CN207004474U - Blanking plug in a kind of multi-functional oil water well tube - Google Patents
Blanking plug in a kind of multi-functional oil water well tube Download PDFInfo
- Publication number
- CN207004474U CN207004474U CN201720852230.XU CN201720852230U CN207004474U CN 207004474 U CN207004474 U CN 207004474U CN 201720852230 U CN201720852230 U CN 201720852230U CN 207004474 U CN207004474 U CN 207004474U
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- China
- Prior art keywords
- sleeve
- packing element
- central tube
- cone
- blanking plug
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Abstract
The utility model discloses blanking plug in a kind of multi-functional oil water well tube, including central tube, sleeve, packing element, cone, grappling pawl, the sleeve and packing element are enclosed on outside central tube, its middle sleeve is located above packing element, the packing element upper/lower terminal connects upper baffle ring and lower baffle ring respectively, cone is provided with the central tube, the grappling pawl being engaged with cone is provided with the sleeve, the center bottom of the tube is provided with the pressure cap for compressing packing element.Central tube upper end connects control valve.The sleeve upper end connects hangoff receptacle.The pressure cap is locking nut.Locking nut upper surface top pressure is on the lower surface of lower baffle ring.During job execution, before wellhead tree tree is dismantled, the inner chamber of blanking plug tripping in down-hole string is sealed, prevents the liquid of tubing string internal channel from spraying, you can dismounting wellhead tree tree, is easy to lower step job execution.
Description
Technical field
Oilfield downhole operation construction field is the utility model is related to, is blocked in specifically a kind of multi-functional oil water well tube
Device.
Background technology
The oil-water well of job execution is needed at present, and ground face ring is caused to prevent blowout or acting the greasy dirt that tubing string is subsidiary in well
Border is polluted, and is required for after being washed (pressure) well, is dismantled wellhead tree tree and is recurred out tubing string in well.Part oil-water well is because of oily permeability
It is relatively low, it is necessary to carry out pressure break back-up sand to improve the permeability of oil reservoir, formation porosity increases after pressure break, and the gas stream on stratum is with regard to energy
It is enough smoothly to flow into pit shaft.If borehole pressure is higher, gas stream flows into pit shaft in the presence of strata pressure, sprays ground.For side
Just job execution, operating cost is reduced, is substantially and first takes oil well blowing to produce, treated that borehole pressure decreases up to and be unable to oneself
Spray, then (pressure) well is washed, wellhead tree tree of dismantling, movable tubing string unfreezing, act fracturing string in well, complete flow string.
When oil well blowing produces, gas stream brings a small amount of fracturing sand of oil reservoir into pit shaft, causes the flushing valve in fracturing string to block,
Wash (pressure) well and circulate obstructed, fracturing string (packer) sand card etc..Because the oil-air pressure of oil reservoir is higher, tubing string inner chamber has one
Fixed pressure, it is impossible to dismantle wellhead tree tree, the packer in fracturing string cannot discharge, and oil reservoir liquid is in tubing string bottom
Well head is lifted into tubing string inner chamber, overflow or blowout phenomenon occurs, circulation can not be established or circulate obstructed again by washing kill-job.By
In above-mentioned reason, lead to not dismantle wellhead tree tree in job execution, it is impossible to carry out lower step job execution measure.In order to
Convenient working is constructed, and improves construction speed, and reduction accounts for well cycle and operating cost, and a kind of " multi-functional oil water well tube is developed for this
Interior blanking plug ".
By retrieval, application number：201610050924.1 blocked in a kind of reclaimed oil pipes of publication date 2016-04-13
Device, including back-off sub, fishing head, deblocking mandrel, upper slipses cylinder, packing element mandrel, lower slipses seat, lower contact, lower mandrel, locking
Ratchet；There is a downward opening upper installation axocoel inside of back-off sub, and fishing head is sleeved on installation axle intracavitary, under fishing head
Portion's inwall is fixedly installed togather with unsealing the external wall of upper portion of mandrel, and the top for unsealing mandrel is circumferentially evenly arranged with least two
Individual long axis hole, upper slipses seat is set with the deblocking mandrel below fishing head, the top external diameter of upper slipses seat is less than outside bottom
Footpath, the middle part outer wall of upper slipses seat are transition upper slipses seat external wall of upper portion and the upper frustum of bottom outer wall, the top of upper slipses seat
The spacing hole corresponding with long axis hole is provided with, the axial length of spacing hole is less than the axial length of long axis hole, under spacing hole
At least three upper protruding block is circumferentially evenly arranged with the upper slipses seat external wall of upper portion of side, is formed between two neighboring upper protruding block
Upper slipses stopper slot, upper slipses are provided with by upper slipses ring in upper slipses stopper slot, the lower inner walls of upper slipses be with it is upper
Frustum is engaged upper conical, and the top external diameter of upper slipses is less than the lower outer diameter of upper slipses, divides on the bottom outer wall of upper slipses
Grappling tooth is furnished with, fixture block, upper slipses of the upper slipses jacket casing below back-off sub are provided with the upper end outer wall of upper slipses
On seat, the top bar hole that internal diameter matches with upper slipses top external diameter, the upper slipses in corresponding top bar hole are arranged at the bottom of upper slipses cylinder
The upper latch notch corresponding with upper fixture block is provided with cylinder, upper fixture block is located in upper latch notch respectively, the upper slipses above upper latch notch
Be installed with connecting pin on cylinder, connecting pin be located in the top of spacing hole and long axis hole, upper slipses cylinder and upper slipses seat it
Between be installed with and set pin, be provided with ring of giving up between back-off sub and upper slipses seat, give up ring and back-off sub it
Between be fixedly installed togather by pin of giving up, be installed with C-shaped ring, c-type on the upper slipses seat outer wall above ring of giving up
The external diameter of ring is more than the internal diameter for ring of giving up, and slips connection outer groove is provided with the bottom outer wall of upper slipses seat, in upper slipses seat
Packing element assembly is set with the deblocking mandrel of lower section, the top of slips connection annular groove and packing element assembly is fixedly installed togather；Glue
The bottom of cylinder assembly is provided with lower slipses installation annular groove, and crown court is provided with the packing element assembly on the inside of lower slipses installation annular groove
On locking external tooth, the upper inside wall of lower slipses seat and lower slipses installation annular groove are fixedly installed togather, in the top of lower contact
There is opening up installation cavity, the bottom of lower slipses seat and the inwall of installation cavity are fixedly installed togather, the inside of lower slipses seat
There is opening up lower installation axocoel, the top bar hole and hole of getting out of a predicament or an embarrassing situation that the lower inside for installing axocoel has internal diameter to reduce successively, under
Mandrel is located in the bottom in hole of getting out of a predicament or an embarrassing situation, and the internal diameter in the external diameter of lower mandrel and hole of getting out of a predicament or an embarrassing situation matches, and unseals the bottom outer wall of mandrel
It is fixedly installed togather with the upper inside wall of lower mandrel, deblocking pin is installed between lower mandrel and lower slipses seat, with
Unseal pin and through hole is provided with the lower mandrel on same RADIAL, the bottom outer wall of lower slipses seat is less than lower slipses for external diameter
The grappling installation annular groove of seat top external diameter, the lower slipses seat outer wall that grappling installs above annular groove to grappling installation annular groove is under transition
The lower frustum of slip spider outer wall and grappling installation annular groove, circumferentially it is evenly arranged with grappling installation annular groove under at least three
Projection, lower slipses stopper slot is formed between two neighboring lower protruding block, under being provided with lower slipses stopper slot by lower slipses ring
Slips, the lower outer diameter of lower slipses are less than the external diameter of lower slipses, and the upper inside wall of lower slipses is to be engaged inferior pyramidal with lower frustum
Platform, grappling tooth is distributed with the external wall of upper portion of lower slipses, at least two are circumferentially evenly arranged with the lower end outer wall of lower slipses
Lower fixture block, lower slipses jacket casing is on the lower slipses seat above the lower contact, the top of lower slipses cylinder have internal diameter with lower slipses
The hole of getting out of a predicament or an embarrassing situation that portion's external diameter matches, correspond to and be provided with the under bayonet corresponding with lower fixture block on the lower slipses cylinder in hole of getting out of a predicament or an embarrassing situation, under
Fixture block is respectively under bayonet；Locking pawl is provided between top bar hole and deblocking mandrel, locking pawl is cylindrical,
Land in locking is integrally fixed with the lower inner wall of locking pawl, the lock in locking below land to locking pawl top
Determine to be intervally distributed with axial grid on ratchet, crown locking internal tooth directed downwardly be provided with the upper inside wall of locking pawl,
Locking external tooth and locking internal tooth are engaged.
Technology disclosed above, although the title for having several parts has similarity with the part in the utility model, but
Substantially differed in the annexation or realization principle of structure, and the utility model is simple in construction, and cost is low, profit
In popularization.
Utility model content
The purpose of this utility model is to provide blanking plug in a kind of multi-functional oil water well tube, during job execution, is dismantling
Before wellhead tree tree, the inner chamber of blanking plug tripping in down-hole string is sealed, prevents the liquid of tubing string internal channel from spraying, i.e.,
Detachable wellhead tree tree, is easy to lower step job execution.
In order to reach above-mentioned purpose, the utility model employs following technical scheme, blocked up in a kind of multi-functional oil water well tube
Device is filled in, including central tube, sleeve, packing element, cone, grappling pawl, the sleeve and packing element are enclosed on outside central tube, its middle sleeve
Above packing element, the packing element upper/lower terminal connects upper baffle ring and lower baffle ring respectively, and cone is provided with the central tube,
The grappling pawl being engaged with cone is provided with the sleeve, the center bottom of the tube is provided with the pressure cap for compressing packing element.
Central tube upper end connects control valve.
The sleeve upper end connects hangoff receptacle.
The pressure cap is locking nut.
Locking nut upper surface top pressure is on the lower surface of lower baffle ring.
Compared to prior art, the utility model has the advantages that：
Control valve is connected to central tube upper end, centered on axially through formula structure, and control valve can according to circumstances from
Liquid is discharged by switch, the central tube is used to connect hangoff receptacle, sleeve, grappling pawl, cone, upper baffle ring, rubber cylinder, lower block
Ring, locking nut etc.., it is necessary to dismantle wellhead tree tree after fracture in oil and water wells construction, go out fracturing string and carry out lower step operation to apply
Work, because well head has overflow phenomena can not dismantle production tree, the packer in fracturing string can not release envelope, and wash (pressure) well
Circulation canal blocks, it is impossible to carries out lower step measure construction.The utility model can effectively close down-hole string upper lumen
Oil gas circulation road, wellhead tree tree easy to disassemble, lower step measure construction is carried out, Prevention of blowout, environmental pollution is avoided, improves operation
Construction speed, reduce operating cost.Oil pipe inner chamber available for oil field currently used Ф 62mm and Ф 76mm.
Brief description of the drawings
Fig. 1 is a kind of structural representation of blanking plug in multi-functional oil water well tube.
In figure：Control valve 1, central tube 2, hangoff receptacle 3, sleeve 4, grappling pawl 5, cone 6, upper baffle ring 7, packing element 8, lower baffle ring
9th, locking nut 10.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing is only to refer to
With purposes of discussion, not it is used for being any limitation as the utility model.
Embodiment 1：
As shown in Figure 1, blanking plug in a kind of multi-functional oil water well tube, including central tube 2, sleeve 4, packing element 8, cone 6,
Grappling pawl 5, the sleeve 4 and packing element 8 are enclosed on outside central tube 2, and its middle sleeve is located above packing element, and the packing element is upper and lower
Both ends connect upper baffle ring 7 and lower baffle ring 9 respectively, and cone 6 is provided with the central tube, are provided with the sleeve and cone phase
During the grappling pawl 5 of cooperation, grappling pawl original state are arranged in the anchor hole that sleeve opens up, while grappling pawl diametrically protrudes into
In annular space between heart pipe and sleeve, when then cone moves up, the cone conical surface is gradually pushed outwardly grappling pawl, the central tube
Bottom is provided with the pressure cap for compressing packing element.Central tube upper end connects control valve 1.The sleeve upper end connects hangoff receptacle 3.Control
Valve, grappling pawl, cone and hangoff receptacle processed are prior art, directly apply, repeat no more concrete structure.
The pressure cap is locking nut 10.Locking nut upper surface top pressure is on the lower surface of lower baffle ring.
Production tree valve cured clearly is opened, by tubing plug from the inner chamber tripping in of Cai You Shu Cheongju wax valves to tubing string inner chamber one
Positioning is put, and hangoff receptacle 3 drives bottom lower baffle ring 9 up in oil pipe top, pivot pipe 2, central tube, compression packing element 8 footpath
To expansion, Seal Oil tube cavity space.The cone 6 on central tube moves up simultaneously, pushes grappling pawl 5 open, is tightly stuck on tube inner wall,
Blanking plug is fixed in oil pipe inner chamber, avoid oil-air pressure from ejecting blanking plug, close top control valve 1, complete oil pipe inner chamber
Block.The liquid of oil pipe inner chamber can not spray, and can carry out lower step job execution.When needing to take out blanking plug, top is opened
Control valve 1, the liquid in discharging tube, reversion central tube withdraw packing element and grappling pawl, you can propose.
Embodiment 2：
As shown in Figure 1, blanking plug in a kind of multi-functional oil water well tube, including central tube 2, sleeve 4, packing element 8, cone 6,
Grappling pawl 5, the sleeve 4 and packing element 8 are enclosed on outside central tube 2, and its middle sleeve is located above packing element, and the packing element is upper and lower
Both ends connect upper baffle ring 7 and lower baffle ring 9 respectively, and cone 6 is provided with the central tube, are provided with the sleeve and cone phase
During the grappling pawl 5 of cooperation, grappling pawl original state are arranged in the anchor hole that sleeve opens up, while grappling pawl diametrically protrudes into
In annular space between heart pipe and sleeve, when then cone moves up, the cone conical surface is gradually pushed outwardly grappling pawl, the central tube
Bottom is provided with the pressure cap for compressing packing element.Central tube upper end connects control valve 1.The sleeve upper end connects hangoff receptacle 3.Control
Valve, grappling pawl, cone and hangoff receptacle processed are prior art, directly apply, repeat no more concrete structure.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.
Claims (5)
- A kind of 1. blanking plug in multi-functional oil water well tube, it is characterised in that including central tube, sleeve, packing element, cone, grappling pawl, The sleeve and packing element are enclosed on outside central tube, and its middle sleeve is located above packing element, and the packing element upper/lower terminal connects respectively Upper baffle ring and lower baffle ring, cone is provided with the central tube, the grappling pawl being engaged with cone, institute are provided with the sleeve The center bottom of the tube of stating is provided with the pressure cap for compressing packing element.
- 2. blanking plug in a kind of multi-functional oil water well tube according to claim 1, it is characterised in that central tube upper end connects Control valve.
- 3. blanking plug in a kind of multi-functional oil water well tube according to claim 2, it is characterised in that the sleeve upper end connects Connect hangoff receptacle.
- 4. blanking plug in a kind of multi-functional oil water well tube according to claim 1, it is characterised in that the pressure cap is locking Nut.
- 5. blanking plug in a kind of multi-functional oil water well tube according to claim 4, it is characterised in that on the locking nut End face top pressure is on the lower surface of lower baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720852230.XU CN207004474U (en) | 2017-07-13 | 2017-07-13 | Blanking plug in a kind of multi-functional oil water well tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720852230.XU CN207004474U (en) | 2017-07-13 | 2017-07-13 | Blanking plug in a kind of multi-functional oil water well tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207004474U true CN207004474U (en) | 2018-02-13 |
Family
ID=61454563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720852230.XU Expired - Fee Related CN207004474U (en) | 2017-07-13 | 2017-07-13 | Blanking plug in a kind of multi-functional oil water well tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207004474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554831A (en) * | 2019-09-25 | 2021-03-26 | 中国石油化工股份有限公司 | Well head changing and sealing device |
| CN113027376A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气集团有限公司 | Rotary setting type blanking plug |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
-
2017
- 2017-07-13 CN CN201720852230.XU patent/CN207004474U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554831A (en) * | 2019-09-25 | 2021-03-26 | 中国石油化工股份有限公司 | Well head changing and sealing device |
| CN112554831B (en) * | 2019-09-25 | 2023-02-21 | 中国石油化工股份有限公司 | Well head changing and sealing device |
| CN113027376A (en) * | 2019-12-25 | 2021-06-25 | 中国石油天然气集团有限公司 | Rotary setting type blanking plug |
| CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20180713 |