CN107558961A - Underground throttle - Google Patents
Underground throttle Download PDFInfo
- Publication number
- CN107558961A CN107558961A CN201610511843.7A CN201610511843A CN107558961A CN 107558961 A CN107558961 A CN 107558961A CN 201610511843 A CN201610511843 A CN 201610511843A CN 107558961 A CN107558961 A CN 107558961A
- Authority
- CN
- China
- Prior art keywords
- sealing
- valve
- salvaging
- fixed cover
- closing piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 204
- 210000002445 nipple Anatomy 0.000 claims description 37
- 238000012856 packing Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses an underground restrictor, and belongs to the technical field of gas production. The throttleer comprises a double-slip throttleer working barrel and an air tap throwing and fishing device, wherein the double-slip throttleer working barrel is positioned below the air tap throwing and fishing device; the double-slip throttleer working barrel comprises a working barrel body, a connecting sleeve and a first dredging sealing sleeve; the air nozzle throwing and fishing device comprises an air nozzle fixing sleeve, an air nozzle, a sealing insertion sleeve, a locking block fixing sleeve and a shear pin. In the invention, when the air nozzle needs to be replaced, the air nozzle throwing and fishing device can be lifted up to cut off the shear pin, so that the connection between the sealing plug sleeve and the lock block fixing sleeve is disconnected, and the connection between the lock block and the first fishing sealing sleeve is disconnected in the process of lifting the air nozzle throwing and fishing device by ground workers, so that the air nozzle throwing and fishing device can be fished out from the underground to replace the air nozzle, the problem that the steel wire is easily broken when the air nozzle is fished by the steel wire is solved, the service life of the air nozzle is prolonged, and the efficiency of the air nozzle is improved.
Description
Technical field
The present invention relates to production gas technology field, more particularly to a kind of underground throttle device.
Background technology
Downhole Choking Technology is that underground throttle device is arranged on into appropriate location in gas well, it is possible to achieve the well of gas well
Reducing pressure by regulating flow in cylinder, while the cryogenic natural gas after the throttling of stratum energy heats can be utilized, and reduce section
Gas pressure and hydrate production temperature after stream, prevent from forming Hydrate Plugging, improve gas so as to reach
The purpose of well production.But bottom energy declines quickly after being gone into operation due to natural gas individual well, stratum heat energy pair
The effect that cryogenic natural gas after throttling is heated can decline, so as to cause day hot gas yield to decline, therefore,
Need in time to come out flow controller from underground fishing, and the valve of flow controller is changed, so as to adjust pair
The utilization of stratum energy, improve gas production.
During the present invention is realized, inventor has found that prior art at least has problems with：
Due to generally having a large amount of hydrops on flow controller, it is difficult to save when salvaging the flow controller with steel wire
Flow device to unseal from underground, so as to easily cause steel wire fracture, cause the valve failure for changing flow controller.
The content of the invention
In order to solve problem of the prior art, the embodiments of the invention provide a kind of underground throttle device.The skill
Art scheme is as follows：
On the one hand, there is provided a kind of flow controller, the flow controller include dual-grip flow controller seating nipple and valve
Throw in catcher, the dual-grip flow controller seating nipple are located at the lower section of valve throw in catcher；
The dual-grip flow controller seating nipple includes seating nipple body, adapter sleeve and first salvages sealing shroud；
The first salvaging sealing shroud is socketed in the seating nipple outer body close to the position of the valve throw in catcher
Put, the adapter sleeve is socketed in the described first lower section for salvaging sealing shroud, and the first salvaging sealing shroud leans on
Inside groove is provided with the inside of the nearly valve throw in catcher；
The valve throw in catcher includes valve fixed cover, valve, sealing grafting set, closing piece, closing piece fixed cover
And shear pin；
The valve is socketed in the upper end of the valve fixed cover, the valve fixed cover and the valve it is outer
Side is socketed with the sealing grafting set, and the sealing grafting set is close to the valve fixed cover and the valve
Position is positioned at the inside of the described first salvaging sealing shroud and space is not present, the sealing grafting set and described the
Space be present between the inside groove of one salvaging sealing shroud；
The closing piece fixed cover is socketed in the outside of the sealing grafting set away from the valve by the shear pin
The position of fixed cover and the valve, and the closing piece fixed cover is positioned at the described first top for salvaging sealing shroud；
The closing piece is arranged on the space between the inside groove of the sealing grafting set and the first salvaging sealing shroud
It is interior, and the closing piece is located at the bottom of the closing piece fixed cover, the closing piece salvages sealing close to described first
The side of set is provided with projection, when the sealing grafting set moves down, to pass through the sealing grafting set and institute
Closing piece fixed cover is stated, the projection of the closing piece is locked in the described first inside groove for salvaging sealing shroud, and
When the shear pin is cut, by the sealing grafting set and the closing piece fixed cover, by the projection of the closing piece
Unlocked from the inside groove of the described first salvaging sealing shroud, to salvage the valve throw in catcher.
Alternatively, the dual-grip flow controller seating nipple also includes the first sealing ring；
First sealing ring is located at the link position between the adapter sleeve and the first salvaging sealing shroud
Place, the adapter sleeve and the described first salvaging sealing shroud are connected and sealed.
Alternatively, the valve throw in catcher also includes the second sealing ring；
Sky is not present between the sealing grafting set and the first salvaging sealing shroud in second sealing ring
The opening position of gap, the sealing grafting set is salvaged described first space is not present between sealing shroud
Position is sealed.
Alternatively, the valve throw in catcher also includes lock ring, the second salvaging sealing shroud and releasing tool；
The lock ring is socketed in the position of the sealing grafting set away from the valve fixed cover and the valve,
The releasing tool is socketed in the top of the sealing grafting set, and the second salvaging sealing shroud is socketed in described
The outside of lock ring and the releasing tool, the second salvaging sealing shroud are located at the top of the closing piece fixed cover.
Alternatively, the valve throw in catcher also includes the 3rd sealing ring；
3rd sealing ring salvages the connection position between sealing shroud and the closing piece fixed cover positioned at described second
Place is put, the described second salvaging sealing shroud is connected and sealed with the closing piece fixed cover.
Alternatively, the releasing tool includes elastic release piece, releasing-joint sealing ring and releasing-joint；Phase
Ying Di, the upper end of the sealing grafting set are provided with annular groove；
The releasing-joint is arranged on the top of the sealing grafting set, and the elastic release piece is arranged on described
Releasing-joint is close to the position of the sealing grafting set, and when launching the valve throw in catcher, the elasticity
Release piece is embedded in the annular groove of the sealing grafting set upper side；
Company of the releasing-joint sealing ring between the elastic release piece and the releasing-joint sealing ring
Position is connect, to be sealed to the connecting portion between the elastic release piece and the releasing-joint sealing ring.
Alternatively, the dual-grip flow controller seating nipple also includes at least one lower slipses, at least one packing element
With at least one upper slipses；
At least one lower slipses, at least one packing element and at least one upper slipses are socketed in
The outside of the seating nipple body, and at least one packing element is located at the top of at least one lower slipses,
At least one upper slipses are located at the top of at least one packing element.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：In embodiments of the present invention, should
Flow controller includes dual-grip flow controller seating nipple and valve throw in catcher, can when needing to change valve
Cut shear pin in a manner of by jarring or above carrying fisher etc., after shear pin is cut, sealing grafting set and
Connection between closing piece fixed cover disconnects, and the raised of the closing piece unlocks from the inside groove of the first salvaging sealing shroud,
It that is to say, the surface personnel that is connected between the closing piece and the first salvaging sealing shroud above carries valve throw in catcher
During disconnect, so as to which the valve throw in catcher is pulled out from underground, carry out the replacing of valve, avoid
During with steel wire salvaging flow controller, the problem of steel wire is easily pulled off.Simultaneously as surface personnel can
Easily to be salvaged to the valve throw in catcher, when carrying out valve replacing so as to ensure that, wire Launching and Bailing
Number, improve flow controller life-span and change valve efficiency.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Figure 1A is the structural representation of the first flow controller provided in an embodiment of the present invention；
Figure 1B is a kind of original state schematic diagram of valve throw in catcher underground provided in an embodiment of the present invention；
Fig. 1 C are the structural representations of second of flow controller provided in an embodiment of the present invention；
Fig. 1 D are the structural representations of the third flow controller provided in an embodiment of the present invention；
A kind of valve throw in catcher provided in an embodiment of the present invention is in view of giving up during Fig. 1 E；
Fig. 1 F are a kind of structural representations of dual-grip flow controller seating nipple provided in an embodiment of the present invention.
Reference：
1：Dual-grip flow controller seating nipple, 2：Valve throw in catcher；
11：Seating nipple body, 12：Adapter sleeve, 13：First salvaging sealing shroud, 14：First sealing ring,
15：At least one lower slipses, 16：At least one packing element, 17：At least one upper slipses；
21：Valve fixed cover, 22：Valve, 23：Sealing grafting set, 24：Closing piece, 25：Closing piece is fixed
Set, 26：Shear pin, 27：Second sealing ring, 28：Lock ring, 29：Second salvaging sealing shroud, 210：Give up
Instrument, 211：3rd sealing ring；
2101：Elastic release piece, 2102：Releasing-joint sealing ring, 2103：Releasing-joint.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Figure 1A is a kind of structural representation of flow controller provided in an embodiment of the present invention, referring to Figure 1A, the section
Stream device includes dual-grip flow controller seating nipple 1 and valve throw in catcher 2, and dual-grip flow controller seating nipple 1 is located at gas
The lower section of mouth throw in catcher 2；
Dual-grip flow controller seating nipple 1 includes seating nipple body 11, adapter sleeve 12 and first salvages sealing shroud
13；First salvaging sealing shroud 13 is socketed in the position of the close valve throw in catcher 2 in the outside of seating nipple body 11,
Adapter sleeve 12 is socketed in the lower section of the first salvaging sealing shroud 13, and first salvages sealing shroud 13 close to valve throwing
The inner side for dragging for device 2 is provided with inside groove；Valve throw in catcher 2 includes valve fixed cover 21, valve 22, seals and insert
Female connector 23, closing piece 24, closing piece fixed cover 25 and shear pin 26；Valve 22 is socketed in valve fixed cover 21
The outside of upper end, valve fixed cover 21 and valve 22 is socketed with sealing grafting set 23, and sealing grafting set 23 leans on
Positioned at the inside of the first salvaging sealing shroud 13 and space is not present in the position of nearly valve fixed cover 21 and valve 22,
Space be present between the inside groove of sealing grafting set 23 and the first salvaging sealing shroud 13；Closing piece fixed cover 25 passes through
Shear pin 26 is socketed in position of the outside away from valve fixed cover 21 and valve 22 of sealing grafting set 23, and
Closing piece fixed cover 25 is positioned at the first top for salvaging sealing shroud 13；Closing piece 24 is arranged on sealing grafting set 23
And first salvage in the space between the inside groove of sealing shroud 13, and closing piece 24 is located at the bottom of closing piece fixed cover 25
Portion, closing piece 24 are provided with projection close to the side of the first salvaging sealing shroud 13, with sealing grafting set 23
During shifting, by sealing grafting set 23 and closing piece fixed cover 25, the projection of closing piece 24 is locked in the first salvaging
In the inside groove of sealing shroud 13, and when shear pin 26 is cut, by sealing grafting set 23 and closing piece fixed cover 24,
Raised by closing piece 24 unlocks from the inside groove of the first salvaging sealing shroud 13, to salvage valve throw in catcher 2.
Because the valve 22 is socketed in the upper end of valve fixed cover 21, valve fixed cover 21 and valve 22
Outside is socketed with sealing grafting set 23, and sealing grafting set 23 is close to the position of valve fixed cover 21 and valve 22
Positioned at the inside of the first salvaging sealing shroud 13 and space is not present, closing piece fixed cover 25 is socketed by shear pin 26
23 position of the outside away from valve fixed cover 21 and valve 22, and closing piece fixed cover 25 are covered in sealing grafting
The top for salvaging sealing shroud 13 positioned at first；Closing piece 24 is arranged on sealing grafting set 23 and first and salvages sealing
In space between the inside groove of set 13；The first salvaging sealing shroud 13 is socketed in the outside of seating nipple body 11 and leaned on
The position of nearly valve throw in catcher 2, adapter sleeve 12 are socketed in the lower section of the first salvaging sealing shroud 13, and first
Salvage sealing shroud 13 and the inner side of valve throw in catcher 2 is provided with inside groove, therefore, when surface personnel is led to
When crossing the steel wire progress salvaging of valve 22, shear pin 26 can be cut, makes sealing grafting set 23 and closing piece fixed cover
Connection between 25 disconnects, and it is upper carry valve throw in catcher 2 when, closing piece fixed cover 25 and sealing grafting set
23 can move up, so that the raised of the closing piece 24 unlocks from the inside groove of the first salvaging sealing shroud 13, from
And salvage outlet nozzle throw in catcher.Surface personnel can be to the valve or miscellaneous part in valve throw in catcher
Changed, and the valve throw in catcher after replacing put into gas well again, complete the replacing to valve,
Avoid during salvaging valve throw in catcher occur steel wire fracture the problem of, improve change valve effect
Rate.
Wherein, when dual-grip flow controller seating nipple and valve throw in catcher are sequentially placed into gas well by surface personnel
In after, referring to Figure 1B, Figure 1B is original state of the valve throw in catcher in underground, sealing grafting set and the
The position in space between one salvaging sealing shroud be present includes a groove, and the closing piece 24 is positioned at sealing grafting set 23
Groove in, when surface personnel utilizes delivery tool weighted lever and bumper jar, downward jarring valve is thrown
When dragging for device, sealing grafting set 23 can be promoted to move down, while sealing grafting set 23 can promote lock
Block 24 is moved from inside to outside from groove, and the first salvaging sealing shroud 13 can be locked in so as to the projection of the closing piece 24
Inside groove in, realize valve throw in catcher and dual-grip throttling seating nipple locking, complete the replacing to valve.
It should be noted that in order to closing piece 24 locking first salvage sealing shroud 13 when, closing piece fixed cover 25
Preferably fixed closing piece 24, the closing piece 24 are connected opening position with closing piece fixed cover 25, the radial direction of closing piece 24
Maximal side should be greater than the radial direction maximal side of the inner groovy of closing piece fixed cover 25.
In addition, in embodiments of the present invention, delivery tool and bumper jar, downward jarring valve can be passed through
Throw in catcher, naturally it is also possible to jarring is carried out by other instruments or mode, the embodiment of the present invention is not done to this to be had
Body limits.
Referring to Figure 1A, dual-grip flow controller seating nipple 1 also includes the first sealing ring 14；
First sealing ring 14 is located at the link position that adapter sleeve 12 and first is salvaged between sealing shroud 13, with
Adapter sleeve 12 and the first salvaging sealing shroud 13 are connected and sealed.
It should be noted that the first sealing ring 14 has sealing function, and first sealing ring 14 not only may be used
So that the first connection salvaged between sealing shroud 13 and adapter sleeve 12 is even closer, while prevent gas
Leaked from flow controller, so as to add the throttling yield of flow controller.
Referring to Figure 1A, valve throw in catcher 2 also includes the second sealing ring 27；
Space is not present between sealing grafting set 23 and the first salvaging sealing shroud 13 in second sealing ring 27
Opening position, the position in the absence of space sealed between the salvaging sealing shroud 13 of grafting set 23 and first is entered
Row sealing.
It should be noted that the second sealing ring 27 has sealing function, and second sealing ring 27 not only may be used
So that sealing grafting set 23 and the first connection salvaged between sealing shroud 13 are even closer, prevent simultaneously
Gas leaks from flow controller, so as to add the throttling yield of flow controller.
Referring to Fig. 1 C, valve throw in catcher 2 also includes lock ring 28, second and salvages sealing shroud 29 and releasing tool
210；
Lock ring 28 is socketed in sealing grafting and covers 23 positions away from valve fixed cover 21 and valve 22, gives up
Instrument 210 is socketed in the top of sealing grafting set 23, and the second salvaging sealing shroud 29 is socketed in lock ring 28 and lost
The outside of hand-held tool 210, the second salvaging sealing shroud 29 are located at the top of closing piece fixed cover 25.
Wherein, after sealing shroud 13 are salvaged in the locking of closing piece 24 first, because lock ring 28 is socketed in sealing grafting
23 positions away from valve fixed cover 21 and valve 22 are covered, therefore, lock ring 28 can be by the sealing grafting
Set is fixed, so as to prevent seal grafting set move up, further ensure that closing piece 24 and first salvaging
Connection between sealing shroud.
Due to releasing tool 210 be socketed in sealing grafting set 23 top, therefore, when surface personnel to
, can be downward so as to which grafting set 23 will be sealed with the jarring releasing tool 210 during lower jarring valve throw in catcher 2
Carry out jarring.
In addition, second salvage sealing shroud 29 and closing piece fixed cover 25 can by screwed connection, and this second
Salvage the top that sealing shroud 29 is located at closing piece fixed cover 25.
It should be noted that it can be connected between the second salvaging sealing shroud 29 and closing piece fixed cover 25 by screw thread
Connect, naturally it is also possible to be attached by other means, the embodiment of the present invention is not specifically limited to this.
Referring to Fig. 1 C, valve throw in catcher 2 also includes the 3rd sealing ring 211；
3rd sealing ring 211 salvages the link position between sealing shroud 28 and closing piece fixed cover 25 positioned at second
Place, the second salvaging sealing shroud 28 is connected and sealed with closing piece fixed cover 25.
It should be noted that the 3rd sealing ring 211 equally plays sealing, it can not only make the second salvaging
Connection between sealing shroud 28 and closing piece fixed cover 25 is more close, while prevents gas from throttling
Leaked in device, so as to add the throttling yield of flow controller.
Referring to Fig. 1 D, releasing tool 210 includes elastic release piece 2101, the and of releasing-joint sealing ring 2102
Releasing-joint 2103；Correspondingly, the upper end for sealing grafting set 23 is provided with annular groove；
Releasing-joint 2103 is arranged on the top of sealing grafting set 23, and elastic release piece 2102 is arranged on release
Joint 2103 covers 23 position close to sealing grafting, and when launching valve throw in catcher 2, elastic release piece
2101, which are embedded in sealing grafting, covers in the annular groove of 23 upper ends；Releasing-joint sealing ring 2102 is released positioned at elasticity
The link position between pawl 2101 and releasing-joint sealing ring 2102 is put, with to elastic release piece 2101 and releasing
The connecting portion put between joint sealing circle 2102 is sealed.
Wherein, because the upper end of sealing grafting set 23 is provided with annular groove, therefore, when surface personnel is downward
During jarring valve throw in catcher 2, the elastic release piece 2101 can be embedded in the ring that sealing grafting covers 23 upper ends
In shape groove.
It should be noted that elastic release piece 2101 can be connected by external screw thread and releasing-joint 2103
Connect, and sealed by releasing-joint sealing ring 2102, so that elastic release piece 2101 connects with release
Connection between first 2103 is even closer.
It should also be noted that, external screw thread can be passed through between elastic release piece 2101 and releasing-joint 2103
It is attached, naturally it is also possible to be attached by other means, the embodiment of the present invention does not do specific limit to this
It is fixed.
In addition, after closing piece 24 and first is salvaged sealing shroud 13 and locked, ground handling people can be to
Upper jarring valve throw in catcher 2, because elastic release piece 2101 is flexible, therefore, referring to Fig. 1 E, the bullet
Property release piece 2101 can from sealing grafting set 23 annular groove in spreading, so as to depart from sealing grafting set 23,
Releasing tool 210 is set to be in state of giving up with the remainder in valve throw in catcher 2.
It should be noted that surface personnel can be made by way of upward jarring valve throw in catcher 2
Valve throw in catcher 2 is in state of giving up, and can also be operated in other way, such as, above carry behaviour
Make etc., the embodiment of the present invention is not specifically limited to this.
Referring to Fig. 1 F, dual-grip flow controller seating nipple 1 also includes at least one lower slipses 15, at least one glue
Cylinder 16 and at least one upper slipses 17；
At least one lower slipses 15, at least one packing element 16 and at least one upper slipses 16 are socketed in work
The outside of cylinder body 11, and at least one packing element 16 is located at the top of at least one lower slipses 15, at least one
Individual upper slipses 16 are located at the top of at least one packing element 16.
Wherein, at least one lower slipses 15 can be symmetrically distributed in the same of dual-grip flow controller seating nipple 1
On horizontal line, naturally it is also possible to be mal-distribution, the embodiment of the present invention is not specifically limited to this.Similarly,
At least one lower slipses 15 can be symmetrically distributed in the same horizontal line of dual-grip flow controller seating nipple 1,
Can certainly be mal-distribution, the embodiment of the present invention is equally not specifically limited to this.
In addition, when surface personnel carries out jarring to valve throw in catcher 2, due to the first salvaging sealing shroud
13 are socketed in the outside of seating nipple body 11 close to the position of valve throw in catcher 2, therefore, make caused by the jarring
The dual-grip flow controller seating nipple 1 firmly can be equally applied to, now, at least one He of lower slipses 15
The dual-grip flow controller seating nipple 1 can be fixed in gas well by least one upper slipses 16.
It should be noted that because at least one lower slipses 15 can include a lower slipses 15, can also
Including multiple lower slipses 15, when this is at least one has descended slips 15 to include multiple lower slipses 15, ensure that
Steadiness of the flow controller in gas well.Similarly, multiple upper slipses 17 can equally ensure the flow controller in gas
Steadiness in well.
Furthermore in embodiments of the present invention, for each two packing element 16 at least one packing element 16, every two
It can be connected between individual packing element 16 by steel loop, and the internal diameter of the internal diameter of at least one packing element 16 and steel loop
Coordinate respectively with seating nipple main body 11 for gap.
It should also be noted that, at least one packing element 16 can be split to form by a complete packing element 16,
When breakage occurs for the complete packing element 16, due to the complete packing element 16 being split, therefore,
The damaged packing element 16 need to be only carried out with changing, without whole packing element 16 is carried out with changing, so as to
Save with changing this into, while add replacing efficiency.
In embodiments of the present invention, the flow controller includes dual-grip flow controller seating nipple and valve throw in catcher, when
When needing to change valve, the modes such as fisher can be put forward by jarring or above and cut shear pin, work as shear pin
After cutting, connection between the sealing grafting set and closing piece fixed cover disconnects, the closing piece it is raised from first
Salvage and unlocked in the inside groove of sealing shroud, be that is to say, be connected to ground between the closing piece and the first salvaging sealing shroud
Face staff disconnects during above carrying valve throw in catcher, so as to which the valve throw in catcher is dragged for from underground
Go out, carry out the replacing of valve, when avoiding with steel wire salvaging flow controller, the problem of steel wire is easily pulled off.
Simultaneously as surface personnel easily can salvage to the valve throw in catcher, so as to ensure that
When carrying out valve replacing, the number of wire Launching and Bailing, the life-span of flow controller and the efficiency with mouth of taking a breath are improved.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of flow controller, it is characterised in that the flow controller includes dual-grip flow controller seating nipple and valve
Throw in catcher, the dual-grip flow controller seating nipple are located at the lower section of valve throw in catcher；
The dual-grip flow controller seating nipple includes seating nipple body, adapter sleeve and first salvages sealing shroud；
The first salvaging sealing shroud is socketed in the seating nipple outer body close to the position of the valve throw in catcher
Put, the adapter sleeve is socketed in the described first lower section for salvaging sealing shroud, and the first salvaging sealing shroud leans on
Inside groove is provided with the inside of the nearly valve throw in catcher；
The valve throw in catcher includes valve fixed cover, valve, sealing grafting set, closing piece, closing piece fixed cover
And shear pin；
The valve is socketed in the upper end of the valve fixed cover, the valve fixed cover and the valve it is outer
Side is socketed with the sealing grafting set, and the sealing grafting set is close to the valve fixed cover and the valve
Position is positioned at the inside of the described first salvaging sealing shroud and space is not present, the sealing grafting set and described the
Space be present between the inside groove of one salvaging sealing shroud；
The closing piece fixed cover is socketed in the outside of the sealing grafting set away from the valve by the shear pin
The position of fixed cover and the valve, and the closing piece fixed cover is positioned at the described first top for salvaging sealing shroud；
The closing piece is arranged on the space between the inside groove of the sealing grafting set and the first salvaging sealing shroud
It is interior, and the closing piece is located at the bottom of the closing piece fixed cover, the closing piece salvages sealing close to described first
The side of set is provided with projection, when the sealing grafting set moves down, to pass through the sealing grafting set and institute
Closing piece fixed cover is stated, the projection of the closing piece is locked in the described first inside groove for salvaging sealing shroud, and
When the shear pin is cut, by the sealing grafting set and the closing piece fixed cover, by the projection of the closing piece
Unlocked from the inside groove of the described first salvaging sealing shroud, to salvage the valve throw in catcher.
2. flow controller as claimed in claim 1, it is characterised in that the dual-grip flow controller seating nipple is also
Including the first sealing ring；
First sealing ring is located at the link position between the adapter sleeve and the first salvaging sealing shroud
Place, the adapter sleeve and the described first salvaging sealing shroud are connected and sealed.
3. flow controller as claimed in claim 1, it is characterised in that the valve throw in catcher also includes second
Sealing ring；
Sky is not present between the sealing grafting set and the first salvaging sealing shroud in second sealing ring
The opening position of gap, the sealing grafting set is salvaged described first space is not present between sealing shroud
Position is sealed.
4. flow controller as claimed in claim 1, it is characterised in that the valve throw in catcher also include lock ring,
Second salvages sealing shroud and releasing tool；
The lock ring is socketed in the position of the sealing grafting set away from the valve fixed cover and the valve,
The releasing tool is socketed in the top of the sealing grafting set, and the second salvaging sealing shroud is socketed in described
The outside of lock ring and the releasing tool, the second salvaging sealing shroud are located at the top of the closing piece fixed cover.
5. flow controller as claimed in claim 4, it is characterised in that the valve throw in catcher also includes the 3rd
Sealing ring；
3rd sealing ring salvages the connection position between sealing shroud and the closing piece fixed cover positioned at described second
Place is put, the described second salvaging sealing shroud is connected and sealed with the closing piece fixed cover.
6. flow controller as claimed in claim 4, it is characterised in that the releasing tool includes elasticity and discharged
Pawl, releasing-joint sealing ring and releasing-joint；Correspondingly, the upper end of the sealing grafting set is provided with annular groove；
The releasing-joint is arranged on the top of the sealing grafting set, and the elastic release piece is arranged on described
Releasing-joint is close to the position of the sealing grafting set, and when launching the valve throw in catcher, the elasticity
Release piece is embedded in the annular groove of the sealing grafting set upper side；
Company of the releasing-joint sealing ring between the elastic release piece and the releasing-joint sealing ring
Position is connect, to be sealed to the connecting portion between the elastic release piece and the releasing-joint sealing ring.
7. flow controller as claimed in claim 1, it is characterised in that the dual-grip flow controller seating nipple is also
Including at least one lower slipses, at least one packing element and at least one upper slipses；
At least one lower slipses, at least one packing element and at least one upper slipses are socketed in
The outside of the seating nipple body, and at least one packing element is located at the top of at least one lower slipses,
At least one upper slipses are located 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 | Underground throttle |
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| CN201610511843.7A CN107558961B (en) | 2016-06-30 | 2016-06-30 | Underground throttle |
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| CN107558961A true CN107558961A (en) | 2018-01-09 |
| CN107558961B CN107558961B (en) | 2019-09-06 |
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| US20080121397A1 (en) * | 2004-03-22 | 2008-05-29 | Arthur William Galloway | Method Of Injecting Lift Gas Into A Production Tubing Of An Oil Well And Gas Lift Flow Control Device For Use In The Method |
| 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 | Throttling device |
| CN204252973U (en) * | 2014-11-12 | 2015-04-08 | 中国石油天然气股份有限公司 | Split type downhole choke ware |
| 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 throttle |
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2016
- 2016-06-30 CN CN201610511843.7A patent/CN107558961B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080121397A1 (en) * | 2004-03-22 | 2008-05-29 | Arthur William Galloway | Method Of Injecting Lift Gas Into A Production Tubing Of An Oil Well And Gas Lift Flow Control Device For Use In The Method |
| 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 throttle |
| CN204175261U (en) * | 2014-09-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Throttling device |
| CN204252973U (en) * | 2014-11-12 | 2015-04-08 | 中国石油天然气股份有限公司 | Split type downhole choke ware |
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| Publication number | Publication date |
|---|---|
| CN107558961B (en) | 2019-09-06 |
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