CN207905768U - Retrievable hanging packer for flow string under no killing well - Google Patents
Retrievable hanging packer for flow string under no killing well Download PDFInfo
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- CN207905768U CN207905768U CN201820216293.0U CN201820216293U CN207905768U CN 207905768 U CN207905768 U CN 207905768U CN 201820216293 U CN201820216293 U CN 201820216293U CN 207905768 U CN207905768 U CN 207905768U
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- 238000012856 packing Methods 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000004873 anchoring Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 3
- 241000239290 Araneae Species 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 206010024453 Ligament sprain Diseases 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model is related to hanging packer technical fields, it is a kind of retrievable hanging packer for flow string under no killing well comprising releasing tool, ontology, cover for seat of giving up, the first connector sleeve, the second connector sleeve, packing element cover for seat, mandrel, sealing mechanism, anchor mechanism, slips cover for seat and plug.The utility model reasonable and compact in structure, it is easy to use, it is applied to band pressure flow string operation, and when needing well workover in the later stage, the recyclable hanging packer solution after being set by tool on well is honored as a queen, again by above carrying flow string, the recyclable hanging packer that solution can be honored as a queen proposes well head, can subsequently carry out workover treatment, before solving existing workover treatment, the problem of needing to bore except packer, thus, it is possible to avoid pit shaft pollution and vessel wall damage caused by boring the packer removed.
Description
Technical field
The utility model is related to hanging packer technical field, be it is a kind of under no killing well flow string it is retrievable outstanding
Hang packer.
Background technology
Currently, bridge plug-perforation combined tech is bored due to having layer position, series flexible arrangement, infinite stages pressure break may be implemented
Has full-bore wellbore after mill, the technical advantages such as full pit shaft massive hydraulic fracture have become domestic and international low pressure, low permeability reservoirs are opened
Send out one of the main body renovation technique used.
After the completion of process above is implemented, tripping in flow string is needed to carry out production operation.Since flow string is complicated,
There are the underground accessory of sizes, the task difficulty with pressure flow string is big.Now both at home and abroad frequently with coiled tubing tripping in
Bridge plug, packer packing do not compress every this mode of flow string under payzone and apparatus for work and combine with workover rig and make in well head installation
With, realized under no killing well by way of flow string wellhead equipment, both modes the former there is coiled tubing tripping in bridges
Plug, packer operating cost are high, packing pressure is relatively low, are of limited application, later stage workover treatment needs to bore and removes packer, cause
Pit shaft pollution, vessel wall damage influence later stage production operation, packer slip and are easy pre-cooling during tripping in, and midway is sat
Envelope, causes the deficiency of serious engineering accident；The latter（Well head installation does not compress apparatus for work）It is low that there are operating efficiencies, operation at
This is excessively high.
Invention content
The utility model provides a kind of retrievable hanging packer for flow string under no killing well, overcomes above-mentioned
The deficiency of the prior art, capable of effectively solving existing band pressure flow string temporarily stifled operation, there are later stage workover treatments, and brill to be needed to remove
Packer, while can effectively solve the slips of existing packer during tripping at the problem of causing pit shaft pollution, vessel wall damage
It is easy pre-cooling, the problem of setting, cause serious engineering accident halfway.
The technical solution of the utility model is realized by following measures：It is a kind of to be used for flow string under no killing well
Retrievable hanging packer, including releasing tool, ontology, cover for seat of giving up, the first connector sleeve, the second connector sleeve, packing element cover for seat, core
Axis, sealing mechanism, anchor mechanism, slips cover for seat and plug；The first groove is provided in ontology, the first connector sleeve passes through second
Shear pin is fixedly mounted in the first groove, and is held out against at the top of the first connector sleeve and connected in the top surface of the first groove, first
The lower outside of female connector and the upper inner of the second connector sleeve are fixedly installed togather, the top of the bottom end of ontology and the second connector sleeve
End offsets, and mandrel is fixedly mounted on by third shear pin on the inside of the second connector sleeve, and the upper end of mandrel is fixed with cover for seat of giving up
Installation, releasing tool are fixedly mounted on by the first shear pin on the inside of cover for seat of giving up, lower end outside and the slips cover for seat of mandrel
Upper end inner seal be fixedly mounted, be installed with outside mandrel on the inside of the second connector sleeve below third shear pin
Side and the packing element cover for seat that can push the protruding anchoring of anchor mechanism, the packing element cover for seat outer sheath below the second connector sleeve are equipped with
Sealing mechanism is installed with anchor mechanism on the outside of the mandrel between sealing mechanism and slips cover for seat, and plug is cut by the 4th
Pin is cut to be fixedly mounted in the middle part of slips cover for seat, slip spider corresponding with inside and outside plug put on it is circumferentially distributed have it is at least one
By-pass prot, on the outside of the mandrel below cover for seat of giving up and on the inside of the first connector sleeve between be provided with the first annular space, in the first annular space
It is installed with the unidirectional self-lock mechanism that can lock the first connector sleeve position on the inside of the first interior connector sleeve；It is solid in the upper end of ontology
Surely there is the fishing joint on the outside of releasing tool, pawl is provided on the outside of fishing joint, third shear pin, first are cut
The shear strength for cutting pin, the 4th shear pin and the second shear pin is sequentially increased.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution：
Above-mentioned anchor mechanism includes slips pushing sleeve, slips and slips sleeve, and slips pushing sleeve is sleeved below sealing mechanism
On the outside of packing element cover for seat, slips limited ring groove is formed on the outside of the mandrel between slips pushing sleeve and slips cover for seat, slips sleeve is fixed
Mounted on the outside of slips pushing sleeve and slips cover for seat, in slips sleeve last week to being intervally distributed at least two slips extending ports
Group, each slips extending port group include upper and lower corresponding two slips extending ports, the corresponding slips limit of each slips extending port group
Installation is in the trapezoidal shape of interior narrow outer width there are one slips, slips in the annular groove of position, and slips limit is provided on the outside of the middle part of slips
The slips outside of slot, slips limiting slot upper and lower ends is respectively arranged with anchoring tooth corresponding with inside and outside slips extending port；In slips
The garter spring that all slips can be installed in slips limited ring groove, the upper inner of each slips are installed in limiting slot
It is both provided with the upper guiding conical surface being inclined outwardly from the bottom to top, the lower inside of each slips is both provided with from top to bottom outward
Inclined lower guiding conical surface is provided with the upper cooperation conical surface that can make upper guiding conical surface sliding in the lower end outside of slips pushing sleeve,
The lower cooperation conical surface of lower guiding conical surface sliding can be made by being provided on the outside of the upper end of slips cover for seat.
Packing element cover for seat outer side seal between above-mentioned sealing mechanism and slips pushing sleeve is equipped with third connector sleeve, slips pushing sleeve
Upper end be fixed in third connector sleeve, on the inside of third connector sleeve and on the outside of packing element cover for seat between be provided with and at least seal together
Circle；Or/and the upper outside of slips pushing sleeve is provided with the second concave station, the upper end base of slips sleeve is hung in the second concave station；Or/
Be provided with third concave station on the outside of the slips cover for seat below slips, be installed with positioned at third concave station on the inside of slips sleeve
The first interior thread bush；Or/and the lower inside of slips pushing sleeve is provided with limiting groove, in the lower end outside of packing element cover for seat
The positive stop lug boss being provided in limiting groove.
It is provided with crown pawl directed downwardly on the outside of above-mentioned mandrel corresponding with the first annular space, unidirectional self-lock mechanism includes upper tooth
Ring and lower ring gear are both provided with the latch that can be engaged with pawl on the inside of upper ring gear and lower ring gear；Upper ring gear and lower ring gear
It is arranged from top to bottom in the first annular space, the inside of upper ring gear and lower ring gear is respectively engaged with the pawl on the outside of mandrel, and
Mobile spacing is formed between lower ring gear and the first annular space bottom end；It is provided with radial direction on the first connector sleeve corresponding with lower ring gear
Limit hole is provided with limit blind hole on the outside of lower ring gear corresponding with inside and outside radial limit hole, in limit blind hole and radial limit
It is installed with deblocking briquetting simultaneously in hole, the 4th groove is provided on the inside of the ontology below deblocking briquetting.
The lower outside of above-mentioned upper ring gear is provided with the first frustum face being inclined outwardly from the bottom to top, on the top of lower ring gear
Inside is provided with the second frustum face coordinated with the first frustum face；Or/and ontology includes upper body and the second thread bush, first
Groove is arranged on the inside of upper body corresponding with the cover for seat of giving up below the first shear pin, the upper outside of the second thread bush with
The lower inside of upper body is fixedly mounted, and the 4th groove is arranged on the inside of the second thread bush, the bottom end of the second thread bush and second
The top of connector sleeve offsets, and boss, boss and upper body are provided on the outside of the first connector sleeve corresponding with the second shear pin
It is fixedly mounted by the second shear pin, third annular space is surrounded between boss, the first connector sleeve, the second thread bush and upper body,
Radial dismounting hole is provided in upper body corresponding with inside and outside the first shear pin；Or/and deblocking briquetting upper end on the inside of and
Lower end inside is both provided with chamfering.
Above-mentioned sealing mechanism includes at least two packing elements, and packing element is sleeved on the packing element between the second connector sleeve and anchor mechanism
On the outside of cover for seat, there are one shading rings for setting between two adjacent packing elements.
It is provided at least together between on the inside of the second connector sleeve below above-mentioned third shear pin and on the outside of packing element cover for seat
Sealing ring, on the inside of the lower end outside of mandrel and the upper end of slips cover for seat between be provided at least sealing ring together.
The utility model reasonable and compact in structure, it is easy to use, it is applied to band pressure flow string operation, is needed when the later stage
When wanting well workover, the recyclable hanging packer solution after being set by tool on well is honored as a queen, then by above carrying flow string, can
The recyclable hanging packer that solution is honored as a queen proposes well head, can subsequently carry out workover treatment, solve existing workover treatment it
Before, the problem of needing to bore except packer, thus, it is possible to avoid pit shaft pollution and vessel wall damage caused by boring the packer removed；Simultaneously
The joint of the utility model unidirectional self-lock mechanism, sealing mechanism and anchor mechanism is arranged, and makes this packer during tripping in, no
The accident that pre-cooling can occur and set halfway, so as to avoid serious engineering accident.
Description of the drawings
Attached drawing 1 is the main view half section schematic of the utility model top half.
Attached drawing 2 is the main view half section schematic of the utility model lower half portion.
Coding in attached drawing is respectively：1 is releasing tool, and 2 be cover for seat of giving up, and 3 be the first connector sleeve, and 4 be the second connection
Set, 5 be packing element cover for seat, and 6 be mandrel, and 7 be slips cover for seat, and 8 be plug, and 9 be the second shear pin, and 10 be third shear pin,
11 be the first shear pin, and 12 be shading ring, and 13 be the 4th shear pin, and 14 be by-pass prot, and 15 be the first annular space, and 16 be salvaging
Connector, 17 be slips pushing sleeve, and 18 be slips, and 19 be slips sleeve, and 20 be slips limited ring groove, and 21 be slips extending port, and 22 are
Slips limiting slot, 23 be garter spring, and 24 be upper guiding conical surface, and 25 be lower guiding conical surface, and 26 be the upper cooperation conical surface, and 27 bore for lower cooperation
Face, 28 be third connector sleeve, and 29 be sealing ring, and 30 be the second groove, and 31 be the first thread bush, and 32 be limiting groove, and 33 are limited
Position boss, 34 be pawl, and 35 be upper ring gear, and 36 be lower ring gear, and 37 be deblocking briquetting, and 38 be the 4th groove, and 39 be the first frustum
Face, 40 be the second frustum face, and 41 be upper body, and 42 be the second thread bush, and 43 be packing element, and 44 be boss, and 45 be third annular space, 46
Hole is dismounted to be radial.
Specific implementation mode
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, 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 front, rear, top, and bottom, left and right etc. is according to Figure of description 1
Butut direction determine that attached drawing 1 and attached drawing 2 be the main view half section structural representation of the utility model in a state of use
Figure.
The utility model is further described with reference to embodiment and attached drawing：
As shown in attached drawing 1,2, the retrievable hanging packer for being used for flow string under no killing well include releasing tool 1,
Ontology, cover for seat of giving up 2, the first connector sleeve 3, the second connector sleeve 4, packing element cover for seat 5, mandrel 6, sealing mechanism, anchor mechanism, slips
Cover for seat 7 and plug 8；The first groove is provided in ontology, the first connector sleeve 3 is fixedly mounted on by the second shear pin 9
In one groove, and the top of the first connector sleeve 3 is held out against in the top surface of the first groove, the lower outside of the first connector sleeve 3 and
The upper inner of two connector sleeves 4 is fixedly installed togather, and the bottom end of ontology and the top of the second connector sleeve 4 offset, and mandrel 6 passes through
Third shear pin 10 is fixedly mounted on 4 inside of the second connector sleeve, the upper end of mandrel 6 and the fixed installation of cover for seat 2 of giving up, work of giving up
Tool 1 is fixedly mounted on 2 inside of cover for seat of giving up, the upper end of the lower end outside and slips cover for seat 7 of mandrel 6 by the first shear pin 11
Inner seal is fixedly mounted, and 4 inside of the second connector sleeve below third shear pin 10 is installed with positioned at 6 outside of mandrel
And the packing element cover for seat 5 of the protruding anchoring of anchor mechanism can be pushed, the 5 outside suit of packing element cover for seat below the second connector sleeve 4
There is sealing mechanism, 6 outside of mandrel between sealing mechanism and slips cover for seat 7 is installed with anchor mechanism, and plug 8 passes through the
Four shear pins 13 are fixedly mounted in the middle part of slips cover for seat 7, circumferentially distributed in slips cover for seat 7 corresponding with inside and outside plug 8
There is at least one by-pass prot 14,6 outside of mandrel below cover for seat 2 of giving up and the first connector sleeve are provided with first between 3 inside
Annular space 15, the inside of the first connector sleeve 3 in the first annular space 15 be installed with can lock 3 position of the first connector sleeve it is unidirectional from
Latch mechanism；It is fixed with the fishing joint 16 positioned at 1 outside of releasing tool in the upper end of ontology, is arranged in the outside of fishing joint 16
Have a pawl, third shear pin 10, the first shear pin 11, the 4th shear pin 13 and the second shear pin 9 shear strength
It is sequentially increased.
The utility model is applied to band pressure flow string operation, when needing well workover in the later stage, will be sat by tool on well
The recyclable hanging packer solution being honored as a queen is honored as a queen, then by above carrying flow string, the recyclable suspension packing that solution can be honored as a queen
Device proposes well head, can subsequently carry out workover treatment, before solving existing workover treatment, the problem of needing to bore except packer,
Thus, it is possible to avoid pit shaft pollution and vessel wall damage caused by boring the packer removed；While the utility model unidirectional self-lock mechanism,
The joint of sealing mechanism and anchor mechanism is arranged, and makes this packer during tripping in, and pre-cooling will not occur and midway is sat
The accident of envelope, so as to avoid serious engineering accident.
It can complete to set using the utility model, establish production of hydrocarbons channel and deblocking operation；Using cable plus existing
There is the operating cost of setting tool tripping in the utility model low；By spraining pressure or plug 8 mould is established from two kinds of gas channels are dissolved
Formula effectively avoids the de- technical risk that can not sprain, does not influence production operation.
Since the upper end of the first connector sleeve 3 is against the top surface of the first groove, so not deposited between the first connector sleeve 3 and ontology
In relative displacement, therefore during setting, the second shear pin 9 is considered as marking closely, and the first connector sleeve 3 is connected to ontology
Together.
The bottom end of ontology and the top of the second connector sleeve 4 offset, and are convenient for the transmission of load.
The above-mentioned retrievable hanging packer for flow string under no killing well can be made further excellent according to actual needs
Change or/and improves：
As shown in attached drawing 1,2, anchor mechanism includes slips pushing sleeve 17, slips 18 and slips sleeve 19,17 sets of slips pushing sleeve
5 outside of packing element cover for seat below sealing mechanism, 6 outside of mandrel between slips pushing sleeve 17 and slips cover for seat 7 form card
Watt limited ring groove 20, slips sleeve 19 are fixedly mounted on the outside of slips pushing sleeve 17 and slips cover for seat 7, in 19 last week of slips sleeve
To at least two slips extending port groups are intervally distributed with, each slips extending port group includes upper and lower corresponding two slips extending ports
21, there are one slips 18 for installation in the corresponding slips limited ring groove 20 of each slips extending port group, and slips 18 is in interior narrow outer width
Trapezoidal shape is provided with slips limiting slot 22,18 outside of slips of 22 upper and lower ends of slips limiting slot on the outside of the middle part of slips 18
It is respectively arranged with anchoring tooth corresponding with inside and outside slips extending port 21；Being equipped in slips limiting slot 22 can be by all slips 18
The upper inner of the garter spring 23 being installed in slips limited ring groove 20, each slips 18 is both provided with from the bottom to top outward
Inclined upper guiding conical surface 24, the lower inside of each slips 18 are both provided with the lower guiding conical surface being from top to bottom inclined outwardly
25, the upper cooperation conical surface 26 that upper guiding conical surface 24 can be made to slide is provided in the lower end outside of slips pushing sleeve 17, in slips cover for seat 7
Upper end on the outside of be provided with can make lower guiding conical surface 25 slide the lower cooperation conical surface 27.
Under the thrust that the thrust of packing element cover for seat 5 is expanded with packing element 47, slips pushing sleeve 17 is pressed down, since slips pushes away
It is cone match between set 17 and slips 18（The cone match of upper guiding conical surface 24 and the upper cooperation conical surface 26）, in slips pushing sleeve 17
Promotion under, slips 18 is pushed out, generate anchoring effect.
Slips 18 is by the way of being built in slips sleeve 19, and uses 23 stationary slip 18 of garter spring, it is made to be close to core
Axis 6 reduces the risk that midway is set, and the radial displacement of slips 18 is limited, while during deblocking, due to the bullet of garter spring 23
Force effect can play the role of ensureing that deblocking is smoothed out；And the setting of built-in slips, further effectively prevent tripping in
Tool pre-cooling in the process further decreases the risk that midway is set.
As shown in attached drawing 1,2,5 outer side seal of packing element cover for seat between sealing mechanism and slips pushing sleeve 17 is equipped with third
The upper end of connector sleeve 28, slips pushing sleeve 17 is fixed in third connector sleeve 28, outside 28 inside of third connector sleeve and packing element cover for seat 5
At least one of sealing ring 29 is provided between side, the upper outside of slips pushing sleeve 17 is provided with the second concave station 30, slips sleeve 19
Upper end base hang in the second concave station 30,7 outside of slips cover for seat below slips 18 is provided with third concave station, slips sleeve 19
Inside is installed with the first thread bush 31 in third concave station, and it is recessed that the lower inside of slips pushing sleeve 17 is provided with limit
Slot 32 is provided with the positive stop lug boss 33 in limiting groove 32 in the lower end outside of packing element cover for seat 5.
During deblocking, when packing element cover for seat 5 moves up, packing element cover for seat 5 pulls slips pushing sleeve 17 by positive stop lug boss 33
It moves up, the anchoring tooth of slips 18 is made to withdraw.
As shown in attached drawing 1,2,6 outside of mandrel corresponding with the first annular space 15 is provided with crown pawl 34 directed downwardly, unidirectionally
Self-locking mechanism includes upper ring gear 35 and lower ring gear 36, and being both provided in the inside of upper ring gear 35 and lower ring gear 36 can with pawl 34
The latch of engagement；Upper ring gear 35 and lower ring gear 36 are arranged from top to bottom in the first annular space 15, upper ring gear 35 and lower ring gear 36
Inside is respectively engaged with the pawl 34 in 6 outside of mandrel, and movement is formed between 15 bottom end of lower ring gear 36 and the first annular space
Spacing；It is provided with radial limit hole on first connector sleeve corresponding with lower ring gear 36 3, corresponding with inside and outside radial limit hole
36 outside of lower ring gear is provided with limit blind hole, is installed with deblocking briquetting 37 simultaneously in limit blind hole and radial limit hole, is solving
It is provided with the 4th groove 38 on the inside of the ontology of 37 lower section of envelope briquetting.
The effect of deblocking briquetting 37 is to compress lower ring gear 36 during setting and then compress upper ring gear 35, make setting
In the process, upper ring gear 35 can compress mandrel 6 with lower ring gear 36, generate unidirectional self-lock effect.
The setting of mobile spacing, can be cut in the second shear pin 9 between lower 36 and first annular space of ring gear, 15 bottom end
Afterwards, meet the requirement of lower 36 downlink of ring gear.
As shown in attached drawing 1,2, the first frustum face being inclined outwardly from the bottom to top is provided in the lower outside of upper ring gear 35
39, the second frustum face 40 coordinated with the first frustum face 39 is provided in the upper inner of lower ring gear 36；Or/and ontology includes
Upper body 41 and the second thread bush 42, the first groove are arranged on corresponding with the cover for seat 2 of giving up below the first shear pin 11
41 inside of ontology, the upper outside of the second thread bush 42 are fixedly mounted with the lower inside of upper body 41, the setting of the 4th groove 38
In 42 inside of the second thread bush, the bottom end of the second thread bush 42 and the top of the second connector sleeve 4 offset, with the second shear pin 9
The outside of corresponding first connector sleeve 3 is provided with boss 44, and boss 44, which is fixed with upper body 41 by the second shear pin 9, pacifies
Dress, surrounds third annular space 45, with the first shear pin between boss 44, the first connector sleeve 3, the second thread bush 42 and upper body 41
Radial dismounting hole 46 is provided with inside and outside 11 in corresponding upper body 41；Or/and on the inside of the upper end of deblocking briquetting 37 and in lower end
Side is both provided with chamfering.
Since the 9 no relative displacement of the second shear pin will not be cut, therefore between the second thread bush 42 and the first connector sleeve 3
Relative displacement is not will produce, so during setting, the second thread bush 42 can firmly push down deblocking briquetting 37, make it not
It is altered into third annular space 45 in meeting and upper ring gear 35 is caused to lose locking effect with lower ring gear 36.
The setting for unsealing 37 inner side chamfering of briquetting is inserted into convenient for it in the limit blind hole of lower ring gear 36.
As shown in attached drawing 1,2, sealing mechanism includes at least two packing elements 47, and packing element 47 is sleeved on the second connector sleeve 4 and anchor
Determine 5 outside of packing element cover for seat between mechanism, there are one shading rings 12 for setting between two adjacent packing elements 43.
Shading ring 12 is avoided that between packing element 47 leads to situation pinched together after compression because distance is too close, plays guarantor
It protects packing element 47 and improves the effect of sealing performance.
As shown in attached drawing 1,2,4 inside of the second connector sleeve below third shear pin 10 and 5 outside of packing element cover for seat
Between be provided at least one of sealing ring 29, on the inside of the lower end outside of mandrel 6 and the upper end of slips cover for seat 7 between be provided at least
One of sealing ring 29.
The above technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and best 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：When setting operation, by cable by this for raw under no killing well
Production tubing string retrievable hanging packer be lowered into designated position, then suppressed by existing setting tool, upper body 41 by
Downward thrust, this makes the second thread bush 42 being connected with upper body 41 by downward thrust, when pressure reaches
When to certain value, third shear pin 10 is cut first, and the packing element cover for seat 5 being connect with the second connector sleeve 4 is made in thrust
It is moved down under, and then drives the second connector sleeve 4 to squeeze packing element 47 and be allowed to expand outward；Simultaneously as slips pushing sleeve 17
It is cone match between slips 18, therefore the first connector sleeve 3 drives slips pushing sleeve 17 by slips 18 from slips under thrust
Extending port 21 is released, and the anchoring process of slips 18 is carried out；At the same time, make in the pressure of the first connector sleeve 3 and deblocking briquetting 37
Under, ring gear 35 is moved downward with lower ring gear 36 in drive, after the completion of this packer setting, upper ring gear 35 and lower ring gear 36 due to
Therefore its unidirectional self-lock function, upper ring gear 35 voluntarily uplink can not only will not prevent the second spiral shell with after lower 36 downlink of ring gear
Line covers the 42, first connector sleeve 3, the second connector sleeve 4, packing element cover for seat 5 reverse, and can lock setting force, maintain packing element 47 with
Slips 18 sets state.
It after the completion of sitting extension closure process, suppresses and cuts the first shear pin 11, propose releasing tool 1, then well head is pacified
Production tree and preventer are filled, production string is given birth in then tripping in, and fishing head connects tool on well, and the then well head cutting the 4th that builds the pressure is cut
Pin 13 is cut, plug 8 is fallen, and is made by-pass prot 14 and unicom inside this packer, is established production of hydrocarbons channel, carry out production work
Industry.
When needing workover treatment, recycling is needed to be needed at this time for the retrievable hanging packer of flow string under no killing well
The hanging packer is unsealed, deblocking operation principle is：First shear through the second shear pin 9, the first connector sleeve 3 with
Second thread bush 42 separates, and by above carrying tool on well, above puts on ontology 41, the second thread bush 42, when by upper body 41, second
Thread bush 42 pull up certain distance after, deblocking briquetting 37 fall into the 4th groove 38 of the second thread bush 42, make ring gear 35 with
Lower 36 self-locking of ring gear；After the second thread bush 42 rises certain distance, the second connector sleeve 4 is pulled to rise together, and then band
Dynamic packing element cover for seat 5 rises, to which packing element 47 unseals；Under the action of 5 lower end of packing element cover for seat pulls slips pushing sleeve 17, slips 18 is received
It returns, releases anchoring effect, completed to unseal process.
Claims (10)
1. a kind of retrievable hanging packer for flow string under no killing well, it is characterised in that including releasing tool, ontology,
It gives up cover for seat, the first connector sleeve, the second connector sleeve, packing element cover for seat, mandrel, sealing mechanism, anchor mechanism, slips cover for seat and stifled
Head；The first groove is provided in ontology, the first connector sleeve is fixedly mounted on by the second shear pin in the first groove, and
It is held out against at the top of first connector sleeve in the top surface of the first groove, in the top of the lower outside of the first connector sleeve and the second connector sleeve
Side is fixedly installed togather, and the bottom end of ontology and the top of the second connector sleeve offset, and mandrel is fixed by third shear pin pacifies
On the inside of the second connector sleeve, the upper end of mandrel and cover for seat fixed installation of giving up, releasing tool are fixed by the first shear pin
On the inside of cover for seat of giving up, the lower end outside of mandrel is fixedly mounted with the upper end inner seal of slips cover for seat, is sheared in third
It is installed on the inside of the second connector sleeve below pin on the outside of mandrel and the protruding anchoring of anchor mechanism can be pushed
Packing element cover for seat, packing element cover for seat outer sheath below the second connector sleeve are equipped with sealing mechanism, sealing mechanism and slips cover for seat it
Between mandrel on the outside of be installed with anchor mechanism, plug is fixedly mounted on the middle part of slips cover for seat by the 4th shear pin
It is interior, slip spider corresponding with inside and outside plug put on it is circumferentially distributed have at least one by-pass prot, outside the mandrel below cover for seat of giving up
It is provided with the first annular space between on the inside of side and the first connector sleeve, energy is installed on the inside of the first connector sleeve in the first annular space
Lock the unidirectional self-lock mechanism of the first connector sleeve position；The salvaging on the outside of releasing tool is fixed in the upper end of ontology to connect
Head, is provided with pawl on the outside of fishing joint, and third shear pin, the first shear pin, the 4th shear pin and second are cut
The shear strength for cutting pin is sequentially increased.
2. the retrievable hanging packer according to claim 1 for flow string under no killing well, it is characterised in that anchor
It includes slips pushing sleeve, slips and slips sleeve to determine mechanism, and slips pushing sleeve is sleeved on the outside of the packing element cover for seat below sealing mechanism,
Form slips limited ring groove on the outside of mandrel between slips pushing sleeve and slips cover for seat, slips sleeve be fixedly mounted on slips pushing sleeve and
The outside of slips cover for seat, in slips sleeve last week to being intervally distributed at least two slips extending port groups, each slips extending port
Group includes upper and lower corresponding two slips extending ports, in the corresponding slips limited ring groove of each slips extending port group there are one installations
Slips, slips are in the trapezoidal shape of interior narrow outer width, and slips limiting slot, slips limiting slot upper and lower two are provided on the outside of the middle part of slips
It is respectively arranged with anchoring tooth corresponding with inside and outside slips extending port on the outside of the slips at end；Being equipped in slips limiting slot can be by institute
There is slips to be installed in the garter spring in slips limited ring groove, the upper inner of each slips is both provided with from the bottom to top outward
Inclined upper guiding conical surface, the lower inside of each slips are both provided with the lower guiding conical surface being from top to bottom inclined outwardly,
The lower end outside of slips pushing sleeve is provided with the upper cooperation conical surface that guiding conical surface can be made to slide, and is set on the outside of the upper end of slips cover for seat
The lower cooperation conical surface of lower guiding conical surface sliding can be made by being equipped with.
3. the retrievable hanging packer according to claim 2 for flow string under no killing well, it is characterised in that close
Packing element cover for seat outer side seal between sealing mechanism and slips pushing sleeve is equipped with third connector sleeve, and the upper end of slips pushing sleeve is fixed on
In three connector sleeves, on the inside of third connector sleeve and on the outside of packing element cover for seat between be provided at least sealing ring together；Or/and slips
The upper outside of pushing sleeve is provided with the second concave station, and the upper end base of slips sleeve is hung in the second concave station；Or/and below slips
Slips cover for seat on the outside of be provided with third concave station, be installed with the first screw thread in third concave station on the inside of slips sleeve
Set；Or/and the lower inside of slips pushing sleeve is provided with limiting groove, it is provided with positioned at limit in the lower end outside of packing element cover for seat
Positive stop lug boss in the groove of position.
4. the retrievable hanging packer according to claim 1 or 2 or 3 for flow string under no killing well, feature
It is to be provided with crown pawl directed downwardly on the outside of mandrel corresponding with the first annular space, unidirectional self-lock mechanism includes upper ring gear and lower tooth
Ring is both provided with the latch that can be engaged with pawl on the inside of upper ring gear and lower ring gear；Upper ring gear and lower ring gear are from top to bottom
It is arranged in the first annular space, the inside of upper ring gear and lower ring gear is respectively engaged with the pawl on the outside of mandrel, and in lower ring gear
Mobile spacing is formed between the first annular space bottom end；It is provided with radial limit hole on the first connector sleeve corresponding with lower ring gear,
It is provided with limit blind hole on the outside of lower ring gear corresponding with inside and outside radial limit hole, in limit blind hole and radial limit hole simultaneously
It is installed with deblocking briquetting, the 4th groove is provided on the inside of the ontology below deblocking briquetting.
5. the retrievable hanging packer according to claim 4 for flow string under no killing well, it is characterised in that on
The lower outside of ring gear is provided with the first frustum face being inclined outwardly from the bottom to top, is provided with and the in the upper inner of lower ring gear
Second frustum face of one frustum face cooperation；Or/and ontology includes upper body and the second thread bush, the setting of the first groove is with the
On the inside of the corresponding upper body of cover for seat of giving up below one shear pin, in the upper outside of the second thread bush and the lower part of upper body
Side is fixedly mounted, and the 4th groove is arranged on the inside of the second thread bush, the top phase of the bottom end of the second thread bush and the second connector sleeve
It supports, boss is provided on the outside of the first connector sleeve corresponding with the second shear pin, boss passes through the second shear pin with upper body
Nail is fixedly mounted, and third annular space is surrounded between boss, the first connector sleeve, the second thread bush and upper body, with the first shear pin
Radial dismounting hole is provided in inside and outside corresponding upper body；Or/and it is respectively provided with lower end inside on the inside of the upper end of deblocking briquetting
There is chamfering.
6. the retrievable hanging packer for flow string under no killing well according to claims 1 or 2 or 3 or 5, special
Sign is that sealing mechanism includes at least two packing elements, and packing element is sleeved on outside the packing element cover for seat between the second connector sleeve and anchor mechanism
Side, there are one shading rings for setting between two adjacent packing elements.
7. the retrievable hanging packer according to claim 4 for flow string under no killing well, it is characterised in that close
Sealing mechanism includes at least two packing elements, and packing element is sleeved on the outside of the packing element cover for seat between the second connector sleeve and anchor mechanism, in phase
There are one shading rings for setting between two adjacent packing elements.
8. the retrievable hanging packer for flow string under no killing well according to claims 1 or 2 or 3 or 5 or 7,
It is characterized in that being provided between on the inside of the second connector sleeve below third shear pin and on the outside of packing element cover for seat at least close together
Seal, on the inside of the lower end outside of mandrel and the upper end of slips cover for seat between be provided at least sealing ring together.
9. the retrievable hanging packer according to claim 4 for flow string under no killing well, it is characterised in that the
At least sealing ring together is provided between on the inside of the second connector sleeve below three shear pins and on the outside of packing element cover for seat, in mandrel
At least sealing ring together is provided between on the inside of the upper end of lower end outside and slips cover for seat.
10. the retrievable hanging packer according to claim 6 for flow string under no killing well, it is characterised in that the
At least sealing ring together is provided between on the inside of the second connector sleeve below three shear pins and on the outside of packing element cover for seat, in mandrel
At least sealing ring together is provided between on the inside of the upper end of lower end outside and slips cover for seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216293.0U CN207905768U (en) | 2018-02-07 | 2018-02-07 | Retrievable hanging packer for flow string under no killing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216293.0U CN207905768U (en) | 2018-02-07 | 2018-02-07 | Retrievable hanging packer for flow string under no killing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207905768U true CN207905768U (en) | 2018-09-25 |
Family
ID=63563582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820216293.0U Withdrawn - After Issue CN207905768U (en) | 2018-02-07 | 2018-02-07 | Retrievable hanging packer for flow string under no killing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207905768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425655A (en) * | 2018-02-07 | 2018-08-21 | 中国石油集团西部钻探工程有限公司 | Retrievable hanging packer for flow string under no killing well |
| CN109356548A (en) * | 2018-11-05 | 2019-02-19 | 中国石油化工股份有限公司 | A kind of downhole hardware and operation method suitable for snubbing serving |
-
2018
- 2018-02-07 CN CN201820216293.0U patent/CN207905768U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425655A (en) * | 2018-02-07 | 2018-08-21 | 中国石油集团西部钻探工程有限公司 | Retrievable hanging packer for flow string under no killing well |
| CN108425655B (en) * | 2018-02-07 | 2024-01-23 | 中国石油天然气集团有限公司 | Removable hanging packer for snubbing production string |
| CN109356548A (en) * | 2018-11-05 | 2019-02-19 | 中国石油化工股份有限公司 | A kind of downhole hardware and operation method suitable for snubbing serving |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180925 Effective date of abandoning: 20240123 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180925 Effective date of abandoning: 20240123 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |