CN109763797A - A kind of underground throttle device - Google Patents
A kind of underground throttle device Download PDFInfo
- Publication number
- CN109763797A CN109763797A CN201910171970.0A CN201910171970A CN109763797A CN 109763797 A CN109763797 A CN 109763797A CN 201910171970 A CN201910171970 A CN 201910171970A CN 109763797 A CN109763797 A CN 109763797A
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- trustship
- peripheral surface
- central tube
- lock ring
- slips
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- 230000007246 mechanism Effects 0.000 claims abstract description 107
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 230000002093 peripheral effect Effects 0.000 claims description 70
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000012856 packing Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 210000000664 rectum Anatomy 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 240000005546 Piper methysticum Species 0.000 description 1
- 235000016787 Piper methysticum Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Abstract
The application provides a kind of underground throttle device, including central tube, salvaging solution sealing mechanism and setting self-locking mechanism are respectively equipped at the both ends of the central tube, it is solved in the salvaging and is equipped with locking sealing mechanism between sealing mechanism and setting self-locking mechanism, the salvaging solution sealing mechanism includes casing, trustship, slips support and lock ball, described sleeve pipe is sleeved on the central tube and is socketed with one end of the trustship, the other end of the trustship and the setting self-locking mechanism limit connect, the slips support is sleeved in the trustship and connects with the extension cap limit being sleeved in described sleeve pipe, the lock ball is arranged in the slips support by casing limit and makes the slips support and the trustship along the direction-locking of the central tube axis, the locking sealing mechanism be sleeved on the side wall of the trustship and respectively with the slips support and the setting self-locking mechanism It is connected.
Description
Technical field
This application involves gas well liquid loading downhole chokes to keep the temperature technical field of tools, in particular to a kind of underground throttle device.
Background technique
At present gas well liquid loading rely primarily on stratum energy maintain production, thus avoid using externally supply energy and power with
Achieve the purpose that it is energy-saving increase economic efficiency, therefore gas well higher for stratum energy is by the energy of itself
Mine gas can be given rise to ground completely, but the remote high-voltage transmission in ground is at high cost and dangerous, gas well terminal
It can not also benefit from.If conveyed again after being depressured using ground, gas can be absorbed and be taken away a large amount of in well head rapid decompression
Thermal energy, which causes well head to absorb vapor flash freeze, can not continue to produce, this just needs a series of mating thermal energy feed systems in ground
Normal production is safeguarded to guarantee that well head does not freeze, and ground heating system and process investment increase, while fuel supply cost is high
And pollution environment.
Therefore in the prior art, by the way that the underground throttle device and its supporting tool of belt segment gas mouth are passed through steel wire operation
The locking seat of mode, which is placed on appropriate location in oil pipe and is formed, to be separated and seals all channels other than gas nozzle, so that natural gas passes through well
Achieve the purpose that realize decompression after lower flow controller gas nozzle throttling.Although temperature reduces simultaneously in pressure reduction, due to by ground
The restriction of layer constant temperature, natural gas can fully absorb geothermal flow in the wellbore again while cooling, when the natural gas of lower pressure arrives
Holding higher temperature is thrown away when up to well head, it is not in temperature-fall period that ground, which no longer needs to time reducing pressure by regulating flow, can be directly remote defeated and sharp
With.
However common issue existing for existing several flow controllers domestic at present be cannot when being hampered during going into the well
Above propose unblocking, once above mention it is at once locking it is setting lead to not it is lower to design position；It is low to salvage deblocking success rate, needs replacing section
There is considerable part that can not pull replacement out when flowing the gas nozzle of device.Its reason mainly sets principle inherently slips in oil pipe
Wall tripping in is simultaneously set in upper mention, cause existing flow controller can only tripping in cannot above mention, salvage deblocking when require slips first
It loosens, and slips itself is engaged that tube inner wall is locking to be not easy unfreezing, and it is complete to affect oil exploitation natural gas well expenditure and pressure technique
It promotes in face.
Summary of the invention
The defect for aiming to overcome that the prior art of the application, provides a kind of underground throttle device.
To achieve the above object, the application adopts the technical scheme that
A kind of underground throttle device, including central tube 11 are respectively equipped with salvaging solution sealing mechanism at the both ends of the central tube 11
With setting self-locking mechanism, is solved in the salvaging and be equipped with locking sealing mechanism, the salvaging between sealing mechanism and setting self-locking mechanism
Solution sealing mechanism includes casing 4, trustship 12, slips support 10 and lock ball 9, described sleeve pipe 4 be sleeved on the central tube 11 and with institute
One end socket of trustship 12 is stated, the other end of the trustship 12 and the setting self-locking mechanism limit connect, the slips support 10
It is sleeved in the trustship 12 and is connected with the limit of extension cap 5 being sleeved in described sleeve pipe 4, the lock ball 9 is limited by casing 4
It is arranged in the slips support 10 and makes direction-locking of the slips support 10 with the trustship 12 along 11 axis of central tube,
The locking sealing mechanism be sleeved on the side wall of the trustship 12 and respectively with the slips support 10 and described setting from lock machine
Structure is connected.
Optionally, the underground throttle device further includes that mechanism and filtering throttle mechanism, the connection delivery machine are delivered in connection
One end of structure is connected by described sleeve pipe 4 with the central tube 11, and the other end and steel wire operation of mechanism are delivered in the connection
The delivery tool of machine is connected, and the filtering throttle mechanism setting solves sealing mechanism one end far from the salvaging in the central tube 11
End and be connected with the setting self-locking mechanism.
Optionally, salvaging solution sealing mechanism further includes mentioning link 7 and deblocking shear pin 8, the inner peripheral surface for mentioning link 7 with
Described sleeve pipe 4 is threadedly coupled for the link 7 that mentions to be fixedly mounted in described sleeve pipe 4, on the outer peripheral surface for mentioning link 7
Equipped with shear pin annular groove, the deblocking shear pin 8 is arranged on the side wall of the slips support 10 and matches with the shear pin annular groove, structure
It sets up an organization at described sleeve pipe 4 and the limit of the slips support 10.
Optionally, the slips support 10 is the isometrical tubular structure of outer peripheral surface, including be connected the first inside diameter 1001,
Second inside diameter 1002, third inside diameter 1005 and the 4th inside diameter 1006 are set on the side wall of first inside diameter 1001
There is the internal screw thread being connected with the extension cap 5, the installation solution is evenly distributed on the side wall of second inside diameter 1002
The radial shear pin threaded hole 1003 for sealing shear pin 8, the cyclic annular lock ball that the receiving lock ball 9 is equipped on the inside of third inside diameter 1005 are recessed
Slot 1004, the 4th inside diameter 1006 far from the end of described first inside diameter, 1001 one end be uniformly distributed there are three with institute
State the skewed slot 1007 that locking sealing mechanism is connected.
Optionally, the setting self-locking mechanism includes packing element support 16, lock ring support 17, lock ring 18 and lock ring care set 19, described
Lock ring 18, which is sleeved on the end of the trustship 12 and limits with the trustship 12, to be cooperated, and the lock ring support 17 is sleeved on the lock ring
18 outside is simultaneously mounted on the inner peripheral surface of described 19 one end of lock ring care set, and the packing element support 16 is sleeved in the trustship 12 simultaneously
With the outer peripheral surface screwed connection of described 19 one end of lock ring care set, the end of the other end of the lock ring care set 19 and the central tube 11
Portion's inner peripheral surface matches.
Optionally, the trustship 12 includes trustship extension diameter section 121 and trustship ontology 123, in the trustship extension diameter section 121
Side wall is equipped with the radial through-hole 122 of one group of installation lock ball 9, in the trustship ontology 123 far from the trustship extension diameter section 121 1
The outer wall at end is equipped with the first unidirectional sawtooth lock 124, and in the trustship ontology 123 far from the trustship extension diameter section 121
The inner wall of one end is equipped with sealing surface.
Optionally, the lock ring 18 is cyclic structure, including lock ring ontology 181, in the outer of 181 end of lock ring ontology
Circumferential surface is equipped with the male cone (strobilus masculinus) 182 matched with the lock ring support 17, is equipped on the inner peripheral surface of 181 end of lock ring ontology
The the second unidirectional sawtooth lock 183 matched with the described first unidirectional sawtooth lock 124.
Optionally, the locking sealing mechanism includes the slips 13 being set on 12 side wall of trustship, 14 and of sphenoid
Cartridge 15, one end of the slips 13 are connected with the slips support 10, the other end of the slips 13 and the wedge shape
One end of body 14 is slidably connected, and the other end of the sphenoid 14 and one end of the cartridge 15 abut against, the sealing
The other end of packing element 15 is abutted against with setting self-locking mechanism.
Optionally, the connection delivers mechanism and includes connector 1, shear pin 2 and mention hanging tube 3, described one end for mentioning hanging tube 3
It is set in described sleeve pipe 4 and is connected with the end of the central tube 11, the other end for mentioning hanging tube 3 passes through shear pin
2 are fixedly connected with one end of the connector 1, and the other end of the connector 1 is connected with the delivery tool of the steel wire operation machine.
Optionally, the filtering throttle mechanism includes adjusting steady pin 20, gas nozzle 21, attachment cap 22 and screen cover 23, described
Gas nozzle 21 is arranged in the central tube 11, and the screen cover 23 is sleeved on the outer peripheral surface of 11 end of central tube and props up
The end of the gas nozzle 21 is propped up to limit the gas nozzle 21, one end of the attachment cap 22 is sleeved on the screen cover
On 23 outer peripheral surface and by the limit of the annular convex platform that is arranged on 22 inner peripheral surface of attachment cap, the attachment cap 22 it is another
19 screwed connection of lock ring care set of end and the self-locking mechanism is simultaneously fixed by the steady adjusting of pin 20 of the adjusting.
Optionally, the central tube 11 is latus rectum shape structure, and installation is equipped on the outer peripheral surface of described 11 one end of central tube
First seal groove 111 of sealing ring 6 delivers the external screw thread and sealing surface that mechanism matches with the connection, in the central tube
The external screw thread matched with the setting self-locking mechanism is respectively equipped on the outer peripheral surface and inner peripheral surface of 11 other ends and for installing
Second seal groove 112 of sealing ring 6, at the middle part of the central tube 11 and close to the periphery of described second seal groove, 112 one end
Face is equipped with outer bulge loop 113 and is arranged on the outer bulge loop 113 for installing the third seal groove 114 of sealing ring 6.
For the underground throttle device of the application before going into the well and setting, locking sealing mechanism is always positioned at the underground throttle device
Within maximum gauge, and the setting self-locking mechanism is set by being compressed axially the locking sealing mechanism realization, therefore this
The underground throttle device of application is when going into the well and the tube wall of oil pipe has gap always, as long as the underground throttle device of the application is in oil pipe
It is interior with appropriate even pace, arbitrarily above can mention or transfer when being hampered carry out unblocking, without the locking sealer
Structure sets movement so as to guarantee to transfer to the position of design, meanwhile, the underground throttle device of the application uses locking ball type structure,
Unfreezing after first unlocking when salvaging, unlocking process is simple and repeatability is high, goes into the well so that the underground throttle device of the application has
Smoothly, setting convenience, sealed reliable, convenient for salvage the advantages that.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the underground throttle device of the embodiment of the present application；
Fig. 2 is the structural schematic diagram of the central tube of the embodiment of the present application；
Fig. 3 is that the structural schematic diagram of mechanism is delivered in the connection of the embodiment of the present application；
Fig. 4 is the structural schematic diagram of the salvaging solution sealing mechanism of the embodiment of the present application；
Fig. 5 is the structural schematic diagram of the casing of the embodiment of the present application；
Fig. 6 is the structural schematic diagram of the trustship of the embodiment of the present application；
Fig. 7 is the structural schematic diagram of the slips support of the embodiment of the present application；
Fig. 8 is the structural schematic diagram of the locking sealing mechanism of the embodiment of the present application；
Fig. 9 is the structural schematic diagram of the sphenoid of the embodiment of the present application；
Figure 10 is the structural schematic diagram of the slips of the embodiment of the present application；
Figure 11 is the structural schematic diagram of the setting self-locking mechanism of the embodiment of the present application；
Figure 12 is the structural schematic diagram of the lock ring care set of the embodiment of the present application；
Figure 13 is the structural schematic diagram of the lock ring of the embodiment of the present application；
Figure 14 is the structural schematic diagram of the filtering throttle mechanism of the embodiment of the present application；
Figure 15 is the structural schematic diagram of the attachment cap of the embodiment of the present application；
Figure 16 is the process schematic of going into the well of the underground throttle device of the embodiment of the present application；
Figure 17 is the setting procedure schematic diagram of the underground throttle device of the embodiment of the present application；
Figure 18 is the salvaging process schematic of the underground throttle device of the embodiment of the present application.
Appended drawing reference
1- connector, 2- shear pin, 3- mention hanging tube, 4- casing, and 5- hangs cap, 6- sealing ring, and 7- mentions link, and 8- deblocking is cut
Nail, 9- lock ball, 10- slips support, 11- central tube, 12- trustship, 13- slips, 14- sphenoid, 15- cartridge, 16- packing element
Support, 17- lock ring support, 18- lock ring, 19- lock ring care set, 20- adjust steady pin, 21- gas nozzle, 22- attachment cap, 23- screen cover, 111-
First seal groove, the second seal groove of 112-, the outer bulge loop of 113-, 114- third seal groove, the first fitting body of 101-, the outer dome of 102-
Ring, the second fitting body of 103-, 301- inner hole upper section, 302- inner hole middle section, 303- inner hole lower section, 401- annular convex platform, 402- circle
Column smooth surface, 403- necking segment, 121- trustship extension diameter section, 122- radial through-hole, 123- trustship ontology, the unidirectional sawtooth of 124- first lock
Button, the first inside diameter of 1001-, the second inside diameter of 1002-, 1003- radial direction shear pin threaded hole, 1004- ring-type lock ball groove,
1005- third inside diameter, the 4th inside diameter of 1006-, 1007- skewed slot, 141- wedge-shaped body, 142- wedge groove, 143- inclination are recessed
Slot, 131- interconnecting piece, 132- tooth, 133- boss, 191- the first care set section, 192- the second care set section, 193- third care set section,
The steady pin hole of 194- first, 181- lock ring ontology, 182- male cone (strobilus masculinus), the unidirectional sawtooth of 183- second lock, 221- first connecting portion,
222- second connecting portion, the steady pin hole of 223- second.
Specific embodiment
The specific embodiment of the application is described with reference to the accompanying drawing.
Herein, "upper", "lower", "front", "rear", "left", "right" etc. are only used for indicating opposite between relevant portion
Positional relationship, and the absolute position of these non-limiting relevant portions.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than indicate significance level and sequence and
Existing premise etc. each other.
Herein, the limitation in " equal ", " identical " etc. and non-critical mathematics and/or geometry meaning also includes
It will be appreciated by those skilled in the art that and the error that the permissions such as makes or uses.
Unless otherwise indicated, numberical range herein not only includes the entire scope in two endpoint, also includes containing
In several subranges therein.
The application provides a kind of underground throttle device, as shown in Figure 1, including central tube 11, at the both ends of the central tube 11
It is respectively equipped with salvaging solution sealing mechanism and setting self-locking mechanism, is solved in the salvaging and is equipped with card between sealing mechanism and setting self-locking mechanism
Determine sealing mechanism, the salvaging solution sealing mechanism includes casing 4, trustship 12, slips support 10 and lock ball 9, and described sleeve pipe 4 is sleeved on institute
It states on central tube 11 and is socketed with one end of the trustship 12, the other end of the trustship 12 and the setting self-locking mechanism limit
Connection, the slips support 10 is sleeved in the trustship 12 and connects with the limit of extension cap 5 being sleeved in described sleeve pipe 4, described
Lock ball 9 is arranged in the slips support 10 by the limit of casing 4 and makes the slips support 10 with the trustship 12 along the center
The direction-locking of 11 axis of pipe, the locking sealing mechanism be sleeved on the side wall of the trustship 12 and respectively with the slips support
10 are connected with the setting self-locking mechanism.The underground throttle device of the application is when go into the well locking setting operation, the set
Pipe 4 be impacted power and move and drive to the direction of the setting self-locking mechanism along the central tube 11 slips support 10 and support
Pipe 12 acts, and the slips support 10 and trustship 12 keep the locking sealing mechanism locking and expand to complete the downhole choke
Device setting simultaneously realizes locking by lock ball 9, and the end of the trustship 12 is protruded into the setting self-locking mechanism and limited and is used for
Guarantee that the locking sealing mechanism reaches and maintains the perfect condition of seal request.
For the underground throttle device of the application before going into the well and setting, locking sealing mechanism is always positioned at the underground throttle device
Within maximum gauge, and the setting self-locking mechanism is set by being compressed axially the locking sealing mechanism realization, therefore this
The underground throttle device of application is when going into the well and the tube wall of oil pipe has gap always, as long as the underground throttle device of the application is in oil pipe
It is interior with appropriate even pace, arbitrarily above can mention or transfer when being hampered carry out unblocking, without the locking sealer
Structure sets movement so as to guarantee to transfer to the position of design, meanwhile, the underground throttle device of the application uses locking ball type structure,
Unfreezing after first unlocking when salvaging, unlocking process is simple and repeatability is high, locking ball type structure manufacture processing and use can
Compared to having advantage outstanding compared with rope claw structure in the prior art in property, so that the downhole choke utensil of the application
Go into the well smooth, setting convenience, sealed reliable, convenient for salvage.
In one embodiment of the application, as shown in Figure 1, the underground throttle device further includes that mechanism, institute are delivered in connection
The one end for stating connection delivery mechanism is connected by described sleeve pipe 4 with the central tube 11, and the another of mechanism is delivered in the connection
End is connected with the delivery tool of steel wire operation machine, and the delivery tool includes bumper jar or weighted lever.It saves the underground of the application
Device is flowed when go into the well locking setting operation, and the underground throttle device is connected to the bumper jar for capableing of jarring downwards
On, then it is connected with the rope socket that the steel wire operation machine connect steel wire and is lifted in shaft mouth anti-blowout pipe, is normally less than etc.
In the speed tripping in of going into the well of 60m/min, the underground throttle device described in normally casing into process need not be close to the side wall of oil pipe, can be certainly
By tripping in, it will not be hampered halfway and set, accelerate decentralization when reaching away from predetermined position certain altitude, reach 250 in lowering velocity
Emergency brake in the case where ± m/min, the underground throttle device is promptly static at this time, and the bumper jar of upper part is in the used of downlink
Property power under the action of hit described sleeve pipe 4, which expand the locking sealing mechanism of the underground throttle device to completing
It is locking to set.
In one embodiment of the application, as shown in Figure 1, the underground throttle device further includes filtering throttle mechanism, institute
State filtering throttle mechanism be arranged in the central tube 11 far from it is described salvage solution sealing mechanism one end end and with it is described it is setting from
Latch mechanism is connected, and the filtering throttle mechanism can automatically begin to carry out the operation of the expenditure and pressure atomization of underground.
Optionally, as shown in Fig. 2, the central tube 11 is latus rectum shape structure, the outer peripheral surface in described 11 one end of central tube
It is equipped with the first seal groove 111 for installing sealing ring 6, for delivering the external screw thread that matches of mechanism and close with the connection
Cover is respectively provided on the outer peripheral surface and inner peripheral surface of 11 other end of central tube and matches with the setting self-locking mechanism
The external screw thread of conjunction and the second seal groove 112 for installing sealing ring 6, at the middle part of the central tube 11 and close to described second
The outer peripheral surface of 112 one end of seal groove is equipped with outer bulge loop 113 and is arranged on the outer bulge loop 113 for installing sealing ring 6
Third seal groove 114.
In the above-described embodiments, as shown in figure 3, connection delivery mechanism includes connector 1, shear pin 2 and mentions hanging tube
3, described one end for mentioning hanging tube 3 is set in described sleeve pipe 4 and is connected with the end of the central tube 11, described to mention hanging tube 3
The other end be fixedly connected by shear pin 2 with one end of the connector 1, the other end of the connector 1 and the steel wire are made
The delivery tool of industry machine is connected.
The connector 1 includes the first fitting body 101 and the second fitting body 103 being connected, and is set at the middle part of the connector 1
There is the evagination annulus 102 salvaged for accident treatment, external screw thread is equipped on the side wall of first fitting body 101 and is used for and institute
The delivery tool for stating steel wire operation machine is connected, and is equipped in second fitting body 103 and matches with the shear pin 2
First radial shear pin hole.The hanging tube 3 that mentions is that outer circle is isometrical and the tubular structure of hollow variable diameter, including inner hole upper section 301, interior
It is radial to be equipped with second matched with the shear pin 2 on the inner hole upper section 301 for hole middle section 302 and inner hole lower section 303
Shear pinhole is equipped with necking down limiting stand on the inner wall in the inner hole middle section 302, sets on the inner wall of the inner hole lower section 303
The sealing for having the internal screw thread for being connected with the end of the central tube 11 and fitting with the side wall of the central tube 11
Face.
In one embodiment of the application, as shown in figure 4, salvaging solution sealing mechanism further includes mentioning link 7 and deblocking
Shear pin 8, the inner peripheral surface for mentioning link 7 are threadedly coupled the link 7 that mentions being fixedly mounted on the set with described sleeve pipe 4
On pipe 4, the outer peripheral surface for mentioning link 7 is equipped with shear pin annular groove, and the side wall of the slips support 10 is arranged in the deblocking shear pin 8
It above and with the shear pin annular groove matches, constitutes described sleeve pipe 4 and the limit of the slips support 10 sets up an organization.
In the above-described embodiments, as shown in figure 5, being equipped with the annular convex platform for receiving to hit in one end of described sleeve pipe 4
401, the other end of described sleeve pipe 4 be equipped with necking segment 403 and with the internal screw thread for mentioning link 7 and matching, in described sleeve pipe 4
The side wall in portion is equipped with cylinder smooth surface 402.
In the above-described embodiments, as shown in fig. 6, the trustship 12 includes the trustship extension diameter section 121 being connected and trustship sheet
Body 123 is equipped with one group for installing the radial through-hole 122 of lock ball 9, in the support on the side wall of the trustship extension diameter section 121
Tube body 123 is equipped with the first unidirectional sawtooth lock 124 far from the outer wall of described 121 one end of trustship extension diameter section, and described
Trustship ontology 123 is equipped with sealing surface far from the inner wall of described 121 one end of trustship extension diameter section.
In the above-described embodiments, as shown in fig. 7, the slips support 10 is the isometrical tubular structure of outer peripheral surface, including it is connected
Logical the first inside diameter 1001, the second inside diameter 1002 and third inside diameter 1005, in the side wall of first inside diameter 1001
It is equipped with the internal screw thread for being connected with the extension cap 5, is uniformly distributed on the side wall of second inside diameter 1002 useful
In the radial shear pin threaded hole 1003 for installing the deblocking shear pin 8, in second inside diameter 1002 and third inside diameter 1005
Between be equipped with cyclic annular lock ball groove 1004 for accommodating the lock ball 9, in the third inside diameter 1005 far from described first
The end of 1001 one end of inside diameter is uniformly distributed that there are three the skewed slot 1007 that is connected with the locking sealing mechanism, the skewed slots
The angle on the inclined-plane of the 1007 stepped and described skewed slots 1007 is equal with the angle of the conical surface of end of the skewed slot 1007.
Optionally, as shown in figure 4, it is cyclic structure that the slips support, which hangs cap 5, the inner peripheral surface that the slips support hangs cap 5 is
Latus rectum, the outer peripheral surface that the slips support hangs cap 5 are equipped with external screw thread and positive stop lug boss for matching with the slips support 10；Institute
Stating and mentioning link 7 is cyclic structure, and the outer peripheral surface for mentioning link 7 is equipped with shear pin annular groove, sets on the inner peripheral surface for mentioning link 7
There is the internal screw thread for matching with casing 4.
In one embodiment of the application, as shown in figure 8, the locking sealing mechanism includes being set in the trustship 12
Slips 13, sphenoid 14 and cartridge 15 on side wall, one end of the slips 13 is connected with the slips support 10, described
The other end of slips 13 and one end of the sphenoid 14 are slidably connected, the other end of the sphenoid 14 and the cartridge
15 one end abuts against, and the other end and the setting self-locking mechanism of the cartridge 15 abut against.
In the above-described embodiments, as shown in figure 9, the sphenoid 14 is cylinder-like structure, including wedge-shaped body 141,
Outer wall of the wedge-shaped body 141 close to described 13 one end of slips is equipped with multiple wedge grooves being obliquely installed to the slips 13
142, in each wedge groove 142 correspondence one slips 13 is installed, the two sides of the wedge groove 142 be equipped with it is described
The inclined-plane of wedge groove 142 inclined groove 143 disposed in parallel, in the wedge-shaped body 141 close to described 15 one end of cartridge
Inner wall be equipped with inner conical surface 144 for protecting the cartridge 15.
In the above-described embodiments, as shown in Figure 10, the skewed slot with the slips support 10 is equipped in one end of the slips 13
1007 interconnecting pieces 131 being connected are equipped with the tooth 132 of multiple horse-tooth-shapeds in the other end of the slips 13, and described
The side wall of the other end two sides of slips 13 is equipped with the symmetrical boss 133 matched with the inclined groove 143 of the sphenoid 14.
Optionally, as shown in figure 8, the axial interface of the cartridge 15 can be " M " shape structure to be conducive to become
Shape sealing.
When go into the well locking setting operation, the impact force of the bumper jar makes multiple the underground throttle device of the application
Slips 13 forms slips group and moves and expand to prevent the underground from saving on the inner wall for being engaged in oil pipe along the sphenoid 14
It is mobile to flow device, and then continues above to mention steel wire, so that cartridge 15 is by compression-expansion and is close to the inner wall of oil pipe to complete seat
Envelope is further continued for pull-up and mentions steel wire, so that the shear pin 2 is sheared giving up to the underground throttle device, finally rises out
The mating connection instrument in the underground of steel wire operation, such as bumper jar etc. complete the setting procedure of the underground throttle device, the underground
Flow controller automatically begins to throttling atomization work.
In one embodiment of the application, as shown in figure 11, the setting self-locking mechanism includes packing element support 16, lock ring support
17, lock ring 18 and lock ring care set 19, the lock ring 18, which is sleeved on the end of the trustship 12 and limits with the trustship 12, to be cooperated,
The lock ring support 17 is sleeved on the outside of the lock ring 18 and is mounted on the inner peripheral surface of described 19 one end of lock ring care set, the glue
Cylinder support 16 is sleeved on the outer peripheral surface screwed connection in the trustship 12 and with described 19 one end of lock ring care set, the lock ring care set 19
The other end matched with the end inner peripheral surface of the central tube 11.
In the above-described embodiments, as shown in figure 12, the lock ring care set 19 is tubular structure, including the first support being connected
Set section 191, the second care set section 192 and third care set section 193, the lock ring support 17 and lock ring 18 are successively sleeved on first support
On the inner peripheral surface for covering section 191, the packing element support 16 is threadedly coupled with the outer peripheral surface of the first care set section 191, second support
Set section 192 and the setting of the central tube 11 interval form the space for accommodating the trustship 12, in the third care set section 193
Outer peripheral surface be equipped with and filtering the throttle mechanism external screw thread and the first steady pin hole 194 that match.
In the above-described embodiments, as shown in figure 13, the lock ring 18 is cyclic structure, including lock ring ontology 181, described
The outer peripheral surface of 181 end of lock ring ontology is equipped with the male cone (strobilus masculinus) 182 matched with the lock ring support 17, in the lock ring ontology
The inner peripheral surface of 181 ends is equipped with the second unidirectional sawtooth lock 183 matched with the described first unidirectional sawtooth lock 124, and
And width opening appropriate is equipped with so that the lock ring 18 has circumferential elasticity along one of bus of the lock ring 18.
Optionally, as shown in figure 11, the packing element support 16 is annular structure, and the outer peripheral surface of the packing element support 16 is to wait directly
Diameter circle, one end of the inner peripheral surface of the packing element support 16 are annulus, the other end be it is expanding and be equipped with for the lock ring care set 19
The internal screw thread matched；The lock ring support 17 is cyclic structure, and the outer peripheral surface of the lock ring support 17 is equal diameter circle, the lock ring
One end of the inner peripheral surface of support 17 is equal diameter circle, and the other end is undergauge circle and forms the conical surface.
In one embodiment of the application, as shown in figure 14, the filtering throttle mechanism includes adjusting steady pin 20, gas nozzle
21, attachment cap 22 and screen cover 23, the screen cover 23 is sleeved on the outer peripheral surface of 11 end of central tube and supports
To limit the gas nozzle 21, one end of the attachment cap 22 is sleeved on the screen cover 23 for the end of the gas nozzle 21
On outer peripheral surface and by the limit of the annular convex platform that is arranged on 22 inner peripheral surface of attachment cap, the other end of the attachment cap 22 with
19 screwed connection of lock ring care set of the self-locking mechanism simultaneously adjusts the steady adjusting of pin 20 fixation by described.
In the above-described embodiments, as shown in figure 15, the attachment cap 22 is annular structure, and first including being connected connects
Socket part 221 and second connecting portion 222 are equipped with the lock ring care set with the setting self-locking mechanism in the first connecting portion 221
The internal screw thread of 19 matching ends is equipped with for installing the steady pin 20 of adjusting on the side wall of the first connecting portion 221
The second steady pin hole 223, the inner peripheral surface of the second connecting portion 222 is less than the inner peripheral surface of the first connecting portion 221, and institute
The end sleeve of screen cover 23 is stated to be clamped in the first connecting portion 221 and with the second connecting portion 222.
Optionally, as shown in figure 14, the outer peripheral surface of the gas nozzle 21 is sealing surface, and the inner peripheral surface of the gas nozzle 21 is both ends
Small through hole with inner cone；The attachment cap 22 is annular structure, outer peripheral surface and inner peripheral surface in one end of the screen cover 23
On be respectively equipped with internal screw thread connection buckle and chime rings for being clamped with the attachment cap 22 also, the screen cover 23
The other end is equipped with multiple gaps for breathing freely, and is equipped at the middle part of the attachment cap 22 for abutting against with the central tube 11
Undergauge annulus.
For the underground throttle device of the application when carrying out replacement gas nozzle salvaging deblocking operation, steel wire operation with normal speed will beat
Fishing device is lowered at a distance of the appropriate height of the underground throttle device, and then quickly transferring the fisher makes itself and the downhole choke
Device collision can catch the underground throttle device, and then above mention steel wire and start bumper jar jarring, so that cutting deblocking shear pin 8 makes
The locking sealing mechanism unseals, and continues above to mention the underground throttle device that steel wire unseals completion and rise to arrive well head, finally again
By staff carry out after maintenance and inspection according to require replacement gas nozzle 21 and again tripping in fulfiling assignment.
The assembling process of the underground throttle device of the application are as follows: described sleeve pipe 4 is mentioned into 3 outer peripheral surface of hanging tube described from lower end cap
On, then the extension cap 5 is sleeved on the outer peripheral surface at the middle part of described sleeve pipe 4 by assembly direction, by the internal screw thread for mentioning link 7
It is connected on the external screw thread of the fishing casing 4, sealing ring 6 is installed in the central tube 11 and coats stop-leak compound, by the center
The lower end inner peripheral surface that pipe 11 passes through described sleeve pipe 4 is connected with the screw thread for mentioning hanging tube 3 and makes sealing surface cooperation sealing；By institute
The lower end (one end of belt lock catch) for stating trustship 12 is inserted into from the upper end of slips support 10 and keeps the radial through-hole 122 of the trustship 12 right
The cyclic annular lock ball groove 1004 at quasi- 10 middle part of slips support, places one in each radial through-hole 122 of the upper end of the trustship 12
A lock ball 9, and lock ball 9 is limited in the cyclic annular lock ball groove 1004 of slips support 10 with stop-leak compound, by slips support 10, trustship 12
It is integrally inserted in the sub-assembly of lock ball 9 from the lower end of central tube 11, adjusts and be inserted in position and make radial shear pin in slips support 10
Threaded hole 1003 is directed at the shear pin annular groove on the link 7, installation deblocking shear pin 8, by 5 external screw thread of extension cap and slips support 10
Internal screw thread be connected；The outer of the trustship 12 is mounted on by the slips 13, sphenoid 14 and cartridge 15 are successively mating
Circumferential surface；The lock ring 18 is sleeved in lock ring support 17 to and is put into the lock ring support 17 first care set section of lock ring care set 19
In 191, the integral assembling after the internal screw thread of the packing element support 16 is connected with the external screw thread of the lock ring care set 19 is in glue institute
The internal screw thread of the bottom of the lock ring care set 19 is connected by the lower end for stating trustship 12 with the internal screw thread of 11 bottom of central tube
It connects, and adjusting position abuts against 16 top of packing element support and the low side of cartridge 15, in the bottom of the central tube 11
It is packed into the gas nozzle 21 the replaceable adjustment of demand of gas well (size of inner hole described in gas nozzle according to), by the screen cover 23 from institute
The top for stating attachment cap 22 passes through and hangs at the second connecting portion 222 of 22 bottom of attachment cap, by 22 upper end of attachment cap
Internal screw thread is connected with the external screw thread of 19 lower end of ring care set and installs the steady pin 20 of adjusting, finally will be under the connector 1
It is mentioned described in the insertion of end at the inner hole upper section 301 of 3 upper end of hanging tube and the shear pin 2 is installed to complete the underground well of the application
The assembling of lower flow controller.
As shown in Figure 16 to Figure 17, the locking setting procedure of going into the well of the underground throttle device of the application is the throwing of steel wire operation
The bumper jar in tool is sent to be clashed on the annular convex platform 401 of described sleeve pipe 4 under the action of inertia, in the link 7
Under the action of lock ball 9, described sleeve pipe 4 is pushed trustship 12, slips support 10 and extension cap 5 to transport downwardly together by downlink is hit
It is dynamic, move downward slips 13 and along the expanding inner wall to be stuck in oil pipe in 14 inclined-plane of sphenoid；Meanwhile the cartridge
15 annular space for being compressed axially and being radially expanded to seal the trustship 12 and oil pipe, due to packing element support 16, lock ring support 17, lock
The setting self-locking mechanism that ring 18 and lock ring care set 19 form is inserted into the trustship 12 in the lock ring care set 19, and described
Can only enter under first unidirectional sawtooth lock 124 and the second unidirectional 183 effect of sawtooth lock can not exit realize it is self-locking, if institute
The perfect condition that cartridge 15 is compressed to seal request not yet is stated, then draws slips group 13 more by above mentioning the connector 1
It is tighter and the cartridge 15 is continued to compress by lock ring care set 19, so that sealability is more and more stronger, reach in pulling force
In the case where designing setting optimum value, the shear pin 2 is sheared, so that underground throttle device realization is given up and completed
It is setting.
In locking setting procedure, the outer peripheral surface of the underground throttle device of the application is less than the inner peripheral surface of oil pipe, and is sitting
Feng Qian, the slips group 13 are contracted within the maximum outer peripheral surface of the underground throttle device, and the cartridge 15 is using pressure
Contracting formula packing element, the annular clearance between oil pipe is sealed by being compressed axially radial dilatation, therefore ensure that the institute before setting
There is component all within the maximum outer peripheral surface of the underground throttle device, it is not in card that any section, which steadily lifts from the top and puts down, in oil pipe
Radial expanding will not occur for the relative displacement of watt group 13 and slips support 10, slips group 13, guarantee the underground throttle device can under
It is put into design position.
In the prior art, the kava structure of existing locking sealing mechanism has self-hanging slips, using self-hanging slips
The flow controller of structure its self-hanging slips during underground is gone into the well vertically is naturally drooped in expansion state, and decentralization is hampered can be with
Automatically it moving up recycling but unfreezing cannot be proposed on the whole, existing locking sealing mechanism generally also uses leather cup type cartridge,
Outer peripheral surface is identical with the inner peripheral surface of oil pipe, and the principle that sets of the flow controller of this structure is exactly to lean in self-hanging slips card main oil pipe
Wall, above mention main body slips continue expansion insertion tube inner wall complete it is locking, sealing be by cup packer throttling generate pressure difference
Leather cup further expansion completion is pushed to set sealing, so the flow controller is cannot to meet close to oil pipe inner peripheral surface in the process of going into the well
Unblocking is proposed in resistance, is above mentioned and being set with regard to locking, design position can not be descended if being hampered.
As shown in figure 18, the salvaging deblocking process of the underground throttle device of the application is to be arrived with normal speed tripping in fisher
At a distance of the appropriate height of the underground throttle device, quickly transfers fisher and hit and catch the annular convex platform of 4 upper end of described sleeve pipe
401, it above proposes steel wire starting and bumper jar and cuts the deblocking shear pin 8, continuing above to mention steel wire makes to mention described in enforcement in described sleeve pipe 4
7 uplink of link simultaneously tangles the extension cap 5, and the lower end of described sleeve pipe 4, which is detached from the 12 upper end Nei Yuan of trustship, makes the axis of the lock ball 9
Face forms annular space to losing locking effect, and continuing above to propose described sleeve pipe 4 makes described to mention link 7 and drag the extension cap 5 and slips
10 uplink of support, 10 uplink of slips support drag 13 uplink of slips, it is exercised on the slips 13 and is fully retracted to solution card position,
Pass through, the symmetrical boss 133 of the slips 13 matches to pull the wedge shape with the inclined groove 143 of the sphenoid 14
14 uplink of body, formation make the restorable space of cartridge 15, so that slips 13 and the complete unfreezing of cartridge 15 are unsealed,
The i.e. described underground throttle device completes deblocking.The necking segment 403 of last described sleeve pipe 4 tangles the inner hole lower section for mentioning hanging tube 3
303 so that it is described mention hanging tube 3 the entire underground throttle device dragged by central tube 11 propose well head, staff is through repairing
According to requiring to replace the gas nozzle 21, tripping in fulfils assignment again after maintenance.
The application preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but the application
It is not limited to the above embodiment and embodiment can also not take off within the knowledge of those skilled in the art
It is made a variety of changes under the premise of from the application design.
Claims (11)
1. a kind of underground throttle device characterized by comprising central tube (11) is set respectively at the both ends of the central tube (11)
There are salvaging solution sealing mechanism and setting self-locking mechanism, is solved in the salvaging and be equipped with locking sealing between sealing mechanism and setting self-locking mechanism
Mechanism, the salvaging solution sealing mechanism include casing (4), trustship (12), slips support (10) and lock ball (9), described sleeve pipe (4) suit
On the central tube (11) and with one end of the trustship (12) be socketed, the other end of the trustship (12) and it is described it is setting from
Latch mechanism limit connection, the slips support (10) be sleeved on the trustship (12) and with the extension that is sleeved on described sleeve pipe (4)
Cap (5) limit connection, the lock ball (9) are arranged on the slips support (10) by casing (4) limit and make the slips support
(10) with the trustship (12) along the direction-locking of the central tube (11) axis, the locking sealing mechanism is sleeved on the support
It manages on the side wall of (12) and is connected respectively with the slips support (10) and the setting self-locking mechanism.
2. underground throttle device according to claim 1, which is characterized in that the underground throttle device further includes connection delivery machine
Structure and filtering throttle mechanism, one end that mechanism is delivered in the connection are connected by described sleeve pipe (4) with the central tube (11),
The other end that mechanism is delivered in the connection is connected with the delivery tool of steel wire operation machine, and the filtering throttle mechanism is arranged in institute
Central tube (11) are stated far from the end for salvaging solution sealing mechanism one end and are connected with the setting self-locking mechanism.
3. underground throttle device according to claim 1, which is characterized in that the salvaging solution sealing mechanism further includes mentioning link
(7) and deblocking shear pin (8), the inner peripheral surface for mentioning link (7) are threadedly coupled to mention link for described with described sleeve pipe (4)
(7) it is fixedly mounted on described sleeve pipe (4), the outer peripheral surface for mentioning link (7) is equipped with shear pin annular groove, the deblocking shear pin
(8) it is arranged on the side wall of the slips support (10) and is matched with the shear pin annular groove, constitutes described sleeve pipe (4) and the card
The position-limit mechanism of Wa Tuo (10).
4. underground throttle device according to claim 3, which is characterized in that the slips support (10) is the isometrical pipe of outer peripheral surface
Shape structure, including in the first inside diameter (1001), the second inside diameter (1002), third inside diameter (1005) and the 4th that are connected
Diameter portion (1006) is equipped with the internal screw thread being connected with extension cap (5), in institute on the side wall of first inside diameter (1001)
State the radial shear pin threaded hole for being evenly distributed on the side wall of the second inside diameter (1002) and installing deblocking shear pin (8)
(1003), the cyclic annular lock ball groove (1004) for accommodating the lock ball (9) is equipped on the inside of the third inside diameter (1005), described the
Four inside diameters (1006) far from described first inside diameter (1001) one end end be uniformly distributed there are three with the locking sealing
The skewed slot (1007) that mechanism is connected.
5. underground throttle device according to claim 1, which is characterized in that the setting self-locking mechanism includes packing element support
(16), lock ring support (17), lock ring (18) and lock ring care set (19), the lock ring (18) are sleeved on the end of the trustship (12) simultaneously
It limits and cooperates with the trustship (12), the lock ring support (17) is sleeved on the outside of the lock ring (18) and is mounted on the lock ring
On the inner peripheral surface of care set (19) one end, the packing element support (16) be sleeved on the trustship (12) and with the lock ring care set (19)
The outer peripheral surface screwed connection of one end, the other end of the lock ring care set (19) and the end inner peripheral surface of the central tube (11) match
It closes.
6. underground throttle device according to claim 5, which is characterized in that the trustship (12) includes trustship extension diameter section
(121) and trustship ontology (123), the radial direction on the side wall of the trustship extension diameter section (121) equipped with one group of installation lock ball (9) are logical
Hole (122) is equipped with the first unidirectional saw on outer wall of the trustship ontology (123) far from described trustship extension diameter section (121) one end
Tooth latches (124), and equipped with close on inner wall of the trustship ontology (123) far from described trustship extension diameter section (121) one end
Cover.
7. underground throttle device according to claim 6, which is characterized in that the lock ring (18) is cyclic structure, including lock
Ring body (181) is equipped with the outer cone matched with the lock ring support (17) on the outer peripheral surface of lock ring ontology (181) end
Face (182) is equipped on the inner peripheral surface of lock ring ontology (181) end and matches with the described first unidirectional sawtooth lock (124)
The unidirectional sawtooth lock (183) of second closed.
8. underground throttle device according to claim 1, which is characterized in that the locking sealing mechanism is described including being set in
Slips (13), sphenoid (14) and cartridge (15) on trustship (12) side wall, one end of the slips (13) and the card
Wa Tuo (10) is connected, and one end of the other end and the sphenoid (14) of the slips (13) is slidably connected, the sphenoid
(14) the other end and the one end of the cartridge (15) abut against, the other end of the cartridge (15) with it is setting self-locking
Mechanism abuts against.
9. underground throttle device according to claim 2, which is characterized in that the connection delivers mechanism and includes connector (1), cuts
Cut pin (2) and mention hanging tube (3), described one end for mentioning hanging tube (3) be set in described sleeve pipe (4) and with the central tube (11)
End be connected, the other end for mentioning hanging tube (3) is fixedly connected by shear pin (2) with one end of the connector (1),
The other end of the connector (1) is connected with the delivery tool of the steel wire operation machine.
10. underground throttle device according to claim 2, which is characterized in that the filtering throttle mechanism includes adjusting steady pin
(20), gas nozzle (21), attachment cap (22) and screen cover (23), gas nozzle (21) setting are described in the central tube (11)
Screen cover (23) be sleeved on the outer peripheral surface of the central tube (11) end and support the end of the gas nozzle (21) to
The gas nozzle (21) are limited, one end of the attachment cap (22) is sleeved on the outer peripheral surface of the screen cover (23) and passes through
The annular convex platform limit being arranged on the attachment cap (22) inner peripheral surface, the other end of the attachment cap (22) and described from lock machine
Lock ring care set (19) screwed connection of structure is simultaneously fixed by steady pin (20) adjusting of the adjusting.
11. underground throttle device according to claim 1, which is characterized in that the central tube (11) is latus rectum shape structure,
The outer peripheral surface of described central tube (11) one end is equipped with the first seal groove (111) of installation sealing ring (6), delivers with the connection
The external screw thread and sealing surface that mechanism matches, be respectively equipped on the outer peripheral surface and inner peripheral surface of the central tube (11) other end with
The external screw thread that the setting self-locking mechanism matches and the second seal groove (112) for installing sealing ring (6), at the center
It manages the middle part of (11) and is equipped with outer bulge loop (113) close to the outer peripheral surface of described second seal groove (112) one end and is arranged and exist
For installing the third seal groove (114) of sealing ring (6) on the outer bulge loop (113).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171970.0A CN109763797B (en) | 2019-03-07 | 2019-03-07 | Underground throttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171970.0A CN109763797B (en) | 2019-03-07 | 2019-03-07 | Underground throttle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109763797A true CN109763797A (en) | 2019-05-17 |
| CN109763797B CN109763797B (en) | 2024-02-23 |
Family
ID=66456778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171970.0A Active CN109763797B (en) | 2019-03-07 | 2019-03-07 | Underground throttle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763797B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN115142807A (en) * | 2022-07-08 | 2022-10-04 | 陕西延长石油(集团)有限责任公司延长气田采气四厂 | Throttle easy to throw and drag |
| CN116696472A (en) * | 2023-07-13 | 2023-09-05 | 山东省煤田地质规划勘察研究院 | Gas storage well head throttling arrangement |
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| CN209818037U (en) * | 2019-03-07 | 2019-12-20 | 陕西航天德林科技集团有限公司 | Underground throttle |
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| US4340116A (en) * | 1980-09-15 | 1982-07-20 | Dresser Industries, Inc. | Slip deployment mechanism |
| US5117906A (en) * | 1991-02-19 | 1992-06-02 | Otis Engineering Corporation | Compact, retrievable packer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN115142807A (en) * | 2022-07-08 | 2022-10-04 | 陕西延长石油(集团)有限责任公司延长气田采气四厂 | Throttle easy to throw and drag |
| CN116696472A (en) * | 2023-07-13 | 2023-09-05 | 山东省煤田地质规划勘察研究院 | Gas storage well head throttling arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109763797B (en) | 2024-02-23 |
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