CN206554873U - Two-tube cock device - Google Patents
Two-tube cock device Download PDFInfo
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- CN206554873U CN206554873U CN201621379871.XU CN201621379871U CN206554873U CN 206554873 U CN206554873 U CN 206554873U CN 201621379871 U CN201621379871 U CN 201621379871U CN 206554873 U CN206554873 U CN 206554873U
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- tube
- cock
- inner tube
- valve
- cock device
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Abstract
The utility model provides a kind of two-tube cock device.This two-tube cock device, including：Outer tube and inner tube, said inner tube are sheathed in the outer tube, and annular space is formed between the outer tube and said inner tube；Said inner tube includes plug valve, and the plug valve is connected in said inner tube.The two-tube cock device that the utility model is provided can fast and effeciently block the oil gas altered in Oil/gas Well cleaning process, prevent the generation of spray accident in Oil/gas Well.
Description
Technical field
The utility model is related to Oil/gas Well technology, more particularly to a kind of two-tube cock device.
Background technology
Landwaste silt particle of the Oil/gas Well when carrying out production of hydrocarbons in oil-gas Layer can be carried over stratum, enter in pit shaft.With
Production of hydrocarbons constantly to carry out, oil gas constantly can earthward migrate, the sand grains that stratum enters in pit shaft can be by production of hydrocarbons pipe
The slot pipe of post bottom is blocked and filtered.Tiny silt particle can pass through slot pipe as oil gas is carried over ground, and be kept off by slot pipe
Big grain silt particle firmly will be deposited on lower wellbore.As production of hydrocarbons is carried out incessantly, the big grain silt particle of underground accumulation becomes
It is many, so that the oil gas circulation road of slot pipe can be blocked, cause oil and gas production to tail off, now will carry out well-flushing, sand removal with nitrogen
Operation, removes the big grain silt particle for being deposited on underground, because nitrogen proportion is very low, the ability of equilibrium strata pressure is weak so that well
Altered on interior natural gas is easy, occur well control dangerous situation.
Carry out being not provided with special interior jet-preventing tool in well-flushing, the tubing string of sand removal at present, if in operation process occurring
Well control dangerous situation, the harm for the person, equipment and Oil/gas Well is all huge.
Utility model content
The utility model provides a kind of two-tube cock device, to solve to clean asking of occurring to alter on oil gas during Oil/gas Well
Topic.
The utility model provides a kind of two-tube cock device, including：
Outer tube and inner tube, said inner tube are sheathed in the outer tube, and annular space is formed between the outer tube and said inner tube；
Said inner tube includes plug valve, and the plug valve is connected in said inner tube.
Alternatively, the plug valve includes valve element and cock valve seat and lower valve base for fixing the valve element, described
Valve element is connected by the cock valve seat and the lower valve base with said inner tube inwall.
Alternatively, the valve element is ball valve core.
Alternatively, it is provided with axially extending bore on the valve element.
Alternatively, the two-tube cock device also include fixed mount, the fixed mount setting the outer tube with it is described interior
Between pipe, said inner tube is placed on by the fixation on the inwall of the outer tube.
Alternatively, the two-tube cock device also includes switch turn-knob, and the switch turn-knob sequentially passes through the outer tube, institute
State after annular space and said inner tube and to be fixedly connected with the plug valve.
Alternatively, the quantity of the switch turn-knob is two, and two switch turn-knobs are symmetricly set in the ball valve core
Both sides.
Alternatively, the outer tube includes cock top connection and cock lower contact, the cock top connection and cock lower contact
Connection.
Optionally, cock top connection and cock the lower contact threaded connection.
The two-tube cock device that the utility model is provided, by setting the outer tube and institute in the two-tube cock device
Inner tube is stated, said inner tube is sheathed in the outer tube, annular space is formed between the outer tube and said inner tube, said inner tube includes rotation
Plug valve, the plug valve is connected in said inner tube.The plug valve is used for flammable explosive gas during closed well washing sand removal
On alter passage, solve the problem of being altered on flammable explosive gas during well-flushing sand removal, it is therefore prevented that the generation of blowout phenomenon, protect
The personal safety of staff is demonstrate,proved.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation for the two-tube cock device that the utility model embodiment one is provided；
Fig. 2 is the structural representation for the two-tube cock device that the utility model embodiment two is provided；
Fig. 3 is the structural representation for the two-tube cock device that the utility model embodiment three is provided；
The structural representation for the two-tube cock device that Fig. 4 provides for the utility model example IV；
Fig. 5 is the structural representation for the two-tube cock device that the utility model embodiment five is provided；
A kind of top view for the two-tube cock device that Fig. 6 implements to provide for the utility model；
Fig. 7 is the structural representation for the two-tube cock device that the utility model embodiment six is provided.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Fig. 1 is the structural representation for the two-tube cock device that the utility model embodiment one is provided, as shown in figure 1, described
Two-tube cock device includes：
Outer tube 10 and inner tube 20, said inner tube 20 are sheathed in the outer tube 10, the outer tube 10 and said inner tube 20 it
Between formed annular space 40；
Said inner tube 20 includes plug valve 30, and the plug valve 30 is connected in said inner tube 20.
Wherein, the outer tube 10 is connected by its internal thread with the drilling rod in Oil/gas Well, and said inner tube 20 is sheathed on institute
State in outer tube 10, annular space 40 is formed between the outer tube 10.The annular space 40 can fill in the two-tube cock device work
Enter nitrogen to clean the silt particle accumulated during Oil/gas Well in the wellbore.Said inner tube 20 is communicated with the oil and gas path of Oil/gas Well,
During gathering oil gas, the silt particle of big grain can gradually be deposited in underground with the collection of oil gas, with the accumulation of big grain silt particle,
So that choking phenomenon occurs in fairway, the oil and gas content now gathered from said inner tube 20 will be reduced.
Wherein, said inner tube 20 includes plug valve 30, and the plug valve 30 is connected among inner tube 20.In said inner tube 20
When producing blocking with the accumulation of the big grain silt particle in underground, to ensure that oil gas can be passed through, it is necessary to oil in said inner tube 20
Gas well is cleaned, and is now accomplished by carrying out the operation of well-flushing and sand removal to being filled with nitrogen in the annular space 40, although nitrogen
Good fluidity, be conducive to the cleaning of Oil/gas Well, but the proportion of nitrogen is very low, the ability of equilibrium strata pressure is weak, clear in well-flushing
During sand, being filled with for nitrogen will be so that the natural gas in well, which is easily produced, alters phenomenon, after natural gas is carried over outside well
Can occur explosion phenomenon.The plug valve 30 that is connected with said inner tube 20 is set, can be with while guarantee well-flushing sand removal
Prevent from altering caused blast on natural gas.
The two-tube cock device that the utility model embodiment is provided, it is described outer by being set in the two-tube cock device
Pipe 10 and said inner tube 20, said inner tube 20 are sheathed in the outer tube 10, are formed between the outer tube 10 and said inner tube 20
Annular space 40, said inner tube 20 includes plug valve 30, and the plug valve 30 is connected in said inner tube 20.The plug valve 30 is used for
During closed well washing sand removal flammable explosive gas on alter passage, solve and altered on flammable explosive gas during well-flushing sand removal
The problem of, it is therefore prevented that the generation of blowout phenomenon, it is ensured that the personal safety of staff.
Fig. 2 is the structural representation for the two-tube cock device that the utility model embodiment two is provided, as shown in Fig. 2 Fig. 2 is
Shown on the basis of the structure shown in Fig. 1, alternatively, the outer tube 10 includes cock top connection 11 and cock lower contact 12,
The cock top connection 11 is connected with cock lower contact 12；The cock top connection 11 and cock lower contact 12 are threadedly coupled.
Wherein, the outer tube 10 includes the cock top connection 11 and the cock lower contact 12, and the outer tube 10 passes through
Lower contact two parts in cock are set to, dismounting of the plug valve 30 on the outer tube 10 is more facilitated.
The outer tube 10 includes the cock top connection 11 and the cock lower contact 12, the cock top connection 11 and institute
State cock lower contact 12 to be attached by screw thread, threaded connection is more convenient for the dismounting of upper lower contact, and threaded connection is reliable
Property is higher.
In the present embodiment, the setting to the upper lower contact of outer tube progress is passed through so that the plug valve is easier to peace
On the outer tube, meanwhile, lower contact is connected through a screw thread in the cock of the outer tube, the dismounting for the outer tube of being more convenient for.
Fig. 3 is the structural representation for the two-tube cock device that the utility model embodiment three is provided, as shown in figure 3, Fig. 3 is
Shown on the basis of structure shown in Fig. 2, alternatively, the two-tube cock device also includes fixed mount 50, the fixed mount
50 are arranged between the outer tube 10 and said inner tube 20, and said inner tube 20 is placed in the outer tube 10 by the fixed mount 50
On inwall.
Wherein, the fixed mount 50 is closely attached on the inwall setting of the outer tube 10, and the fixed mount 50 is set up in the ring
In sky 40, the fixed mount 50 is arranged at the recess on the inwall of outer tube 10 so that the fixed mount 50 can be connected in
On the inwall of the outer tube 10, said inner tube 20 is attached by the fixed mount 50 with the outer tube 10 so that in described
Pipe 20 can partly be connected with the outer tube 10, to reach the connection between said inner tube 20 and the outer tube 10, play fixation
The effect of said inner tube 20.
In the present embodiment, by setting fixed mount in the two-tube cock device so that said inner tube and described outer
Pipe can be attached by the fixed mount, solve the fixation problem of said inner tube.
The structural representation for the two-tube cock device that Fig. 4 provides for the utility model example IV, as shown in figure 4, Fig. 4 is
Shown on the basis of Fig. 3 structures, alternatively, the plug valve 30 includes valve element 31 and for fixing the valve element 31
Cock valve seat 32 and lower valve base 33, the valve element 31 pass through in the cock valve seat 32 and the lower valve base 33 and said inner tube 20
Wall is connected.
Wherein, the cock valve seat 32 and the lower valve base 33 are closely attached on the inwall of said inner tube 20, said inner tube 20
It is depression setting at the plug valve 30, the plug valve 30 is arranged at the recess of the inwall of said inner tube 20, the rotation
Plug valve seat 32 is closely attached on the upper end of the recess of said inner tube 20, and the lower valve base 33 is closely attached under the recess of said inner tube 20
The valve element 31 of the plug valve, the inwall of said inner tube 20 is fixed on by the cock valve seat 32 and the lower valve base 33 by end
On so that the plug valve 30 is difficult displacement in the course of the work.
In the present embodiment, the plug valve is provided with valve element, and institute is set by the upper end of the valve element in the plug valve
State cock valve seat, described lower valve base be set in the lower end of the valve element of the plug valve, by the cock valve seat and it is described under
The plug valve is fixed on the inwall of said inner tube by valve seat so that the plug valve is difficult displacement during work.
Fig. 5 is the structural representation for the two-tube cock device that the utility model embodiment five is provided, as shown in figure 5, Fig. 5 is
Shown on the basis of Fig. 4 structures, alternatively, in addition to：Turn-knob 60 is switched, the switch turn-knob 60 sequentially passes through the outer tube
10th, it is fixedly connected after the annular space 40 and said inner tube 20 with the plug valve 30.
Wherein, the switch turn-knob 60 is separately positioned on the both sides of the plug valve 30, and with the valve of the plug valve 30
Core is fixedly connected, and the switch turn-knob 60 sequentially passes through the tube wall, the annular space 40, the pipe of said inner tube 20 of the outer tube 10
Wall.The switch turn-knob 60 can be used for the valve element for rotating the plug valve 30, may be such that the valve element along the switch turn-knob
60 axial direction is rotated.
Alternatively, the quantity of the switch turn-knob 60 can be two, and two switch turn-knobs 60 are symmetrical arranged and institute
State the valve element both sides of plug valve 30.The symmetrical structure of the switch turn-knob 60 so that the valve element reasonable stress of the plug valve 30,
Be not in because the switch stress of turn-knob 60 is excessive to cause the switch turn-knob 60 to be broken in the course of work.
Alternatively, the switch turn-knob 60 can be operated by special spanner, with special spanner rotary switch turn-knob,
It is convenient and easily operated.
In the present embodiment, by setting the switch turn-knob in the two-tube cock device, revolved by the switch
Turning round can make it that the valve element of the plug valve is rotated along the axial direction for switching turn-knob, to reach that the valve element works
When need reach position, solve the Rotation of the valve element of the plug valve.
A kind of top view for the two-tube cock device that Fig. 6 provides for the utility model embodiment, as shown in fig. 6, alternatively,
The valve element 31 of the plug valve 30 is to be provided with axially extending bore 34 on ball valve core, the valve element 31.
Wherein, the valve element 31 of the plug valve 30 is ball valve core, and ball valve cored structure is simple, it is easy to operate, and reliable operation
Property is strong.
Axially extending bore 34 is provided with the valve element 31, the axially extending bore 34 can be for circulation oil gas, in collection oil
During gas, the direction of the axially extending bore 34 is maintained on the axial direction of said inner tube so that oil gas can enter from said inner tube
Row collection.During well-flushing sand removal, when there is inflammable and explosive gas to spray, the axially extending bore 34 by with the plug valve
The switch turn-knob of 30 connections rotates 90 ° so that axial direction of the direction of the axially extending bore 34 perpendicular to said inner tube so that
The valve element 31 of the plug valve 30 can close the passage of said inner tube, and inflammable and explosive oil gas will not be overflow by said inner tube 20
Go out onto well, fluid passage is truncated, can effectively prevent inflammable and explosive oil gas from gushing upwards.
In the present embodiment, it is ball valve core by the valve element from the plug valve, the ball valve core is provided with axially logical
Hole, solves circulation and closed question of the plug valve to oil gas, conveniently realizes the worked of the plug valve
Journey, during well-flushing sand removal, effectively prevent the generation of blowout phenomenon.
Fig. 7 is the structural representation for the two-tube cock device that the utility model embodiment six is provided, as shown in fig. 7, Fig. 7 is
Shown on the basis of the arbitrary structures shown in Fig. 1-Fig. 6.
The valve element 31 of the two-tube cock device can carry out rotation vertically, in the axially extending bore 34 of the valve element 31
Direction it is parallel with the axial direction of said inner tube 20 when, the valve element be in open mode, oil and gas gathering can be carried out, described
When the direction of the axially extending bore 34 of valve element 31 is vertical with the axial direction of said inner tube 20, as shown in fig. 7, the valve element 31 is in
Closed mode, can close gas channel.
During well-flushing sand removal is carried out, by being provided with the two-tube cock device in gas channel, to described
The valve element of plug valve is rotated, and can reach the folding of the gas channel, realize circulation of the oil gas in gas channel with
Closing.When occurring gas blowout accident, the gas channel of said inner tube can be timely blocked by the two-tube cock device so that
Inflammable and explosive oil gas can be closed in well, it is therefore prevented that the generation of gas blowout accident, it is ensured that the personal safety of staff.
The lower section of the two-tube cock device of the utility model embodiment can be connected with two-tube annular space float valve.Annular space during work
Inside it is filled with nitrogen to rinse silt particle, annular space bottom is connected with inner tube fairway, the gas fluidity of nitrogen is very good, in height
Sand removal ability is strong under flow velocity.But nitrogen proportion is very low, equilibrium strata pressure ability is weak, alters on the natural gas in well is easy, easily
The explosive natural gas of combustion during upper alter as control it is bad if easily cause blowout and the accident such as out of control.Therefore, it is logical in oil gas
Two-tube cock device is provided with road；Two-tube annular space float valve is closed and blocks annular space automatically when such as occurring blowout, two-tube cock dress
Put and block inner tube gas channel, prevent the interior spray accident of Oil/gas Well.
Finally it should be noted that：Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of two-tube cock device, it is characterised in that including：
Outer tube and inner tube, said inner tube are sheathed in the outer tube, and annular space is formed between the outer tube and said inner tube；
Said inner tube includes plug valve, and the plug valve is connected in said inner tube.
2. two-tube cock device according to claim 1, it is characterised in that the plug valve includes valve element and for solid
The cock valve seat and lower valve base of the fixed valve element, the valve element pass through in the cock valve seat and the lower valve base and said inner tube
Wall is connected.
3. two-tube cock device according to claim 2, it is characterised in that the valve element is ball valve core.
4. two-tube cock device according to claim 2, it is characterised in that be provided with axially extending bore on the valve element.
5. two-tube cock device according to claim 1, it is characterised in that the two-tube cock device also includes fixing
Frame, the fixed mount setting is between the outer tube and said inner tube, and said inner tube is placed on the outer tube by the fixation
Inwall on.
6. two-tube cock device according to claim 3, it is characterised in that the two-tube cock device also includes switch rotation
Turn round, the switch turn-knob is fixedly connected after sequentially passing through the outer tube, the annular space and said inner tube with the plug valve.
7. two-tube cock device according to claim 6, it is characterised in that the quantity of the switch turn-knob is two, two
The individual switch turn-knob is symmetricly set in the ball valve core both sides.
8. the two-tube cock device according to claim 1-7 any one, it is characterised in that the outer tube is included in cock
Joint and cock lower contact, the cock top connection are connected with cock lower contact.
9. two-tube cock device according to claim 8, it is characterised in that cock top connection and cock the lower contact spiral shell
Line is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379871.XU CN206554873U (en) | 2016-12-15 | 2016-12-15 | Two-tube cock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379871.XU CN206554873U (en) | 2016-12-15 | 2016-12-15 | Two-tube cock device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554873U true CN206554873U (en) | 2017-10-13 |
Family
ID=60358012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621379871.XU Active CN206554873U (en) | 2016-12-15 | 2016-12-15 | Two-tube cock device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206554873U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222883A (en) * | 2016-12-15 | 2018-06-29 | 中国石油天然气股份有限公司 | Two-tube cock device |
-
2016
- 2016-12-15 CN CN201621379871.XU patent/CN206554873U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222883A (en) * | 2016-12-15 | 2018-06-29 | 中国石油天然气股份有限公司 | Two-tube cock device |
| CN108222883B (en) * | 2016-12-15 | 2024-05-28 | 中国石油天然气股份有限公司 | Double-pipe cock device |
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