CN207420519U - Underground throttle device fishing device - Google Patents
Underground throttle device fishing device Download PDFInfo
- Publication number
- CN207420519U CN207420519U CN201721224816.8U CN201721224816U CN207420519U CN 207420519 U CN207420519 U CN 207420519U CN 201721224816 U CN201721224816 U CN 201721224816U CN 207420519 U CN207420519 U CN 207420519U
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- CN
- China
- Prior art keywords
- push rod
- shoulder
- spring
- claw
- limit boss
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model is related to the technical fields of down-hole fishing device, it is a kind of underground throttle device fishing device, it includes top connection, body, jaw components, push rod, piston, the lower end of top connection is fixedly connected with the upper end of body, the lower end of body is fixedly connected with jaw components, piston is arranged in upper shell, and push rod is arranged in body.The utility model reasonable and compact in structure, pass through the ingehious design to jaw components internal structure, apply downward thrust on piston and push rod using hydraulic pressure, it is broken the first shear pin, and then jaw components is made to realize the action for capturing flow controller, flow controller can be firmly captured, improves the success rate of salvaging, has saved salvaging cost；It in the event of card resistance, then need to only continue above to carry the utility model, be broken the second shear pin, jaw components are separated with flow controller at this time, due to can flexibly escape danger when running into card resistance, improve the practicability and security of the utility model.
Description
Technical field
The utility model is related to the technical fields of down-hole fishing device, are a kind of underground throttle device fishing devices.
Background technology
At present, downhole choke technology has become one of low pressure, key technology of low yield gas field development, and flow controller is well
The key device that lower throttling technology is achieved, but underground shakes out, fouling, due to corrosion etc., there are steel wires for part gas well
It salvages that underground throttle device difficulty is big, low success rate of problem, if even if can not achieve salvaging for underground throttle device, may make
It can not implement to steep the measures such as row, speed column, plunger lift into part low pressure water-producing gas well, cause gas well yield low or stop well,
And be finally flow controller to be taken out, it is necessary to kill-job plays the measures such as tubing string or with pressure tubing string, and these measures not only expense
Costliness also there are bit freezing and higher well control safety risk, a kind of salvages that at low cost, success rate is high beats there is presently no no
Fishing combined tool.
The content of the invention
The utility model provides a kind of underground throttle device fishing device, overcomes the deficiency of the above-mentioned prior art, energy
Effectively solve the problems, such as that the method success rate for salvaging flow controller at present is low, it is of high cost to salvage.
The technical solution of the utility model is realized by following measures：A kind of underground throttle device fishing device includes
Top connection, body, jaw components, push rod, piston, top connection and body are all cylindrical, are set on the upper port inner wall of top connection
Thread segment is equipped with, the lower end of top connection is fixedly connected with the upper end of body, and piston is arranged in top connection, on the upper surface of piston
The upper limit boss of evagination is provided with, is provided on the top connection inner wall below upper limit boss corresponding with upper limit boss
Upper shoulder, the first motion gap is provided between the lower face of upper limit boss and the upper surface of upper shoulder, push rod is arranged on
In body, the lower limit boss of evagination is provided on the upper surface of push rod, is set in the inner body wall below lower limit boss
Have with the corresponding lower shoulder of lower limit boss, be provided with second between the lower face of lower limit boss and the upper surface of lower shoulder
Motion gap, the push rod outside downward along lower limit boss lower surface is provided with and the corresponding limiting groove of lower shoulder, along sheet
Be provided on the horizontal circumferencial direction of outside with the corresponding installation annular groove in lower shoulder position, installation annular groove at least set
Put there are two the first through hole for running through lower shoulder, installation annular groove inner sleeve equipped with cricoid tension spring, be both provided in first through hole by
Tension spring is limited in first through hole and continues lock pin of the top pressure on push rod lateral surface, also at least provided with two on lower shoulder
Along the second through hole of horizontal circumferencial direction distribution, the first shear pin of fixed push rod is both provided in the second through hole, push rod
Lower end is extended substantially downward in jaw components, and the baffle ring for preventing jaw components from dropping, claw are fixedly connected on the lower end outer wall of push rod
Component is fixedly connected by the second shear pin being arranged on body with body, is internally provided with and is sleeved in the lower end of body
The first spring on push rod, the first spring are in by compression shape, and one end top pressure of the first spring is on the lower face of lower shoulder, and first
The other end top pressure of spring is provided on the outside of jaw components and is sleeved on jaw components on the upper surface of jaw components
Second spring.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution：
Above-mentioned jaw components include sleeve, master jaw, mounting cylinder and claw, and the upper end of sleeve is inserted into body and passes through
The second shear pin being arranged on body is fixedly connected with body, and the lower end of sleeve and the upper end of master jaw are fixed, along claw
Two claw notches are at least evenly equipped on seat circumferencial direction, claw is arranged in claw notch, one on the lower end inner wall of claw
It is fixed with latch, is provided with the sliding block notch of one section of axial direction on each claw notch on the barrel of square socket, mounting cylinder is sleeved on
The outside of sleeve is circumferentially intervally distributed with card hole corresponding with sliding block notch on mounting cylinder, is both provided in sliding block notch
Slider pin, the medial roof of slider pin is pressed on the outer wall of push rod, is plugged on the outside of slider pin in card hole, below slider pin
Installation gap is provided between sleeve lining and push rod outer wall, is provided in installation gap and is fixedly connected with gear with push rod outer wall
Ring, the upper end top pressure of the first spring is on the lower face of lower shoulder, and the lower end top pressure of the first spring is on the upper surface of sleeve, and
Two spring pockets are mounted in the outside of sleeve, and the upper end top pressure of second spring is on the lower face of body, the lower end top pressure of second spring
On the upper surface of claw.
At least provided with first sealing ring, upper shoulder between the outside of above-mentioned upper limit boss and the inner wall of top connection
Outside and body inner wall between at least provided with second sealing ring, the outside of lower limit boss and the inner wall of body it
Between at least provided with the 3rd sealing ring.
Above-mentioned upper limit boss and upper shoulder all in circular or/and, lower limit boss and lower shoulder are all in annular shape.
Above-mentioned top connection between body with being threadedly coupled.
The utility model reasonable and compact in structure, by the ingehious design to jaw components internal structure, using hydraulic pressure to
Piston is broken the first shear pin, and then jaw components is made to realize crawl flow controller with applying downward thrust on push rod
Action, simple in structure, performance are stablized, and can firmly capture flow controller, and the success rate salvaged is high, is salvaged due to simplifying
Process, therefore saved salvaging cost；In the event of card resistance, it is necessary to which the utility model and salvaged object are separated, then only need
Continue above to carry the utility model, be broken the second shear pin, jaw components are separated with flow controller at this time, due to that can meet
Flexibly escape danger to during card resistance, therefore improve the practicability and security of the utility model.
Description of the drawings
Attached drawing 1 is the main view half section schematic of the best embodiment of the utility model.
Coding in attached drawing is respectively：1 is top connection, and 2 be body, and 3 be push rod, and 4 be piston, and 5 be upper limit boss, 6
It is the first motion gap for upper shoulder, 7,8 be lower limit boss, and 9 be lower shoulder, and 10 be the second motion gap, and 11 is recessed for /V
Slot, 12 be installation annular groove, and 13 be first through hole, and 14 be tension spring, and 15 be lock pin, and 16 be the second through hole, and 17 be the first shear pin,
18 be the first spring, and 19 be second spring, and 20 be sleeve, and 21 be master jaw, and 22 be the second shear pin, and 23 be claw notch,
24 be claw, and 25 be latch, and 26 be sliding block notch, and 27 be slider pin, and 28 be installation gap, and 29 be baffle ring, and 30 be the first sealing
Circle, 31 be the second sealing ring, and 32 be the 3rd sealing ring.
Specific embodiment
The utility model, can technical solution according to the present utility model and actual conditions from the limitation of following embodiments
Determine specific embodiment.
In the utility model, for ease of description, the description of the relative position relation of each component is according to specification
The Butut mode of attached drawing 1 is described, such as：The position relationship of upper and lower, left and right etc. is the Butut according to Figure of description 1
Direction is come definite.
The utility model is further described with reference to embodiment and attached drawing：
As shown in Figure 1, which includes top connection 1, body 2, jaw components, push rod 3, piston
4, top connection 1 and body 2 are all cylindrical, are provided with thread segment on the upper port inner wall of top connection 1, the lower end of top connection 1 with
The upper end of body 2 is fixedly connected, and piston 4 is arranged in top connection 1, and the upper limit that evagination is provided on the upper surface of piston 4 is convex
Platform 5 is provided with and 5 corresponding upper shoulder 6 of upper limit boss, upper limit on 1 inner wall of top connection below upper limit boss 5
The first motion gap 7 is provided between the lower face of boss 5 and the upper surface of upper shoulder 6, push rod 3 is arranged in body 2, push rod
The lower limit boss 8 of evagination is provided on 3 upper surface, is provided on 2 inner wall of body below lower limit boss 8 and lower limit
Position 8 corresponding lower shoulder 9 of boss, the second sliding is provided between the lower face of lower limit boss 8 and the upper surface of lower shoulder 9
Gap 10 is provided with and 9 corresponding limiting groove 11 of lower shoulder, edge along 3 outside of push rod of 8 lower end of lower limit boss downwards
Be provided on the horizontal circumferencial direction of 2 lateral surface of body with 9 position of lower shoulder it is corresponding installation annular groove 12, installation annular groove 12
The interior first through hole 13 for running through lower shoulder 9 at least provided with two is installed and cricoid tension spring 14 is set in annular groove 12, and first is logical
It is both provided with being limited in first through hole 13 by tension spring 14 in hole 13 and continues lock pin 15 of the top pressure on 3 lateral surface of push rod,
The second through hole 16 being also distributed on lower shoulder 9 at least provided with two along horizontal circumferencial direction is both provided in the second through hole 16
First shear pin 17 of fixed push rod 3, the lower end of push rod 3 are extended substantially downward in jaw components, fixed on the lower end outer wall of push rod 3
The baffle ring 29 for preventing jaw components from dropping is connected with, jaw components pass through the second shear pin 22 being arranged on body 2 and this
Body 2 is fixedly connected, and the first spring 18 being sleeved on push rod 3 is internally provided in the lower end of body 2, and the first spring 18 is in be pressed
Contracting shape, one end top pressure of the first spring 18 is on the lower face of lower shoulder 9, and the other end top pressure of the first spring 18 is in jaw components
Upper surface on, the second spring 19 being sleeved on jaw components is provided on the outside of jaw components.
When needing the flow controller in well salvaging well, only the tool string for being connected with the utility model need to be transferred to well
It is interior, using the gravity of tool string, the jaw components of the utility model is made firmly to catch the fishing neck of flow controller, then pass through work
Tool string injection liquid in the utility model improves the internal pressure of the utility model, under pressure the first shear pin
17 fractures, the internal hydraulic pressure of the utility model are acted on piston 4, and moving down for piston 4 will force push rod 3 also to move down together,
The thrust of push rod 3 makes the cone on flow controller generate relative displacement with slip insert, unlocks flow controller, continues above to carry instrument at this time
Flow controller can successfully be salvaged well by string, if for some reason, the utility model occurs after flow controller is caught
Card resistance can not be carried above, it is necessary in time separate the utility model from flow controller, only need appropriate to continue above to put forward this reality at this time
With new, the second shear pin 22 is cut, jaw components will no longer capture flow controller, continue above to carry the utility model
The utility model is successfully successfully recycled to taking-up.The utility model is simple in structure, performance is stablized, and can firmly capture throttling
Device, and the success rate salvaged is high, the process of entire crawl or release flow controller, is completed by its internal mechanism of itself,
It simplifies salvaging process, saved salvaging cost, it is time saving and energy saving, normal construction speed is ensure that, suitable for large-scale promotion.
Above-mentioned underground throttle device fishing device can be made further optimization and/or improvements according to actual needs：
As shown in Figure 1, jaw components include sleeve 20, master jaw 21, mounting cylinder and claw 24, and the upper end of sleeve 20 is inserted
In the body 2 and the second shear pin 22 by being arranged on body 2 is fixedly connected with body 2, the lower end of sleeve 20 and
The upper end of master jaw 21 is fixed, and two claw notches 23 are at least evenly equipped with along 21 circumferencial direction of master jaw, and claw 24 is arranged on
In claw notch 23, latch 25 is integrally fixed on the lower end inner wall of claw 24, the cylinder of square socket 20 on each claw notch 23
The sliding block notch 26 of one section of axial direction is provided on wall, mounting cylinder is sleeved on the outside of sleeve 20, is circumferentially spaced on mounting cylinder
Be distributed with 26 corresponding card hole of sliding block notch, be both provided with slider pin 27, the inside top pressure of slider pin 27 in sliding block notch 26
On the outer wall of push rod 3, the outside of slider pin 27 is plugged in card hole, 20 inner wall of sleeve below slider pin 27 and push rod 3
Installation gap 28 is provided between outer wall, is provided in installation gap 28 and is fixedly connected with baffle ring 29, the first bullet with 3 outer wall of push rod
The upper end top pressure of spring 18 is on the lower face of lower shoulder 9, and the lower end top pressure of the first spring 18 is on the upper surface of sleeve 20, and second
Spring 19 is sleeved on the outside of sleeve 20, and the upper end top pressure of second spring 19 is on the lower face of body 2, under second spring 19
Top pressure is held on the upper surface of claw 24.
The jaw components of the utility model are there are two effect, and one is crawl flow controller, another departs from flow controller.Claw
Component captures the specific work process of flow controller：During the utility model is transferred, the upper surface of flow controller can gradually into
Enter into the bottom of master jaw 21, the inside of jaw components upper clipping claw notch 23 is connected with the inside of master jaw 21, mounted on card
24 its underpart of claw in pawl notch 23 is subject to the top pressure of flow controller, claw 24 can by slider pin 27 along sliding block notch 26 to
Upper movement, and then second spring 19 is compressed, due to moving up and crimp of the flow controller to claw 24 for claw 24 so that set
It can depart from the latch 25 of 24 lower end inside of claw out of claw notch 23, at the same time, for latch on flow controller fishing neck
25 outers hooked, as second spring 19 gradually recovers deformation, can be pressed down against claw 24 completely into in master jaw 21,
Claw 24 is forced to be reset to latch 25 in claw notch 23, latch 25 has just firmly been hooked on fishing neck at this time.
Jaw components depart from the specific work process of flow controller：If for some reason flow controller is caused to be stuck in well
And can not above carry, it is necessary to cancel salvaging plan, then it needs to separate the utility model from flow controller, it is appropriate only to need at this time
Continue above to carry the utility model, when the pulling force above carried reaches the design load of the second shear pin 22, the second shear pin 22 is disconnected
It splitting, the first spring 18 meeting abrupt release elastic force in compressive state, the pressure of the first spring 18 can force sliding sleeve to move down originally,
As soon as latch 25 just has a section axially opposing gap between claw notch 23 at this time, master jaw 21 can not again limit latch 25 at this time
It is scheduled in claw notch 23, claw 24 cannot keep tightening, the state for holding flow controller, slightly lift, claw 24 and latch 25
It will depart from out of claw notch 23, no longer capture flow controller, persistently lifting tool string can successfully recycle at well head
The utility model, then by thinking that other methods pull the flow controller being trapped in well out.
After being all broken due to the first shear pin 17 and the second shear pin 22, entire jaw components will be with push rod 3, sheet
Body 2 completely disengages, if be not any limitation as, entire jaw components will be trapped in well together with flow controller, baffle ring 29
The generation for being just that of avoiding this situation is set, and after the fracture of the second shear pin 22, the position of baffle ring 29 is exactly the downlink of sliding block
The limit, the baffle ring 29 being fixed on push rod 3 is by limiting slider pin 27, it is possible to avoid jaw components stagnant together with flow controller
It stays in well.The ingehious design of jaw components internal structure not only ensure that the success rate of jaw components crawl flow controller, but also can be
Flexibly escape danger when running into card resistance, improve the practicability and security of the utility model.
As shown in Figure 1, it is first close at least provided with one between the inner wall of the outside of upper limit boss 5 and top connection 1
Seal 30, at least provided with second sealing ring 31 between the outside of upper shoulder 6 and the inner wall of body 2, lower limit boss 8
At least provided with the 3rd sealing ring 32 between the inner wall of outside and body 2.First sealing ring 30, the second sealing ring 31,
The setting of three sealing rings 32 can increase the sealing intensity of the utility model, ensure seal when the utility model builds the pressure, make
The utility model can successfully cut the first shear pin 17.
As shown in Figure 1, upper limit boss 5 and upper shoulder 6 all in circular or/and, lower limit boss 8 and lower shoulder 9
All in annular shape.It can so make upper limit boss 5 and upper shoulder 6, lower limit boss 8 and the stress of 9 contact site of lower shoulder equal
It is even, the service life of itself is extended, the circular sealing being also beneficial between end face, has ensured the suitable of the process of building the pressure indirectly in addition
Profit is realized.
As shown in Figure 1, it is to be threadedly coupled between top connection 1 and body 2.So convenient for that will dismantle, later period maintenance is facilitated
Process.
More than technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and optimal implementation
Effect can increase and decrease non-essential technical characteristic, to meet the needs of different situations according to actual needs.
The use process of the best embodiment of the utility model：
Preparation before step 1) salvaging：
Before constructing at the scene, the size of the utility model should select it is consistent with the gas well restriction size being salvaged,
Usually enter with together with the tool string of other instruments composition in well, it, need to be under due to needing to reach certain pump pressure during operation
When entering tool string, pouring valve fluid injection into coiled tubing on well is first opened, when there is liquid to be flowed out from pouring valve liquid injection hole,
It represents to fill with liquid in coiled tubing, closes pouring valve at this time.
Step 2) puts into fishing tool and captures flow controller：
The tool string for being connected with the utility model is transferred in well, after this utility model reaches the top of flow controller, soon
Speed decentralization tool string, then slowly above carries tool string, if upper lifting force at this time is more than the suspending weight of tool string itself, illustrates this
Utility model has caught the fishing neck of flow controller.
The specific work process of the utility model in the process：During the utility model is transferred, flow controller
Upper surface can be progressed into the bottom of master jaw 21, the inside of jaw components upper clipping claw notch 23 and the inside of master jaw 21
Connection, claw its underpart in claw notch 23 are subject to the top pressure of flow controller, claw 24 can by slider pin 27 along
Sliding block notch 26 moves up, and then compresses second spring 19, due to moving up and extruding of the flow controller to claw 24 for claw 24
Deformation so that being arranged on the latch 25 of 24 lower end inside of claw can depart from out of claw notch 23, and at the same time, flow controller is salvaged
It, can be to as second spring 19 gradually recovers deformation for the outer that latch 25 hooks completely into in master jaw 21 on neck
Lower extruding claw 24, forces claw 24 to be reset to latch 25 in claw notch 23, latch 25 is just firmly hooked at this time
On fishing neck.
Step 3) unlocks flow controller：
After confirming that the utility model grabs flow controller, hydraulic pressure is continuously applied into tool string, is made in the utility model
Pressure at piston 4 is stepped up, until the first shear pin 17 is broken, piston 4 can promote the downlink together of push rod 3 at this time, living
The distance for filling in 4 downlinks is the length of the first motion gap 7, and the Bottom Runby of push rod 3 is the length of the second motion gap 10, works as work
When plug 4 is come downwards at upper shoulder 6, the upper limit boss 5 on piston 4 is limited by upper shoulder 6,8 quilt of lower limit boss on push rod 3
Lower shoulder 9 limits, and during 3 downlink of push rod, the thrust of push rod 3 forces the cone on flow controller to be generated relatively with slip insert
Displacement unlocks flow controller, in the process, lock pin 15 under the action of tension spring 14 top pressure in the bottom of limiting groove 11 and card
Firmly push rod 3 make push rod 3 be maintained at this position of minimum point, flow controller are made to be always maintained at released state.
Bailing takes flow controller in step 4)：
Tool string can be above carried after unlock flow controller, flow controller is salvaged into well, if causing to save for some reason
Stream device is stuck in well and can not above carry, it is necessary to cancel salvaging plan, then needs to separate the utility model from flow controller, this
When only need it is appropriate continue above to carry the utility model, when the pulling force above carried reaches the design load of the second shear pin 22,
Two shear pins 22 are broken, originally the first spring 18 meeting abrupt release elastic force in compressive state, the pressure of the first spring 18
Sliding sleeve can be forced to move down, as soon as latch 25 just has a section axially opposing gap between claw notch 23 at this time, master jaw 21 at this time
Latch 25 can not be limited in claw notch 23 again, claw 24 cannot keep tightening, the state for holding flow controller, slightly carry
It draws, claw 24 and latch 25 will depart from out of claw notch 23, no longer capture flow controller, and persistently lifting tool string can be
The utility model is successfully recycled at well head, then by thinking that other methods pull the flow controller being trapped in well out.
Claims (8)
1. a kind of underground throttle device fishing device, it is characterised in that including top connection, body, jaw components, push rod, piston, on
Connector and body are all cylindrical, are provided with thread segment on the upper port inner wall of top connection, the lower end of top connection and body it is upper
End is fixedly connected, and piston is arranged in top connection, and the upper limit boss of evagination is provided on the upper surface of piston, convex in upper limit
Be provided on top connection inner wall below platform with the corresponding upper shoulder of upper limit boss, the lower face of upper limit boss is with appearing on the stage
The first motion gap is provided between the upper surface of shoulder, push rod is arranged in body, and evagination is provided on the upper surface of push rod
Lower limit boss is provided with and the corresponding lower shoulder of lower limit boss, lower limit in the inner body wall below lower limit boss
The second motion gap is provided between the position lower face of boss and the upper surface of lower shoulder, downward along lower limit boss lower surface
Be provided on the outside of push rod with the corresponding limiting groove of lower shoulder, be provided with along the horizontal circumferencial direction in outer body face under
The corresponding installation annular groove in shoulder position, the first through hole for running through lower shoulder at least provided with two in installation annular groove, installation
Cricoid tension spring is set in annular groove, is both provided with being limited in first through hole and continued by tension spring top pressure in first through hole pushing away
Lock pin on bar lateral surface, the second through hole being also distributed on lower shoulder at least provided with two along horizontal circumferencial direction, second
The first shear pin of fixed push rod is both provided in through hole, the lower end of push rod is extended substantially downward in jaw components, the lower end of push rod
It is fixedly connected with the baffle ring for preventing jaw components from dropping on outer wall, jaw components pass through the second shear pin for being arranged on body
It is fixedly connected with body, the first spring being sleeved on push rod is internally provided in the lower end of body, the first spring is in be compressed
Shape, one end top pressure of the first spring is on the lower face of lower shoulder, and the other end top pressure of the first spring is in the upper end of jaw components
On face, the second spring being sleeved on jaw components is provided on the outside of jaw components.
2. underground throttle device fishing device according to claim 1, it is characterised in that jaw components include sleeve, claw
Seat, mounting cylinder and claw, the upper end of sleeve is inserted into body and the second shear pin and body by being arranged on body
It is fixedly connected, the lower end of sleeve and the upper end of master jaw are fixed, and two claws are at least evenly equipped with along master jaw circumferencial direction and are lacked
Mouthful, claw is arranged in claw notch, is integrally fixed with latch on the lower end inner wall of claw, square socket on each claw notch
The sliding block notch of one section of axial direction is provided on barrel, mounting cylinder is sleeved on the outside of sleeve, and circumferentially interval is divided on mounting cylinder
Card hole corresponding with sliding block notch is furnished with, slider pin is both provided in sliding block notch, the medial roof of slider pin is pressed in the outer of push rod
It on wall, is plugged on the outside of slider pin in card hole, installation is provided between the sleeve lining and push rod outer wall below slider pin
Gap is provided in installation gap and baffle ring is fixedly connected with push rod outer wall, and the upper end top pressure of the first spring is under lower shoulder
On end face, the lower end top pressure of the first spring is on the upper surface of sleeve, and second spring is sleeved on the outside of sleeve, second spring
Upper end top pressure is on the lower face of body, and the lower end top pressure of second spring is on the upper surface of claw.
3. underground throttle device fishing device according to claim 1 or 2, it is characterised in that the outside of upper limit boss with it is upper
At least provided with first sealing ring between the inner wall of connector, between the outside of upper shoulder and the inner wall of body at least provided with
One the second sealing ring, at least provided with the 3rd sealing ring between the outside of lower limit boss and the inner wall of body.
4. underground throttle device fishing device according to claim 1 or 2, it is characterised in that upper limit boss and upper shoulder are all
Or/and, lower limit boss and lower shoulder are all in annular shape in annular shape.
5. underground throttle device fishing device according to claim 3, it is characterised in that upper limit boss and upper shoulder are all in
Annular shape or/and, lower limit boss and lower shoulder are all in annular shape.
6. according to the underground throttle device fishing device described in claim 1 or 2 or 5, it is characterised in that be between top connection and body
It is threadedly coupled.
7. underground throttle device fishing device according to claim 3, it is characterised in that connect between top connection and body for screw thread
It connects.
8. underground throttle device fishing device according to claim 4, it is characterised in that connect between top connection and body for screw thread
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224816.8U CN207420519U (en) | 2017-09-22 | 2017-09-22 | Underground throttle device fishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224816.8U CN207420519U (en) | 2017-09-22 | 2017-09-22 | Underground throttle device fishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420519U true CN207420519U (en) | 2018-05-29 |
Family
ID=62313758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721224816.8U Withdrawn - After Issue CN207420519U (en) | 2017-09-22 | 2017-09-22 | Underground throttle device fishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420519U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780862A (en) * | 2017-09-22 | 2018-03-09 | 中国石油集团西部钻探工程有限公司 | Underground throttle device fishing device |
| CN110331955A (en) * | 2019-07-17 | 2019-10-15 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing releasable cable fishing tool and its application method |
| CN112943143A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Hydraulic salvaging pipe column and salvaging method for coiled tubing of downhole choke |
-
2017
- 2017-09-22 CN CN201721224816.8U patent/CN207420519U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780862A (en) * | 2017-09-22 | 2018-03-09 | 中国石油集团西部钻探工程有限公司 | Underground throttle device fishing device |
| CN110331955A (en) * | 2019-07-17 | 2019-10-15 | 中国石油集团渤海钻探工程有限公司 | A kind of coiled tubing releasable cable fishing tool and its application method |
| CN110331955B (en) * | 2019-07-17 | 2021-05-11 | 中国石油集团渤海钻探工程有限公司 | Releasable cable fishing tool for coiled tubing and using method thereof |
| CN112943143A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Hydraulic salvaging pipe column and salvaging method for coiled tubing of downhole choke |
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