 | 中国石油天然气股份有限公司 | Slip assembly capable of being rapidly milled and used for downhole tool |
| CN113414332A (en) * | 2021-06-21 | 2021-09-21 | 四川捷贝通能源科技有限公司 | Fully soluble slip tooth material and preparation method and application thereof |
| CN113414332B (en) * | 2021-06-21 | 2022-05-13 | 四川捷贝通能源科技有限公司 | Fully soluble slip tooth material and preparation method and application thereof |
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