CN205577937U - But blanking plug in recovery type oil pipe - Google Patents
But blanking plug in recovery type oil pipe Download PDFInfo
- Publication number
- CN205577937U CN205577937U CN201620074397.3U CN201620074397U CN205577937U CN 205577937 U CN205577937 U CN 205577937U CN 201620074397 U CN201620074397 U CN 201620074397U CN 205577937 U CN205577937 U CN 205577937U
- Authority
- CN
- China
- Prior art keywords
- slips
- wall
- mandrel
- deblocking
- seat
- 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- Withdrawn - After Issue
Links
- 238000011084 recovery Methods 0.000 title abstract description 3
- 238000012856 packing Methods 0.000 claims abstract description 80
- 238000009434 installation Methods 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000004323 axial length Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 241000239290 Araneae Species 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 1
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 1
- 241001330002 Bambuseae Species 0.000 abstract 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 1
- 239000011425 bamboo Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to an it is a but blanking plug in recovery type oil pipe to block up technical field in the oil pipe, and it includes release sub, fishing head, deblocking dabber, a last slips section of thick bamboo, packing element dabber, lower slip spider, lower clutch, lower mandrel, locking pawl, release sub's inside has the opening to install the axocoel down on, the fishing head suit last install the axocoel in, fishing head's lower part inner wall and the upper portion outer wall fixed mounting of deblocking dabber together, the upper portion of deblocking dabber evenly is provided with the major axis hole along the circumference. The utility model has the advantages of reasonable and compact structure, convenient to use, the utility model discloses sit to seal and all to adopt income instrument under the steel wire with the deblocking to the seat seals with deblocking easy operation easily capablely, guaranteeing can also to provide bigger snap -in force under the good circumstances of shutoff, makes the utility model discloses it is unmovable after the shutoff, guarantee to seal, simultaneously, the utility model discloses after the deblocking is accomplished, can retrieve, the utility model discloses can seal by the optional position seat in oil pipe, shutoff pressure is high, satisfies various operating mode requirements, effective reduce cost.
Description
Technical field
This utility model relates to blocking device technical field in oil pipe, is blanking plug in a kind of reclaimed oil pipe.
Background technology
During Oil/gas Well well workover, often to play lower tubular column, in order to prevent blowout, well control equipment will be installed, remotely annular space can be implemented moment closing well when there is overflow or blowout, but some blowouts also occur in tubing string, be that fine thread connects owing to oil pipe connects, after there is overflow, installing wellhead cock sometimes has difficulties, and causes gas blowout accident.Particularly construct at carbonate reservoir, construction often it is under well killing fluid constantly leakage state during well workover, in order to equilibrium strata pressure majority uses " cage " method, during lift pipe string, in tubing string, blowout prevention annoyings the well workover technology person of entering always, particularly when deep-well is constructed, playing one-trip string and generally require for a long time, the hour of danger of blowout exists, when lift pipe string to tubing string in effectively to block be extremely urgent problem in bottom.It addition, aborning leak stopping water time be also required in oil pipe blocking.Existing blanking plug in oil pipe mostly is disposable blocking, needs bore mill or propose with tubing string when opening, under fashionable need specific purpose tool, under enter after cannot reclaim, bore except trouble, adds additional operating cost.We the thinking of research are: designing and a kind of can set closure in optional position in oil pipe with the blanking plug in oil pipe entered under steel wire, operation can use steel wire instrument to reclaim after completing, latus rectum in recovery oil pipe.
Summary of the invention
This utility model provides blanking plug in a kind of reclaimed oil pipe, overcome the deficiency of above-mentioned prior art, its can effectively solve existing blanking plug in oil pipe complex operation, under fashionable need specific purpose tool and under enter after cannot reclaim and problem that operating cost is high.
The technical solution of the utility model is realized by following measures: blanking plug in a kind of reclaimed oil pipe, including back-off sub, fishing head, deblocking mandrel, upper slips cylinder, packing element mandrel, lower slips seat, lower contact, lower mandrel, locking pawl；nullThere is downward opening upper installation axocoel the inside of back-off sub，Fishing head is sleeved in installation axocoel，The lower inner wall of fishing head is fixedly installed togather with the external wall of upper portion of deblocking mandrel，The top of deblocking mandrel is circumferentially evenly arranged with the long axis hole of at least two，It is set with upper slips seat on deblocking mandrel below fishing head，The top external diameter of upper slips seat is less than lower outer diameter，The middle part outer wall of upper slips seat is the upper frustum of transition upper slips seat external wall of upper portion and bottom outer wall，The top of upper slips seat is provided with the spacing hole corresponding with long axis hole，The axial length of spacing hole is less than the axial length of long axis hole，The upper protruding block of at least three circumferentially it is evenly arranged with in upper slips seat external wall of upper portion below spacing hole，Upper slips stopper slot is formed between adjacent two upper protruding blocks，In upper slips stopper slot, by upper slips ring, upper slips is installed，The lower inner wall of upper slips is for match upper conical with upper frustum，The top external diameter of upper slips is less than the lower outer diameter of upper slips，Grappling tooth is distributed on the bottom outer wall of upper slips，It is provided with fixture block on the upper end outer wall of upper slips，Upper slips jacket casing is contained on the upper slips seat below back-off sub，The hole of topping bar that internal diameter matches with upper slips top external diameter is arranged at the bottom of upper slips cylinder，Correspondence top bar hole upper slips cylinder on be provided with the upper latch notch corresponding with upper fixture block，Upper fixture block lays respectively in upper latch notch，It is installed with connecting pin on upper slips cylinder above upper latch notch，Connecting pin is positioned at spacing hole and the top of long axis hole，It is installed with between upper slips cylinder and upper slips seat and sets pin，It is provided with, between back-off sub and upper slips seat, ring of giving up，Give up and be fixedly installed togather by pin of giving up between ring and back-off sub，It is installed with on upper slips seat outer wall above ring of giving up
C
Type ring,
C
The external diameter of type ring, more than the internal diameter of ring of giving up, the bottom outer wall of upper slips seat is provided with slips and connects outer groove, and the deblocking mandrel below upper slips seat is set with packing element assembly, and slips connection annular groove is fixedly installed togather with the top of packing element assembly；nullThe bottom of packing element assembly is provided with lower slips and installs annular groove，Install at lower slips and be provided with crown locking external tooth upward on the packing element assembly inside annular groove，The upper inside wall of lower slips seat and lower slips are installed annular groove and are fixedly installed togather，Opening up installation cavity is had in the top of lower contact，The bottom of lower slips seat is fixedly installed togather with the inwall of installation cavity，There is opening up lower installation axocoel the inside of lower slips seat，There is top bar hole and the hole of getting out of a predicament or an embarrassing situation that internal diameter reduces successively the inside of lower installation axocoel，Lower mandrel is positioned at the bottom in hole of getting out of a predicament or an embarrassing situation，The external diameter of lower mandrel and the diameter compatible in hole of getting out of a predicament or an embarrassing situation，The bottom outer wall of deblocking mandrel is fixedly installed togather with the upper inside wall of lower mandrel，Deblocking pin it is installed with between lower mandrel and lower slips seat，It is provided with through hole with on the deblocking pin lower mandrel on same RADIAL，The bottom outer wall of lower slips seat is the grappling installation annular groove that external diameter is less than lower slips seat top external diameter，Grappling is installed annular groove to grappling and installed the lower slips seat outer wall above annular groove is the lower frustum that annular groove is installed in transition lower slips seat outer wall and grappling，The lower protruding block being circumferentially evenly arranged with at least three on annular groove is installed in grappling，Lower slips stopper slot is formed between adjacent two lower protruding blocks，In lower slips stopper slot, by lower slips ring, lower slips is installed，The lower outer diameter of lower slips is less than the external diameter of lower slips，The upper inside wall of lower slips is the inferior pyramidal platform that matches with lower frustum，Grappling tooth is distributed in the external wall of upper portion of lower slips，The lower fixture block of at least two circumferentially it is evenly arranged with on the lower end outer wall of lower slips，Lower slips jacket casing is contained on the lower slips seat above lower contact，The hole of getting out of a predicament or an embarrassing situation that internal diameter and lower slips lower outer diameter match is arranged at the top of lower slips cylinder，Correspondence get out of a predicament or an embarrassing situation hole lower slips cylinder on be provided with the lower bayonet socket corresponding with lower fixture block，Lower fixture block lays respectively in lower bayonet socket；It is provided with locking pawl between hole and deblocking mandrel topping bar, locking pawl is cylindrically, the lower inner wall of locking pawl is integrally fixed with land in locking, in locking below land to locking pawl top locking pawl on be intervally distributed with axial grid, the upper inside wall of locking pawl is provided with crown locking internal tooth down, locking external tooth and locking internal tooth match.
Be presented herein below to above-mentioned utility model technical scheme optimize further or
/
And improvement:
Above-mentioned packing element assembly includes packing element mandrel, packing element, spacer ring and connecting cylinder；The upper end outer wall of packing element mandrel is integrally fixed with connection ring set, the inwall of connection ring set is connected annular groove with slips and is fixedly installed togather, the bottom of packing element mandrel is set with connecting cylinder, it is provided with lower slips on the bottom outer wall of connecting cylinder and annular groove is installed, lower slips installation annular groove is fixedly installed togather with the upper inside wall of lower slips seat, and the packing element mandrel outer wall below connecting cylinder is provided with crown locking external tooth upward；The packing element mandrel connected between ring set and connecting cylinder is set with the packing element of at least two the most successively, it is set with spacer ring on packing element mandrel between adjacent two packing elements, the lower end outside connecting ring set is provided with conical ring platform, conical ring platform it is provided with outside the upper end of connecting cylinder, conical ring platform it is respectively arranged with, in the conical surface matched with conical ring platform outside the two ends, upper end of packing element outside the upper and lower side of spacer ring.
Being provided with sealing ring on the inwall of above-mentioned connecting cylinder, lower slips is installed and is provided with sealing ring on annular groove, and the lower mandrel outer wall above and below deblocking pin is respectively arranged with sealing ring.
The crown grappling tooth towards horizontal process it is distributed on the bottom outer wall of above-mentioned upper slips；Or
/
With, in the external wall of upper portion of lower slips be distributed crown down have grappling tooth；Or
/
With, the tapering of lower frustum is more than the tapering of upper frustum.
The balance pipe being circumferentially radially distributed with at least one in the back-off sub on axocoel top is installed in above-mentioned correspondence.
The lower inner wall of above-mentioned fishing head is threadably secured with the external wall of upper portion unsealing mandrel and is installed together, the bottom of lower slips seat is threadably secured with the inwall of installation cavity and is installed together, the bottom outer wall of deblocking mandrel is threadably secured with the upper inside wall of lower mandrel and is installed together, connecting the inwall of ring set to be connected annular groove with slips and be threadably secured and be installed together, the upper inside wall of lower slips seat and lower slips installation annular groove are threadably secured and are installed together.
This utility model reasonable and compact in structure, easy to use, this utility model sets and unseals all to use and enters instrument under steel wire, and set and unseal that operation is simple, under ensureing closure good situations, be also provided that bigger gmatjpdumamics, do not move after making this utility model closure, ensure to seal, meanwhile, this utility model is after deblocking completes, it is possible to reclaim, this utility model can set optional position in oil pipe, closure pressure is high, meets various working condition requirement, effectively reduces cost.
Accompanying drawing explanation
Accompanying drawing
1
Top half master for this utility model embodiment regards half section structural representation.
Accompanying drawing
2
The latter half for this utility model embodiment is main regarding half section structural representation.
Accompanying drawing
3
Section view structure for amplifying schematic diagram is regarded for the master of locking pawl in this utility model.
Accompanying drawing
4
For accompanying drawing
3
's
A-A
To sectional structure schematic diagram.
Coding in accompanying drawing is respectively as follows:
1
For back-off sub,
2
For upper installation axocoel,
3
For fishing head,
4
For unsealing mandrel,
5
For long axis hole,
6
For upper slips seat,
7
For upper frustum,
8
For spacing hole,
9
For upper protruding block,
10
For lower slips ring,
11
For upper slips ring,
12
For upper slips,
13
For upper conical,
14
For grappling tooth,
15
For upper fixture block,
16
For upper slips cylinder,
17
For upper latch notch,
18
For connecting pin,
19
For setting pin,
20
For ring of giving up,
21
For pin of giving up,
22
For
C
Type ring,
23
For locking external tooth,
24
For lower slips seat,
25
For lower contact,
26
For installation cavity,
27
For lower installation axocoel,
28
For hole of topping bar,
29
For hole of getting out of a predicament or an embarrassing situation,
30
For lower mandrel,
31
For deblocking pin
,32
For grappling, annular groove is installed
,33
For lower frustum
,34
For lower protruding block
,35
For lower slips
,36
For inferior pyramidal platform
,37
For lower fixture block
,38
For lower slips cylinder
,39
For lower bayonet socket
,40
For locking pawl
,41
Land in locking
,42
For grid
,43
For locking internal tooth
,44
For packing element mandrel
,45
For connecting ring set
,46
For connecting cylinder
,47
For packing element
,48
For spacer ring
,49
For conical ring platform
,50
For sealing ring
,51
For balance pipe.
Detailed description of the invention
This utility model is not limited by following embodiment, can determine specific embodiment according to the technical solution of the utility model and practical situation.
In this utility model, for the ease of describing, the description of the relative position relation of each parts is all according to Figure of description
1
Butut mode be described, such as: the position relationship of upper and lower, left and right etc. is based on what the Butut direction of Figure of description determined.
Below in conjunction with embodiment and accompanying drawing, this utility model is further described:
Such as accompanying drawing
1
、
2
、
3
Shown in, in this reclaimed oil pipe, blanking plug includes back-off sub
1
, fishing head
3
, deblocking mandrel
4
, upper slips cylinder
6
, lower slips seat
24
, lower contact
25
, lower mandrel
30
, locking pawl
40
；Back-off sub
1
Inside have downward opening upper installation axocoel
2
, fishing head
3
It is sleeved on installation axocoel
2
In, fishing head
3
Lower inner wall with deblocking mandrel
4
External wall of upper portion be fixedly installed togather, unseal mandrel
4
Top be circumferentially evenly arranged with the long axis hole of at least two
5
, fishing head
3
The deblocking mandrel of lower section
4
On be set with upper slips seat
6
, upper slips seat
6
Top external diameter less than lower outer diameter, upper slips seat
6
Middle part outer wall be transition upper slips seat
6
External wall of upper portion and the upper frustum of bottom outer wall
7
, upper slips seat
6
Top be provided with and long axis hole
5
Corresponding spacing hole
8
, spacing hole
8
Axial length less than long axis hole
5
Axial length, at spacing hole
8
The upper slips seat of lower section
6
The upper protruding block of at least three circumferentially it is evenly arranged with in external wall of upper portion
9
, adjacent two upper protruding blocks
9
Between form upper slips stopper slot, by upper slips ring in upper slips stopper slot
11
Upper slips is installed
12
, upper slips
12
Lower inner wall be and upper frustum
7
Match upper conical
13
, upper slips
12
Top external diameter less than upper slips
12
Lower outer diameter, upper slips
12
Bottom outer wall on grappling tooth is distributed
14
, upper slips
12
Upper end outer wall on be provided with fixture block
15
, upper slips cylinder
16
It is sleeved on back-off sub
1
The upper slips seat of lower section
6
On, upper slips cylinder
16
Bottom have internal diameter and upper slips
12
What top external diameter matched top bar hole, correspondence is topped bar the upper slips cylinder in hole
16
On be provided with and upper fixture block
15
Corresponding upper latch notch
17
, upper fixture block
15
Lay respectively at upper latch notch
17
In, at upper latch notch
17
The upper slips cylinder of top
16
On be installed with connecting pin
18
, connecting pin
18
It is positioned at spacing hole
8
With long axis hole
5
Top in, at upper slips cylinder
16
With upper slips seat
6
Between be installed with and set pin
19
, in back-off sub
1
With upper slips seat
6
Between be provided with ring of giving up
20
, ring of giving up
20
With back-off sub
1
Between by pin of giving up
21
It is fixedly installed togather, at ring of giving up
20
The upper slips seat of top
6
It is installed with on outer wall
C
Type ring
22
,
C
Type ring
22
External diameter more than giving up ring
20
Internal diameter, upper slips seat
6
Bottom outer wall on be provided with slips connect outer groove, at upper slips seat
6
The deblocking mandrel of lower section
4
On be set with packing element assembly, slips connects the top of annular groove and packing element assembly and is fixedly installed togather；
The bottom of packing element assembly is provided with lower slips and installs annular groove, installs at lower slips and is provided with crown locking external tooth upward on the packing element assembly inside annular groove
23
, lower slips seat
24
Upper inside wall and lower slips annular groove be installed be fixedly installed togather, lower contact
25
Top in have opening up installation cavity
26
, lower slips seat
24
Bottom and installation cavity
26
Inwall be fixedly installed togather, lower slips seat
24
Inside have opening up lower installation axocoel
27
, lower installation axocoel
27
Inside have the hole of topping bar that internal diameter reduces successively
28
With hole of getting out of a predicament or an embarrassing situation
29
, lower mandrel
30
It is positioned at hole of getting out of a predicament or an embarrassing situation
29
Bottom in, lower mandrel
30
External diameter and hole of getting out of a predicament or an embarrassing situation
29
Diameter compatible, unseal mandrel
4
Bottom outer wall and lower mandrel
30
Upper inside wall be fixedly installed togather, at lower mandrel
30
With lower slips seat
24
Between be installed with deblocking pin
31
, with deblocking pin
31
Lower mandrel on same RADIAL
30
On be provided with through hole, lower slips seat
24
Bottom outer wall be that external diameter is less than lower slips seat
24
Annular groove is installed in the grappling of top external diameter
32
, annular groove is installed in grappling
32
To grappling, annular groove is installed
32
The lower slips seat of top
24
Outer wall is transition lower slips seat
24
Annular groove is installed in outer wall and grappling
32
Lower frustum
33
, in grappling, annular groove is installed
32
On be circumferentially evenly arranged with the lower protruding block of at least three
34
, adjacent two lower protruding blocks
34
Between form lower slips stopper slot, by lower slips ring in lower slips stopper slot
10
Lower slips is installed
35
, lower slips
35
Lower outer diameter less than lower slips
35
External diameter, lower slips
35
Upper inside wall be and lower frustum
33
Match inferior pyramidal platform
36
, lower slips
35
External wall of upper portion on grappling tooth is distributed
14
, lower slips
35
Lower end outer wall on be circumferentially evenly arranged with the lower fixture block of at least two
37
, lower slips cylinder
38
It is sleeved on lower contact
25
The lower slips seat of top
24
On, lower slips cylinder
38
Top have internal diameter and lower slips
35
What lower outer diameter matched get out of a predicament or an embarrassing situation hole, correspondence is got out of a predicament or an embarrassing situation the lower slips cylinder in hole
38
On be provided with the lower bayonet socket corresponding with lower fixture block
39
, lower fixture block
37
Lay respectively at lower bayonet socket
39
In；At hole and the deblocking mandrel of topping bar
4
Between be provided with locking pawl
40
, locking pawl
40
Cylindrically, at locking pawl
40
Lower inner wall on integrally be fixed with locking in land
41
, land in locking
41
Lower section is to locking pawl
40
Top locking pawl
40
On be intervally distributed with axial grid
42
, at locking pawl
40
Upper inside wall on be provided with crown locking internal tooth down
43
, lock external tooth
23
With locking internal tooth
43
Match.
Packing element assembly can use in existing known technology above packing element assembly or
/
Lower with the effect of active force below packing element assembly can the packing element device of spreading；Upper slips
12
At upper slips stopper slot and upper slips ring
11
Constraint under can be along upper slips seat
6
Slide axially, lower slips
35
At lower slips stopper slot and lower slips ring
10
Constraint under can be along lower slips seat
24
Slide axially；This utility model uses to enter under steel wire instrument, and jarring sets；Salvaging with steel wire instrument during deblocking, whole operation process is simple, convenient, it is not necessary to special tool(s), equipment；Locking pawl in this utility model
40
, lock-out state can be kept after packing element assembly compresses, make packing element assembly be in compressive state all the time, it is ensured that to seal；Locking pawl
40
Flexible, at deblocking mandrel
4
On when carrying, locking pawl
40
Can open, make lockout failure；This utility model under enter to set after, upwards jarring, shear and give up pin
21
After, back-off sub
1
Proposing well head with steel wire instrument, this utility model removes back-off sub
1
Outer remainder is stayed in oil pipe, exposes fishing head simultaneously
3
, it is beneficial to deblocking salvage next time；After this utility model sets in oil pipe, unseal mandrel
4
Not by power up or down, set reliable；During deblocking, unseal mandrel
4
On carry, through hole exposes, and two-way pressure balances, and instrument deblocking is reliable.
Detailed description of the invention of the present utility model is:
When setting, connect blanking plug in reclaimed oil pipe of the present utility model with entering instrument under steel wire, when precalculated position during this utility model is lowered into well, enter instrument under steel wire and the most quickly transfer, make lower slips under gravity
35
Open, block tube inner wall, then jarring back-off sub downwards
1
, cut off and set pin
19
, make upper slips cylinder
16
And upper slips
12
Move down, and work as connecting pin
18
Come downwards to spacing hole
8
Bottom time, drive upper slips seat
6
Move down, now, connecting pin
18
With upper slips
12
, upper slips cylinder
16
, upper slips seat
6
Along long axis hole
5
The most descending, extrude packing element assembly, simultaneously locking pawl
40
At locking internal tooth
43
With locking external tooth
23
Cooperation under lock packing element assembly simultaneously, keeping packing element assembly is compressive state, through repeatedly jarring, can make the complete compression-expansion of packing element assembly, seal space in oil pipe, now, upper slips
12
And lower slips
35
All it is snapped on tube inner wall, reaches to block the purpose of oil pipe, after this utility model sets, upwards jarring, cut off pin of giving up
21
, back-off sub
1
Propose well head with steel wire instrument, stay except back-off sub in oil pipe
1
This utility model device, it is achieved oil pipe inner blocking.
During deblocking, under enter steel wire instrument, salvage fishing head
3
After, upwards jarring, cut off deblocking pin
31
, unseal mandrel
4
Upper shifting, now, through hole exposes, and makes deblocking mandrel
4
Interior fluid and lower slips seat
24
External fluid communicates, and makes packing element assembly two-way pressure balance, when deblocking mandrel
4
When moving in continuation, lower mandrel
30
Act on land in locking
41
On, make locking pawl
40
Outwardly open, lockout failure, the compression elasticity release of packing element assembly, continuation carries deblocking mandrel
4
, unseal mandrel
4
Drive connecting pin
18
, connecting pin
18
Drive upper slips cylinder
16
Upper shifting, makes upper slips
12
Deblocking, meanwhile, upper slips seat
6
Upper shifting, packing element assembly resets, communicates, continuation carries deblocking mandrel in oil pipe
4
, lower slips seat
24
Upper shifting, lower slips
35
Deblocking.
Can according to actual needs, make blanking plug in above-mentioned reclaimed oil pipe to optimize further or
/
And improvement:
Such as accompanying drawing
1
、
2
Shown in, packing element assembly includes packing element mandrel
44
, connecting cylinder
46
, packing element
47
And spacer ring
48
；Packing element mandrel
44
Upper end outer wall be integrally fixed with connection ring set
45
, connect ring set
45
Inwall be connected annular groove with slips and be fixedly installed togather, at packing element mandrel
44
Bottom on be set with connecting cylinder
46
, connecting cylinder
46
Bottom outer wall on be provided with lower slips annular groove be installed, lower slips installs annular groove and lower slips seat
24
Upper inside wall be fixedly installed togather, at connecting cylinder
46
The packing element mandrel of lower section
44
Crown locking external tooth upward it is provided with on outer wall
23
；Connecting ring set
45
With connecting cylinder
46
Between packing element mandrel
44
On be set with the packing element of at least two the most successively
47
, adjacent two packing elements
47
Between packing element mandrel
44
On be set with spacer ring
48
, connect ring set
45
Lower end outside be provided with conical ring platform
49
, connecting cylinder
46
Upper end outside be provided with conical ring platform
49
, spacer ring
48
Upper and lower side outside be respectively arranged with conical ring platform
49
, packing element
47
Two ends, upper end outside in conical ring platform
49
The conical surface matched.Described packing element
47
For hollow rubber cylinder, outside two ends in conical ring platform
49
The conical surface matched, so, packing element
47
Two ends can be connected ring set
45
, spacer ring
48
And connecting cylinder
46
At packing element
47
Preferably coordinate after compression-expansion, it is ensured that packing element
47
Expand the reliability of work；When setting, upper slips seat
6
Move down, extrude packing element mandrel
44
Move down, compress packing element
47
, when packing element mandrel
44
During moving down, locking pawl
40
At locking internal tooth
43
With locking external tooth
23
Cooperation under lock packing element mandrel simultaneously
44
, keep packing element
47
In compressive state；During deblocking, after through hole exposes, unseal mandrel
4
Interior fluid and lower slips seat
24
External fluid communicates, and makes packing element
47
Pressure balance, when deblocking mandrel
4
When moving in continuation, lower mandrel
30
Act on land in locking
41
On, make locking pawl
40
Outwardly open, lockout failure, packing element
47
Compression elasticity release, packing element
47
Reset.
Such as accompanying drawing
1
Shown in, connecting cylinder
46
Inwall on be provided with sealing ring
50
, lower slips is installed and is provided with sealing ring on annular groove
50
, at deblocking pin
31
Above and below lower mandrel
30
Sealing ring it is respectively arranged with on outer wall
50
.At connecting cylinder
46
Inwall and lower slips install on annular groove and be respectively provided with sealing ring
50
, make connecting cylinder
46
The effect of slipper seal can be played, at deblocking pin during moving up and down
31
Above and below lower mandrel
30
Sealing ring it is respectively arranged with on outer wall
50
So that lower mandrel
30
Before upper shifting, it is possible to preferably seal lower mandrel
30
With lower slips seat
24
。
Such as accompanying drawing
1
、
2
Shown in, upper slips
12
Bottom outer wall on be distributed crown towards the grappling tooth of horizontal process
14
；Or
/
With, at lower slips
35
External wall of upper portion on be distributed crown down have grappling tooth
14
；Or
/
With, lower frustum
33
Tapering more than upper frustum
7
Tapering.Lower slips
35
Crown is down, the most fashionable, and blanking plug in jarring reclaimed oil pipe of the present utility model, makes lower slips from the top down
35
Preferably it is engaged tube inner wall, sets the support force providing bigger for blanking plug in reclaimed oil pipe of the present utility model；Upper slips
12
Crown is level, beneficially upper slips
12
And upper slips seat
6
Move downward, it is simple to packing element
47
Set；Upper frustum
7
With lower frustum
33
Tapering different, lower frustum
33
Tapering is more than upper frustum
7
Tapering, under fashionable be conducive to blanking plug in reclaimed oil pipe of the present utility model to set, be conducive to blanking plug deblocking in reclaimed oil pipe of the present utility model when above proposing.
Such as accompanying drawing
1
、
2
Shown in, correspondence is installed axocoel
2
The back-off sub on top
1
On be circumferentially radially distributed with at least one balance pipe
51
.Balance pipe
51
Be disposed to convenient enter under steel wire under instrument pressure or on propose back-off sub
1
During, it is possible to make the interior outer fluid of this utility model device be connected, it is to avoid this utility model device builds the pressure to be obstructed in implementation process affects work process.
Such as accompanying drawing
1
Shown in, fishing head
3
Lower inner wall with deblocking mandrel
4
External wall of upper portion be threadably secured and be installed together, lower slips seat
24
Bottom and installation cavity
26
Inwall be threadably secured and be installed together, unseal mandrel
4
Bottom outer wall and lower mandrel
30
Upper inside wall be threadably secured and be installed together, connect ring set
45
Inwall be connected annular groove with slips and be threadably secured and be installed together, lower slips seat
24
Upper inside wall and lower slips annular groove is installed is threadably secured and is installed together.Threaded convenient installation and dismounting.
This utility model uses and enters instrument under steel wire, downward jarring back-off sub when setting
1
Set, set backward upper jarring back-off sub
1
；Enter instrument under steel wire during deblocking and salvage fishing head
3
, directly on carry and just can unseal, simple to operate；Locking pawl in this utility model
40
, packing element can be kept after stopper sets
47
Compression, it is ensured that closure is good, when needs unseal, locking pawl
40
Can unlock, make packing element mandrel
44
Mobile, packing element
47
Resilience；Upper slips seat
6
With lower slips seat
24
The conical surface in opposite directions, i.e. upper slips seat
6
The conical surface upwards, lower slips seat
24
The conical surface is downward, and centre is provided with packing element assembly, when there being pressure differential in oil pipe, side's motion that a directional pressure that pressure is big is little, the slip spider conical surface of the side that pressure is little just struts slips, it is provided that bigger gmatjpdumamics, do not move after making this utility model closure, it is ensured that seal；This utility model can set optional position in oil pipe, and closure pressure is high, meets various working condition requirement.
Above technical characteristic constitutes embodiment of the present utility model, and it has stronger adaptability and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (12)
1. blanking plug in a reclaimed oil pipe, it is characterised in that include back-off sub, fishing head, deblocking mandrel, upper slips cylinder, packing element mandrel, lower slips seat, lower contact, lower mandrel, locking pawl；nullThere is downward opening upper installation axocoel the inside of back-off sub，Fishing head is sleeved in installation axocoel，The lower inner wall of fishing head is fixedly installed togather with the external wall of upper portion of deblocking mandrel，The top of deblocking mandrel is circumferentially evenly arranged with the long axis hole of at least two，It is set with upper slips seat on deblocking mandrel below fishing head，The top external diameter of upper slips seat is less than lower outer diameter，The middle part outer wall of upper slips seat is the upper frustum of transition upper slips seat external wall of upper portion and bottom outer wall，The top of upper slips seat is provided with the spacing hole corresponding with long axis hole，The axial length of spacing hole is less than the axial length of long axis hole，The upper protruding block of at least three circumferentially it is evenly arranged with in upper slips seat external wall of upper portion below spacing hole，Upper slips stopper slot is formed between adjacent two upper protruding blocks，In upper slips stopper slot, by upper slips ring, upper slips is installed，The lower inner wall of upper slips is for match upper conical with upper frustum，The top external diameter of upper slips is less than the lower outer diameter of upper slips，Grappling tooth is distributed on the bottom outer wall of upper slips，It is provided with fixture block on the upper end outer wall of upper slips，Upper slips jacket casing is contained on the upper slips seat below back-off sub，The hole of topping bar that internal diameter matches with upper slips top external diameter is arranged at the bottom of upper slips cylinder，Correspondence top bar hole upper slips cylinder on be provided with the upper latch notch corresponding with upper fixture block，Upper fixture block lays respectively in upper latch notch，It is installed with connecting pin on upper slips cylinder above upper latch notch，Connecting pin is positioned at spacing hole and the top of long axis hole，It is installed with between upper slips cylinder and upper slips seat and sets pin，It is provided with, between back-off sub and upper slips seat, ring of giving up，Give up and be fixedly installed togather by pin of giving up between ring and back-off sub，It is installed with C-shaped ring on upper slips seat outer wall above ring of giving up，The external diameter of C-shaped ring is more than the internal diameter of ring of giving up，It is provided with slips on the bottom outer wall of upper slips seat and connects outer groove，It is set with packing element assembly on deblocking mandrel below upper slips seat，Slips connection annular groove is fixedly installed togather with the top of packing element assembly；nullThe bottom of packing element assembly is provided with lower slips and installs annular groove，Install at lower slips and be provided with crown locking external tooth upward on the packing element assembly inside annular groove，The upper inside wall of lower slips seat and lower slips are installed annular groove and are fixedly installed togather，Opening up installation cavity is had in the top of lower contact，The bottom of lower slips seat is fixedly installed togather with the inwall of installation cavity，There is opening up lower installation axocoel the inside of lower slips seat，There is top bar hole and the hole of getting out of a predicament or an embarrassing situation that internal diameter reduces successively the inside of lower installation axocoel，Lower mandrel is positioned at the bottom in hole of getting out of a predicament or an embarrassing situation，The external diameter of lower mandrel and the diameter compatible in hole of getting out of a predicament or an embarrassing situation，The bottom outer wall of deblocking mandrel is fixedly installed togather with the upper inside wall of lower mandrel，Deblocking pin it is installed with between lower mandrel and lower slips seat，It is provided with through hole with on the deblocking pin lower mandrel on same RADIAL，The bottom outer wall of lower slips seat is the grappling installation annular groove that external diameter is less than lower slips seat top external diameter，Grappling is installed annular groove to grappling and installed the lower slips seat outer wall above annular groove is the lower frustum that annular groove is installed in transition lower slips seat outer wall and grappling，The lower protruding block being circumferentially evenly arranged with at least three on annular groove is installed in grappling，Lower slips stopper slot is formed between adjacent two lower protruding blocks，In lower slips stopper slot, by lower slips ring, lower slips is installed，The lower outer diameter of lower slips is less than the external diameter of lower slips，The upper inside wall of lower slips is the inferior pyramidal platform that matches with lower frustum，Grappling tooth is distributed in the external wall of upper portion of lower slips，The lower fixture block of at least two circumferentially it is evenly arranged with on the lower end outer wall of lower slips，Lower slips jacket casing is contained on the lower slips seat above lower contact，The hole of getting out of a predicament or an embarrassing situation that internal diameter and lower slips lower outer diameter match is arranged at the top of lower slips cylinder，Correspondence get out of a predicament or an embarrassing situation hole lower slips cylinder on be provided with the lower bayonet socket corresponding with lower fixture block，Lower fixture block lays respectively in lower bayonet socket；It is provided with locking pawl between hole and deblocking mandrel topping bar, locking pawl is cylindrically, the lower inner wall of locking pawl is integrally fixed with land in locking, to the locking pawl on locking pawl top, it is intervally distributed with axial grid below land in locking, the upper inside wall of locking pawl is provided with crown locking internal tooth down, locking external tooth and locking internal tooth match.
Blanking plug in reclaimed oil pipe the most according to claim 1, it is characterised in that packing element assembly includes packing element mandrel, packing element, spacer ring and connecting cylinder；The upper end outer wall of packing element mandrel is integrally fixed with connection ring set, the inwall of connection ring set is connected annular groove with slips and is fixedly installed togather, the bottom of packing element mandrel is set with connecting cylinder, it is provided with lower slips on the bottom outer wall of connecting cylinder and annular groove is installed, lower slips installation annular groove is fixedly installed togather with the upper inside wall of lower slips seat, and the packing element mandrel outer wall below connecting cylinder is provided with crown locking external tooth upward；The packing element mandrel connected between ring set and connecting cylinder is set with the packing element of at least two the most successively, it is set with spacer ring on packing element mandrel between adjacent two packing elements, the lower end outside connecting ring set is provided with conical ring platform, conical ring platform it is provided with outside the upper end of connecting cylinder, conical ring platform it is respectively arranged with, in the conical surface matched with conical ring platform outside the two ends, upper end of packing element outside the upper and lower side of spacer ring.
Blanking plug in reclaimed oil pipe the most according to claim 2, it is characterised in that be provided with sealing ring on the inwall of connecting cylinder, lower slips is installed and is provided with sealing ring on annular groove, and the lower mandrel outer wall above and below deblocking pin is respectively arranged with sealing ring.
Blanking plug in reclaimed oil pipe the most according to claim 1, it is characterised in that be distributed the crown grappling tooth towards horizontal process on the bottom outer wall of upper slips；Or/and, in the external wall of upper portion of lower slips be distributed crown down have grappling tooth；Or/and, the tapering of lower frustum is more than the tapering of upper frustum.
5. according to blanking plug in the reclaimed oil pipe described in Claims 2 or 3, it is characterised in that be distributed the crown grappling tooth towards horizontal process on the bottom outer wall of upper slips；Or/and, in the external wall of upper portion of lower slips be distributed crown down have grappling tooth；Or/and, the tapering of lower frustum is more than the tapering of upper frustum.
Blanking plug in reclaimed oil pipe the most according to claim 1, it is characterised in that install the balance pipe being circumferentially radially distributed with at least one in the back-off sub on axocoel top in correspondence.
7. according to blanking plug in the reclaimed oil pipe described in Claims 2 or 3, it is characterised in that install the balance pipe being circumferentially radially distributed with at least one in the back-off sub on axocoel top in correspondence.
Blanking plug in reclaimed oil pipe the most according to claim 5, it is characterised in that install the balance pipe being circumferentially radially distributed with at least one in the back-off sub on axocoel top in correspondence.
9. according to blanking plug in the reclaimed oil pipe described in Claims 2 or 3, it is characterized in that the lower inner wall of fishing head is threadably secured with the external wall of upper portion of deblocking mandrel to be installed together, the bottom of lower slips seat is threadably secured with the inwall of installation cavity and is installed together, the bottom outer wall of deblocking mandrel is threadably secured with the upper inside wall of lower mandrel and is installed together, connecting the inwall of ring set to be connected annular groove with slips and be threadably secured and be installed together, the upper inside wall of lower slips seat and lower slips installation annular groove are threadably secured and are installed together.
Blanking plug in reclaimed oil pipe the most according to claim 5, it is characterized in that the lower inner wall of fishing head is threadably secured with the external wall of upper portion of deblocking mandrel to be installed together, the bottom of lower slips seat is threadably secured with the inwall of installation cavity and is installed together, the bottom outer wall of deblocking mandrel is threadably secured with the upper inside wall of lower mandrel and is installed together, connecting the inwall of ring set to be connected annular groove with slips and be threadably secured and be installed together, the upper inside wall of lower slips seat and lower slips installation annular groove are threadably secured and are installed together.
11. blanking plug in reclaimed oil pipe according to claim 7, it is characterized in that the lower inner wall of fishing head is threadably secured with the external wall of upper portion of deblocking mandrel to be installed together, the bottom of lower slips seat is threadably secured with the inwall of installation cavity and is installed together, the bottom outer wall of deblocking mandrel is threadably secured with the upper inside wall of lower mandrel and is installed together, connecting the inwall of ring set to be connected annular groove with slips and be threadably secured and be installed together, the upper inside wall of lower slips seat and lower slips installation annular groove are threadably secured and are installed together.
Blanking plug in 12. reclaimed oil pipes according to claim 8, it is characterized in that the lower inner wall of fishing head is threadably secured with the external wall of upper portion of deblocking mandrel to be installed together, the bottom of lower slips seat is threadably secured with the inwall of installation cavity and is installed together, the bottom outer wall of deblocking mandrel is threadably secured with the upper inside wall of lower mandrel and is installed together, connecting the inwall of ring set to be connected annular groove with slips and be threadably secured and be installed together, the upper inside wall of lower slips seat and lower slips installation annular groove are threadably secured and are installed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620074397.3U CN205577937U (en) | 2016-01-26 | 2016-01-26 | But blanking plug in recovery type oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620074397.3U CN205577937U (en) | 2016-01-26 | 2016-01-26 | But blanking plug in recovery type oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205577937U true CN205577937U (en) | 2016-09-14 |
Family
ID=56881955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620074397.3U Withdrawn - After Issue CN205577937U (en) | 2016-01-26 | 2016-01-26 | But blanking plug in recovery type oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205577937U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484696A (en) * | 2016-01-26 | 2016-04-13 | 新疆华油油气工程有限公司 | Recyclable blanking plug in oil tubing |
| CN110080697A (en) * | 2019-04-19 | 2019-08-02 | 新疆华油油气工程有限公司 | Tubing string unstability Balance Treatment device |
| CN111927390A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN112360392A (en) * | 2020-12-08 | 2021-02-12 | 中国石油天然气集团有限公司 | Maintenance method for oil pipe plugging bridge plug and main valve of gas production tree |
-
2016
- 2016-01-26 CN CN201620074397.3U patent/CN205577937U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484696A (en) * | 2016-01-26 | 2016-04-13 | 新疆华油油气工程有限公司 | Recyclable blanking plug in oil tubing |
| CN105484696B (en) * | 2016-01-26 | 2018-01-16 | 新疆华油油气工程有限公司 | Blanking plug in reclaimed oil pipe |
| CN110080697A (en) * | 2019-04-19 | 2019-08-02 | 新疆华油油气工程有限公司 | Tubing string unstability Balance Treatment device |
| CN111927390A (en) * | 2020-08-17 | 2020-11-13 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN111927390B (en) * | 2020-08-17 | 2021-10-29 | 川南航天能源科技有限公司 | Anchoring device for safety valve in oil pipe |
| CN112360392A (en) * | 2020-12-08 | 2021-02-12 | 中国石油天然气集团有限公司 | Maintenance method for oil pipe plugging bridge plug and main valve of gas production tree |
| CN112360392B (en) * | 2020-12-08 | 2022-03-04 | 中国石油天然气集团有限公司 | Maintenance method for oil pipe plugging bridge plug and main valve of gas production tree |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105484696B (en) | Blanking plug in reclaimed oil pipe | |
| CN104213868B (en) | Desirable bore anchor packer | |
| CN205577937U (en) | But blanking plug in recovery type oil pipe | |
| CN206693997U (en) | Oil field separates adopts technology tubular column | |
| CN208950556U (en) | Easily unseal preset underground throttle | |
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN104832135B (en) | It is a kind of to connect automatic switch for the oil jacket that submerged electric oil pump well sand control is buried | |
| CN102536183A (en) | Underground gas injection pipe column | |
| CN104047563B (en) | Deblocking packer is pressed under hydraulic setting | |
| CN102747979A (en) | Bidirectional self-locking type external casing packer | |
| CN106761577A (en) | Oil field separates adopts technology tubular column | |
| CN103388469A (en) | Filling tool | |
| CN208734311U (en) | A kind of permanent type well completion packer that mechanical can be given up | |
| CN207004474U (en) | Blanking plug in a kind of multi-functional oil water well tube | |
| CN204960825U (en) | Hydraulic pressure release sub | |
| CN202596695U (en) | Downhole gas-injection tubular column | |
| CN203362102U (en) | Straddle type packer capable of repeatedly conducting setting | |
| CN206233895U (en) | Water plugging of horizontal well process pipe string | |
| CN202810774U (en) | Bidirectional self-locking outer packer of casing | |
| CN104405331B (en) | A kind of ocean deepwater well tubing packer | |
| CN201723196U (en) | Self-sealing setting ball seat | |
| CN215108847U (en) | Novel multifunctional bridge plug packer | |
| CN110566450B (en) | Hydraulic control blowout prevention device for oil pipe under pump | |
| CN200985769Y (en) | Lifting oil layer switch | |
| CN105201443B (en) | A kind of blanking plug in oil pipe launched for steel wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160914 Effective date of abandoning: 20180116 |
|
| AV01 | Patent right actively abandoned |