CN109973049A - A kind of bridge plug for producing well - Google Patents
A kind of bridge plug for producing well Download PDFInfo
- Publication number
- CN109973049A CN109973049A CN201910165833.6A CN201910165833A CN109973049A CN 109973049 A CN109973049 A CN 109973049A CN 201910165833 A CN201910165833 A CN 201910165833A CN 109973049 A CN109973049 A CN 109973049A
- Authority
- CN
- China
- Prior art keywords
- connector
- slips
- bridge plug
- packing element
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a kind of bridge plugs for producing well, the bottom end of first connector is provided with convex block, the top setting of second connector is fluted, the upper end of the ball seat is equipped with rubber pad, the upper end of the rubber pad is connected with pressure break resin balls, the side of the upper slips is connected with centrum, and the side of the lower slips is connected with hypocentrum.The first connector that the present invention passes through the trapezoidal structure in cross section of setting, so that being maintained when bridge plug enters well at a high speed under liquid-driving placed in the middle, it prevents from making bridge plug be damaged premature setting by reasons such as shaft deformations, under the cooperation of the groove and convex block of arcuate structure, first connector and the second connector are engaged, during boring milling when slips is drilled, first connector falls and is fixed on the central tube of next stage bridge plug, the first connector is with bit when preventing from boring milling, and the material of central tube is light alloy, shorten the brill milling time, improve brill milling efficiency.
Description
Technical field
The present invention relates to oil field equipment technical field, specially a kind of bridge plug for producing well.
Background technique
Bridge plug is a kind of equipment used for sealing in oil/gas well, it is few with working procedure, the period is short, card envelope position
Accurately equal feature, therefore, bridge plug are widely used in the fields such as oil/gas well oil recovery, maintenance.
Pressure break resin balls are easily deviated when being blocked, and not firm enough, existing nose cone generallys use inclined design, bridge plug
It being not easy to remain placed in the middle when entering well, shaft deformation is it is easier that bridge plug is damaged premature setting, and the brill milling time is long, and working efficiency is low,
Slips easily shifts under the action of packing element elasticity when setting, and bores slips when milling and easily rotate.
Summary of the invention
It is an object of the invention to: it is easily deviated to solve pressure break resin balls when being blocked, it is not firm enough, it is existing
Nose cone generallys use inclined design, and bridge plug is not easy to remain placed in the middle when entering well, shaft deformation it is easier that bridge plug is damaged premature setting,
And the brill milling time is long, working efficiency is low, and slips easily shifts under the action of packing element elasticity when setting, and it is easy to bore slips when milling
The problem of rotation, provides a kind of bridge plug for producing well.
To achieve the above object, the invention provides the following technical scheme: a kind of bridge plug for producing well, including center
Pipe, the both ends of the central tube are respectively arranged with the first connector and the second connector, the bottom end setting of first connector
There is convex block, the top setting of second connector is fluted, and second connector is internally provided with ball seat, the ball seat
Upper end rubber pad is installed, the upper end of the rubber pad is connected with pressure break resin balls, and the central tube is close to the second connector
The surface of one end is provided with shear pin, the lower section of the shear pin be from top to bottom disposed with slips stop ring, upper slips,
Back band, combination packing element and lower slips, the side of the upper slips are connected with centrum, and the side of the lower slips is connected with lower vertebra
Body, the bottom end of the lower slips are connected with guide shoe, and the surface of the guide shoe is provided with pushing block.
Preferably, the material of the central tube is light alloy, and is provided at central tube and combination packing element contact position
Sealing ring.
Preferably, the combination packing element includes the second packing element, and the both ends of second packing element are respectively connected with the first packing element, and
Second packing element and the first packing element are connected by spacer ring, and the back band is located at the one end of the first packing element far from the second packing element.
Preferably, the cross section of the ball seat and rubber pad is in hollow semicircular structure, and ball seat and rubber pad
Size matches with pressure break resin balls.
Preferably, the quantity of the convex block is multiple, and multiple convex blocks are evenly distributed on the bottom end of the first connector, institute
The quantity for stating groove is identical as convex block, and multiple grooves are evenly distributed on the upper end of the second connector.
Preferably, the size of the groove and the size of convex block match, and the cross section of groove and convex block is arc-shaped
Structure, the trapezoidal structure in cross section of first connector.
Preferably, the surface of the upper slips and lower slips is provided with annular groove, and upper slips and lower slips pass through
Slip spider is connected with central tube, is connected with snap ring on the outside of the annular groove.
Preferably, the upper slips and lower slips are provided with card slot, and the cross of card slot close to the bottom end of central tube side
The " T " shape structure in section, the upper centrum and hypocentrum are provided with sliding slot, the surface of the sliding slot far from the side of central tube
The fixed block to match with card slot is installed.
Compared with prior art, the beneficial effects of the present invention are: semicircular ball seat and rubber that the present invention passes through setting
Pad, avoids pressure break resin balls from shifting when being blocked, improves the stability of closure, by the cross section of setting in ladder
First connector of shape structure prevents so that remaining placed in the middle when bridge plug enters well at a high speed under liquid-driving by originals such as shaft deformations
Because making bridge plug be damaged premature setting, under the cooperation of the groove and convex block of arcuate structure, so that the first connector and second connects
Connector can engage, and during boring milling when slips is drilled, the first connector falls and is fixed in next stage bridge plug
On heart pipe, the first connector is with bit when preventing from boring milling, and the material of central tube is light alloy, when shortening brill milling
Between, brill milling efficiency is improved, by the card slot and fixed block of the " T " shape structure of setting, avoids boring slips when milling and rotates, prevent simultaneously
Slips shifts under the action of packing element elasticity when only setting, and "T"-shaped card slot and fixed block make the more steady of movement, no
Easy sideslip.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the internal structure chart of the second connector of the invention；
Fig. 3 is the structural schematic diagram of groove of the present invention and convex block；
Fig. 4 is the structural schematic diagram of slips of the present invention；
Fig. 5 is the structural schematic diagram of the upper centrum of the present invention.
In figure: 1, central tube；2, pressure break resin balls；3, shear pin；4, slips stops ring；5, upper slips；6, upper centrum；7,
Back band；8, packing element is combined；801, the first packing element；802, the second packing element；9, hypocentrum；10, lower slips；11, guide shoe；12, it promotes
Block；13, ball seat；14, rubber pad；15, groove；16, convex block；17, the first connector；18, the second connector；19, annular groove；
20, card slot；21, fixed block；22, snap ring；23, sliding slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5, a kind of bridge plug for producing well, including central tube 1, the both ends of central tube 1 are please referred to be respectively arranged with
First connector 17 and the second connector 18, the bottom end of the first connector 17 are provided with convex block 16, the top of the second connector 18
It is arranged fluted 15, the second connector 18 is internally provided with ball seat 13, and the upper end of ball seat 13 is equipped with rubber pad 14, rubber pad
14 upper end is connected with pressure break resin balls 2, and central tube 1 is provided with shear pin 3 close to the surface of 18 one end of the second connector, cuts
The lower section for cutting pin 3 is from top to bottom disposed with slips and stops ring 4, upper slips 5, back band 7, combination packing element 8 and lower slips 10, on
The side of slips 5 is connected with centrum 6, and the side of lower slips 10 is connected with hypocentrum 9, and the bottom end of lower slips 10 is connected with guide shoe
11, the surface of guide shoe 11 is provided with pushing block 12.
In this implementation: by the ball seat 13 and rubber pad 14 of setting, pressure break resin balls 2 being avoided to occur when being blocked partially
It moves, the stability of closure is improved, by the first connector 17 of setting, so that bridge plug enters at a high speed well Shi Wei under liquid-driving
It holds between two parties, prevents from making bridge plug be damaged premature setting by reasons such as shaft deformations, under the cooperation of groove 15 and convex block 16, so that
First connector 17 and the second connector 18 can engage, and during boring milling when slips is drilled, the first connector 17 falls
On the central tube 1 for falling and being fixed on next stage bridge plug, prevents from boring the first connector 17 when milling and improve brill milling effect with bit
Rate, by the card slot 20 and fixed block 21 of the " T " shape structure of setting, card when avoiding boring slips when milling and rotate, while preventing from setting
It watt easily shifts under the action of combining 8 elasticity of packing element.
Please emphatically refering to fig. 1, the material of central tube 1 is light alloy, and sets at central tube and combination 8 contact position of packing element
It is equipped with sealing ring, combination packing element 8 includes the second packing element 802, and the both ends of the second packing element 802 are respectively connected with the first packing element 801, and the
Two packing elements 802 are connected with the first packing element 801 by spacer ring, and back band 7 is located at one of the first packing element 801 far from the second packing element 802
End, by the second packing element 802 and two the first packing elements 801 of setting, sealing area is big, sets that effect is good, due to central tube 1
Material is light alloy, is easier to bore compared to Nodular cast iron material and remove, shortens the brill milling time, improves brill milling efficiency.
Please be emphatically referring to Fig.2, the cross section of ball seat 13 and rubber pad 14 be in hollow semicircular structure, and 13 He of ball seat
The size of rubber pad 14 matches with pressure break resin balls 2, by the ball seat 13 and rubber pad 14 of setting, avoids pressure break resin balls
2 shift when being blocked, and improve the stability of closure.
Please focus on refering to Fig. 3, the quantity of convex block 16 be it is multiple, multiple convex blocks 16 are evenly distributed on the bottom of the first connector 17
End, the quantity of groove 15 is identical as convex block 16, and multiple grooves 15 are evenly distributed on the upper end of the second connector 18, groove 15 it is big
The small size with convex block 16 matches, and the arc-shaped structure in the cross section of groove 15 and convex block 16, the cross of the first connector 17
The trapezoidal structure in section, by the first connector 17 of the trapezoidal structure in the cross section of setting, so that bridge plug is under liquid-driving
High speed remains placed in the middle when entering well, prevents from making bridge plug be damaged premature setting by reasons such as shaft deformations, in the groove of arcuate structure
15 and convex block 16 cooperation under, the first connector 17 and the second connector 18 are engaged, bore milling during work as slips
When being drilled, the first connector 17 is fallen and is fixed on the central tube 1 of next stage bridge plug, prevents from boring the first connector 17 when milling
With bit, brill milling efficiency is improved.
It please focus on refering to Fig. 4 and Fig. 5, the surface of upper slips 5 and lower slips 10 is provided with annular groove 19, and upper slips 5
It is connected by slip spider with central tube 1 with lower slips 10, the outside of annular groove 19 is connected with snap ring 22, and upper slips 5 are under
Slips 10 is provided with card slot 20, and the " T " shape structure in cross section of card slot 20, upper centrum 6 close to the bottom end of 1 side of central tube
It is provided with sliding slot 23 far from the side of central tube 1 with hypocentrum 9, the surface of sliding slot 23 is equipped with to be consolidated with what card slot 20 matched
Determine block 21, by the card slot 20 and fixed block 21 of the " T " shape structure of setting, avoids boring slips when milling and rotate, while preventing from setting
When slips easily shift under the action of combining 8 elasticity of packing element.
Working principle: the thrust generated using setting tool is in upper slips 5, and pulling force effect is in shear joint, by upper
9 pairs of combination packing elements 8 of centrum 6 and hypocentrum apply two pressure, drop-down power, and in certain weight range, the upper slips 5 of bridge plug are under
Slips 10 is ruptured and is embedded on centrum 6 and hypocentrum 9 respectively, is made to combine the expansion of packing element 8 and be sealed, completes to set, set
Tool and bridge plug are detached from, and complete to give up, and after giving up and carrying out the work such as phase tank perforation, are acted setting tool, are put into pressure break resin
Ball 2 after crack resin ball 2 with pressure falls into ball seat 13, can carry out pressing crack construction on bridge plug upper layer, pass through ball seat 13 and rubber pad
14, it avoids pressure break resin balls 2 from shifting when being blocked, improves the stability of closure, the second packing element 802 and two
One packing element 801, so that sealing area is big, it is good to set effect, when boring milling, due to the first connector of the trapezoidal structure in cross section
17, so that remaining placed in the middle when bridge plug enters well at a high speed under liquid-driving, prevent from making bridge plug is impaired to mention by reasons such as shaft deformations
Before set, under the cooperation of the groove 15 and convex block 16 of arcuate structure, enable the first connector 17 and the second connector 18
Engagement, during boring milling when slips is drilled, the first connector 17 falls and is fixed on the central tube 1 of next stage bridge plug
On, it prevents from boring the first connector 17 when milling and is cast since the material of central tube 1 is light alloy compared to spheroidal graphite with bit
Iron material matter is easier to bore and remove, and shortens the brill milling time, improves brill milling efficiency, the card slot 20 and fixed block 21 of " T " shape structure are kept away
Slips easily shifts under the action of combining 8 elasticity of packing element when exempting to bore slips when milling to rotate, while preventing from setting.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (8)
1. a kind of bridge plug for producing well, including central tube (1), it is characterised in that: the both ends of the central tube (1) are set respectively
It is equipped with the first connector (17) and the second connector (18), the bottom end of first connector (17) is provided with convex block (16), institute
Fluted (15) are arranged in the top for stating the second connector (18), and second connector (18) is internally provided with ball seat (13),
The upper end of the ball seat (13) is equipped with rubber pad (14), and the upper end of the rubber pad (14) is connected with pressure break resin balls (2), institute
It states central tube (1) to be provided with shear pin (3) close to the surface of the second connector (18) one end, under the shear pin (3)
Side is from top to bottom disposed with slips and stops ring (4), upper slips (5), back band (7), combination packing element (8) and lower slips (10), institute
The side for stating upper slips (5) is connected with centrum (6), and the side of the lower slips (10) is connected with hypocentrum (9), the lower card
The bottom end of watt (10) is connected with guide shoe (11), and the surface of the guide shoe (11) is provided with pushing block (12).
2. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the material of the central tube (1)
For light alloy, and sealing ring is provided at central tube and combination packing element (8) contact position.
3. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the combination packing element (8) includes
The both ends of second packing element (802), second packing element (802) are respectively connected with the first packing element (801), and the second packing element (802) and
First packing element (801) is connected by spacer ring, and the back band (7) is located at one of the first packing element (801) far from the second packing element (802)
End.
4. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the ball seat (13) and rubber pad
(14) cross section is in hollow semicircular structure, and the size of ball seat (13) and rubber pad (14) with pressure break resin balls
(2) match.
5. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the quantity of the convex block (16) is
Multiple, multiple convex blocks (16) are evenly distributed on the bottom end of the first connector (17), the quantity and convex block of the groove (15)
(16) identical, multiple grooves (15) are evenly distributed on the upper end of the second connector (18).
6. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the size of the groove (15) with
The size of convex block (16) matches, and the arc-shaped structure in the cross section of groove (15) and convex block (16), first connector
(17) the trapezoidal structure in cross section.
7. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the upper slips (5) and lower card
The surface of watt (10) is provided with annular groove (19), and upper slips (5) and lower slips (10) pass through slip spider and central tube (1)
It is connected, is connected with snap ring (22) on the outside of the annular groove (19).
8. a kind of bridge plug for producing well according to claim 1, it is characterised in that: the upper slips (5) and lower card
Watt (10) are provided with card slot (20) close to the bottom end of central tube (1) side, and the " T " shape structure in cross section of card slot (20),
The upper centrum (6) and hypocentrum (9) are provided with sliding slot (23) far from the side of central tube (1), the table of the sliding slot (23)
Face is equipped with the fixed block (21) to match with card slot (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165833.6A CN109973049A (en) | 2019-03-06 | 2019-03-06 | A kind of bridge plug for producing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910165833.6A CN109973049A (en) | 2019-03-06 | 2019-03-06 | A kind of bridge plug for producing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973049A true CN109973049A (en) | 2019-07-05 |
Family
ID=67077979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910165833.6A Pending CN109973049A (en) | 2019-03-06 | 2019-03-06 | A kind of bridge plug for producing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456676A (en) * | 2020-04-30 | 2020-07-28 | 大庆昊运橡胶制品有限公司 | Integrated large-diameter packer rubber cylinder assembly |
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| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| US20140076571A1 (en) * | 2008-12-23 | 2014-03-20 | W. Lynn Frazier | Downhole tools having non-toxic degradable elements |
| CN203978410U (en) * | 2014-05-07 | 2014-12-03 | 中国石油化工股份有限公司 | Combination sliding sleeve |
| CN204899850U (en) * | 2015-09-11 | 2015-12-23 | 重庆鼎顺隆能源技术有限责任公司 | Novel compound bridging plug of ball cage |
| CN105545251A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Recoverable bridge plug for cable setting |
| CN108590573A (en) * | 2018-08-13 | 2018-09-28 | 长江大学 | One kind can bore pitching press-fracturing bridge plug |
| CN208456553U (en) * | 2018-05-22 | 2019-02-01 | 天津市石大同方新能源技术有限公司 | Solvable bridge plug structure |
-
2019
- 2019-03-06 CN CN201910165833.6A patent/CN109973049A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140076571A1 (en) * | 2008-12-23 | 2014-03-20 | W. Lynn Frazier | Downhole tools having non-toxic degradable elements |
| CN103046896A (en) * | 2013-01-17 | 2013-04-17 | 四机赛瓦石油钻采设备有限公司 | Fracturing bridge plug |
| CN203978410U (en) * | 2014-05-07 | 2014-12-03 | 中国石油化工股份有限公司 | Combination sliding sleeve |
| CN204899850U (en) * | 2015-09-11 | 2015-12-23 | 重庆鼎顺隆能源技术有限责任公司 | Novel compound bridging plug of ball cage |
| CN105545251A (en) * | 2016-02-02 | 2016-05-04 | 四机赛瓦石油钻采设备有限公司 | Recoverable bridge plug for cable setting |
| CN208456553U (en) * | 2018-05-22 | 2019-02-01 | 天津市石大同方新能源技术有限公司 | Solvable bridge plug structure |
| CN108590573A (en) * | 2018-08-13 | 2018-09-28 | 长江大学 | One kind can bore pitching press-fracturing bridge plug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456676A (en) * | 2020-04-30 | 2020-07-28 | 大庆昊运橡胶制品有限公司 | Integrated large-diameter packer rubber cylinder assembly |
| CN111456676B (en) * | 2020-04-30 | 2021-01-01 | 大庆昊运橡胶制品有限公司 | Integrated large-diameter packer rubber cylinder assembly |
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Application publication date: 20190705 |