CN107939337B - Hydraulic setting formula bridge plug - Google Patents
Hydraulic setting formula bridge plug Download PDFInfo
- Publication number
- CN107939337B CN107939337B CN201810034660.XA CN201810034660A CN107939337B CN 107939337 B CN107939337 B CN 107939337B CN 201810034660 A CN201810034660 A CN 201810034660A CN 107939337 B CN107939337 B CN 107939337B
- Authority
- CN
- China
- Prior art keywords
- tapered sleeve
- packing element
- upper tapered
- bridge plug
- 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.)
- Active
Links
- 238000012856 packing Methods 0.000 claims abstract description 77
- 238000005520 cutting process Methods 0.000 claims description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to oil field well field of tool, more particularly to a kind of hydraulic setting formula bridge plug, including central tube, packing element and slips, packing element is sleeved on the outside of central tube, slips is by slips mounting collar around around central tube, further include upper tapered sleeve A, lower tapered sleeve A, upper tapered sleeve B, lower tapered sleeve B, set piston, clamp spring and retaining set, upper tapered sleeve A, lower tapered sleeve A, upper tapered sleeve B, lower tapered sleeve B, set piston, clamp spring and retaining set are sleeved on central tube, wherein, upper tapered sleeve A and lower tapered sleeve A is inserted into the both ends of packing element, it is provided on the inside of packing element both ends and the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve A and lower tapered sleeve A, flower basket type bushing is provided on the inside of the packing element, flower basket type bushing is cylinder-like structure.The present invention has carried setting mechanism and releasing gadget, can significantly shorten the length of bridge plug tool segment, therefore can effectively solve the problems, such as clamping stagnation during bridge plug tool segment is gone into the well.
Description
Technical field
The invention belongs to oil field well field of tool more particularly to a kind of hydraulic setting formula bridge plugs.
Background technology
Bridge plug is common a kind of downhole tool in oilfield process, can be carried out to certain layers of position of underground by bridge plug
Long-term or permanent closure, to reach relevant job requirements.The structure of bridge plug generally includes packing element sealing structure and slips anchoring
Structure, bridge plug are transferred to the precalculated position of underground, and bridge plug could be completed in underground by so that packing element and slips is set by external force
Installation.In the prior art, it needs to connect the dedicated setting tool of bridge plug, setting tool and bridge plug above bridge plug when bridge plug is installed
The length of the tool segment for the composition that links into an integrated entity is longer, in the problem of being easy to happen clamping stagnation in the process of going into the well.In addition, the prior art
In, the packing element in bridge plug is thicker, and the diameter of bridge plug is certain, and therefore, packing element seriously constrains the expansion of bridge plug latus rectum, into
And limit the performance of bridge plug performance.
Invention content
The present invention provides a kind of hydraulic setting formula bridge plug, to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme：
The present invention includes central tube, packing element and slips, and packing element is sleeved on the outside of central tube, and slips passes through slips installation set
Be fitted around around central tube, further include upper tapered sleeve A, lower tapered sleeve A, upper tapered sleeve B, lower tapered sleeve B, set piston, clamp spring and
Retaining set, upper tapered sleeve A, lower tapered sleeve A, upper tapered sleeve B, lower tapered sleeve B, set piston, clamp spring and retaining set be sleeved on central tube,
Wherein, upper tapered sleeve A and lower tapered sleeve A is inserted into the both ends of packing element, is provided on the inside of packing element both ends and upper tapered sleeve A and lower tapered sleeve A
The matched circular conical surface of circular conical surface in outside, flower basket type bushing is provided on the inside of the packing element, and flower basket type bushing is cylindrical shape
Structure is provided at least 10 axial joint-cuttings on outer wall, and the incision direction of adjacent two axial joint-cuttings is on the contrary, described is upper
The end of tapered sleeve A and lower tapered sleeve A are inserted in the inside at flower basket type bushing both ends, and the upper tapered sleeve B and lower tapered sleeve B set up separately in slips
Both sides up and down, the circular conical surface on the outside of upper tapered sleeve B and lower tapered sleeve B is inserted between central tube and slips, and described sets piston, card
Spring and retaining set are respectively positioned on the upside of tapered sleeve A, wherein clamp spring is axially fixed in by clip spring seat on central tube, the seat
Envelope piston is located at the upper end of retaining set, and the clamp spring is located at the inside of retaining set lower end, and the outside of clamp spring and retaining cover interior
Side is provided with the retaining screw thread pair for preventing retaining from covering upward return, and the upper end of the hydraulic setting formula bridge plug, which is provided with, loses
The lower end of mobile phone structure, hydraulic setting formula bridge plug is provided with ball sealer, and ball sealer is encapsulated in by spacing ring in ball seat.
Axial spacing the setting apart from big 5mm than packing element of the upper tapered sleeve A and lower tapered sleeve A.The upper tapered sleeve A and
The taper of lower tapered sleeve A is identical, is 1：2.It is provided on the outside of the upper tapered sleeve A and lower tapered sleeve A to packing element edge into conduct
To the cyclic annular limiting section of limit.Up and down in two along being both provided with and the ball sealer of the circular hole in the spacing ring center
On the matched sealing surface of spherical surface.The number of the axial joint-cutting is even number.The width of the axial joint-cutting is less than
0.2mm。
Beneficial effects of the present invention are：
1, the present invention has carried setting mechanism and releasing gadget, and dedicated setting tool need not be used when underground is installed,
The length of bridge plug tool segment can significantly be shortened, therefore can effectively solve the problems, such as clamping stagnation during bridge plug tool segment is gone into the well.
2, present invention employs unique packing element structures, and there are two distinguishing features for packing element structure tool：On the one hand, packing element can
It is swelled outward under the compression of upper tapered sleeve A, packing element is made to set, at the same time, the pyramidal structure on upper tapered sleeve A and lower tapered sleeve A is inserted
Enter to make on the inside of packing element packing element further outer protuberance so that packing element sets required rubber material and reduces；On the other hand, in packing element
Side is provided with flower basket type bushing, and flower basket type bushing can together expand outwardly under the action of upper tapered sleeve A and lower tapered sleeve A with packing element,
To prop up a space without the rubber material filling on packing element on the inside of packing element, and then further such that packing element sets institute
The rubber material that needs is reduced, because required rubber material is reduced, the thickness of packing element is reduced, the latus rectum of bridge plug because
This expanded.
3, lower end of the invention is provided with ball seat and ball sealer, and wherein ball sealer can be installed selectively, installs ball sealer
Central tube can be shut, not installing ball sealer can be such that center tube passage opens, to meet different construction to bridge plug center
The different demands of channel status.Meanwhile the spacing ring for encapsulating ball sealer can also be installed selectively, when spacing ring is installed,
Spacing ring plays position-limiting action to ball sealer, when not installing spacing ring, can put into ball sealer from well head after bridge plug installs, from
And further increase the adaptability of bridge plug.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the structural schematic diagram of flower basket type bushing.
In figure：1- releasing gadgets, 2- set piston, 3- retaining sets, 4- clip spring seats, 5- clamp springs, the upper tapered sleeve A of 6-, 7- packing elements,
8- flower basket type bushings, tapered sleeve A, 10- central tube under 9-, the upper tapered sleeve B of 11-, 12- slips, 13- ball seats, 14- ball sealers, 15- limits
Ring, tapered sleeve B, 17- overvoltage hole under 16-, 18- axial direction joint-cuttings, 19- ring-type limiting sections.
Specific implementation mode
The present invention is described further below in conjunction with attached drawing：
The present invention includes central tube 10, packing element 7 and slips 12, and packing element 7 is sleeved on the outside of central tube 10, and slips 12 passes through
Slips mounting collar is around around central tube 10.It is above common structure in the prior art, details are not described herein.
The hydraulic setting formula bridge plug further include upper tapered sleeve A 6, lower tapered sleeve A 9, upper tapered sleeve B 11, lower tapered sleeve B 16,
Set piston 2, clamp spring 5 and retaining set 3, upper tapered sleeve A 6, lower tapered sleeve A 9, upper tapered sleeve B 11, lower tapered sleeve B 16, set piston 2,
Clamp spring 5 and retaining set 3 are sleeved on central tube 10, wherein and upper tapered sleeve A 6 and lower tapered sleeve A 9 is inserted into the both ends of packing element 7,
The matched circular conical surface of circular conical surface with 9 outside upper tapered sleeve A 6 and lower tapered sleeve A is provided on the inside of 7 both ends of packing element,
When packing element 7 is set, the pyramidal structure on upper tapered sleeve A6 and lower tapered sleeve A9 is inserted into 7 inside of packing element to assist packing element 7 further out
Protuberance.The inside of the packing element 7 is provided with flower basket type bushing 8, and flower basket type bushing 8 can be in the work of upper tapered sleeve A6 and lower tapered sleeve A9
It is expanded outwardly together with packing element 7 under, to prop up a sky without the rubber material filling on packing element 7 in 7 inside of packing element
Between, and then further such that packing element 7 sets required rubber material reduction.
Present invention employs unique packing element structures, and there are two distinguishing features for packing element structure tool：On the one hand, packing element 7 can
It is swelled outward under the compression of upper tapered sleeve A6, packing element 7 is made to set, at the same time, the taper knot on upper tapered sleeve A6 and lower tapered sleeve A9
Structure is inserted into 7 inside of packing element so that the further outer protuberance of packing element 7 so that packing element 7 sets required rubber material and reduces；Another party
Face, 7 inside of packing element are provided with flower basket type bushing 8, and flower basket type bushing 8 can be under the action of upper tapered sleeve A6 and lower tapered sleeve A9 with packing element
7 expand outwardly together, to prop up a space without the rubber material filling on packing element 7 in the inside of packing element 7, and then into one
Step is so that packing element 7 sets required rubber material and reduces.Because it is required that two above-mentioned aspect features can be such that packing element 7 sets
Rubber material is reduced, so the thickness of packing element 7 is reduced, the latus rectum therefore expanded of bridge plug.
Flower basket type bushing 8 is cylinder-like structure, and at least 10 axial joint-cuttings 18, adjacent two axis are provided on outer wall
To the incision direction of joint-cutting 18 on the contrary, the end of the upper tapered sleeve A 6 and lower tapered sleeve A 9 is inserted in 8 both ends of flower basket type bushing
Inside.When packing element 7 is set, the pyramidal structure on upper tapered sleeve A6 and lower tapered sleeve A9 is inserted into 8 inside of flower basket type bushing, flower basket type bushing
8 expand outwardly under the forcing of the conical surface, and are ruptured from axial joint-cutting 18, and flower basket type bushing 8 after rupture dissipates structure into strips,
Strip structure is supported on the inside of packing element 7.Gaily decorated basket shape structure makes flower basket type bushing 8 be easier to tear structure into strips, protects simultaneously
Card strip structure is evenly distributed, and avoids causing packing element 7 to be extruded into because the gap between two adjacent strip structures is excessive
In space on the inside of strip structure.
The upper tapered sleeve B11 and lower tapered sleeve B16 sets up separately in the both sides up and down of slips 12, upper tapered sleeve B11 and lower tapered sleeve B16
The circular conical surface in outside is inserted between central tube 10 and slips 12, and set piston 2, clamp spring 5 and the retaining set 3 are respectively positioned on epicone
Cover the upside of A6, wherein clamp spring 5 is axially fixed in by clip spring seat 4 on central tube 10, and the piston 2 that sets is located at retaining
The upper end of set 3, the clamp spring 5 are located at the inside that retaining covers 3 lower ends, and the inside setting of the outside of clamp spring 5 and retaining set 3 is useful
In the retaining screw thread pair for preventing retaining from covering 3 upward returns.It when setting, is suppressed into central tube 10, high pressure water is via over-pressed hole 17
Into 2 superjacent air space of piston is set, to which driving sets 2 downlink of piston, sets piston 2 and pushed under upper tapered sleeve A by retaining set 3
Packing element 7 is squeezed after row, while forcing slips 12 and 7 simultaneous setting of packing element.
The upper end of the hydraulic setting formula bridge plug is provided with releasing gadget 1, and the present invention has carried setting mechanism and given up
Mechanism 1 need not use dedicated setting tool, can significantly shorten the length of bridge plug tool segment, therefore can have when underground is installed
Effect solves the problems, such as clamping stagnation during bridge plug tool segment is gone into the well.
The lower end of hydraulic setting formula bridge plug is provided with ball sealer 14, and ball sealer 14 is encapsulated in ball seat 13 by spacing ring 15
It is interior.The lower end of the present invention is provided with ball seat 13 and ball sealer 14, and wherein ball sealer 14 can be installed selectively, installs ball sealer 14
Central tube 10 can be shut, not installing ball sealer 14 can be such that 10 channel of central tube opens, to meet different construction to bridge
Fill in the different demands of central passage state.Meanwhile the spacing ring 15 for encapsulating ball sealer 14 can also be installed selectively, installation
When spacing ring 15, spacing ring 15 plays position-limiting action to ball sealer 14, when spacing ring 15 is not installed, can after bridge plug installs from
Well head puts into ball sealer 14, to further increase the adaptability of bridge plug.
Axial spacing the setting apart from big 5mm than packing element 7 of the upper tapered sleeve A 6 and lower tapered sleeve A 9, both ensure that glue
Cylinder 7 sets stroke with enough, and conical section more as possible on epicone set A 6 and lower tapered sleeve A 9 can be made to be inserted in packing element
Inside, to farthest promote the swollen envelope of packing element.
The upper tapered sleeve A 6 is identical with the taper of lower tapered sleeve A 9, is 1：2, this taper is preferable taper, if taper
Excessive, then pyramidal structure is not easy to be inserted into packing element 7, if taper is too small, cone structure is smaller to the swollen envelope effect of packing element 7, no
Conducive to the reduction of 7 thickness of packing element.
The outside of the upper tapered sleeve A 6 and lower tapered sleeve A 9 is provided with the cyclic annular limit radially limited to 7 edge of packing element
Position portion 19, cyclic annular limiting section 19 when packing element 7 is by axially and radially force effect, can avoid the edge of packing element 7 from tilting.
Up and down in two along being both provided with and the ball on the ball sealer 14 of the circular hole in 15 center of the spacing ring
The matched sealing surface in face.
The number of the axial joint-cutting 18 is even number only in this way could complete rapid processing by wire cutting.
The width of the axial joint-cutting 18 is less than 0.2mm, after can reducing 8 fragmentation of flower basket type bushing to the full extent, respectively
Gap between strip structure.
Claims (1)
1. a kind of hydraulic setting formula bridge plug, including central tube (10), packing element (7) and slips (12), packing element (7) are sleeved on central tube
(10) outside, slips (12) is by slips mounting collar around around central tube (10), it is characterised in that：Described
Hydraulic setting formula bridge plug further includes upper tapered sleeve A (6), lower tapered sleeve A (9), upper tapered sleeve B (11), lower tapered sleeve B (16), sets piston
(2), clamp spring (5) and retaining set (3), upper tapered sleeve A (6), upper tapered sleeve B (11), lower tapered sleeve B (16), set piston at lower tapered sleeve A (9)
(2), clamp spring (5) and retaining set (3) are sleeved on central tube (10), wherein upper tapered sleeve A (6) and lower tapered sleeve A (9) are inserted into
The both ends of packing element (7) are provided on the inside of packing element (7) both ends and are matched with the circular conical surface on the outside of upper tapered sleeve A (6) and lower tapered sleeve A (9)
Circular conical surface, flower basket type bushing (8) is provided on the inside of the packing element (7), flower basket type bushing (8) is cylinder-like structure,
At least 10 axial joint-cuttings (18) are provided on outer wall, the incision direction of adjacent two axial joint-cuttings (18) is on the contrary, described
The end of upper tapered sleeve A (6) and lower tapered sleeve A (9) is inserted in the inside at flower basket type bushing (8) both ends, the upper tapered sleeve B (11) and under
Tapered sleeve B (16) sets up separately during the circular conical surface on the outside of the both sides up and down of slips (12), upper tapered sleeve B (11) and lower tapered sleeve B (16) is inserted in
Between heart pipe (10) and slips (12), set piston (2), clamp spring (5) and the retaining set (3) are respectively positioned on tapered sleeve A's (6)
Upside, wherein clamp spring (5) is axially fixed in by clip spring seat (4) on central tube (10), and the piston (2) that sets is located at only
The upper end of drill drift (3), the clamp spring (5) are located at the inside of retaining set (3) lower end, the outside of clamp spring (5) and retaining set (3)
Inside is provided with the retaining screw thread pair for preventing the upward return of retaining set (3), and the upper end of the hydraulic setting formula bridge plug is set
It is equipped with releasing gadget (1), the lower end of hydraulic setting formula bridge plug is provided with ball sealer (14), and ball sealer (14) passes through spacing ring (15)
It is encapsulated in ball seat (13)；The axial spacing of the upper tapered sleeve A (6) and lower tapered sleeve A (9) sets distance greatly than packing element (7)
5mm；The upper tapered sleeve A (6) is identical with the lower taper of tapered sleeve A (9), is 1：2；The upper tapered sleeve A (6) and lower tapered sleeve A
(9) the cyclic annular limiting section (19) radially limited to packing element (7) edge is provided on the outside of；Spacing ring (15) center
Up and down in two along being both provided with and the matched sealing surface of spherical surface on the ball sealer (14) of circular hole；The axial direction
The number of joint-cutting (18) is even number；The width of the axial joint-cutting (18) is less than 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034660.XA CN107939337B (en) | 2018-01-12 | 2018-01-12 | Hydraulic setting formula bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034660.XA CN107939337B (en) | 2018-01-12 | 2018-01-12 | Hydraulic setting formula bridge plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107939337A CN107939337A (en) | 2018-04-20 |
| CN107939337B true CN107939337B (en) | 2018-08-07 |
Family
ID=61938671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810034660.XA Active CN107939337B (en) | 2018-01-12 | 2018-01-12 | Hydraulic setting formula bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939337B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316885B (en) * | 2018-04-27 | 2018-12-21 | 大庆市晟威机械制造有限公司 | A kind of bridge plug with combination packing element |
| CN110685634A (en) * | 2019-11-06 | 2020-01-14 | 陕西航天德林科技集团有限公司 | Sealing rubber sleeve, fishing-free packer and setting method thereof |
| CN117166953B (en) * | 2023-11-02 | 2024-02-06 | 大庆市璞庆钻采设备制造有限公司 | Mechanical wellhead sealing protection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851078U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Underground isolation bridge plug |
| CN203362107U (en) * | 2013-07-30 | 2013-12-25 | 大庆恒源利通石油机械设备制造有限公司 | Salvageable and drillable suspension bridge plug |
| CN207111042U (en) * | 2018-01-12 | 2018-03-16 | 大庆市天德忠石油科技有限公司 | Hydraulic setting formula bridging plug |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9004160B2 (en) * | 2013-01-09 | 2015-04-14 | Donald J. Greenlee | Downhole tool apparatus with slip plate and wedge |
-
2018
- 2018-01-12 CN CN201810034660.XA patent/CN107939337B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851078U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Underground isolation bridge plug |
| CN203362107U (en) * | 2013-07-30 | 2013-12-25 | 大庆恒源利通石油机械设备制造有限公司 | Salvageable and drillable suspension bridge plug |
| CN207111042U (en) * | 2018-01-12 | 2018-03-16 | 大庆市天德忠石油科技有限公司 | Hydraulic setting formula bridging plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107939337A (en) | 2018-04-20 |
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