CN209195367U - A kind of speed column two-stage plugging device - Google Patents
A kind of speed column two-stage plugging device Download PDFInfo
- Publication number
- CN209195367U CN209195367U CN201821769224.9U CN201821769224U CN209195367U CN 209195367 U CN209195367 U CN 209195367U CN 201821769224 U CN201821769224 U CN 201821769224U CN 209195367 U CN209195367 U CN 209195367U
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- connecting tube
- inner connecting
- speed column
- wall
- fixed
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Abstract
The utility model discloses a kind of speed column two-stage plugging devices, inner connecting tube and sand control shield including being connected to speed column lower end, sand control shield is sleeved and fixed on inner connecting tube outer wall, the lower part of inner connecting tube is fixed with guide head, the side wall that the inner connecting tube is located at top is provided with air inlet, the air inlet slide outside is connected with top shoe, top shoe is fixed by shear pad and inner connecting tube, the inner cavity of inner connecting tube is successively fixed with upper plug head and lower end cap from top to bottom, wherein lower end cap is fixed by pin and inner connecting tube, on inner connecting tube side wall below lower end cap and the corresponding position of sand control shield is provided with air inlet.Structure is convenient, sealed reliable, and sand control is convenient, save the cost；Lower end cap is connected to speed column lower part, tightly insulates the channel of gas admission velocity tubing string.Gasket and speed column inner wall form reliable sealing, and lower end cap top is equipped with upper-lower seal set, sealed reliable.Upper plug head is connect with top shoe, realizes that second level blocks function, sealed reliable.
Description
Technical field
The utility model relates to gas field development technical fields to fit more particularly, to a kind of speed column two-stage plugging device
For all straight wells in gas field, directional well.
Background technique
Speed column water pumping gas production is a kind of gas field commonly technology, and principle is to reduce caliber, improves gas stream
Speed, to achieve the purpose that improve gas well fluid-carrying capability.At present running speed tubing string construct when, bottom connect plug, under arrive
Suitable position and after having hung speed column, destroys plug, opening well and making production.When the production later period has needed speed column out, generally
It needs to squeeze into one in well head with coild tubing unit in well head and manages interior blanking plug, block after speed column just implementable
Pipe operation.Current this technology is primarily present following problems: first is that rising, pipe process is cumbersome, and needing working rig to squeeze into, pipe is interior to be blocked
Device；Second is that acting the pipe cannot reuse.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of speed column two-stage plugging devices, by setting
It counts a kind of two-stage plugging device and is connected to speed column bottom, realize tubing string tripping in, rise.In running speed tubing string, together
In tripping in oil pipe.Since the packing of lower end cap acts on during tripping in, the gas inside gas well is unable to admission velocity tubing string, realizes
Level-one blocks function, can facilitate the smooth lower going-into-well bottom of speed column, after well head suspension fixes speed column, is beaten by well head
Pressure will cut pin below plug in high pressure gas injection rate tubing string, fall into guide head under plug, thus downhole gas into
The channel for entering speed column is opened, and gas admission velocity tubing string, gas well normally produce after driving a well.When gas well liquid loading to later period, because
Gas well operation needs or gas well do not had extraction value needed out speed column when, well head pitching pressurization, destroy shearing
Gasket, top shoe falls, and after elastic seal ring is locking, upper plug head just blocks top shoe mouth, realizes that second level blocks function,
Speed column can smoothly rise out.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of speed column two-stage plugging device,
Inner connecting tube and sand control shield including being connected to speed column lower end, sand control shield are sleeved and fixed on inner connecting tube outer wall, are inscribed
The lower part of pipe is fixed with guide head, it is characterised in that: the side wall that the inner connecting tube is located at top is provided with air inlet, the air inlet
Slide outside is connected with top shoe, and top shoe is fixed by shear pad and inner connecting tube, and the inner cavity of inner connecting tube is from top to bottom successively
It is fixed with upper plug head and lower end cap, wherein lower end cap is fixed by pin and inner connecting tube, on the inner connecting tube side wall below lower end cap
And the corresponding position of sand control shield is provided with air inlet.
The upper plug head is the structure that section is cheese head screw, and wherein upper plug head is the half of round end close to one end of top shoe
Spherical structure.
The top shoe is the column structure that both ends are choana, wherein top shoe opening close to upper plug head one end
The matching of the aperture of port radius and upper plug head round end hemispherical dome structure.
It is provided with elastic seal ring between the top shoe outer wall and inscribed inside pipe wall, elastic seal ring is fixed on top shoe
Outer wall on.
The pin is detachably connected along the diametrical direction of inner connecting tube with inner connecting tube.
The inner connecting tube rolling is connected to the bottom of speed column, and speed column lower end surface is protected by sealing ring and sand control
Cover upper surface is fixedly connected, and wherein sealing ring is sleeved and fixed on the outer wall of inner connecting tube.
The upper edge of the sealing ring extends to speed column inner wall and fixes with speed column, and the lower edge of sealing ring extends to
It sand control shield inner wall and is fixed with sand control shield.
Upper sleeve gasket, lower sleeve gasket is also successively nested and fixed in the inscribed pipe outer wall of the sealing ring lower end, wherein under
Sealing shroud is located at lower end cap top.
One end of the upper sleeve gasket is fixedly connected with sealing ring, and the other end and lower sleeve gasket of upper sleeve gasket are fixed to be connected
It connects, wherein upper sleeve gasket, lower sleeve gasket and lower end cap are respectively positioned between inscribed pipe outer wall and sand control shield inner wall.
The guide head lower end is pyramidal structure, and the air inlet has several, several air inlets along inner connecting tube and
It is circumferential evenly distributed on the corresponding position of sand control shield.
The beneficial effects of the utility model are as follows:
(1) structure is convenient, sealed reliable.Lower end cap is connected to speed column lower part, tightly insulates gas admission velocity
The channel of tubing string.Gasket and speed column inner wall form reliable sealing, and lower end cap top is equipped with upper-lower seal set, and sealing can
It leans on.Upper plug head is connect with top shoe, realizes that second level blocks function, sealed reliable.
(2) sand control is convenient, is not required to external force.After cutting pin destroys lower end cap, lower end cap is fallen into guide head, and gas is by preventing
The space of sand shield enters, and realizes effective sand control.
(3) save the cost.Speed column can smoothly rise out, be conducive to reuse, save the cost.
(4) applied widely.Each component in the utility model tubing string can bear high pressure, be suitable in deep-well or high pressure
Work in gas well.It can be used for gas production in inclined shaft.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will be needed below to being said in embodiment description
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the overall structure figure of the utility model.
In figure: 1, speed column；2, elastic seal ring；3, top shoe；4, sealing ring；5, inner connecting tube；6, shear pad；7,
Upper plug head；8, sand control shield；9, upper sleeve gasket；10, lower sleeve gasket；11, lower end cap；12, pin；13, guide head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
A kind of speed column two-stage plugging device, inner connecting tube 5 and sand control shield 8 including being connected to 1 lower end of speed column,
Sand control shield 8 is sleeved and fixed on 5 outer wall of inner connecting tube, and the lower part of inner connecting tube 5 is fixed with guide head 13, it is characterised in that: described
The side wall that inner connecting tube 5 is located at top is provided with air inlet, and the air inlet slide outside is connected with top shoe 3, and top shoe 3 is by cutting
It cuts gasket 6 and inner connecting tube 5 is fixed, the inner cavity of inner connecting tube 5 is successively fixed with upper plug head 7 and lower end cap 11 from top to bottom, wherein under
Plug 11 is fixed by pin 12 and inner connecting tube 5, on 5 side wall of inner connecting tube of 11 lower section of lower end cap and the correspondence of sand control shield 8
Position is provided with air inlet.
In use, helping gas well to take liquid in water-producing gas well production process to reduce caliber increase gas flow rate, needing to take
Speed column drainage gas recovery.Inner connecting tube 5 is connected to 1 lower section of speed column, the gasket 4 outside inner connecting tube 5 plays close
Envelope effect；Inner connecting tube 5 connects upper sleeve gasket 9, and upper sleeve gasket 9 connects lower sleeve gasket 10, and lower sleeve gasket 10 connects lower end cap 11, under
11 lower part of plug is equipped with pin 12.Sand control shield 8 is connect with upper sleeve gasket 9, in the outside of lower end cap 11.Lower end cap 11 is just
It is sealing state in normal state, plays the role of insulating gas-bearing formation and speed column 1；When pin 12 is cut, lower end cap 11 is struck off
Afterwards, the channel of gas-bearing formation admission velocity tubing string is opened, and can normally produce.5 external connection sand control shield 8 of inner connecting tube, plays packing
The effect of gravel admission velocity tubing string 1, avoids thorn leakage pipeline valve, plays guaranteeing role for gas well safety in production.Play Guan Zuoye
When, it pressurizes in well head pitching, shear pad 6 is cut under pressure, and top shoe 3 moves down, when elastic seal ring 2 blocks
After fixed, upper plug head 7 is connect with top shoe 3, realizes that second level blocks function, guarantees that speed column smoothly plays out well head.
Embodiment 2
As shown in Figure 1, it is to improve on the basis of embodiment 1, the upper plug head 7 is the knot that section is cheese head screw
Structure, wherein upper plug head 7 is the hemispherical dome structure of round end close to one end of top shoe 3.It pressurizes in well head pitching, shear pad 6 exists
It is cut under pressure effect, top shoe 3 moves down, and after top shoe 3 and upper plug head 7 are locking, upper plug head 7 and top shoe 3 connect
It connects, realizes that second level blocks function, guarantee that speed column smoothly plays out well head.
The top shoe 3 is the column structure that both ends are choana, and wherein top shoe 3 is close to 7 one end of upper plug head
7 round end hemispherical dome structure of opening radius and upper plug head aperture matching.It is good that top shoe 3 matches sealing effect with upper plug head 7, on
Sliding block 3 is the column structure that both ends are choana, increases the scope of application.
It is provided with elastic seal ring 2 between 3 outer wall of top shoe and 5 inner wall of inner connecting tube, elastic seal ring 2 is fixed on
On the outer wall of sliding block 3.
The pin 12 is detachably connected along the diametrical direction of inner connecting tube 5 with inner connecting tube 5.
Lower end cap 11 is fixed on inner connecting tube 5 by pin 12, lower end cap 11 is sealing state at this time, plays packing gas
The effect of layer and speed column 1；In water-producing gas well production process, is produced using speed column 1 and crude oil pipe ring sky, make inner connecting tube
The lower end cap 11 of 5 inner cavities generates pressure difference above and below, to cut pin 12 and then destroy lower end cap 11, lower end cap 11 is close at this time
Status releasing is sealed, production pipeline opens production model.Detachable connection method facilitates production at this time, saves labour turnover, production
It is high-efficient.
Embodiment 3
As shown in Figure 1, it is improved on the basis of embodiment 1, embodiment 2, the rolling of inner connecting tube 5 is connected to speed
The bottom of tubing string 1,1 lower end surface of speed column are fixedly connected by sealing ring 4 with 8 upper surface of sand control shield, wherein sealing ring 4
It is sleeved and fixed on the outer wall of inner connecting tube 5.Using rolling connection type, flexible deformation is small, good airproof performance, and yield strength is high, even
Connect performance height.
The upper edge of the sealing ring 4 extends to 1 inner wall of speed column and fixes with speed column 1, and the lower edge of sealing ring 4 is prolonged
It extends to 8 inner wall of sand control shield and is fixed with sand control shield 8.
Upper sleeve gasket 9, lower sleeve gasket 10 is also successively nested and fixed on 5 outer wall of inner connecting tube of 4 lower end of sealing ring,
Middle lower sleeve gasket 10 is located at 11 top of lower end cap.
One end of the upper sleeve gasket 9 is fixedly connected with sealing ring 4, and the other end and lower sleeve gasket 10 of upper sleeve gasket 9 are solid
Fixed connection, wherein upper sleeve gasket 9, lower sleeve gasket 10 and lower end cap 11 be respectively positioned on 5 outer wall of inner connecting tube and 8 inner wall of sand control shield it
Between.
In use, sealing ring 4 improves the sealing performance between speed column 1 and sand control shield 8, while under sealing ring 4
Upper sleeve gasket 9 successively fixed, lower sleeve gasket 10 on 2 outer wall of inner connecting tube at end, so that between inner connecting tube 5 and sand control shield 8
Flexible deformation is small, good seal performance, while upper sleeve gasket 9, lower sleeve gasket 10 are used separately, and are easily installed, sealed reliable, connection
Securely.
Embodiment 4
As shown in Figure 1, it is to improve on the basis of embodiment 1,13 lower end of guide head is pyramidal structure, taper knot
Structure is more conform with requirement of the aerodynamic structures to shape of product, and in water-producing gas well production process, air drag reduces, side
Just it uses.The air inlet has several, several air inlets are circumferential on the corresponding position of inner connecting tube 5 and sand control shield 8
It is evenly distributed.Lower end cap 11 is sealing state in normal condition, plays the role of insulating gas-bearing formation and speed column 1；Work as pin
After 12 cut, lower end cap 11 is struck off, the channel of gas-bearing formation admission velocity tubing string 1 is opened, and can normally produce.External sand control shield
Cover 8 plays the role of insulating gravel admission velocity tubing string 1, avoids thorn leakage pipeline valve, plays guarantee for gas well safety in production and make
With.When playing pipe operation, pressurize in well head pitching, shear pad 6 is cut under pressure, and top shoe 3 moves down, and works as bullet
Property sealing ring 2 it is locking after, upper plug head 7 is connect and locking with top shoe 3, realizes that second level blocks function, guarantees that speed column 1 is smooth
Act well head.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot manage
Solution is its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.
It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.The component that the present embodiment does not describe in detail
With the well-known components and common structure or conventional means of the structure category industry, do not describe one by one here.
Claims (10)
1. a kind of speed column two-stage plugging device, inner connecting tube (5) and sand control shield including being connected to speed column (1) lower end
(8), sand control shield (8) is sleeved and fixed on inner connecting tube (5) outer wall, and the lower part of inner connecting tube (5) is fixed with guide head (13), special
Sign is: the side wall that the inner connecting tube (5) is located at top is provided with air inlet, and the air inlet slide outside is connected with top shoe
(3), top shoe (3) is fixed by shear pad (6) and inner connecting tube (5), and the inner cavity of inner connecting tube (5) is successively fixed with from top to bottom
Upper plug head (7) and lower end cap (11), wherein lower end cap (11) is fixed by pin (12) and inner connecting tube (5), under lower end cap (11)
On inner connecting tube (5) side wall of side and the corresponding position of sand control shield (8) is provided with air inlet.
2. a kind of speed column two-stage plugging device according to claim 1, it is characterised in that: the upper plug head (7) is
Section is the structure of cheese head screw, and wherein one end of upper plug head (7) close top shoe (3) is the hemispherical dome structure of round end.
3. a kind of speed column two-stage plugging device according to claim 2, it is characterised in that: the top shoe (3) is
Both ends are the column structure of choana, wherein opening radius and upper plug head of the top shoe (3) close to upper plug head (7) one end
(7) the aperture matching of round end hemispherical dome structure.
4. a kind of speed column two-stage plugging device according to claim 3, it is characterised in that: the top shoe (3) is outside
It is provided with elastic seal ring (2) between wall and inner connecting tube (5) inner wall, elastic seal ring (2) is fixed on the outer wall of top shoe (3)
On.
5. a kind of speed column two-stage plugging device according to claim 1, it is characterised in that: the pin (12) is along interior
The diametrical direction of adapter tube (5) is detachably connected with inner connecting tube (5).
6. a kind of speed column two-stage plugging device according to claim 1, it is characterised in that: inner connecting tube (5) rolling
Pressure is connected to the bottom of speed column (1), and speed column (1) lower end surface passes through sealing ring (4) and sand control shield (8) upper surface
It is fixedly connected, wherein sealing ring (4) is sleeved and fixed on the outer wall of inner connecting tube (5).
7. a kind of speed column two-stage plugging device according to claim 6, it is characterised in that: the sealing ring (4)
Upper edge extends to speed column (1) inner wall and fixes with speed column (1), and the lower edge of sealing ring (4) extends to sand control shield (8)
Inner wall and fixed with sand control shield (8).
8. a kind of speed column two-stage plugging device according to claim 6 or 7, it is characterised in that: the sealing ring (4)
Upper sleeve gasket (9), lower sleeve gasket (10) is also successively nested and fixed on inner connecting tube (5) outer wall of lower end, wherein lower sleeve gasket
(10) it is located at lower end cap (11) top.
9. a kind of speed column two-stage plugging device according to claim 8, it is characterised in that: the upper sleeve gasket (9)
One end be fixedly connected with sealing ring (4), the other end of upper sleeve gasket (9) is fixedly connected with lower sleeve gasket (10), wherein upper close
Big envelope (9), lower sleeve gasket (10) and lower end cap (11) are respectively positioned between inner connecting tube (5) outer wall and sand control shield (8) inner wall.
10. a kind of speed column two-stage plugging device according to claim 1, it is characterised in that: the guide head (13)
Lower end is pyramidal structure, and the air inlet has several, several air inlets are along inner connecting tube (5) and pair of sand control shield (8)
It answers circumferential evenly distributed on position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769224.9U CN209195367U (en) | 2018-10-30 | 2018-10-30 | A kind of speed column two-stage plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769224.9U CN209195367U (en) | 2018-10-30 | 2018-10-30 | A kind of speed column two-stage plugging device |
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| Publication Number | Publication Date |
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| CN209195367U true CN209195367U (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821769224.9U Active CN209195367U (en) | 2018-10-30 | 2018-10-30 | A kind of speed column two-stage plugging device |
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| CN (1) | CN209195367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of speed column two-stage plugging device and application method |
-
2018
- 2018-10-30 CN CN201821769224.9U patent/CN209195367U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267972A (en) * | 2018-10-30 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of speed column two-stage plugging device and application method |
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