CN106761521A - A kind of mechanical throttle device fishing tool and its operating method - Google Patents
A kind of mechanical throttle device fishing tool and its operating method Download PDFInfo
- Publication number
- CN106761521A CN106761521A CN201611206239.XA CN201611206239A CN106761521A CN 106761521 A CN106761521 A CN 106761521A CN 201611206239 A CN201611206239 A CN 201611206239A CN 106761521 A CN106761521 A CN 106761521A
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- China
- Prior art keywords
- control
- rod
- fishing tool
- nut
- fixed cover
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
Abstract
The invention discloses a kind of mechanical throttle device fishing tool and its operating method,Including salvaging mechanism,Salvaging mechanism upper end is connected with control linkage and jarring linkage in turn,Jarring linkage includes jar stem and outer barrel,Jar stem upper end connects top connection,Jar stem outside is cased with nut,Jar stem Basolateral is provided with boss,Jar stem is placed in outer barrel,And nut is connected with outer barrel upper end inner side,Inner cylinder lower end is inserted with shear pin,And shear pin is located at jar stem lower section,Control linkage includes control-rod,Fixed cover and connecting seat,Fixed set upper side is connected to inner cylinder lower end outside,Fixed cover lower end connects connecting seat,Fixed cover inner side is provided with limited step,Control-rod is placed in the annular space that fixed cover and connecting seat are formed,Control-rod top is connected with nut,And nut is placed in outer barrel,The invention solves the problems, such as that existing underground throttle device fishing success ratio is not high,Can meet safe and reliable during gas field underground throttle device is salvaged,The requirement of low cost.
Description
Technical field
The present invention relates to underground operation tool, and in particular to a kind of mechanical throttle device fishing tool and its operating method.
Background technology
At present, downhole choke technology is made to have turned into one of low pressure, key technology of low yield gas field development, and gas well is gone into operation the initial stage
It is commonly used, with low pressure collection critical function.Can reduce low pressure, gas stringer on the ground of initial stage of development with expense up to millions of
Unit, is low pressure, the important means of low yield gas field economical and effective exploitation.Therefore obtained extensively at low pressure, low yield gas field development initial stage
Using.
But shaked out due to underground, fouling, the reason such as corrosion, part well exist steel wire salvaging underground throttle device difficulty it is big, into
The low problem of power.The timely salvaging of underground throttle device can not be such as realized, being then likely to result in part low pressure water-producing gas well cannot be real
Bubble row, the water pumping gas production measure such as speed tubing string, plunger lift are applied, causes gas well to yield poorly or stop well.And be finally by flow controller
Take out, it is necessary to kill-job plays the measures such as tubing string or with pressure tubing string, and these measures not only somewhat expensive, also exist bit freezing and
Well control safety risk higher.Therefore, it is badly in need of a kind of deblocking reliability, give up reliable low cost, high reliability in production scene
Underground restrictor fishing tool.
The content of the invention
The purpose of the present invention is to overcome prior art high cost and fishing success ratio problem not high.
Therefore, the invention provides a kind of mechanical throttle device fishing tool and its operating method, including salvaging mechanism, its
It is characterised by：The salvaging mechanism upper end is connected with control linkage and jarring linkage in turn, and the jarring linkage includes
Jar stem and outer barrel, the jar stem upper end connect top connection, and jar stem outside is cased with nut, and jar stem Basolateral is provided with
Boss, jar stem is placed in outer barrel, and nut is connected with outer barrel upper end inner side, and the inner cylinder lower end is inserted with shear pin, and cuts
Pin is cut positioned at jar stem lower section, the control linkage includes control-rod, fixed cover and connecting seat, and the fixed set upper side connects
Inner cylinder lower end outside is connected to, fixed cover lower end connection connecting seat, fixed cover inner side is provided with limited step, and the control-rod is placed in solid
In the annular space that fixed set and connecting seat are formed, control-rod top is connected with nut, and nut is placed in outer barrel.
The side wall of the outer barrel is provided with passage.
The fixed cover is provided with peep hole, when shear pin is not cut, the spiral shell on the position alignment control-rod of peep hole
Line lower end.
Spacer sleeve, spacer sleeve inside connection circlip, institute are embedded between the limited step and connecting seat of the fixed cover
Control-rod is stated to be placed in jump ring, and control-rod top is provided with screw thread；
Or the spacer sleeve inwall is provided with flexible step, the control-rod top is provided with back taper screw thread.
The salvaging mechanism includes spring, stay tube, spacer ring, mandrel, safe shear pin, Rectangular Spring, contiguous block, card
Pawl, locking set, the stay tube and mandrel are connected to the outside and inner side of connecting seat lower end, and mandrel is placed on outside control-rod bottom
, there are spring and spacer ring in side between the mandrel and stay tube, spacer ring is fixed with mandrel by safe shear pin, and spring is compressed to be put
Between connecting seat and spacer ring, spacer ring outside is cased with Rectangular Spring, and Rectangular Spring is located at stay tube lower section, and mandrel lower end outside has
Limited step, is equipped with contiguous block on limited step, space is left between contiguous block and spacer ring, and contiguous block outside is provided with projection, blocks
Pawl upper end is provided with circular hole, and the projection of contiguous block is placed in the circular hole of claw, and claw is placed in Rectangular Spring lower section, and claw is embedded in locking
In set.
The top connection is fixed with jar stem by pin, and the nut is fixed with outer barrel by pin, the fixed cover
Fixed by pin with outer barrel and connecting seat respectively, the connecting seat is fixed with mandrel and stay tube by pin respectively.
A kind of operating method of mechanical throttle device fishing tool, comprises the following steps：
Step 1）Assembling fishing tool：Jarring linkage, control linkage and salvaging mechanism are sequentially connected, composition salvages work
Tool；
Step 2）Input fishing tool：By under steel wire or well logging armored cable just fishing tool lower going-into-well, reaching throttling
Behind device top, fishing tool is quickly transferred, then slowly above carry fishing tool, when now upper lifting force is more than suspending weight now,
Illustrate that fishing tool has caught flow controller fishing neck；
Step 3）Deblocking flow controller：After fishing tool catches flow controller fishing neck, above carry fishing tool and quickly transfer, jar stem
Cut shear pin to move down, impact nut, nut and control-rod move down, be repeated and raise and decentralize action, due to shake
Hit bar Basolateral and be provided with boss, boss is stopped that jar stem is moved up and down in outer barrel by nut, nut and control-rod are received
Impact to jar stem is moved down, and because fixed cover inner side is provided with limited step, nut and control-rod are moved in fixed cover
The position of limited step no longer move down, control-rod compression throttling device center-pole forces flow controller packing element to unseal；
Step 4）Fishing tool is above carried i.e. it is proposed that flow controller.
The step 3）The operation of middle control-rod has one-way, when jar stem impulsive control bar is moved down, on control-rod
Screw thread is stuck in jump ring, and after jar stem is up, control-rod can not go up shifting；
Or when jar stem impulsive control bar is moved down, the back taper screw thread on control-rod is stuck in the telescopic platform on spacer sleeve inwall
Rank, after jar stem is up, control-rod can not go up shifting.
The step 3）In when flow controller unseal failure when, by upward jarring or downward jarring, give up so that safety scissors
Pin disconnection is cut, spring force release, the elastic force of the elastic force more than Rectangular Spring of spring, spacer ring is moved down, and jarring contiguous block is forced
Claw departs from locking set, and claw is opened, and unclamps flow controller fishing neck, now can be taken off fishing tool.
Beneficial effects of the present invention：
（1）This mechanical throttle device fishing tool of the invention and its operating method simple structure, operating method are easy, pass through
Two-way the giving up that upward jarring is given up or jarring downwards is given up solves the problems, such as that existing underground throttle device fishing success ratio is not high,
Safe and reliable, the inexpensive fishing operation and cost-effectiveness requirement required during gas field underground throttle device is salvaged can be met.
（2）The operating method of this mechanical throttle device fishing tool of the invention is led to when flow controller unseals failure
Upward jarring or downward jarring are crossed, is given up so that shear pin disconnects, spring force release, the elastic force of spring is more than rectangle bullet
The elastic force of spring, spacer ring is moved down, jarring contiguous block, forces claw to depart from locking set, and claw is opened, and unclamps flow controller fishing neck, this
When can be taken off fishing tool, reclaim easily and thoroughly, it is to avoid after flow controller salvages failure, it is follow-up that fishing tool can take out influence
Operation.
（3）This mechanical throttle device fishing tool of the invention is provided with passage by the side wall of outer barrel, it is to avoid
Instrument builds the pressure in the process of running.
（4）This mechanical throttle device fishing tool of the invention on fixed cover by being provided with peep hole, shear pin
When not cutting, the threaded lower end on the position alignment control-rod of peep hole can observe the lower pan position of control-rod from peep hole,
It is easy to checking tool situation, meanwhile, peep hole also has ventilative effect, it is to avoid build the pressure, it is ensured that salvaging process is normally carried out.
（5）This mechanical throttle device fishing tool of the invention is by between the limited step and connecting seat of fixed cover
Spacer sleeve is embedded with, the connection circlip inside spacer sleeve, control-rod is placed in jump ring, and control-rod top is provided with screw thread, deblocking section
During stream device, nut and control-rod are subject to the impact of jar stem to move down, and the screw thread on control-rod is stuck in jump ring, works as jar stem
Up rear control-rod can not be up, it is ensured that the one-way of control-rod operation, it is to avoid control-rod moves landing and causes to salvage and fails.
（6）This mechanical throttle device fishing tool of the invention by being provided with flexible step on spacer sleeve inwall,
Control-rod top is provided with back taper screw thread, and during deblocking flow controller, the back taper screw thread above control-rod is stuck on spacer sleeve inwall
Flexible step, control-rod can not be up after jar stem is up, it is ensured that control-rod operation one-way, it is to avoid control-rod move slide
Fall to causing to salvage and fail.
（7）This mechanical throttle device fishing tool of the invention on the inside of fixed cover by being provided with limited step, nut
The position that the limited step in fixed cover is moved to control-rod no longer moves down, it is to avoid control-rod is fallen into well, influence well in its
He works.
（8）This mechanical throttle device fishing tool salvaging mechanism of the invention is used to capture flow controller, mandrel and stay tube
It is connected with connecting seat respectively, salvaging mechanism is integrally formed with hydraulic mechanism, spacer ring is placed between mandrel and stay tube, and spacer ring and core
Axle is fixed by shear pin, space is left between spacer ring and contiguous block, when fishing tool is transferred, when claw touches flow controller
Fishing neck, the thrust that claw is subject to flow controller upward is moved up, and can be avoided because of impulsive force too by the buffering of Rectangular Spring
Instrument is damaged greatly, claw and contiguous block are above moved together, are no longer moved when contiguous block encounters spacer ring, and now claw is subject to top
Thrust block flow controller fishing neck, complete grasping movement, this simple structure, success rate is higher.
（9）This mechanical throttle device fishing tool of the invention is fixed with jar stem by top connection by pin,
Fixed by pin with outer barrel in nut, fixed by pin with outer barrel and connecting seat respectively in fixed cover, in connecting seat difference
Fixed by pin with mandrel and stay tube, connect structure reliably secure.
Brief description of the drawings
Fig. 1 is mechanical throttle device fishing tool structural representation of the invention；
Fig. 2 is that back taper screw thread is stuck in spacer sleeve inwall and has the schematic diagram of flexible step on control-rod of the present invention；
Fig. 3 is the structural representation that spacer sleeve inwall of the present invention is provided with flexible step.
Brief description of the drawings：1st, top connection；2nd, passage；3rd, jar stem；4th, nut；5th, shear pin；6th, outer barrel；7th, observe
Hole；8th, nut；9th, control-rod；10th, fixed cover；11st, spacer sleeve；12nd, jump ring；13rd, connecting seat；14th, spring；15th, stay tube；16、
Spacer ring；17th, mandrel；18th, safe shear pin；19th, Rectangular Spring；20th, contiguous block；21st, claw；22nd, locking set.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Embodiment 1：
In order to overcome prior art high cost and fishing success ratio problem not high, present embodiments provide it is a kind of as shown in Figure 1
Mechanical throttle device fishing tool, the salvaging mechanism upper end be connected with turn control linkage and jarring linkage, it is described
Jarring linkage includes jar stem 3 and outer barrel 6, and the connection top connection 1 of the upper end of the jar stem 3 is cased with nut on the outside of jar stem 3
4, the Basolateral of jar stem 3 is provided with boss, and jar stem 3 is placed in outer barrel 6, and nut 4 is connected with the upper end of outer barrel 6 inner side, described
The lower end of inner cylinder 6 is inserted with shear pin 5, and shear pin 5 is located at the lower section of jar stem 3, the control linkage include control-rod 9,
Fixed cover 10 and connecting seat 13, the upper end of the fixed cover 10 are connected to the lower end outside of inner cylinder 6, the lower end of fixed cover 10 connection connecting seat
13, the inner side of fixed cover 10 is provided with limited step, and the control-rod 9 is placed in the annular space that fixed cover 10 and connecting seat 13 are formed, control
The top of bar processed 9 is connected with nut 8, and nut 8 is placed in outer barrel 6.
The operating method of this mechanical throttle device fishing tool of the invention, comprises the following steps：
Step 1）Assembling fishing tool：Jarring linkage, control linkage and salvaging mechanism are sequentially connected, composition salvages work
Tool；
Step 2）Input fishing tool：By under steel wire or well logging armored cable just fishing tool lower going-into-well, reaching throttling
Behind device top, fishing tool is quickly transferred, then slowly above carry fishing tool, when now upper lifting force is more than suspending weight now,
Illustrate that fishing tool has caught flow controller fishing neck；
Step 3）Deblocking flow controller：After fishing tool catches flow controller fishing neck, above carry fishing tool and quickly transfer, jar stem
3 cutting shear pins 5 are moved down, and impact nut 8, and nut 8 and control-rod 9 move down, downward nut 8 be repeated carry and under
Action is put, because the Basolateral of jar stem 3 is provided with boss, boss is subject to stopping for nut 4, and jar stem 3 is moved down on outer barrel 6 is interior
Dynamic, nut 8 and control-rod 9 are subject to the impact of jar stem 3 to move down, because the inner side of fixed cover 10 is provided with limited step, nut 8
The position for moving to the limited step in fixed cover 10 with control-rod 9 is no longer moved down, and the compression throttling device center-pole of control-rod 9 is forced
Flow controller packing element is unsealed；
Step 4）Fishing tool is above carried i.e. it is proposed that flow controller.
This mechanical throttle device fishing tool simple structure of the invention, operating method is easy, is lost by upward jarring
Two-way the giving up that hand or downward jarring are given up solves the problems, such as that existing underground throttle device fishing success ratio is not high, can meet gas field
Safe and reliable, the inexpensive fishing operation and cost-effectiveness requirement that underground throttle device is required in salvaging.
Embodiment 2：
On the basis of embodiment 1, a kind of mechanical throttle device fishing tool as shown in Figure 1 is present embodiments provided, in order to
Instrument is avoided to build the pressure in the process of running, the side wall of the outer barrel 6 is provided with passage 2.
Further, the fixed cover 10 is provided with peep hole 7, when shear pin 5 is not cut, the position pair of peep hole 7
Threaded lower end on quasi- control-rod 9.The lower pan position of control-rod can be observed from peep hole 7, is easy to checking tool situation, together
When, peep hole 7 also has ventilative effect, it is ensured that salvaging process is normally carried out.
Embodiment 3：
On the basis of embodiment 2, a kind of mechanical throttle device fishing tool as shown in Figure 1 is present embodiments provided, it is described
Spacer sleeve 11 is embedded between the limited step and connecting seat 13 of fixed cover 10, the inside connection circlip 12 of the spacer sleeve 11 is described
Control-rod 9 is placed in jump ring 12, and the top of control-rod 9 is provided with screw thread；
Or the inwall of spacer sleeve 11 is provided with flexible step, the top of the control-rod 9 is provided with back taper screw thread.
During deblocking flow controller, nut 8 and control-rod 9 are subject to the impact of jar stem 3 to move down, the screw thread on control-rod 9
Be stuck in jump ring 12, control-rod 9 can not be up after jar stem 3 is up, or the top of control-rod 9 back taper screw thread be stuck between
Flexible step on the inwall of spacer 11, control-rod 9 can not be up after jar stem 3 is up, it is ensured that it is unidirectional that control-rod 9 runs
Property, it is to avoid control-rod 9 moves landing and causes to salvage and fails, because the inner side of fixed cover 10 is provided with limited step, nut 8 and control-rod 9
The position for moving to the limited step in fixed cover 10 no longer moves down, it is to avoid control-rod is fallen into well, other work in influence well.
Embodiment 4：
On the basis of embodiment 3, a kind of mechanical throttle device fishing tool as shown in Figure 1 is present embodiments provided, it is described
Salvaging mechanism includes spring 14, stay tube 15, spacer ring 16, mandrel 17, safe shear pin 18, Rectangular Spring 19, contiguous block 20, card
Pawl 21, locking set 22, the stay tube 15 and mandrel 17 are connected to the outside and inner side of the lower end of connecting seat 13, and mandrel 17 is placed on
The lower outside of control-rod 9, there is spring 14 and spacer ring 16 between the mandrel 17 and stay tube 15, spacer ring 16 is with mandrel 17 by safety
Shear pin 18 is fixed, and spring 14 is placed between connecting seat 13 and spacer ring 16 by compression, and the outside of spacer ring 16 is cased with Rectangular Spring 19,
And Rectangular Spring 19 is located at the lower section of stay tube 15, the lower end outside limited location step of mandrel 17 is equipped with contiguous block 20 on limited step, even
Connect and space is left between block 20 and spacer ring 16, the outside of contiguous block 20 is provided with projection, and the upper end of claw 21 is provided with circular hole, contiguous block 20
Projection is placed in the circular hole of claw 21, and claw 21 is placed in the lower section of Rectangular Spring 19, and claw 21 is embedded in locking set 22.
Salvaging mechanism is used to capture flow controller, and mandrel 17 and stay tube 15 are connected with connecting seat 13 respectively, salvaging mechanism and liquid
Press is integrally constituted, and spacer ring 16 is placed between mandrel 17 and stay tube 15, and spacer ring 16 passes through safe shear pin with mandrel 17
18 are fixed, and space is left between spacer ring 16 and contiguous block 20, when fishing tool is transferred, are salvaged when claw 21 touches flow controller
Neck, the thrust that claw 21 is subject to flow controller upward is moved up, and can be avoided because of impulsive force too by the buffering of Rectangular Spring 19
Instrument is damaged greatly, claw 21 and contiguous block 20 are above moved together, are no longer moved when contiguous block 20 encounters spacer ring 16, now claw
Flow controller fishing neck is blocked by the thrust of top, grasping movement is completed, this simple structure, success rate is higher.
Further, when flow controller unseals failure, by upward jarring or downward jarring, give up so that safety shearing
Pin 18 is disconnected, the release of the elastic force of spring 14, and the elastic force of the elastic force more than Rectangular Spring 19 of spring 14, spacer ring 16 is moved down, and jarring connects
Block 20 is connect, forces claw 21 to depart from locking set 22, claw 21 is opened, and unclamps flow controller fishing neck, now can be taken off salvaging work
Tool, the fishing tool reclaims convenient, it is to avoid after flow controller salvages failure, fishing tool can take out influences subsequent job.
In order that structure connection it is reliably secure, the top connection 1 is fixed with jar stem 3 by pin, the nut 4 with it is outer
Cylinder 6 is fixed by pin, and the fixed cover 10 is fixed with outer barrel 6 and connecting seat 13 by pin respectively, 13 points of the connecting seat
Do not fixed by pin with mandrel 17 and stay tube 15.
It is exemplified as above be only to of the invention for example, do not constitute the limitation to protection scope of the present invention, it is every with
The same or analogous design of the present invention is belonged within protection scope of the present invention.
Claims (9)
1. a kind of mechanical throttle device fishing tool, including salvaging mechanism, it is characterised in that：The salvaging mechanism upper end connects successively
Control linkage and jarring linkage are connected to, the jarring linkage includes jar stem（3）And outer barrel（6）, the jar stem
（3）Upper end connects top connection（1）, jar stem（3）Outside is cased with nut（4）, jar stem（3）Basolateral is provided with boss, jarring
Bar（3）It is placed in outer barrel（6）It is interior, and nut（4）With outer barrel（6）The connection of upper end inner side, the inner cylinder（6）Lower end is inserted with shear pin
（5）, and shear pin（5）Positioned at jar stem（3）Lower section, the control linkage includes control-rod（9）, fixed cover（10）With
Connecting seat（13）, the fixed cover（10）Upper end is connected to inner cylinder（6）Lower end outside, fixed cover（10）Lower end connects connecting seat
（13）, fixed cover（10）Inner side is provided with limited step, the control-rod（9）It is placed in fixed cover（10）And connecting seat（13）Formed
In annular space, control-rod（9）Top is connected with nut（8）, and nut（8）It is placed in outer barrel（6）It is interior.
2. a kind of mechanical throttle device fishing tool as claimed in claim 1, it is characterised in that：The outer barrel（6）Side wall
It is provided with passage（2）.
3. a kind of mechanical throttle device fishing tool as claimed in claim 1, it is characterised in that：The fixed cover（10）On set
There is peep hole（7）, shear pin（5）When not cutting, peep hole（7）Position alignment control-rod（9）On threaded lower end.
4. a kind of mechanical throttle device fishing tool as claimed in claim 1, it is characterised in that：The fixed cover（10）Limit
Position step and connecting seat（13）Between be embedded with spacer sleeve（11）, the spacer sleeve（11）Internal connection circlip（12）, the control
Bar（9）It is placed in jump ring（12）It is interior, and control-rod（9）Top is provided with screw thread；
Or the spacer sleeve（11）Inwall is provided with flexible step, the control-rod（9）Top is provided with back taper screw thread.
5. a kind of mechanical throttle device fishing tool as claimed in claim 1, it is characterised in that：The salvaging mechanism includes bullet
Spring（14）, stay tube（15）, spacer ring（16）, mandrel（17）, safe shear pin（18）, Rectangular Spring（19）, contiguous block（20）, card
Pawl（21）, locking set（22）, the stay tube（15）And mandrel（17）It is connected to connecting seat（13）The outside and inner side of lower end,
Mandrel（17）It is placed on control-rod（9）Lower outside, the mandrel（17）With stay tube（15）Between have spring（14）And spacer ring（16）,
Spacer ring（16）With mandrel（17）By safe shear pin（18）It is fixed, spring（14）Connecting seat is placed in by compression（13）With spacer ring
（16）Between, spacer ring（16）Outside is cased with Rectangular Spring（19）, and Rectangular Spring（19）Positioned at stay tube（15）Lower section, mandrel（17）
Lower end outside limited location step, is equipped with contiguous block on limited step（20）, contiguous block（20）With spacer ring（16）Between leave space,
Contiguous block（20）Outside is provided with projection, claw（21）Upper end is provided with circular hole, contiguous block（20）Projection be placed in claw（21）Circle
In hole, claw（21）It is placed in Rectangular Spring（19）Lower section, claw（21）It is embedded in locking set（22）It is interior.
6. a kind of mechanical throttle device fishing tool as claimed in claim 5, it is characterised in that：The top connection（1）With shake
Hit bar（3）Fixed by pin, the nut（4）With outer barrel（6）Fixed by pin, the fixed cover（10）Respectively with outer barrel
（6）And connecting seat（13）Fixed by pin, the connecting seat（13）Respectively with mandrel（17）And stay tube（15）It is solid by pin
It is fixed.
7. a kind of operating method of mechanical throttle device fishing tool, it is characterised in that：Comprise the following steps：
Step 1）Assembling fishing tool：Jarring linkage, control linkage and salvaging mechanism are sequentially connected, composition salvages work
Tool；
Step 2）Input fishing tool：By under steel wire or well logging armored cable just fishing tool lower going-into-well, reaching throttling
Behind device top, fishing tool is quickly transferred, then slowly above carry fishing tool, when now upper lifting force is more than suspending weight now,
Illustrate that fishing tool has caught flow controller fishing neck；
Step 3）Deblocking flow controller：After fishing tool catches flow controller fishing neck, above carry fishing tool and quickly transfer, jar stem
（3）Cut shear pin（5）Move down, impact nut（8）, nut（8）And control-rod（9）Move down, be repeated carry and
Decentralization is acted, due to jar stem（3）Basolateral is provided with boss, and boss is subject to nut（4）Stop, jar stem（3）In outer barrel
（6）Inside move up and down, nut（8）And control-rod（9）By jar stem（3）Impact move down, due to fixed cover（10）It is interior
Side is provided with limited step, nut（8）And control-rod（9）Move to fixed cover（10）The position of interior limited step no longer moves down,
Control-rod（9）Compression throttling device center-pole forces flow controller packing element to unseal；
Step 4）Fishing tool is above carried i.e. it is proposed that flow controller.
8. a kind of operating method of mechanical throttle device fishing tool as claimed in claim 7, it is characterised in that：The step
3）Middle control-rod（9）Operation there is one-way, work as jar stem（3）Impulsive control bar（9）When moving down, control-rod（9）Upper screw thread
It is stuck in jump ring（12）In, work as jar stem（3）After up, control-rod（9）Shifting can not be gone up；
Or work as jar stem（3）Impulsive control bar（9）When moving down, control-rod（9）On back taper screw thread be stuck in spacer sleeve（11）
Flexible step on inwall, works as jar stem（3）After up, control-rod（9）Shifting can not be gone up.
9. a kind of operating method of mechanical throttle device fishing tool as claimed in claim 7, it is characterised in that：The step
3）In when flow controller unseal failure when, by upward jarring or downward jarring, give up so that safe shear pin（18）Disconnect,
Spring（14）Elastic force discharges, spring（14）Elastic force be more than Rectangular Spring（19）Elastic force, spacer ring（16）Move down, jarring contiguous block
（20）, force claw（21）Depart from locking set（22）, claw（21）Open, unclamp flow controller fishing neck, now can be taken off beating
Fishing combined tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206239.XA CN106761521B (en) | 2016-12-23 | 2016-12-23 | A kind of mechanical throttle device fishing tool and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206239.XA CN106761521B (en) | 2016-12-23 | 2016-12-23 | A kind of mechanical throttle device fishing tool and its operating method |
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| Publication Number | Publication Date |
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| CN106761521A true CN106761521A (en) | 2017-05-31 |
| CN106761521B CN106761521B (en) | 2019-04-09 |
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| CN201611206239.XA Active CN106761521B (en) | 2016-12-23 | 2016-12-23 | A kind of mechanical throttle device fishing tool and its operating method |
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| 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 |
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| CN110439492A (en) * | 2018-05-03 | 2019-11-12 | 中国石油天然气股份有限公司 | Underground throttle device recyclable device and method |
| CN110725672A (en) * | 2019-09-16 | 2020-01-24 | 中国石油天然气股份有限公司 | Coiled tubing relieving choke and drainage gas production integrated pipe column and using method |
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| CN111503214A (en) * | 2020-06-04 | 2020-08-07 | 浙江银轮机械股份有限公司 | Installation cassette, shock pad and damper assembly |
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| CN107476773A (en) * | 2017-08-24 | 2017-12-15 | 中国石油天然气股份有限公司 | The tool string and method of obstacle in a kind of elimination well |
| 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 |
| CN107676054A (en) * | 2017-10-25 | 2018-02-09 | 中国石油天然气股份有限公司 | A kind of underground restrictor fishing tool and operating method |
| CN107676054B (en) * | 2017-10-25 | 2023-11-28 | 中国石油天然气股份有限公司 | Downhole choke fishing tool and operation method |
| CN107724986A (en) * | 2017-10-30 | 2018-02-23 | 中国石油天然气股份有限公司 | A kind of logging cable salvages the specific purpose tool and operating method of underground throttle device |
| CN110439492B (en) * | 2018-05-03 | 2021-11-02 | 中国石油天然气股份有限公司 | Underground choke recycling device and method |
| CN110439492A (en) * | 2018-05-03 | 2019-11-12 | 中国石油天然气股份有限公司 | Underground throttle device recyclable device and method |
| CN109057749A (en) * | 2018-07-30 | 2018-12-21 | 中国石油天然气股份有限公司 | A kind of easy fishing slip formula underground throttle device |
| CN110725672A (en) * | 2019-09-16 | 2020-01-24 | 中国石油天然气股份有限公司 | Coiled tubing relieving choke and drainage gas production integrated pipe column and using method |
| 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 |
| CN111441735A (en) * | 2020-04-30 | 2020-07-24 | 中国石油天然气股份有限公司 | Step releasing type underground choke salvaging tool and salvaging method |
| CN111441735B (en) * | 2020-04-30 | 2024-03-01 | 中国石油天然气股份有限公司 | Step release type downhole choke fishing tool and fishing method |
| CN111503214A (en) * | 2020-06-04 | 2020-08-07 | 浙江银轮机械股份有限公司 | Installation cassette, shock pad and damper assembly |
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