CN107558961B - A kind of underground throttle device - Google Patents
A kind of underground throttle device Download PDFInfo
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- CN107558961B CN107558961B CN201610511843.7A CN201610511843A CN107558961B CN 107558961 B CN107558961 B CN 107558961B CN 201610511843 A CN201610511843 A CN 201610511843A CN 107558961 B CN107558961 B CN 107558961B
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- flow controller
- closing piece
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Abstract
The invention discloses a kind of underground throttle devices, belong to production gas technology field.The flow controller includes dual-grip flow controller seating nipple and gas nozzle throw in catcher, and the dual-grip flow controller seating nipple is located at the lower section of gas nozzle throw in catcher；The dual-grip flow controller seating nipple includes seating nipple ontology, connector sleeve and the first salvaging sealing shroud；The gas nozzle throw in catcher includes gas nozzle fixing sleeve, gas nozzle, sealing grafting set, closing piece, closing piece fixing sleeve and shear pin.In the present invention, when needing to replace gas nozzle, it may lift up gas nozzle throw in catcher and cut shear pin, make to seal the connection between grafting set and closing piece fixing sleeve to disconnect, being connected to during surface personnel above mentions gas nozzle throw in catcher between closing piece and the first salvaging sealing shroud disconnects, so as to which the gas nozzle throw in catcher is pulled out from underground, carry out the replacement of gas nozzle, when avoiding with steel wire salvaging flow controller, steel wire is easy the problem of being pulled off, and improves the service life of flow controller and the efficiency with mouth of taking a breath.
Description
Technical field
The present invention relates to production gas technology field, in particular to a kind of underground throttle device.
Background technique
Downhole Choking Technology is that underground throttle device is mounted on to appropriate location in gas well, be may be implemented in the pit shaft of gas well
Reducing pressure by regulating flow, while can use the cryogenic natural gas after the throttling of stratum energy heats, and reduce the gas pressure after throttling
The purpose of gas well liquid loading is improved so that reaching prevents from forming Hydrate Plugging with hydrate production temperature.But due to natural
After gas individual well is gone into operation the decline of bottom energy quickly, the effect that stratum thermal energy heats the cryogenic natural gas after throttling can under
Drop, so as to cause the decline of day hot gas yield, therefore, it is necessary in time come out flow controller from underground fishing, and to the gas of flow controller
Mouth is replaced, to adjust the utilization to stratum energy, improves gas production.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
Due to usually having a large amount of hydrops on flow controller, be difficult to when being salvaged with steel wire to the flow controller by flow controller from
Underground deblocking leads to the gas nozzle failure for replacing flow controller to easily cause steel wire fracture.
Summary of the invention
In order to solve problems in the prior art, the embodiment of the invention provides a kind of underground throttle devices.The technical solution
It is as follows:
On the one hand, a kind of flow controller is provided, the flow controller includes dual-grip flow controller seating nipple and gas nozzle throw in catcher,
The dual-grip flow controller seating nipple is located at the lower section of gas nozzle throw in catcher；
The dual-grip flow controller seating nipple includes seating nipple ontology, connector sleeve and the first salvaging sealing shroud；
The first salvaging sealing shroud is socketed in the seating nipple outer body close to the position of the gas nozzle throw in catcher, institute
It states connector sleeve and is socketed in the described first lower section for salvaging sealing shroud, and described first salvages sealing shroud close to the gas nozzle throw in catcher
Inside be provided with inside groove；
The gas nozzle throw in catcher includes gas nozzle fixing sleeve, gas nozzle, sealing grafting set, closing piece, closing piece fixing sleeve and shear pin；
The gas nozzle is socketed in the upper end of the gas nozzle fixing sleeve, the outside socket of the gas nozzle fixing sleeve and the gas nozzle
There is the sealing grafting set, the sealing grafting, which is covered, is located at described first close to the position of the gas nozzle fixing sleeve and the gas nozzle
It salvages the inside of sealing shroud and gap is not present, exist between the sealing grafting set and the inside groove of the first salvaging sealing shroud
Gap；
The closing piece fixing sleeve is fixed by the outside that the shear pin is socketed in the sealing grafting set far from the gas nozzle
The position of set and the gas nozzle, and the closing piece fixing sleeve is located at the described first top for salvaging sealing shroud；
The closing piece is arranged in the gap between the sealing grafting set and the inside groove of the first salvaging sealing shroud, and
The closing piece is located at the bottom of the closing piece fixing sleeve, and the closing piece is provided with convex close to the side of the first salvaging sealing shroud
Rise, with when the sealing grafting set moves down, by the sealing grafting cover with the closing piece fixing sleeve, by the convex of the closing piece
It rises and is locked in the inside groove that described first salvages sealing shroud, and when the shear pin is cut, pass through sealing grafting set and institute
Closing piece fixing sleeve is stated, the protrusion of the closing piece is unlocked from the inside groove of the first salvaging sealing shroud, to salvage the gas nozzle
Throw in catcher.
Optionally, the dual-grip flow controller seating nipple further includes the first sealing ring；
First sealing ring is located at the link position between the connector sleeve and the first salvaging sealing shroud, will
The connector sleeve is connected and sealed with the first salvaging sealing shroud.
Optionally, the gas nozzle throw in catcher further includes the second sealing ring；
Second sealing ring, which is located between the sealing grafting set and the first salvaging sealing shroud, is not present gap
At position, by it is described sealing grafting set it is described first salvage sealing shroud between there is no the positions in gap to be sealed.
Optionally, the gas nozzle throw in catcher further includes lock ring, the second salvaging sealing shroud and releasing tool；
The lock ring is socketed in the sealing grafting and covers the position far from the gas nozzle fixing sleeve and the gas nozzle, described to lose
Hand-held tool is socketed in the top of the sealing grafting set, and the second salvaging sealing shroud is socketed in the lock ring and the work of giving up
The outside of tool, the second salvaging sealing shroud are located at the top of the closing piece fixing sleeve.
Optionally, the gas nozzle throw in catcher further includes third sealing ring；
The third sealing ring is located at the link position that described second salvages between sealing shroud and the closing piece fixing sleeve,
The second salvaging sealing shroud to be connected and sealed with the closing piece fixing sleeve.
Optionally, the releasing tool includes elastic release piece, releasing-joint sealing ring and releasing-joint；Correspondingly, institute
The upper end for stating sealing grafting set is provided with annular groove；
The top of the sealing grafting set is arranged in the releasing-joint, and the elasticity release piece setting connects in the release
The position of the nearly sealing grafting set of head rest, and when launching the gas nozzle throw in catcher, the elasticity release piece is embedded in described
In the annular groove for sealing grafting set upper side；
The releasing-joint sealing ring is located at the link position between the elastic release piece and the releasing-joint, with right
Connecting portion between the elasticity release piece and the releasing-joint is sealed.
Optionally, the dual-grip flow controller seating nipple further includes at least one lower slips, at least one packing element and at least
One upper slips；
At least one described lower slips, at least one described packing element and at least one described upper slips are socketed in the work
Make the outside of cylinder ontology, and at least one described packing element is located at the top of at least one lower slips, it is described at least one
Slips is located at the top of at least one packing element.
Technical solution provided in an embodiment of the present invention has the benefit that in embodiments of the present invention, the flow controller
Including dual-grip flow controller seating nipple and gas nozzle throw in catcher, when needing to replace gas nozzle, can be mentioned by jarring or above
The modes such as fisher cut shear pin, and after shear pin is cut, the connection between the sealing grafting set and closing piece fixing sleeve is disconnected, should
The protrusion of closing piece is unlocked from the inside groove of the first salvaging sealing shroud, that is to say, the company between the closing piece and the first salvaging sealing shroud
It connects and is disconnected during surface personnel above mentions gas nozzle throw in catcher, so as to which the gas nozzle throw in catcher is pulled out from underground,
The replacement of gas nozzle is carried out, when avoiding with steel wire salvaging flow controller, steel wire is easy the problem of being pulled off.Simultaneously as ground work
Can easily the gas nozzle throw in catcher be salvaged by making personnel, thus when ensure that progress gas nozzle replacement, wire Launching and Bailing
Number improves the service life of flow controller and replaces the efficiency of gas nozzle.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Figure 1A is the structural schematic diagram of the first flow controller provided in an embodiment of the present invention；
Figure 1B is a kind of original state schematic diagram of gas nozzle throw in catcher underground provided in an embodiment of the present invention；
Fig. 1 C is the structural schematic diagram of second of flow controller provided in an embodiment of the present invention；
Fig. 1 D is the structural schematic diagram of the third flow controller provided in an embodiment of the present invention；
A kind of gas nozzle throw in catcher provided in an embodiment of the present invention is in status diagram of giving up when Fig. 1 E；
Fig. 1 F is a kind of structural schematic diagram of dual-grip flow controller seating nipple provided in an embodiment of the present invention.
Appended drawing reference:
1: dual-grip flow controller seating nipple, 2: gas nozzle throw in catcher；
11: seating nipple ontology, 12: connector sleeve, 13: the first salvaging sealing shrouds, 14: the first sealing rings, 15: under at least one
Slips, 16: at least one packing element, 17: at least one upper slips；
21: gas nozzle fixing sleeve, 22: gas nozzle, 23: sealing grafting set, 24: closing piece, 25: closing piece fixing sleeve, 26: shear pin, 27:
Second sealing ring, 28: lock ring, 29: the second salvaging sealing shrouds, 210: releasing tool, 211: third sealing ring；
2101: elastic release piece, 2102: releasing-joint sealing ring, 2103: releasing-joint.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Figure 1A is a kind of structural schematic diagram of flow controller provided in an embodiment of the present invention, and referring to Figure 1A, which includes
Dual-grip flow controller seating nipple 1 and gas nozzle throw in catcher 2, dual-grip flow controller seating nipple 1 are located at the lower section of gas nozzle throw in catcher 2；
Dual-grip flow controller seating nipple 1 includes seating nipple ontology 11, connector sleeve 12 and the first salvaging sealing shroud 13；First dozen
Fishing sealing shroud 13 is socketed in 11 outside of seating nipple ontology close to the position of gas nozzle throw in catcher 2, and connector sleeve 12 is socketed in the first salvaging
The lower section of sealing shroud 13, and the first salvaging sealing shroud 13 is provided with inside groove close to the inside of gas nozzle throw in catcher 2；Gas nozzle throw in catcher 2
Including gas nozzle fixing sleeve 21, gas nozzle 22, sealing grafting set 23, closing piece 24, closing piece fixing sleeve 25 and shear pin 26；Gas nozzle 22 is socketed in
The outside of the upper end of gas nozzle fixing sleeve 21, gas nozzle fixing sleeve 21 and gas nozzle 22 is socketed with sealing grafting set 23, sealing grafting set 23
It is located at the inside of the first salvaging sealing shroud 13 close to the position of gas nozzle fixing sleeve 21 and gas nozzle 22 and gap is not present, seals grafting
There are gaps between set 23 and the inside groove of the first salvaging sealing shroud 13；Closing piece fixing sleeve 25 is socketed in sealing grafting by shear pin 26
Position of the outside far from gas nozzle fixing sleeve 21 and gas nozzle 22 of set 23, and closing piece fixing sleeve 25 is located at first and salvages sealing shroud 13
Top；Closing piece 24 is arranged in the gap between sealing grafting set 23 and the inside groove of the first salvaging sealing shroud 13, and closing piece 24
In the bottom of closing piece fixing sleeve 25, closing piece 24 is provided with protrusion close to the side of the first salvaging sealing shroud 13, in sealing grafting
When set 23 moves down, by sealing grafting set 23 and closing piece fixing sleeve 25, the protrusion of closing piece 24 is locked in the first salvaging sealing shroud
In 13 inside groove, and when shear pin 26 is cut, by sealing grafting set 23 and closing piece fixing sleeve 25, by the protrusion of closing piece 24 from the
It is unlocked in the inside groove of one salvaging sealing shroud 13, to salvage gas nozzle throw in catcher 2.
Since the gas nozzle 22 is socketed in the upper end of gas nozzle fixing sleeve 21, the outside of gas nozzle fixing sleeve 21 and gas nozzle 22 is socketed with
Grafting set 23 is sealed, sealing grafting set 23 is located at first close to the position of gas nozzle fixing sleeve 21 and gas nozzle 22 and salvages sealing shroud 13
Internal and gap is not present, closing piece fixing sleeve 25 is socketed in the outside of sealing grafting set 23 far from gas nozzle fixing sleeve by shear pin 26
21 and gas nozzle 22 position, and closing piece fixing sleeve 25 be located at first salvage sealing shroud 13 top；The setting of closing piece 24 is inserted in sealing
In gap between female connector 23 and the inside groove of the first salvaging sealing shroud 13；The first salvaging sealing shroud 13 is socketed in seating nipple ontology
11 outsides are close to the position of gas nozzle throw in catcher 2, and connector sleeve 12 is socketed in the lower section of the first salvaging sealing shroud 13, and the first salvaging is close
Big envelope 13 is provided with inside groove close to the inside of gas nozzle throw in catcher 2, therefore, beats when surface personnel carries out gas nozzle 22 by steel wire
When fishing, shear pin 26 can be cut, disconnects the connection sealed between grafting set 23 and closing piece fixing sleeve 25, and is thrown in the upper gas nozzle that mentions
When fishing out device 2, closing piece fixing sleeve 25 and sealing grafting set 23 can be moved up, so that the protrusion of the closing piece 24 be made to salvage sealing from first
It is unlocked in the inside groove of set 13, to salvage outlet nozzle throw in catcher.Surface personnel can in gas nozzle throw in catcher gas nozzle or
Person's other component is replaced, and the gas nozzle throw in catcher after replacement is put into gas well again, is completed the replacement to gas nozzle, is kept away
Exempt from the problem of steel wire fracture occurs during salvaging gas nozzle throw in catcher, improves the efficiency of replacement gas nozzle.
Wherein, after dual-grip flow controller seating nipple and gas nozzle throw in catcher are sequentially placed into gas well by surface personnel,
It is original state of the gas nozzle throw in catcher in underground referring to Figure 1B, Figure 1B, is deposited between sealing grafting set and the first salvaging sealing shroud
It include a groove in the position in gap, which is located in the groove of sealing grafting set 23, throws when surface personnel utilizes
It puts tool weighted lever and bumper jar, when downward jarring gas nozzle throw in catcher, sealing grafting set 23 can be pushed to move down, simultaneously
Sealing grafting set 23 can push closing piece 24 to move from inside to outside from groove, so that the protrusion of the closing piece 24 can be locked in first
In the inside groove for salvaging sealing shroud 13, realizes the locking of gas nozzle throw in catcher and dual-grip throttling seating nipple, complete the replacement to gas nozzle.
It should be noted that closing piece fixing sleeve 25 is preferably solid in order to when sealing shroud 13 is salvaged in the locking of closing piece 24 first
Lock block 24, the closing piece 24 are connected at position with closing piece fixing sleeve 25, and it is solid that the radial maximal side of closing piece 24 should be greater than closing piece
Surely the radial maximal side of 25 inner groovies is covered.
In addition, in embodiments of the present invention, can by delivery tool and bumper jar, downward jarring gas nozzle throw in catcher,
Jarring can certainly be carried out by other tools or mode, the embodiment of the present invention is not specifically limited in this embodiment.
Referring to Figure 1A, dual-grip flow controller seating nipple 1 further includes the first sealing ring 14；
First sealing ring 14 is located at the link position between connector sleeve 12 and the first salvaging sealing shroud 13, by connector sleeve
12 are connected and sealed with the first salvaging sealing shroud 13.
It should be noted that the first sealing ring 14 has sealing function, and first sealing ring 14 can not only make first
The connection salvaged between sealing shroud 13 and connector sleeve 12 is even closer, while gas being prevented to leak from flow controller, thus
Increase the throttling yield of flow controller.
Referring to Figure 1A, gas nozzle throw in catcher 2 further includes the second sealing ring 27；
Second sealing ring 27, which is located between sealing grafting set 23 and the first salvaging sealing shroud 13, to be not present at the position in gap,
With by seal grafting set 23 and first salvage sealing shroud 13 between there is no the positions in gap to be sealed.
It should be noted that the second sealing ring 27 has sealing function, and second sealing ring 27 can not only make to seal
Connection between grafting set 23 and the first salvaging sealing shroud 13 is even closer, while gas being prevented to leak from flow controller,
To increase the throttling yield of flow controller.
Referring to Fig. 1 C, gas nozzle throw in catcher 2 further includes that lock ring 28, second salvages sealing shroud 29 and releasing tool 210；
Lock ring 28, which is socketed in, seals 23 positions far from gas nozzle fixing sleeve 21 and gas nozzle 22 of grafting set, and 210 sets of releasing tool
It connecing on the top of sealing grafting set 23, the second salvaging sealing shroud 29 is socketed in the outside of lock ring 28 and releasing tool 210, and second dozen
Fishing sealing shroud 29 is located at the top of closing piece fixing sleeve 25.
Wherein, after sealing shroud 13 are salvaged in the locking of closing piece 24 first, since to be socketed in sealing grafting set 23 separate for lock ring 28
The position of gas nozzle fixing sleeve 21 and gas nozzle 22, therefore, lock ring 28 the sealing grafting set can be fixed, to prevent from sealing
Grafting set moves up, the connection that ensure that between closing piece 24 and the first salvaging sealing shroud further.
Since releasing tool 210 is socketed in the top of sealing grafting set 23, when the downward jarring gas of surface personnel
It, can be with the jarring releasing tool 210, so that sealing grafting set 23 is carried out downwards jarring when mouth throw in catcher 2.
In addition, the second salvaging sealing shroud 29 and closing piece fixing sleeve 25 can be by screwed connections, and second salvaging seals
Set 29 is located at the top of closing piece fixing sleeve 25.
It should be noted that can be by screwed connection, certainly between the second salvaging sealing shroud 29 and closing piece fixing sleeve 25
It can also be attached by other means, the embodiment of the present invention is not specifically limited in this embodiment.
Referring to Fig. 1 C, gas nozzle throw in catcher 2 further includes third sealing ring 211；
Third sealing ring 211 is located at the link position that second salvages between sealing shroud 29 and closing piece fixing sleeve 25, will
Second salvaging sealing shroud 29 is connected and sealed with closing piece fixing sleeve 25.
It should be noted that third sealing ring 211 equally plays sealing, it can not only make the second salvaging sealing shroud 29
Connection between closing piece fixing sleeve 25 is more close, while gas being prevented to leak from flow controller, to increase
The throttling yield of flow controller.
Referring to Fig. 1 D, releasing tool 210 includes elastic release piece 2101, releasing-joint sealing ring 2102 and releasing-joint
2103；Correspondingly, the upper end of sealing grafting set 23 is provided with annular groove；
The top of sealing grafting set 23 is arranged in releasing-joint 2103, and elastic release piece 2101 is arranged in releasing-joint 2103
Close to the position of sealing grafting set 23, and when launching gas nozzle throw in catcher 2, elastic release piece 2101 is embedded in sealing grafting set 23
In the annular groove of upper end；Releasing-joint sealing ring 2102 is located at the connection position between elastic release piece 2101 and releasing-joint 2103
It sets, to be sealed to the connecting portion between elastic release piece 2101 and releasing-joint 2103.
Wherein, since the upper end of sealing grafting set 23 is provided with annular groove, when the downward jarring gas nozzle of surface personnel
When throw in catcher 2, which can be embedded in sealing grafting and cover in the annular groove of 23 upper ends.
It should be noted that elastic release piece 2101 can be attached by external screw thread and releasing-joint 2103, and lead to
It crosses releasing-joint sealing ring 2102 to be sealed, to make connection between elastic release piece 2101 and releasing-joint 2103 more
Closely.
It should also be noted that, can be connected by external screw thread between elastic release piece 2101 and releasing-joint 2103
It connects, naturally it is also possible to be attached by other means, the embodiment of the present invention is not specifically limited in this embodiment.
In addition, ground handling people can upward jarring gas after closing piece 24 and the first salvaging sealing shroud 13 are locked
Mouth throw in catcher 2, since elastic release piece 2101 has elasticity, referring to Fig. 1 E, which can be from sealing
Spreading in the annular groove of grafting set 23 makes surplus in releasing tool 210 and gas nozzle throw in catcher 2 to be detached from sealing grafting set 23
Remaining part part is in state of giving up.
It should be noted that surface personnel can make gas nozzle pulling by way of upward jarring gas nozzle throw in catcher 2
Device 2 is in state of giving up, and can also be operated in other way, for example, above proposing operation etc., the embodiment of the present invention is to this
It is not specifically limited.
Referring to Fig. 1 F, dual-grip flow controller seating nipple 1 further includes at least one lower slips 15, at least one packing element 16 and extremely
Few upper slips 17；
At least one lower slips 15, at least one packing element 16 and at least one upper slips 17 are socketed in seating nipple ontology 11
Outside, and at least one packing element 16 is located at the top of at least one lower slips 15, at least one upper slips 17 is located at least one
The top of a packing element 16.
Wherein, which can be symmetrically distributed in the same horizontal line of dual-grip flow controller seating nipple 1
On, naturally it is also possible to it is mal-distribution, the embodiment of the present invention is not specifically limited in this embodiment.Similarly, at least one lower slips
15 can be symmetrically distributed in the same horizontal line of dual-grip flow controller seating nipple 1, naturally it is also possible to be mal-distribution, this hair
Bright embodiment is equally not specifically limited this.
In addition, when surface personnel carries out jarring to gas nozzle throw in catcher 2, since the first salvaging sealing shroud 13 is socketed in
11 outside of seating nipple ontology is close to the position of gas nozzle throw in catcher 2, and therefore, the active force which generates can equally be applied to this
Dual-grip flow controller seating nipple 1, at this point, at least one lower slips 15 and at least one upper slips 17 can be by the dual-grip sections
Stream device seating nipple 1 is fixed in gas well.
It should be noted that also may include more since at least one lower slips 15 may include a lower slips 15
A lower slips 15 ensure that the flow controller is steady in gas well when at least one lower slips 15 include multiple lower slips 15
Solidity.Similarly, multiple upper slips 17 can equally guarantee stability of the flow controller in gas well.
Furthermore in embodiments of the present invention, for the every two packing element 16 at least one packing element 16, every two packing element 16
Between can be connected by steel loop, and the internal diameter of the internal diameter of at least one packing element 16 and steel loop is with seating nipple ontology 11 respectively
Clearance fit.
It should also be noted that, at least one packing element 16 can be split to form by a complete packing element 16, when this is complete
When breakage occurs for whole packing element 16, since the complete packing element 16 being divided, only need to be to the packing element 16 of the breakage
It carrying out with changing, without carrying out entire packing element 16 with changing, to save with changing this into, while increasing replacement effect
Rate.
In embodiments of the present invention, which includes dual-grip flow controller seating nipple and gas nozzle throw in catcher, when needs pair
When gas nozzle is replaced, the modes such as fisher being proposed by jarring or above and cut shear pin, after shear pin is cut, which is inserted
Connection between female connector and closing piece fixing sleeve disconnects, and the protrusion of the closing piece is unlocked from the inside groove of the first salvaging sealing shroud, namely
It is that being connected to during surface personnel above mentions gas nozzle throw in catcher between the closing piece and the first salvaging sealing shroud disconnects,
So as to pulling the gas nozzle throw in catcher out from underground, the replacement of gas nozzle is carried out, when avoiding with steel wire salvaging flow controller, steel wire
It is easy the problem of being pulled off.Simultaneously as surface personnel can easily salvage the gas nozzle throw in catcher, thus
It ensure that the number of wire Launching and Bailing improves the service life of flow controller and the efficiency with mouth of taking a breath when carrying out gas nozzle replacement.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of flow controller, which is characterized in that the flow controller includes dual-grip flow controller seating nipple and gas nozzle throw in catcher, described
Dual-grip flow controller seating nipple is located at the lower section of gas nozzle throw in catcher；
The dual-grip flow controller seating nipple includes seating nipple ontology, connector sleeve and the first salvaging sealing shroud；
The first salvaging sealing shroud is socketed in the seating nipple outer body close to the position of the gas nozzle throw in catcher, the company
Female connector is socketed in the described first lower section for salvaging sealing shroud, and described first salvages sealing shroud in the gas nozzle throw in catcher
Side is provided with inside groove；
The gas nozzle throw in catcher includes gas nozzle fixing sleeve, gas nozzle, sealing grafting set, closing piece, closing piece fixing sleeve and shear pin；
The gas nozzle is socketed in the upper end of the gas nozzle fixing sleeve, is socketed with institute on the outside of the gas nozzle fixing sleeve and the gas nozzle
Sealing grafting set is stated, the sealing grafting, which is covered, salvages close to the position of the gas nozzle fixing sleeve and the gas nozzle positioned at described first
Exist between the inside of sealing shroud and the inside groove for salvaging sealing shroud described first there is no gap, the sealing grafting set empty
Gap；
The closing piece fixing sleeve by the shear pin be socketed in the outside of the sealing grafting set far from the gas nozzle fixing sleeve and
The position of the gas nozzle, and the closing piece fixing sleeve is located at the described first top for salvaging sealing shroud；
The closing piece is arranged in the gap between the sealing grafting set and the inside groove of the first salvaging sealing shroud, and described
Closing piece is located at the bottom of the closing piece fixing sleeve, and the closing piece is provided with protrusion close to the side of the first salvaging sealing shroud,
With when the sealing grafting set moves down, by sealing grafting set and the closing piece fixing sleeve, by the protrusion of the closing piece
It is locked in the inside groove that described first salvages sealing shroud, and when the shear pin is cut, is covered by the sealing grafting and described
The protrusion of the closing piece is unlocked from the inside groove of the first salvaging sealing shroud, is thrown with salvaging the gas nozzle by closing piece fixing sleeve
Fish out device.
2. flow controller as described in claim 1, which is characterized in that the dual-grip flow controller seating nipple further includes the first sealing
Circle；
First sealing ring is located at the link position between the connector sleeve and the first salvaging sealing shroud, will be described
Connector sleeve is connected and sealed with the first salvaging sealing shroud.
3. flow controller as described in claim 1, which is characterized in that the gas nozzle throw in catcher further includes the second sealing ring；
Second sealing ring is located at the sealing grafting set and described first and salvages the position that gap is not present between sealing shroud
Place, by it is described sealing grafting set it is described first salvage sealing shroud between there is no the positions in gap to be sealed.
4. flow controller as described in claim 1, which is characterized in that the gas nozzle throw in catcher further include lock ring, second salvage it is close
Big envelope and releasing tool；
The lock ring is socketed in the sealing grafting and covers the position far from the gas nozzle fixing sleeve and the gas nozzle, the work of giving up
Tool is socketed in the top of the sealing grafting set, and the second salvaging sealing shroud is socketed in the lock ring and the releasing tool
Outside, the second salvaging sealing shroud are located at the top of the closing piece fixing sleeve.
5. flow controller as claimed in claim 4, which is characterized in that the gas nozzle throw in catcher further includes third sealing ring；
The third sealing ring is located at the link position that described second salvages between sealing shroud and the closing piece fixing sleeve, will
The second salvaging sealing shroud is connected and sealed with the closing piece fixing sleeve.
6. flow controller as claimed in claim 4, which is characterized in that the releasing tool includes elastic release piece, releasing-joint
Sealing ring and releasing-joint；Correspondingly, the upper end of the sealing grafting set is provided with annular groove；
The top of the sealing grafting set is arranged in the releasing-joint, and the elasticity release piece setting is leaned in the releasing-joint
The position of the nearly sealing grafting set, and when launching the gas nozzle throw in catcher, the elasticity release piece is embedded in the sealing
In the annular groove of grafting set upper side；
The releasing-joint sealing ring is located at the link position between the elastic release piece and the releasing-joint, to described
Connecting portion between elastic release piece and the releasing-joint is sealed.
7. flow controller as described in claim 1, which is characterized in that the dual-grip flow controller seating nipple further includes at least one
Lower slips, at least one packing element and at least one upper slips；
At least one described lower slips, at least one described packing element and at least one described upper slips are socketed in the seating nipple
The outside of ontology, and at least one described packing element is located at the top of at least one lower slips, at least one described upper slips
Positioned at the top of at least one packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511843.7A CN107558961B (en) | 2016-06-30 | 2016-06-30 | A kind of underground throttle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610511843.7A CN107558961B (en) | 2016-06-30 | 2016-06-30 | A kind of underground throttle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107558961A CN107558961A (en) | 2018-01-09 |
| CN107558961B true CN107558961B (en) | 2019-09-06 |
Family
ID=60968738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610511843.7A Active CN107558961B (en) | 2016-06-30 | 2016-06-30 | A kind of underground throttle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107558961B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202170785U (en) * | 2011-08-03 | 2012-03-21 | 北京金科龙石油技术开发有限公司 | Post-positioned downhole throttler |
| CN203783547U (en) * | 2013-10-18 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle |
| CN204175261U (en) * | 2014-09-29 | 2015-02-25 | 中国石油天然气股份有限公司 | A kind of restriction choke |
| CN204252973U (en) * | 2014-11-12 | 2015-04-08 | 中国石油天然气股份有限公司 | A kind of split type underground throttle device |
| CN105370553A (en) * | 2014-08-26 | 2016-03-02 | 中国石油天然气股份有限公司 | Well plunger |
| CN105443087A (en) * | 2014-08-29 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground restrictor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1727962B1 (en) * | 2004-03-22 | 2008-01-02 | Shell Internationale Research Maatschappij B.V. | Method of injecting lift gas into a production tubing of an oil well and gas lift flow control device for use in the mehtod |
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| CN202170785U (en) * | 2011-08-03 | 2012-03-21 | 北京金科龙石油技术开发有限公司 | Post-positioned downhole throttler |
| CN203783547U (en) * | 2013-10-18 | 2014-08-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle |
| CN105370553A (en) * | 2014-08-26 | 2016-03-02 | 中国石油天然气股份有限公司 | Well plunger |
| CN105443087A (en) * | 2014-08-29 | 2016-03-30 | 中国石油天然气股份有限公司 | Underground restrictor |
| CN204175261U (en) * | 2014-09-29 | 2015-02-25 | 中国石油天然气股份有限公司 | A kind of restriction choke |
| CN204252973U (en) * | 2014-11-12 | 2015-04-08 | 中国石油天然气股份有限公司 | A kind of split type underground throttle device |
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| CN107558961A (en) | 2018-01-09 |
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