CN105370240B - Bidirectional seat-hung bridge plug easy to pump - Google Patents
Bidirectional seat-hung bridge plug easy to pump Download PDFInfo
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- CN105370240B CN105370240B CN201510657329.XA CN201510657329A CN105370240B CN 105370240 B CN105370240 B CN 105370240B CN 201510657329 A CN201510657329 A CN 201510657329A CN 105370240 B CN105370240 B CN 105370240B
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- cylinder
- bridging plug
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- 230000002457 bidirectional effect Effects 0.000 title abstract 3
- 238000005086 pumping Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 241000239290 Araneae Species 0.000 claims description 22
- 238000007373 indentation Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 241001074085 Scophthalmus aquosus Species 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 210000000664 rectum Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
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Abstract
The invention discloses a bidirectional seat-hung easy-pumping bridge plug, which comprises: the sealing device comprises a coupling (1), an upper central tube (2), a hydraulic cylinder (3), a sealing ring (4), a sealing ring (5), an upper pushing cylinder (6), rectangular teeth (7), radial threaded holes (8), a releasing shear pin (9), a limiting ring (10), a limiting screw (11), a radial threaded hole (12), a soluble ball (13), a setting shear pin (14), a lower central tube (15), a locking ring (16), a lower pushing cylinder (17), an upper rubber seat (18), a rubber cylinder (19), a supporting ring (20), a lower rubber seat (21), a setting shear pin (22), a conical cylinder (23), slips (24), a stress ring (25), a slip seat (26), a pumping head (27) and a fastening ring (28). The invention effectively solves the technical problems of small drift diameter, complex bidirectional seat hanging structure, low pumping efficiency and low drilling and grinding efficiency of the conventional bridge plug.
Description
Technical field
The invention belongs to the staged fracturing completion practice field in oil-gas field development, more particularly, to one kind horizontal well,
Sidetracked hole, extended reach well, Multilateral Wells and peupendicular hole hang easily pumping bridging plug in staged fracturing operation using two-way seat.
Background technology
At present, the bridging plug latus rectum being used in staged fracturing completion practice is smaller, limits ability of the liquid by bridging plug,
After fracturing work must subdrilling fall bridging plug, could obtain abundance Liquid output, which results in can not be thrown immediately after fracturing work
Production, and double slips could realize that two-way seat is hung to the bridging plug needs used at present up and down, and bridging plug is complicated.In high angle hole
When section and net horizontal section pumping bridging plug, pump liquid is small to the acting surface of bridging plug, and bridging plug pumping efficiency is not high.And bore and remove in bridging plug
When, bridging plug is not bored except that will come off by complete, is continued to bore except bridging plug comes off part, the feelings rotated together with drill bit occur in bridging plug
Condition, cause brill mill inefficient.
The content of the invention
In order to solve, existing bridging plug latus rectum is small, two-way seat hanging hang structure is complicated, pumping efficiency is not high and it is inefficient to bore mill
Technical problem, the present invention provide one kind and are used for horizontal well, sidetracked hole, extended reach well, Multilateral Wells and peupendicular hole staged fracturing operation
Middle (big orifice) two-way seat used hangs easily pumping bridging plug.
The invention provides a kind of two-way seat to hang easily pumping bridging plug, including：
Box cupling (1), upper center tube (2), hydraulic cylinder (3), sealing ring (4), sealing ring (5), upper pushing cylinder (6), rectangular teeth
(7), radial screw bore (8), shear pin of giving up (9), spacing ring (10), stop screw (11), radial screw bore (12), solvable ball
(13), set shear pin (14), lower center tube (15), retaining ring (16), lower pushing cylinder (17), upper rubber base (18), rubber tube (19),
Support ring (20), lower rubber base (21), sit card shear pin (22), cone cylinder (23), slips (24), NOL ring (25), slip spider (26),
Pump head (27), dead ring (28)；
Wherein, box cupling (1) both ends are provided with internal thread, and box cupling (1) lower end is connected through a screw thread with upper center tube (2)；
The upper center tube (2) is multi-diameter shaft, and one end is provided with axial hole, and being provided with liquid stream on the bottom body of axial hole leads to
Road, the hydraulic cylinder (3) are provided with the pipe of shoulder hole for inside, and one end of hydraulic cylinder (3) is provided with external screw thread, upper center tube (2)
Thin axle through at the minimum internal orifice dimension section of hydraulic cylinder (3), the thin axle of upper center tube (2) and the minimum internal orifice dimension of hydraulic cylinder (3)
Section realizes and sealed that the maximum outside diameter section of upper center tube (2) stretches into the maximum inner diameter hole section of hydraulic cylinder (3) by sealing ring (5), on
The maximum outside diameter section of central tube (2) is realized by sealing ring (4) with the maximum inner diameter hole section of hydraulic cylinder (3) and sealed；
To open female pipe, upper pushing cylinder (6) is connected the upper pushing cylinder (6) by screw thread with hydraulic cylinder (3), spacing
Ring (10) is provided with internal thread, and spacing ring (10) is connected through a screw thread with upper center tube (2), and spacing ring (10) outer surface is provided with recessed
Groove；
Lower center tube (15) endoporus is shoulder hole, and lower center tube (15) large aperture is realized to small-bore by bellmouth
Transition, for solvable ball (13) seat at the bellmouth of lower center tube (15), lower center tube (15) one end is machined with uniform rectangle
Tooth (7), a radial screw bore (8) is provided with each rectangular teeth (7), beside lower center tube (15) rectangular teeth (7) root
Body on be provided with second row radial screw bore (12)；
The radial screw bore (8) that the shear pin of giving up (9) is screwed on lower center tube (15) rectangular teeth, and it extend into spacing ring
(10) in groove, the connection of lower center tube (15) and spacing ring (10) is realized, stop screw (11) screws in lower center tube (15)
Second row radial screw bore (12) place, lower center tube (15) outer surface is provided with one section of zigzag external screw thread；
The retaining ring (16) is the radially shrinkable annulus for being provided with zigzag internal thread, retaining ring (16) and lower center tube
(15) connected by saw-tooth thread, the lower pushing cylinder (17) is enclosed on lower center tube (15), and lower pushing cylinder (17) is cut by setting
Nail (14) is fixedly connected with lower center tube (15), and retaining ring (16) is located in lower pushing cylinder (17) endoporus, and retaining ring (16) end
Withstand lower pushing cylinder (17) endoporus step；
The upper rubber base (18) is enclosed on lower center tube (15), and upper rubber base (18) one end is withstood on lower pushing cylinder (17),
The rubber tube (19) is enclosed on lower center tube (15), and rubber tube (19) both ends are respectively located in rubber base (18) and lower rubber base
(21) on, groove is provided with the middle part of rubber tube (19) endoporus, support ring (20) is located at rubber tube (19) endoporus central slot；
The endoporus of the cone cylinder (23) is shoulder hole, outer surface platform of cone cylinder (23) the endoporus step-shaped top in lower center tube (15)
On rank, cone cylinder (23) is enclosed on lower center tube (15), by sitting card shear pin (22) even between cone cylinder (23) and lower center tube (15)
Connect；
It is inclined-plane on the inside of described slips (24) one end, the inclined-plane of slips (24) coordinates with the inclined-plane of cone cylinder (23), each card
Groove is provided with the middle part of the outer surface of watt (24), the NOL ring (25) is the annulus for being provided with axial fracture, and NOL ring (25) is enclosed on
In the groove of slips (24), the slip spider (26) is connected by screw thread with lower center tube (15), and slips (24) extend into slips
In the rectangular indentation of seat (26)；
Described pumping head (27) material is rubber, and one end of slip spider (26), which is extend into the groove of pumping head (27), to be realized
The positioning of head (27) is pumped, dead ring (28) is connected through a screw thread with lower center tube (15), and pumping head (27) seat is in dead ring
(28) in, uniform rectangular indentation is processed into dead ring (28) one end.
Preferably, the fluid course with being in axially 40 ° is provided with the bottom body of axial hole.
Preferably, fluid course quantity is provided with the bottom body of axial hole as 2-3.
Preferably, spacing ring (10) outer surface is provided with circumferential recess.
Preferably, cone cylinder (23) one end is provided with 6-8 and the axial inclined-plane into 14 °.
Preferably, the end of slip spider (26) is evenly equipped with the rectangular indentation consistent with slips quantity.
Preferably, the external diameter for pumping head (27) is bigger 5-10mm than the external diameter of slip spider (26).
Preferably, the quantity of dead ring (28) rectangular indentation and the end rectangular teeth quantity of lower center tube (15) are identical.
Preferably, hydraulic cylinder (3), upper pushing cylinder (6), lower pushing cylinder (17), upper rubber base (18), rubber tube (19), lower rubber
Seat (21), cone cylinder (23), slip spider (26), the external diameter of dead ring (28) are 113mm, and the internal diameter of lower center tube (15) is
76.2mm。
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
In the embodiment of the present application, the two-way seat is hung easily pumping bridging plug, bridging plug external diameter 113mm, internal diameter and reached
76.2mm, the big orifice of bridging plug is realized, can directly be gone into operation after pressure break completion, improve operation speed.It is cased with bridging plug slips
NOL ring, NOL ring is gradually opened when bridging plug sits card, and slips realizes that the two-way seat of bridging plug is hung after sitting card, so as to which row's slips is realized
Two-way seat is hung, and structure greatly simplifies.Pumping head with big external diameter can make bridging plug in High angle well section and net horizontal section pump
There is the stress surface of abundance when sending, pumping efficiency greatly improves.Brill is when removing bridging plug, what upper level bridging plug was not drilled come off the tight of part
Gu ring contains rectangular indentation, be intermeshed with the lower center tube end rectangular teeth of next stage bridging plug, continue to bore except come off part when
Bridging plug will not rotate with drill bit, improve brill mill efficiency.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing.
Fig. 1 is the structural representation that two-way seat hangs easily pumping bridging plug in the embodiment of the present application；
Fig. 2 is the operating tool string figure that two-way seat hangs easily pumping bridging plug in the embodiment of the present application.
Description of symbols：1- box cuplings, 2- upper center tubes, 3- hydraulic cylinders, 4- sealing rings, 5- sealing rings, the upper pushing cylinders of 6-, 7- rectangles
Tooth, 8- radial screw bores, 9- give up shear pin, 10- spacing rings, 11- stop screws, 12- radial screw bores, the solvable balls of 13-, 14-
Set pushing cylinder under shear pin, 15- lower center tubes, 16- retaining rings, 17-, the upper rubber bases of 18-, 19- rubber tubes, 20- support rings, 21-
Lower rubber base, 22- sit card shear pin, 23- cone cylinders, 24- slips, 25- NOL rings, 26- slip spiders, 27- pumpings head, 28- dead rings,
29- running tools, 30- setting tools, 31- bridging plugs.
Embodiment
In order to solve, existing bridging plug latus rectum is small, two-way seat hanging hang structure is complicated, pumping efficiency is not high and it is inefficient to bore mill
Technical problem, the present invention provide one kind and are used for horizontal well, sidetracked hole, extended reach well, Multilateral Wells and peupendicular hole staged fracturing operation
Middle (big orifice) two-way seat used hangs easily pumping bridging plug.
The present invention will be further described for 1, Fig. 2 and embodiment below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1, (big orifice) two-way seat of the invention, which hangs easily pumping bridging plug, mainly to be included：Box cupling 1, upper center tube 2, liquid
Cylinder pressure 3, sealing ring 4, sealing ring 5, upper pushing cylinder 6, rectangular teeth 7, radial screw bore 8, shear pin 9 of giving up, spacing ring 10, stop screw
11st, radial screw bore 12, solvable ball 13, set shear pin 14, lower center tube 15, retaining ring 16, lower pushing cylinder 17, upper rubber base 18,
Rubber tube 19, support ring 20, lower rubber base 21, seat card shear pin 22, cone cylinder 23, slips 24, NOL ring 25, slip spider 26, pumping
First 27, dead ring 28.
Wherein, hydraulic cylinder 3, upper pushing cylinder 6, lower pushing cylinder 17, upper rubber base 18, rubber tube 19, lower rubber base 21, cone cylinder 23,
Slip spider 26, the external diameter of dead ring 28 are 113mm.
The both ends of box cupling 1 are provided with internal thread, and the lower end of box cupling 1 is connected through a screw thread with upper center tube 2.The upper end of box cupling 1 is with setting
Instrument 30 connects.
Upper center tube 2 is multi-diameter shaft, and one end is provided with axial hole, and 2-3 and axial direction are provided with the bottom body of axial hole
In 40 ° of fluid course.
Hydraulic cylinder 3 is provided with the pipe of shoulder hole for inside, and one end of hydraulic cylinder 3 is provided with external screw thread.The thin axle of upper center tube 2
Through at the minimum internal orifice dimension section of hydraulic cylinder 3, the thin axle of upper center tube 2 passes through sealing ring 5 with the minimum internal orifice dimension section of hydraulic cylinder 3
Realize sealing.The maximum outside diameter section of upper center tube 2 stretches into the maximum inner diameter hole section of hydraulic cylinder 3, the maximum outside diameter section of upper center tube 2
Realized and sealed by sealing ring 4 with the maximum inner diameter hole section of hydraulic cylinder 3.
To open female pipe, upper pushing cylinder 6 is connected upper pushing cylinder 6 by screw thread with hydraulic cylinder 3.
Spacing ring 10 is provided with internal thread, and spacing ring 10 is connected through a screw thread with upper center tube 2.The outer surface of spacing ring 10 is provided with
Circumferential recess.
Lower center tube 15 is minimum diameter Φ 76.2mm pipe, and the endoporus of lower center tube 15 is shoulder hole, lower center tube 15
The transition to small-bore is realized by bellmouth in large aperture.Solvable 13, ball is at the bellmouth of lower center tube 15.Lower center tube
15 one end are machined with uniform rectangular teeth 7, and a radial screw bore 8 is provided with each rectangular teeth 7.
Second row radial screw bore 12 is provided with the body beside the root of 15 rectangular teeth of lower center tube 7.Shear pin 9 of giving up revolves
Enter the radial screw bore 8 on the rectangular teeth of lower center tube 15, and extend into the circumferential recess of spacing ring 10, realize lower center tube 15
With the connection of spacing ring 10.Stop screw 11 is screwed at the second row radial screw bore 12 of lower center tube 15.Outside lower center tube 15
Surface is provided with one section of zigzag external screw thread.
Retaining ring 16 is to be provided with the radially shrinkable annulus of zigzag internal thread.Retaining ring 16 passes through saw with lower center tube 15
Tooth form is threadedly coupled.
Lower pushing cylinder 17 is enclosed on lower center tube 15, and lower pushing cylinder 17 is fixedly connected by setting shear pin 14 with lower center tube 15.
Retaining ring 16 is located in the lower endoporus of pushing cylinder 17, and the lower endoporus step of pushing cylinder 17 is withstood in the end of retaining ring 16.
Upper rubber base 18 is enclosed on lower center tube 15, and upper one end of rubber base 18 is withstood on lower pushing cylinder 17.
Rubber tube 19 is enclosed on lower center tube 15, and the both ends of rubber tube 19 are respectively located in rubber base 18 and lower rubber base 21
On.Groove is provided with the middle part of the endoporus of rubber tube 19, support ring 20 is located at the endoporus central slot of rubber tube 19.
The endoporus of cone cylinder 23 is shoulder hole, and the endoporus step-shaped top of cone cylinder 23 is on the outer surface step of lower center tube 15.Cone cylinder
23 are enclosed on lower center tube 15, are connected between cone cylinder 23 and lower center tube 15 by sitting card shear pin 22.The one end of cone cylinder 23 is provided with 6-8
It is individual with axially into 14 ° of inclined-plane.
It is inclined-plane on the inside of each one end of slips 24, the inclined-plane of slips 24 coordinates with the inclined-plane of cone cylinder 23.Each slips 18
Groove is provided with the middle part of outer surface.
NOL ring 25 is the annulus for being provided with axial fracture, and NOL ring 25 is enclosed in the groove of slips 24.
Slip spider 26 is connected by screw thread with lower center tube 15, and the end of slip spider 26 is evenly equipped with consistent with slips quantity
Rectangular indentation, slips 24 are extend into the end rectangular indentation of slip spider 26.
First 27 material of pumping is rubber, and the external diameter of pumping first 27 is bigger 5-10mm than the external diameter of slip spider 26.Slip spider 26
One end extend into the groove of pumping first 27 positioning for realizing pumping first 27.
Dead ring 28 is connected through a screw thread with lower center tube 15.First 27 of pumping is in dead ring 28.The one end of dead ring 28
Uniform rectangular indentation is processed into, the quantity of the rectangular indentation of dead ring 28 is identical with the end rectangular teeth quantity of lower center tube 15.
Two-way seat hangs the course of work of easily pumping bridging plug in the present invention, as follows：
Two-way seat in the present invention is hung into easily pumping bridging plug to assemble, bridging plug 31 is transferred into well using running tool 29.When
, it is necessary to which pumping makes bridging plug pass through big hole deviation well section when transferring bridging plug using cable in high angle hole or horizontal well.Bridging plug
When setting, highly pressurised liquid enters in hydraulic cylinder 3 by the endoporus of upper center tube 2 and by inclined hole.With in hydraulic cylinder 3, liquid is not
It is disconnected to increase, set shear pin 14 and cut, hydraulic cylinder 3, upper pushing cylinder 6, retaining ring 16, lower pushing cylinder 17 and upper rubber base 18 are used as first
Tubing string moves to a direction, and upper rubber base 18 gives 19 1 extruding forces of rubber tube, box cupling 1, upper center tube 2, spacing ring 10,
Lower center tube 15, lower rubber base 21, cone cylinder 23, slips 24, slip spider 26, pumping first 27 and dead ring 28 as second tubing string to
The direction motion opposite with the first tubing string direction of motion, and lower rubber base 21 gives 19 1 extruding forces of rubber tube.Rubber tube 19 exists
It is radially expanded under the Bidirectional-squeezing of upper rubber base 18 and lower rubber base 21, final rubber tube 19 seals up lower center tube 15 and pit shaft
Annular space between sleeve pipe.As liquid is on the increase in hydraulic cylinder 3, sits card shear pin 22 and cut, while slip spider 26 gives slips
24 1 thrusts, slips 24 are relatively moved with cone cylinder 23, and NOL ring 25 is gradually opened, and the slip insert of slips 24 is pressed into set
Realized on inside pipe wall and sit card.When hydraulic coupling in hydraulic cylinder 3 increases to 13-15MPa, shear pin 9 of giving up is cut, box cupling 1, it is upper in
Heart pipe 2, spacing ring 10 continue to move to together.When spacing ring 10 moves to the end of hydraulic cylinder 3, drive hydraulic cylinder 3 and above push away
Cylinder 6 moves together, and is finally suggested well head.Because the retaining of saw-tooth thread is made between retaining ring 16 and lower center tube 15
With making to keep geo-stationary between lower pushing cylinder 17 and lower center tube 15, so as to which ensure that bridging plug sets and sit card effect.Bridging plug
After setting card, play ball-and-seat between the conical bore of solvable ball 13 and lower center tube 15, and solvable ball 13 is at one section
Between after can voluntarily dissolve.After well fracturing operation, because bridging plug internal diameter is 76.2mm, can directly it go into operation.Removed when carrying out brill
During bridging plug operation, because retaining ring 16 is drilled except bridging plug deblocking releasing is caused, bridging plug is not drilled just to come off upper level bridging plug.Upper one
Level bridging plug come off part dead ring 28 rectangular indentation be meshed with the end rectangular teeth 7 of next stage bridging plug lower center tube 15 consolidate
It is fixed, so upper level bridging plug can be come off partly efficiently to bore together when boring next stage bridging plug and removed.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
In the embodiment of the present application, the two-way seat is hung easily pumping bridging plug, bridging plug external diameter 113mm, internal diameter and reached
76.2mm, the big orifice of bridging plug is realized, can directly be gone into operation after pressure break completion, improve operation speed.It is cased with bridging plug slips
NOL ring, NOL ring is gradually opened when bridging plug sits card, and slips realizes that the two-way seat of bridging plug is hung after sitting card, so as to which row's slips is realized
Two-way seat is hung, and structure greatly simplifies.Pumping head with big external diameter can make bridging plug in High angle well section and net horizontal section pump
There is the stress surface of abundance when sending, pumping efficiency greatly improves.Brill is when removing bridging plug, what upper level bridging plug was not drilled come off the tight of part
Gu ring contains rectangular indentation, be intermeshed with the lower center tube end rectangular teeth of next stage bridging plug, continue to bore except come off part when
Bridging plug will not rotate with drill bit, improve brill mill efficiency.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (8)
1. a kind of two-way seat hangs easily pumping bridging plug, it is characterised in that including：
Box cupling (1), upper center tube (2), hydraulic cylinder (3), sealing ring I (4), sealing ring II (5), upper pushing cylinder (6), rectangular teeth (7),
Radial screw bore I (8), shear pin of giving up (9), spacing ring (10), stop screw (11), radial screw bore II (12), solvable ball
(13), set shear pin (14), lower center tube (15), retaining ring (16), lower pushing cylinder (17), upper rubber base (18), rubber tube (19),
Support ring (20), lower rubber base (21), sit card shear pin (22), cone cylinder (23), slips (24), NOL ring (25), slip spider (26),
Pump head (27), dead ring (28)；
Wherein, box cupling (1) both ends are provided with internal thread, and box cupling (1) lower end is connected through a screw thread with upper center tube (2)；
The upper center tube (2) is multi-diameter shaft, and one end is provided with axial hole, and fluid course is provided with the bottom body of axial hole,
The hydraulic cylinder (3) is provided with the pipe of shoulder hole for inside, and one end of hydraulic cylinder (3) is provided with external screw thread, upper center tube (2) it is thin
Axle is passed through at the minimum internal orifice dimension section of hydraulic cylinder (3), and the thin axle of upper center tube (2) leads to the minimum internal orifice dimension section of hydraulic cylinder (3)
Cross sealing ring II (5) and realize sealing, the maximum outside diameter section of upper center tube (2) stretches into the maximum inner diameter hole section of hydraulic cylinder (3), in upper
The maximum outside diameter section of heart pipe (2) is realized by sealing ring I (4) with the maximum inner diameter hole section of hydraulic cylinder (3) and sealed；
The upper pushing cylinder (6) is opens female pipe, and upper pushing cylinder (6) is connected by screw thread with hydraulic cylinder (3), spacing ring
(10) internal thread is provided with, spacing ring (10) is connected through a screw thread with upper center tube (2), and spacing ring (10) outer surface is provided with groove；
Lower center tube (15) endoporus is shoulder hole, and lower center tube (15) large aperture realizes the mistake to small-bore by bellmouth
Cross, for solvable ball (13) seat at the bellmouth of lower center tube (15), lower center tube (15) one end is machined with uniform rectangular teeth
(7) a radial screw bore I (8), is provided with each rectangular teeth (7), beside lower center tube (15) rectangular teeth (7) root
Second row radial screw bore II (12) is provided with body；
The radial screw bore I (8) that the shear pin of giving up (9) is screwed on lower center tube (15) rectangular teeth, and it extend into spacing ring
(10) in groove, the connection of lower center tube (15) and spacing ring (10) is realized, stop screw (11) screws in lower center tube (15)
Second row radial screw bore II (12) place, lower center tube (15) outer surface is provided with one section of zigzag external screw thread；
The retaining ring (16) is the radially shrinkable annulus for being provided with zigzag internal thread, retaining ring (16) and lower center tube (15)
Connected by saw-tooth thread, the lower pushing cylinder (17) is enclosed on lower center tube (15), and lower pushing cylinder (17) is by setting shear pin
(14) it is fixedly connected with lower center tube (15), retaining ring (16) is located in lower pushing cylinder (17) endoporus, and retaining ring (16) end is pushed up
Stay pushing cylinder (17) endoporus step；
The upper rubber base (18) is enclosed on lower center tube (15), and upper rubber base (18) one end is withstood on lower pushing cylinder (17), described
Rubber tube (19) is enclosed on lower center tube (15), and rubber tube (19) both ends are respectively located in rubber base (18) and lower rubber base (21)
On, groove is provided with the middle part of rubber tube (19) endoporus, support ring (20) is located at rubber tube (19) endoporus central slot；
The endoporus of the cone cylinder (23) is shoulder hole, outer surface step of cone cylinder (23) the endoporus step-shaped top in lower center tube (15)
On, cone cylinder (23) is enclosed on lower center tube (15), is connected between cone cylinder (23) and lower center tube (15) by sitting card shear pin (22)；
It is inclined-plane on the inside of described slips (24) one end, the inclined-plane of slips (24) coordinates with the inclined-plane of cone cylinder (23), each slips
(24) groove is provided with the middle part of outer surface, the NOL ring (25) is the annulus for being provided with axial fracture, and NOL ring (25) is enclosed on card
In the groove of watt (24), the slip spider (26) is connected by screw thread with lower center tube (15), and slips (24) extend into slip spider
(26) in rectangular indentation；
Described pumping head (27) material is rubber, and one end of slip spider (26), which is extend into the groove of pumping head (27), realizes pumping
The positioning of head (27), dead ring (28) are connected through a screw thread with lower center tube (15), pump head (27) seat in dead ring (28),
It is processed into uniform rectangular indentation in dead ring (28) one end.
2. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that is provided with the bottom body of axial hole
Fluid course with being in axially 40 °.
3. two-way seat as claimed in claim 2 hangs easily pumping bridging plug, it is characterised in that is provided with the bottom body of axial hole
Fluid course quantity is 2-3.
4. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that spacing ring (10) outer surface is provided with circumference
Groove.
5. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that cone cylinder (23) one end be provided with 6-8 with
Axially into 14 ° of inclined-plane.
6. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that the end of slip spider (26) be evenly equipped with
The consistent rectangular indentation of slips quantity.
7. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that the external diameter of pumping head (27) compares slip spider
(26) the big 5-10mm of external diameter.
8. two-way seat as claimed in claim 1 hangs easily pumping bridging plug, it is characterised in that the quantity of dead ring (28) rectangular indentation
It is identical with the end rectangular teeth quantity of lower center tube (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510657329.XA CN105370240B (en) | 2015-10-13 | 2015-10-13 | Bidirectional seat-hung bridge plug easy to pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510657329.XA CN105370240B (en) | 2015-10-13 | 2015-10-13 | Bidirectional seat-hung bridge plug easy to pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105370240A CN105370240A (en) | 2016-03-02 |
| CN105370240B true CN105370240B (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510657329.XA Active CN105370240B (en) | 2015-10-13 | 2015-10-13 | Bidirectional seat-hung bridge plug easy to pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105370240B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735620B (en) * | 2018-07-18 | 2021-10-19 | 中国石油化工股份有限公司 | Functional pipe column for communicating reservoir and method for communicating reservoir |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557691Y (en) * | 2002-07-18 | 2003-06-25 | 阜新市石油工具厂 | Fishable high pressure bridge plug |
| CN201269078Y (en) * | 2008-11-04 | 2009-07-08 | 孔宪春 | Hydraulic release type mechanical bridge plug |
| CN201420529Y (en) * | 2009-01-05 | 2010-03-10 | 顾明祥 | Removable bridge plug |
| CN201420527Y (en) * | 2009-06-08 | 2010-03-10 | 阜新驰宇石油机械有限公司 | Staged fracturing bridge plug |
| US8205671B1 (en) * | 2009-12-04 | 2012-06-26 | Branton Tools L.L.C. | Downhole bridge plug or packer assemblies |
| CN202381036U (en) * | 2011-12-15 | 2012-08-15 | 中国石油天然气股份有限公司 | Suspension type squeezing bridge plug |
| CN203097815U (en) * | 2013-05-04 | 2013-07-31 | 阜宁县宏达石化机械有限公司 | Retrievable setting and squeezing integrated bridge plug |
| CN203847063U (en) * | 2014-02-27 | 2014-09-24 | 孔利生 | Gradual-cracking bridge plug in horizontal well pipe |
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN204419167U (en) * | 2014-12-08 | 2015-06-24 | 中国石油化工股份有限公司 | One is given up and is tested envelope integrated pipe column |
| CN204492751U (en) * | 2015-02-16 | 2015-07-22 | 中国石油集团渤海钻探工程有限公司 | With the bridging plug instrument of solvable ball |
| CN104879090A (en) * | 2015-06-12 | 2015-09-02 | 西南石油大学 | Fast-drilling composite bridge plug adopting single-slip double-acting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2489984B (en) * | 2011-04-15 | 2015-11-04 | Aker Well Service As | Bridge plug tool |
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2015
- 2015-10-13 CN CN201510657329.XA patent/CN105370240B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2557691Y (en) * | 2002-07-18 | 2003-06-25 | 阜新市石油工具厂 | Fishable high pressure bridge plug |
| CN201269078Y (en) * | 2008-11-04 | 2009-07-08 | 孔宪春 | Hydraulic release type mechanical bridge plug |
| CN201420529Y (en) * | 2009-01-05 | 2010-03-10 | 顾明祥 | Removable bridge plug |
| CN201420527Y (en) * | 2009-06-08 | 2010-03-10 | 阜新驰宇石油机械有限公司 | Staged fracturing bridge plug |
| US8205671B1 (en) * | 2009-12-04 | 2012-06-26 | Branton Tools L.L.C. | Downhole bridge plug or packer assemblies |
| CN202381036U (en) * | 2011-12-15 | 2012-08-15 | 中国石油天然气股份有限公司 | Suspension type squeezing bridge plug |
| CN203097815U (en) * | 2013-05-04 | 2013-07-31 | 阜宁县宏达石化机械有限公司 | Retrievable setting and squeezing integrated bridge plug |
| CN203847063U (en) * | 2014-02-27 | 2014-09-24 | 孔利生 | Gradual-cracking bridge plug in horizontal well pipe |
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN204419167U (en) * | 2014-12-08 | 2015-06-24 | 中国石油化工股份有限公司 | One is given up and is tested envelope integrated pipe column |
| CN204492751U (en) * | 2015-02-16 | 2015-07-22 | 中国石油集团渤海钻探工程有限公司 | With the bridging plug instrument of solvable ball |
| CN104879090A (en) * | 2015-06-12 | 2015-09-02 | 西南石油大学 | Fast-drilling composite bridge plug adopting single-slip double-acting structure |
Also Published As
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|---|---|
| CN105370240A (en) | 2016-03-02 |
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