CN208502731U - A kind of solvable bridge plug of minor diameter - Google Patents
A kind of solvable bridge plug of minor diameter Download PDFInfo
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- CN208502731U CN208502731U CN201821232127.6U CN201821232127U CN208502731U CN 208502731 U CN208502731 U CN 208502731U CN 201821232127 U CN201821232127 U CN 201821232127U CN 208502731 U CN208502731 U CN 208502731U
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- slips
- bridge plug
- central tube
- wrist guard
- minor diameter
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Abstract
The utility model relates to a kind of solvable bridge plugs of minor diameter, including bridge plug ontology, the outer diameter of bridge plug ontology is 95mm, bridge plug ontology includes central tube, one end of central tube is arranged with throw-out collar, the other end is arranged with anticollision ring, throw-out collar is limited by the position limiting structure on central tube, anticollision ring is connected through a screw thread with central tube, central tube throw-out collar between anticollision ring, successively it is arranged with upper slips, upper cone, first outer wrist guard, wrist guard in first, first packing element, spacer ring, second packing element, wrist guard in second, second outer wrist guard, lower cone, lower slips, upper slips and lower slips are monoblock type slips, the utility model is a kind of solvable bridge plug of minor diameter, outer diameter using monoblock type slips and bridge plug only has 95mm, when encountering casing deformation in pressing crack construction, the risk that bridge plug tripping in is hampered can be effectively reduced, guarantee pressure break Construction is gone on smoothly.
Description
Technical field
The utility model relates to pressing crack construction technical field of tools more particularly to a kind of solvable bridge plugs of minor diameter.
Background technique
Currently, with the rapid development of society, demand for energy is continuously increased.Conventional gas and oil resource is constantly reduced,
Unconventional petroleum resources will be exploited largely, and the unconventional petroleum resources furthermore verified at present are very rich, mainly some causes
Close shale gas, shale oil and coal bed gas etc..But unconventional petroleum resources are faced with hyposmosis even ultralow permeability etc. and open
It raises difficult questions topic, the recovery ratio for how improving Low permeable oil and gas reservoirs is increasingly becoming domestic and international oil and gas development field urgent problem.
Cable composite bridge plug perforation connection is widely used at present and makees staged fracturing technology as the development scheme for improving well yield.But it is applying
It after the industry that works, needs lower tool to carry out brill and removes, increase construction period and cost, and encounter casing deformation in the construction process
The case where when, bridge plug tripping in is difficult, is unable to reach construction layer position.
Utility model content
The purpose of this utility model is that: when for above-mentioned the case where encountering casing deformation in the construction process, under bridge plug
The problem of entering difficulty, being unable to reach construction layer position, the utility model provide a kind of solvable bridge plug of minor diameter.
The technical solution adopted in the utility model is as follows:
A kind of solvable bridge plug of minor diameter, including bridge plug ontology, it is characterised in that: the outer diameter of the bridge plug ontology is 95mm,
The bridge plug ontology includes central tube, and one end of the central tube is arranged with throw-out collar, and the other end is arranged with anticollision ring, the throw-out collar
By the limit of position limiting structure on central tube, the anticollision ring is connected through a screw thread with central tube, in the throw-out collar of central tube to preventing
It hits between ring, is successively arranged with upper slips, upper cone, the first outer wrist guard, wrist guard, the first packing element, spacer ring, the second glue in first
Cylinder, wrist guard, the second outer wrist guard, lower cone, lower slips in second, the upper slips and lower slips are monoblock type slips, described the
One packing element and the second packing element are made of solvable rubber, the central tube, anticollision ring, throw-out collar, upper slips, upper cone, outside first
Wrist guard, wrist guard in first, spacer ring, wrist guard, the second outer wrist guard, lower cone, lower slips are all made of soluble metal and are made in second.
The utility model is a kind of solvable bridge plug of minor diameter, and the outer diameter using monoblock type slips and bridge plug only has 95mm, when
When encountering casing deformation in pressing crack construction, the risk that bridge plug tripping in is hampered can be effectively reduced, guarantees the smooth of pressing crack construction
It carries out.
Further, the inner wall of the upper slips and lower slips is respectively arranged with mutually fits with the conical surface of upper cone and lower cone
The fitting surface matched.
Further, the outer wall of the upper slips and lower slips is evenly distributed with 8 grooves radially, and described 8
Slips is divided into 8 slips areas by groove.
Further, 4 slips teeth are fixedly connected in each slips area, and the slips tooth uses ceramic system
At.
Further, the equally distributed anti-tooth butt of 8 circumferential directions is connected on the anticollision ring.
Further, the upper end of the central tube is provided with 8 equally distributed blind holes.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1. the utility model is a kind of solvable bridge plug of minor diameter, structure is simple, and lowering velocity is fast when in use, and bridge plug is maximum
Outer diameter is 95mm, when encountering casing deformation the case where, can effectively reduce the risk that bridge plug tripping in is hampered, guarantee pressing crack construction
Go on smoothly, be not easy the card that is hampered, can with locking device protect set load, the setting of double packing elements further increases
The leakproofness of the utility model, the utility model use monoblock type double card tile structure, and teeth directional is on the contrary, realize the reversible lock of bridge plug
Fixed, to keep setting load, pressure change also can guarantee that good seal, pressurized slips can tightly be stung with internal surface of sleeve pipe
It closes, improves the leakproofness and stability of the bridge plug.
2. by this solvable bridge plug design, central tube, spacer ring, throw-out collar, interior wrist guard, outer wrist guard, cone, slips and anticollision ring
It can be dissolved naturally under the operating condition of shaft bottom, packing element is made of solvable rubber, can also be dissolved, be can be shortened naturally under the operating condition of shaft bottom
Construction period is realized and simplifies fracturing technology, reduced well cost, saves completion time, while the bridge plug can be in situation not with pressure
Lower installation gas production wellhead and tripping in completion tubular column complete fractured horizontal well gas testing completion practice, greatly shorten construction period, drop
Low complex process degree has cut down well control safety risk.
3. the mode of giving up of bridge plug is that top shear pin is given up, structure of giving up and process of giving up are simple and reliable.
Detailed description of the invention
Fig. 1 is the utility model structure chart；
In the figure, it is marked as 1- central tube, 2- throw-out collar, 3- upper slips, 4- slips tooth, 5- upper cone, the outer wrist guard of 6- first, 7-
Wrist guard in first, the first packing element of 8-, 9- spacer ring, the second packing element of 10-, wrist guard in 11- second, the outer wrist guard of 12- second are bored under 13-
Body, 14- lower slips, 15- anticollision ring, the anti-tooth butt of 16-, 17- bridge plug ontology, 18- slips area, 19- groove.
Specific embodiment
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
It elaborates below with reference to Fig. 1 to the utility model.
Embodiment 1
As shown in Figure 1, a kind of solvable bridge plug of minor diameter, including bridge plug ontology 17, it is characterised in that: the bridge plug ontology 17
Outer diameter be 95mm, the bridge plug ontology 17 include central tube 1, one end of the central tube 1 is arranged with throw-out collar 2, another end cap
Equipped with anticollision ring 15, the throw-out collar 2 passes through spiral shell with central tube 1 by the position limiting structure limit on central tube 1, the anticollision ring 15
Line connection, central tube 1 throw-out collar 2 between anticollision ring 15, be successively arranged with upper slips 3, upper cone 5, the first outer wrist guard 6,
Wrist guard 7 in first, the first packing element 8, spacer ring 9, wrist guard 11 in the second packing element 10, second, the second outer wrist guard 12, lower cone 13, under
Slips 14, the upper slips 3 and lower slips 14 are monoblock type slips, and first packing element 8 and the second packing element 10 use solvable rubber
Glue is made, the central tube 1, anticollision ring 15, throw-out collar 2, upper slips 3, upper cone 5, wrist guard 7 in the first outer wrist guard 6, first, every
Wrist guard 11, the second outer wrist guard 12, lower cone 13, lower slips 14 are all made of soluble metal and are made in ring 9, second.
The utility model is a kind of solvable bridge plug of minor diameter, use the outer diameter of monoblock type slips and bridge plug ontology 17 for
95mm can effectively reduce the risk that bridge plug tripping in is hampered when encountering casing deformation in pressing crack construction, guarantee pressing crack construction
Go on smoothly.
Embodiment 2
According to embodiment 1, as shown in Figure 1, when using the utility model, using setting tool to bridge plug ontology 17 every
Ring 9, slips, packing element applied force make slips opening be stuck in internal surface of sleeve pipe, packing element expanded after being squeezed and be adjacent to casing formed it is close
Thus envelope is realized in shaft bottom after 1 inner hole of ball-off bridge plug central tube and is layered, is finally completed pressing crack construction.
Embodiment 3
According to embodiment 1, as shown in Figure 1, the slips of this bridge plug is monoblock type slips, each slips outer wall radially
It is provided with an equally distributed groove 19, in the setting process of bridge plug ontology 17, slips splits along groove 19 is radial, is divided into
8 valves, the slips to split are engaged by slips tooth 4 with internal surface of sleeve pipe, and internal surface of sleeve pipe is tightly attached to.
Embodiment 4
According to embodiment 1, as shown in Figure 1, by the design of the utility model, central tube 1, throw-out collar 2, upper slips 3, lower card
Watts 14, upper cone 5, lower cone 13, interior wrist guard, outer wrist guard, spacer ring 9 and anticollision ring 15 can dissolve naturally under the operating condition of shaft bottom,
Packing element is made of solvable rubber, can also be dissolved naturally under the operating condition of shaft bottom, the slips tooth 4 on slips is broken after pressure-bearing of constructing
It is cleaved into powder or clast, after bridge plug ontology 17 dissolves, slips tooth 4 is decomposed in the solution of shaft bottom, finally with returning drain together from well
Bottom, which is returned, is discharged to ground, therefore can contract after the bridge plug construction operation without boring except technique and pit shaft clast salvage prune job
Short construction period is realized and simplifies fracturing technology, reduced well cost, saves completion time, while the bridge plug can be in feelings not with pressure
Gas production wellhead and tripping in completion tubular column are installed under condition and complete fractured horizontal well gas testing completion practice, greatly shorten construction period,
It reduces complex process degree, cut down well control safety risk.
Embodiment 5
According to embodiment 1, as shown in Figure 1, the mode of giving up of the utility model is that top shear pin is given up, central tube 1 passes through
The adapter of the blind hole 20 of upper end shear pin and setting tool connects, the size of power of giving up can by the quantity of practical shear pin come
Control, when setting, when the shearing force that the shear pin on central tube 1 is born is greater than the intensity that it can bear, shear pin is cut, real
It now gives up, structure of giving up and process of giving up are simple and reliable.
Technical staff in the field should be appreciated that soluble metal described in this programme, can sol rubber, position limiting structure, slips
Tooth 4 and anti-tooth butt 16 belong to the prior art, and the product to different model and specification can be purchased on the market according to specific requirements,
Wherein, the soluble metal is the metal that can be dissolved under the conditions of Jing Kuang, it is described can sol rubber be soluble compounded rubber, institute
Stating slips tooth 4 and anti-tooth butt 16 is cylindrical structure, and respectively with slips, 15 integrally connected of anticollision ring.
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 (6)
1. a kind of solvable bridge plug of minor diameter, including bridge plug ontology (17), it is characterised in that: the outer diameter of the bridge plug ontology (17) is
95mm, the bridge plug ontology (17) include central tube (1), and one end of the central tube (1) is arranged with throw-out collar (2), another end cap
Equipped with anticollision ring (15), the throw-out collar (2) passes through the position limiting structure limit on central tube (1), the anticollision ring (15) and center
Pipe (1) be connected through a screw thread, central tube (1) throw-out collar (2) between anticollision ring (15), be successively arranged with upper slips (3), on
Cone (5), the first outer wrist guard (6), wrist guard (7) in first, the first packing element (8), spacer ring (9), the second packing element (10), shield in second
Wrist (11), the second outer wrist guard (12), lower cone (13), lower slips (14), the upper slips (3) and lower slips (14) are monoblock type
Slips, first packing element (8) and the second packing element (10) are made of solvable rubber, the central tube (1), anticollision ring (15),
Throw-out collar (2), upper slips (3), upper cone (5), the first outer wrist guard (6), wrist guard (7) in first, spacer ring (9), wrist guard in second
(11), the second outer wrist guard (12), lower cone (13), lower slips (14) are all made of soluble metal and are made.
2. the solvable bridge plug of minor diameter according to claim 1, it is characterised in that: the upper slips (3) and lower slips (14)
Inner wall be respectively arranged with fitting surface compatible with the conical surface of upper cone (5) and lower cone (13).
3. the solvable bridge plug of minor diameter according to claim 1, it is characterised in that: the upper slips (3) and lower slips (14)
Outer wall be evenly distributed with 8 grooves (19) radially, slips is divided into 8 slips areas (18) by 8 grooves (19).
4. the solvable bridge plug of minor diameter according to claim 3, it is characterised in that: fixed on each slips area (18)
4 slips teeth (4) are connected with, and the slips tooth (4) is made of ceramics.
5. the solvable bridge plug of minor diameter according to claim 1, it is characterised in that: be connected on the anticollision ring (15)
The equally distributed anti-tooth butt (16) of 8 circumferential directions.
6. the solvable bridge plug of minor diameter according to claim 1, it is characterised in that: the upper end of the central tube (1) is provided with 8
Equally distributed blind hole (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232127.6U CN208502731U (en) | 2018-08-01 | 2018-08-01 | A kind of solvable bridge plug of minor diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232127.6U CN208502731U (en) | 2018-08-01 | 2018-08-01 | A kind of solvable bridge plug of minor diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502731U true CN208502731U (en) | 2019-02-15 |
Family
ID=65291086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821232127.6U Active CN208502731U (en) | 2018-08-01 | 2018-08-01 | A kind of solvable bridge plug of minor diameter |
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| CN (1) | CN208502731U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973045A (en) * | 2019-03-29 | 2019-07-05 | 东方宝麟科技发展(北京)有限公司 | Complete solvable bridge plug |
| CN111021986A (en) * | 2019-12-31 | 2020-04-17 | 四川安东油气工程技术服务有限公司 | 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 |
| CN112253044A (en) * | 2020-11-05 | 2021-01-22 | 中国石油集团渤海钻探工程有限公司 | High-ductility small-diameter dissolvable bridge plug |
| CN112796701A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Soluble bridge plug suitable for high-temperature well condition |
| 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 |
| CN116146147A (en) * | 2023-04-17 | 2023-05-23 | 太原科技大学 | Bridge plug with bidirectional plugging structure |
| CN117684912A (en) * | 2024-01-24 | 2024-03-12 | 西安方元能源工程有限责任公司 | Soluble reverse bridge plug |
-
2018
- 2018-08-01 CN CN201821232127.6U patent/CN208502731U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973045A (en) * | 2019-03-29 | 2019-07-05 | 东方宝麟科技发展(北京)有限公司 | Complete solvable bridge plug |
| CN111021986A (en) * | 2019-12-31 | 2020-04-17 | 四川安东油气工程技术服务有限公司 | 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 |
| CN112253044A (en) * | 2020-11-05 | 2021-01-22 | 中国石油集团渤海钻探工程有限公司 | High-ductility small-diameter dissolvable bridge plug |
| CN112796701A (en) * | 2021-01-26 | 2021-05-14 | 四川省威沃敦化工有限公司 | Soluble bridge plug suitable for high-temperature well condition |
| 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 |
| CN116146147A (en) * | 2023-04-17 | 2023-05-23 | 太原科技大学 | Bridge plug with bidirectional plugging structure |
| CN117684912A (en) * | 2024-01-24 | 2024-03-12 | 西安方元能源工程有限责任公司 | Soluble reverse bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
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. |