CN105484696B - Blanking plug in reclaimed oil pipe - Google Patents
Blanking plug in reclaimed oil pipe Download PDFInfo
- Publication number
- CN105484696B CN105484696B CN201610050924.1A CN201610050924A CN105484696B CN 105484696 B CN105484696 B CN 105484696B CN 201610050924 A CN201610050924 A CN 201610050924A CN 105484696 B CN105484696 B CN 105484696B
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- China
- Prior art keywords
- slipses
- wall
- mandrel
- seat
- annular groove
- 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.)
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- 238000012856 packing Methods 0.000 claims abstract description 80
- 238000009434 installation Methods 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000004323 axial length Effects 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 210000003128 head Anatomy 0.000 description 16
- 239000012530 fluid Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000000720 eyelash Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000002478 hand joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to blocking device technical field in oil pipe, is blanking plug in a kind of reclaimed oil pipe, and it includes back-off sub, fishing head, deblocking mandrel, upper slipses cylinder, packing element mandrel, lower slipses seat, lower contact, lower mandrel, locking pawl；There is downward opening upper installation axocoel the inside of back-off sub, and fishing head is sleeved on installation axle intracavitary, and the lower inner wall of fishing head is fixedly installed togather with unsealing the external wall of upper portion of mandrel, and the top for unsealing mandrel is circumferentially evenly arranged with long axis hole.Reasonable and compact in structure of the present invention, easy to use, the present invention, which sets and unsealed, uses steel wire tripping in instrument, and set and unseal that operation is simple, can also provide bigger snap-in force in the case where ensureing to block good situations, the present invention is not moved after blocking, ensure sealing, meanwhile the present invention can be reclaimed after the completion of deblocking, the present invention can be set optional position in oil pipe, it is high to block pressure, meets various working condition requirements, effectively reduces cost.
Description
Technical field
The present invention 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, lower tubular column is often played, in order to prevent blowout, well control equipment will be installed, sent out
Moment closing well remotely can be implemented to annular space when raw overflow or blowout, but the blowout having is also occurred in tubing string, due to oil pipe
Connection be fine thread connection, occur overflow after installing wellhead cock sometimes have difficulties, cause gas blowout accident.Particularly in carbonic acid
Rock salt reservoir is constructed, and is often under well killing fluid constantly leakage state during well workover and is constructed, and is used in order to which equilibrium strata pressure is most
" cage " method, blowout prevention annoyings the well workover technology person of entering always in tubing string during lift pipe string, particularly when deep-well is constructed, plays a pipe
Post generally requires for a long time, and the hour of danger of blowout is present, and it is urgent that bottom in tubing string, which effectively block, in lift pipe string
The eyebrows and eyelashes the problem of.In addition, in production leak stopping water when be also required to block in oil pipe.Existing blanking plug in oil pipe is mostly once
Property block, need during opening to bore mill or proposed with tubing string, under it is fashionable need specific purpose tool, can not reclaim, be bored except trouble after tripping in,
It adds additional operating cost.We are at the thinking of research：A kind of blanking plug in oil pipe that can use steel wire tripping in is designed, can be
Optional position sets closure in oil pipe, can be reclaimed after the completion of operation using steel wire instrument, recovers latus rectum in oil pipe.
The content of the invention
The invention provides blanking plug in a kind of reclaimed oil pipe, overcomes the deficiency of above-mentioned prior art, it can have
Effect solve existing blanking plug in oil pipe it is cumbersome, under it is fashionable need can not to reclaim after specific purpose tool and tripping in operation into
The problem of this is high.
The technical scheme is that realized by following measures：Blanking plug in a kind of reclaimed oil pipe, including
Back-off sub, fishing head, deblocking mandrel, upper slipses cylinder, packing element mandrel, lower slipses seat, lower contact, lower mandrel, locking pawl；Lose
There is downward opening upper installation axocoel the inside of hand joint, and fishing head is sleeved on installation axle intracavitary, the lower inner wall of fishing head
External wall of upper portion with unsealing mandrel is fixedly installed togather, and the top for unsealing mandrel is circumferentially evenly arranged with least two length
Axis hole, upper slipses seat is set with the deblocking mandrel below fishing head, the top external diameter of upper slipses seat is less than lower outer diameter, upper card
The middle part outer wall of watt seat is transition upper slipses seat external wall of upper portion and the upper frustum of bottom outer wall, the top of upper slipses seat be provided with
The corresponding spacing hole of long axis hole, the axial length of spacing hole are less than the axial length of long axis hole, the upper card below spacing hole
At least three upper protruding block is circumferentially evenly arranged with watt seat external wall of upper portion, upper slipses limit is formed between two neighboring upper protruding block
Position groove, upper slipses are provided with upper slipses stopper slot by upper slipses ring, and the lower inner wall of upper slipses is to match with upper frustum
Taper platform is closed, the top external diameter of upper slipses is less than the lower outer diameter of upper slipses, grappling is distributed with the bottom outer wall of upper slipses
Tooth, fixture block is provided with the upper end outer wall of upper slipses, upper slipses jacket casing is on the upper slipses seat below back-off sub, upper card
The top bar hole that internal diameter matches with upper slipses top external diameter is arranged at the bottom of watt cylinder, is provided with the upper slipses cylinder in corresponding top bar hole
The upper latch notch corresponding with upper fixture block, upper fixture block in upper latch notch, fix peace respectively on the upper slipses cylinder above upper latch notch
Equipped with connecting pin, connecting pin is located in the top of spacing hole and long axis hole, is fixedly mounted between upper slipses cylinder and upper slipses seat
Pin is set, ring of giving up is provided between back-off sub and upper slipses seat, gives up between ring and back-off sub by giving up
Pin is fixedly installed togather, and is installed with C-shaped ring on the upper slipses seat outer wall above ring of giving up, the external diameter of C-shaped ring is big
Annular groove, the deblocking core below upper slipses seat are connected in being provided with slips on the internal diameter for ring of giving up, the bottom outer wall of upper slipses seat
Packing element assembly is set with axle, the top of slips connection annular groove and packing element assembly is fixedly installed togather；The bottom of packing element assembly
Lower slipses installation annular groove is provided with, is provided with the packing element assembly on the inside of lower slipses installation annular groove outside the locking of crown upward
Tooth, upper inside wall and the lower slipses installation annular groove of lower slipses seat are fixedly installed togather, had in the top of lower contact opening up
Installation cavity, the bottom of lower slipses seat and the inwall of installation cavity be fixedly installed togather, and the inside of lower slipses seat has opening up
Lower installation axocoel, the inside top bar hole that there is internal diameter to reduce successively and hole of getting out of a predicament or an embarrassing situation of lower installation axocoel, under lower mandrel is located at
In the bottom of stepped hole, the internal diameter in the external diameter of lower mandrel and hole of getting out of a predicament or an embarrassing situation matches, and unseals the bottom outer wall of mandrel and lower mandrel
Upper inside wall is fixedly installed togather, and deblocking pin is installed between lower mandrel and lower slipses seat, is existed with deblocking pin
Through hole is provided with lower mandrel on same RADIAL, the bottom outer wall of lower slipses seat is less than lower slipses seat top external diameter for external diameter
Grappling installation annular groove, grappling install annular groove to grappling installation annular groove above lower slipses seat outer wall be transition lower slipses seat outer wall
The lower frustum of annular groove is installed with grappling, at least three lower protruding block is circumferentially evenly arranged with grappling installation annular groove, it is adjacent
Lower slipses stopper slot is formed between two lower protruding blocks, lower slipses, lower card are provided with by lower slipses ring in lower slipses stopper slot
Watt lower outer diameter be less than the external diameters of lower slipses, the upper inside walls of lower slipses is to be engaged inferior pyramidal platform, lower slipses with lower frustum
External wall of upper portion on grappling tooth is distributed with, at least two lower fixture block is circumferentially evenly arranged with the lower end outer wall of lower slipses,
For lower slipses jacket casing on the lower slipses seat above lower contact, the top of lower slipses cylinder has internal diameter to match with lower slipses lower outer diameter
Hole of getting out of a predicament or an embarrassing situation, be provided with the under bayonet corresponding with lower fixture block on the lower slipses cylinder in corresponding hole of getting out of a predicament or an embarrassing situation, lower fixture block distinguishes position
In under bayonet；Locking pawl is provided between top bar hole and deblocking mandrel, locking pawl is cylindrical, in locking pawl
Lower inner wall on be integrally fixed with land in locking, in locking below land between on the locking pawl on locking pawl top
Every axial grid is distributed with, be provided with crown locking internal tooth directed downwardly in the upper inside wall of locking pawl, locking external tooth and
Locking internal tooth is engaged.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
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
There is connection ring set, connect the inwall of ring set and slips is connected annular groove and is fixedly installed togather, be set with the bottom of packing element mandrel
There is connecting cylinder, lower slipses installation annular groove is provided with the bottom outer wall of connecting cylinder, lower slipses installation annular groove is upper with lower slipses seat
Portion's inwall is fixedly installed togather, and the locking external tooth of crown upward is provided with the packing element mandrel outer wall below connecting cylinder；
It is set with least two packing element, two neighboring packing element on packing element mandrel between connection ring set and connecting cylinder successively from top to bottom
Between packing element mandrel on be set with spacer ring, the lower end outside for connecting ring set is provided with conical ring platform, is set on the outside of the upper end of connecting cylinder
Conical ring platform is equipped with, conical ring platform is respectively arranged with the outside of the upper and lower side of spacer ring, is in match with conical ring platform on the outside of the upper end both ends of packing element
The conical surface.
Sealing ring is provided with the inwall of above-mentioned connecting cylinder, sealing ring is provided with lower slipses installation annular groove, in solution offset
Sealing ring is respectively arranged with lower mandrel outer wall above and below nail.
Crown is distributed on the bottom outer wall of above-mentioned upper slipses towards the grappling tooth of horizontal process；Or/and on the top of lower slipses
Crown is directed downwardly grappling tooth for distribution on outer wall；Or/and the taper of lower frustum is more than the taper of upper frustum.
Installed in above-mentioned correspondence and be circumferentially radially distributed with least one balance pipe in the back-off sub on axocoel top.
The lower inner wall of above-mentioned fishing head and the external wall of upper portion of deblocking mandrel are threadably secured and are installed together, lower slipses
The bottom of seat and the inwall of installation cavity are threadably secured and are installed together, and unseal the bottom outer wall of mandrel and the top of lower mandrel
Inwall, which is threadably secured, to be installed together, and connects the inwall of ring set and slips is connected annular groove and is threadably secured installed in one
Rise, the upper inside wall of lower slipses seat is threadably secured with lower slipses installation annular groove to be installed together.
Reasonable and compact in structure of the present invention, easy to use, the present invention, which sets and unsealed, uses steel wire tripping in instrument, and
Set and unseal that operation is simple, can also provide bigger snap-in force in the case where ensureing to block good situations, make closure of the present invention
Do not move afterwards, ensure sealing, meanwhile, the present invention can be reclaimed after the completion of deblocking, and the present invention can be any in oil pipe
Position is set, and closure pressure is high, meets various working condition requirements, effectively reduces cost.
Brief description of the drawings
Accompanying drawing 1 is the top half main view half section schematic of the embodiment of the present invention.
Accompanying drawing 2 is the latter half main view half section schematic of the embodiment of the present invention.
Accompanying drawing 3 is the main view section view mplifying structure schematic diagram of locking pawl in the present invention.
Accompanying drawing 4 for accompanying drawing 3 A-A to cross section structure diagram.
Coding in accompanying drawing is respectively：1 is back-off sub, and 2 be upper installation axocoel, and 3 be fishing head, and 4 be to unseal mandrel, 5
It is upper slipses seat for long axis hole, 6,7 be upper frustum, and 8 be spacing hole, and 9 be upper protruding block, and 10 be lower slipses ring, and 11 be upper slipses ring,
12 be upper slipses, and 13 be upper conical, and 14 be grappling tooth, and 15 be upper fixture block, and 16 be upper slipses cylinder, and 17 be upper latch notch, and 18 be company
Pin, 19 is set pin, and 20 be ring of giving up, and 21 be pin of giving up, and 22 be C-shaped ring, and 23 be locking external tooth, and 24 be lower slipses
Seat, 25 be lower contact, and 26 be installation cavity, and 27 be lower installation axocoel, and 28 be top bar hole, and 29 be hole of getting out of a predicament or an embarrassing situation, and 30 be lower mandrel,
31 be deblocking pin, and 32 be that annular groove is installed in grappling, and 33 be lower frustum, and 34 be lower protruding block, and 35 be lower slipses, and 36 be inferior pyramidal platform,
37 be lower fixture block, and 38 be lower slipses cylinder, and 39 be under bayonet, and 40 be locking pawl, and land in 41 lockings, 42 be grid, and 43 be lock
Determine internal tooth, 44 be packing element mandrel, and 45 be connection ring set, and 46 be connecting cylinder, and 47 be packing element, and 48 be spacer ring, and 49 be conical ring platform, and 50 are
Sealing ring, 51 be balance pipe.
Embodiment
The present invention is not limited by following embodiments, can technique according to the invention scheme and actual conditions it is specific to determine
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of each part is according to Figure of description 1
Butut mode be described, such as：The position relationship of upper and lower, left and right etc. is that the Butut direction of foundation Figure of description is come
Determine.
With reference to embodiment and accompanying drawing, the invention will be further described：
As shown in accompanying drawing 1,2,3, blanking plug includes back-off sub 1, fishing head 3, deblocking mandrel in the reclaimed oil pipe
4th, upper slipses cylinder 6, lower slipses seat 24, lower contact 25, lower mandrel 30, locking pawl 40；The inside of back-off sub 1 has opening down
Upper installation axocoel 2, fishing head 3 is sleeved in installation axocoel 2, the lower inner wall of fishing head 3 with outside the top of deblocking mandrel 4
Wall is fixedly installed togather, and the top of deblocking mandrel 4 is circumferentially evenly arranged with least two long axis hole 5, the lower section of fishing head 3
Deblocking mandrel 4 on be set with upper slipses seat 6, the top external diameter of upper slipses seat 6 is less than lower outer diameter, the middle part of upper slipses seat 6
Outer wall is the external wall of upper portion of transition upper slipses seat 6 and the upper frustum 7 of bottom outer wall, and the top of upper slipses seat 6 is provided with and long axis hole 5
Corresponding spacing hole 8, the axial length of spacing hole 8 are less than the axial length of long axis hole 5, the upper slipses below spacing hole 8
At least three upper protruding block 9 is circumferentially evenly arranged with 6 external wall of upper portion of seat, upper slipses are formed between two neighboring upper protruding block 9
Stopper slot, upper slipses 12 are provided with by upper slipses ring 11 in upper slipses stopper slot, the lower inner walls of upper slipses 12 be with it is upper
Frustum 7 is engaged upper conical 13, and the top external diameter of upper slipses 12 is less than the lower outer diameter of upper slipses 12, the bottom of upper slipses 12
Grappling tooth 14 is distributed with outer wall, fixture block 15 is provided with the upper end outer wall of upper slipses 12, upper slipses cylinder 16, which is sleeved on, gives up
On the upper slipses seat 6 of the lower section of joint 1, the top bar that internal diameter matches with the top external diameter of upper slipses 12 is arranged at the bottom of upper slipses cylinder 16
Hole, corresponds to and the upper latch notch 17 corresponding with upper fixture block 15 is provided with the upper slipses cylinder 16 in top bar hole, and upper fixture block 15 distinguishes position
In in upper latch notch 17, being installed with connecting pin 18 on the upper slipses cylinder 16 above upper latch notch 17, connecting pin 18 is positioned at spacing
In hole 8 and the top of long axis hole 5, it is installed between upper slipses cylinder 16 and upper slipses seat 6 and sets pin 19, connect giving up
Ring 20 of giving up is provided between first 1 and upper slipses seat 6, gives up and peace is fixed by pin 21 of giving up between ring 20 and back-off sub 1
It is fitted together, C-shaped ring 22 is installed with the outer wall of upper slipses seat 6 above ring 20 of giving up, the external diameter of C-shaped ring 22, which is more than, is lost
The internal diameter of bracelet 20, slips connection annular groove, the deblocking core below upper slipses seat 6 are provided with the bottom outer wall of upper slipses seat 6
Packing element assembly is set with axle 4, the top of slips connection annular groove and packing element assembly is fixedly installed togather；
The bottom of packing element assembly is provided with lower slipses installation annular groove, is set on the packing element assembly on the inside of lower slipses installation annular groove
The locking external tooth 23 of crown upward is equipped with, upper inside wall and the lower slipses installation annular groove of lower slipses seat 24 are fixedly installed togather,
There is opening up installation cavity 26 in the top of lower contact 25, the bottom of lower slipses seat 24 and the inwall of installation cavity 26 are fixedly mounted on
Together, there is opening up lower installation axocoel 27 inside of lower slipses seat 24, and the inside of lower installation axocoel 27 has internal diameter to contract successively
Small top bar hole 28 and hole 29 of getting out of a predicament or an embarrassing situation, lower mandrel 30 are located in the bottom in hole 29 of getting out of a predicament or an embarrassing situation, and the external diameter of lower mandrel 30 is with
The internal diameter of stepped hole 29 matches, and the upper inside wall for unsealing the bottom outer wall and lower mandrel 30 of mandrel 4 is fixedly installed togather, under
Deblocking pin 31 is installed between mandrel 30 and lower slipses seat 24, with lower mandrel of the deblocking pin 31 on same RADIAL
Through hole is provided with 30, the bottom outer wall of lower slipses seat 24 is less than the grappling installation annular groove of the top external diameter of lower slipses seat 24 for external diameter
32, it is the outer wall of transition lower slipses seat 24 and anchor that lower slipses seat 24 outer wall of the annular groove 32 to the top of grappling installation annular groove 32 is installed in grappling
Dingan County fills the lower frustum 33 of annular groove 32, and at least three lower protruding block 34 is circumferentially evenly arranged with grappling installation annular groove 32,
Lower slipses stopper slot is formed between two neighboring lower protruding block 34, lower card is provided with by lower slipses ring 10 in lower slipses stopper slot
Watts 35, the lower outer diameter of lower slipses 35 is less than the external diameter of lower slipses 35, and the upper inside walls of lower slipses 35 is matches with lower frustum 33
Inferior pyramidal platform 36 is closed, is distributed with grappling tooth 14 in the external wall of upper portion of lower slipses 35, it is circumferentially equal on the lower end outer wall of lower slipses 35
It is even be provided with least two lower fixture block 37, lower slipses cylinder 38 is sleeved on the lower slipses seat 24 of the top of lower contact 25, lower slipses
The hole of getting out of a predicament or an embarrassing situation that internal diameter matches with the lower outer diameter of lower slipses 35 is arranged at the top of cylinder 38, is set on the lower slipses cylinder 38 in corresponding hole of getting out of a predicament or an embarrassing situation
The under bayonet 39 corresponding with lower fixture block is equipped with, lower fixture block 37 is respectively under bayonet 39；In top bar hole and deblocking mandrel 4
Between be provided with locking pawl 40, locking pawl 40 is cylindrical, and lock is integrally fixed with the lower inner wall of locking pawl 40
Land 41 in fixed, axial lattice are intervally distributed with the lower section of land 41 to the locking pawl 40 on the top of locking pawl 40 in locking
Grid 42, crown locking internal tooth 43 directed downwardly, locking external tooth 23 and locking internal tooth are provided with the upper inside wall of locking pawl 40
43 are engaged.
Packing element assembly can use active force above packing element assembly or/and below packing element assembly in existing known technology
The lower packing element device for being capable of spreading of effect；Upper slipses 12 can edge under the constraint of upper slipses stopper slot and upper slipses ring 11
Upper slipses seat 6 slides axially, and lower slipses 35 can be along lower slipses seat 24 under the constraint of lower slipses stopper slot and lower slipses ring 10
Slide axially；The present invention uses steel wire instrument tripping in, and jarring is set；Salvaged during deblocking with steel wire instrument, whole operation process letter
Singly, conveniently, it is not necessary to special tool(s), equipment；Locking pawl 40 in the present invention, locking shape can be kept after the compression of packing element assembly
State, packing element assembly is in compressive state all the time, ensure sealing；Locking pawl 40 is flexible, when deblocking mandrel 4 above carries, lock
Determining ratchet 40 can open, and make lockout failure；The present invention is after tripping in is set, upward jarring, and shearing is given up after pin 21, is given up
Joint 1 proposes well head with steel wire instrument, and the present invention is stayed in oil pipe except 1 outer remainder of back-off sub, while exposes fishing head
3, unseal salvage beneficial to next time；After the present invention is set in oil pipe, deblocking mandrel 4 is set not by power up or down
Reliably；During deblocking, deblocking mandrel 4 above carries, and through hole exposes, two-way pressure balance, and instrument deblocking is reliable.
The present invention embodiment be：
When setting, blanking plug in the reclaimed oil pipe of the present invention is connected with steel wire tripping in instrument, when the present invention is lowered into
In well during precalculated position, steel wire tripping in instrument is quickly transferred suddenly, is under gravity opened lower slipses 35, is blocked oil pipe
Inwall, then downward jarring back-off sub 1, cutting set pin 19, move down upper slipses cylinder 16 and upper slipses 12, and work as
When connecting pin 18 comes downwards to the bottom of spacing hole 8, upper slipses seat 6 is driven to move down, now, connecting pin 18 is with upper slipses
12nd, upper slipses cylinder 16, upper slipses seat 6 are together descending along long axis hole 5, extrude packing element assembly, while locking pawl 40 is locking
Packing element assembly is locked simultaneously under the cooperation of internal tooth 43 and locking external tooth 23, and it is in compressive state to keep packing element assembly, by repeatedly shake
Hit, the complete compression-expansion of packing element assembly can be made, seal space in oil pipe, now, upper slipses 12 and lower slipses 35 are snapped to
On tube inner wall, reach the purpose of closure oil pipe, after the present invention is set, upward jarring, cut pin 21 of giving up, back-off sub 1
Well head is proposed with steel wire instrument, is left in oil pipe except apparatus of the present invention of back-off sub 1, realizes oil pipe inner blocking.
During deblocking, tripping in steel wire instrument, salvage after arriving fishing head 3, upward jarring, cut deblocking pin 31, unseal mandrel 4
Move up, now, through hole exposes, and communicates fluid and the external fluid of lower slipses seat 24 in deblocking mandrel 4, makes to push on packing element assembly
Dynamic balance, when unsealing mandrel 4 and continuing to move up, lower mandrel 30 is acted in locking in land 41, locking pawl 40 is outwards beaten
Open, lockout failure, the compression elasticity release of packing element assembly, continue above to carry deblocking mandrel 4, deblocking mandrel 4 drives connecting pin 18, even
Pin 18 drives upper slipses cylinder 16 to move up, and unseals upper slipses 12, meanwhile, upper slipses seat 6 moves up, and packing element assembly resets, oil pipe
Inside communicate, continue above to carry deblocking mandrel 4, lower slipses seat 24 moves up, and lower slipses 35 unseal.
Blanking plug in above-mentioned reclaimed oil pipe can be made further optimization and/or improvements according to being actually needed：
As shown in accompanying drawing 1,2, 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 is integrally fixed with connection ring set 45, and the inwall of connection ring set 45 is connected annular groove with slips and is fixedly mounted on one
Rise, connecting cylinder 46 is set with the bottom of packing element mandrel 44, lower slipses mounting ring is provided with the bottom outer wall of connecting cylinder 46
Groove, the upper inside wall of lower slipses installation annular groove and lower slipses seat 24 are fixedly installed togather, the packing element core below connecting cylinder 46
The locking external tooth 23 of crown upward is provided with the outer wall of axle 44；On packing element mandrel 44 between connection ring set 45 and connecting cylinder 46
It is set with least two packing element 47 successively from top to bottom, spacer ring is set with the packing element mandrel 44 between two neighboring packing element 47
48, the lower end outside of connection ring set 45 is provided with conical ring platform 49, and conical ring platform 49, spacer ring 48 are provided with the outside of the upper end of connecting cylinder 46
Upper and lower side on the outside of be respectively arranged with conical ring platform 49, be in the conical surface to match with conical ring platform 49 on the outside of the upper end both ends of packing element 47.Institute
It is hollow rubber cylinder to state packing element 47, is in the conical surface to match with conical ring platform 49 on the outside of both ends, and so, the both ends of packing element 47 can be with connecting
Ring set 45, spacer ring 48 and connecting cylinder 46 is connect after the compression-expansion of packing element 47 preferably to coordinate, ensure packing element 47 expand work can
By property；When setting, upper slipses seat 6 moves down, and extruding packing element mandrel 44 moves down, and packing element 47 is compressed, when packing element mandrel 44
During moving down, locking pawl 40 locks packing element mandrel simultaneously under the cooperation of locking internal tooth 43 and locking external tooth 23
44, it is in compressive state to keep packing element 47；During deblocking, after through hole exposes, fluid and the external fluid of lower slipses seat 24 in mandrel 4 are unsealed
Communicate, make 47 times pressure balances of packing element, when unsealing mandrel 4 and continuing to move up, lower mandrel 30 is acted in locking in land 41, is made
Locking pawl 40 outwardly opens, lockout failure, and the compression elasticity release of packing element 47, packing element 47 resets.
As shown in Figure 1, sealing ring 50 is provided with the inwall of connecting cylinder 46, sealing is provided with lower slipses installation annular groove
Circle 50, sealing ring 50 is respectively arranged with the outer wall of lower mandrel 30 above and below deblocking pin 31.In connecting cylinder 46
Sealing ring 50 is set respectively on wall and lower slipses installation annular groove, connecting cylinder 46 is played slip during moving up and down
The effect of sealing, it is respectively arranged with sealing ring 50 on the outer wall of lower mandrel 30 above and below deblocking pin 31 so that lower core
Axle 30 can preferably seal lower mandrel 30 and lower slipses seat 24 before moving up.
Crown is distributed as shown in accompanying drawing 1,2, on the bottom outer wall of upper slipses 12 towards the grappling tooth 14 of horizontal process；Or/and
Crown is directed downwardly grappling tooth 14 for distribution in the external wall of upper portion of lower slipses 35；Or/and the taper of lower frustum 33 is more than upper frustum
7 taper.The crown of lower slipses 35 is down, instantly fashionable, and blanking plug in the reclaimed oil pipe of the jarring present invention, makes from the top down
Lower slipses 35 are preferably engaged tube inner wall, are set for blanking plug in the reclaimed oil pipe of the present invention and provide bigger support
Power；The crown of upper slipses 12 is level, is advantageous to upper slipses 12 and upper slipses seat 6 moves downward, be easy to packing element 47 to set；Upper frustum
7 and lower frustum 33 taper it is different, the lower taper of frustum 33 is more than the upper taper of frustum 7, under it is fashionable be advantageous to the present invention return
Receipts formula blanking plug in oil pipe is set, and is advantageous to blanking plug deblocking in the reclaimed oil pipe of the present invention when above proposing.
As shown in accompanying drawing 1,2, installed in correspondence and be circumferentially radially distributed with least one in the back-off sub 1 on the top of axocoel 2
Individual balance pipe 51.The setting of balance pipe 51 is to push or above put forward the process of back-off sub 1 in steel wire tripping in instrument for convenience
In, the interior outer fluid of apparatus of the present invention can be made to be connected, avoid apparatus of the present invention built the pressure in implementation process be obstructed influence work
Make process.
As shown in Figure 1, the lower inner wall of fishing head 3 and the external wall of upper portion of deblocking mandrel 4 are threadably secured and are arranged on
Together, the inwall of the bottom of lower slipses seat 24 and installation cavity 26, which is threadably secured, is installed together, outside the bottom for unsealing mandrel 4
The upper inside wall of wall and lower mandrel 30, which is threadably secured, to be installed together, and the inwall of connection ring set 45 is connected annular groove with slips and led to
Cross to be screwed and be installed together, upper inside wall and the lower slipses installation annular groove of lower slipses seat 24 are threadably secured installed in one
Rise.The convenient installation of threaded connection and dismounting.
The present invention use steel wire tripping in instrument, when setting downward jarring back-off sub 1 set, after setting upward jarring give up
Joint 1；Salvaged during deblocking with steel wire tripping in instrument and arrive fishing head 3, directly above propose can deblocking, it is simple to operate；In the present invention
Locking pawl 40, after plugging device is set packing element 47 can be kept to compress, ensure that closure is good, when needing deblocking, locking
Ratchet 40 can unlock, and move packing element mandrel 44, the resilience of packing element 47；The conical surface of upper slipses seat 6 and lower slipses seat 24 is opposite,
That is the conical surface of upper slipses seat 6 is upward, and the conical surface of lower slipses seat 24 is downward, and centre is provided with packing element assembly, when there is pressure differential in oil pipe,
The small side motion of the big directional pressure of pressure, the slip spider conical surface of the small side of pressure just strut slips, there is provided bigger
Snap-in force, the present invention is not moved after blocking, ensure sealing；The present invention can be set optional position in oil pipe, block pressure
Height, meet various working condition requirements.
Above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can basis
The non-essential technical characteristic of increase and decrease is actually needed, to meet the needs of different situations.
Claims (12)
1. blanking plug in a kind of reclaimed oil pipe, it is characterised in that including back-off sub, fishing head, deblocking mandrel, upper slipses
Cylinder, packing element mandrel, lower slipses seat, lower contact, lower mandrel, locking pawl；There is downward opening upper installation the inside of back-off sub
Axocoel, fishing head are sleeved on installation axle intracavitary, and the lower inner wall of fishing head is fixedly mounted on unsealing the external wall of upper portion of mandrel
Together, the top for unsealing mandrel is circumferentially evenly arranged with least two long axis hole, is covered on the deblocking mandrel below fishing head
Equipped with upper slipses seat, the top external diameter of upper slipses seat is less than lower outer diameter, and the middle part outer wall of upper slipses seat is transition upper slipses seat
External wall of upper portion and the upper frustum of bottom outer wall, the top of upper slipses seat is provided with the spacing hole corresponding with long axis hole, spacing hole
Axial length be less than the axial length of long axis hole, be circumferentially uniformly arranged in the upper slipses seat external wall of upper portion below spacing hole
There are at least three upper protruding blocks, form upper slipses stopper slot between two neighboring upper protruding block, pass through upper card in upper slipses stopper slot
Watt ring is provided with upper slipses, and for the lower inner wall of upper slipses to be engaged upper conical with upper frustum, the top external diameter of upper slipses is small
In grappling tooth is distributed with the lower outer diameter of upper slipses, the bottom outer wall of upper slipses, it is provided with the upper end outer wall of upper slipses
Fixture block, on the upper slipses seat below back-off sub, internal diameter and upper slipses top are arranged upper slipses jacket casing at the bottom of upper slipses cylinder
The top bar hole that external diameter matches, correspond to and be provided with the upper latch notch corresponding with upper fixture block, upper card on the upper slipses cylinder in top bar hole
Block in upper latch notch, is installed with connecting pin, connecting pin is located at spacing hole respectively on the upper slipses cylinder above upper latch notch
In the top of long axis hole, it is installed between upper slipses cylinder and upper slipses seat and sets pin, in back-off sub and upper card
Ring of giving up is provided between watt seat, gives up and is fixedly installed togather between ring and back-off sub by pin of giving up, in ring of giving up
It is installed with C-shaped ring on the upper slipses seat outer wall of top, the external diameter of C-shaped ring is more than the internal diameter for ring of giving up, under upper slipses seat
Slips connection annular groove is provided with portion's outer wall, packing element assembly, slips connection are set with the deblocking mandrel below upper slipses seat
The top of annular groove and packing element assembly is fixedly installed togather；The bottom of packing element assembly is provided with lower slipses installation annular groove, in lower card
Watt installation annular groove on the inside of packing element assembly on be provided with the locking external tooth of crown upward, the upper inside wall and lower slipses of lower slipses seat
Installation annular groove is fixedly installed togather, and has opening up installation cavity, the bottom of lower slipses seat and installation in the top of lower contact
The inwall of chamber is fixedly installed togather, and there are opening up lower installation axocoel, the inside of lower installation axocoel in the inside of lower slipses seat
Have the top bar hole and hole of getting out of a predicament or an embarrassing situation that internal diameter reduces successively, lower mandrel is located in the bottom in hole of getting out of a predicament or an embarrassing situation, the external diameter of lower mandrel with
Get out of a predicament or an embarrassing situation hole internal diameter match, the upper inside wall for unsealing the bottom outer wall and lower mandrel of mandrel is fixedly installed togather, in lower core
Deblocking pin is installed between axle and lower slipses seat, is provided with deblocking pin on the lower mandrel on same RADIAL logical
Hole, the bottom outer wall of lower slipses seat are less than the grappling installation annular groove of lower slipses seat top external diameter for external diameter, and grappling installation annular groove is extremely
Lower slipses seat outer wall above grappling installation annular groove installs the lower frustum of annular groove for transition lower slipses seat outer wall and grappling, in grappling
At least three lower protruding blocks are circumferentially evenly arranged with installation annular groove, lower slipses stopper slot is formed between two neighboring lower protruding block,
Lower slipses are provided with by lower slipses ring in lower slipses stopper slot, the lower outer diameter of lower slipses is less than the external diameter of lower slipses, under
The upper inside wall of slips is to be engaged inferior pyramidal platform with lower frustum, and grappling tooth, lower slipses are distributed with the external wall of upper portion of lower slipses
Lower end outer wall on be circumferentially evenly arranged with least two times fixture blocks, lower slipses seat of the lower slipses jacket casing above lower contact
On, the hole of getting out of a predicament or an embarrassing situation that internal diameter matches with lower slipses lower outer diameter, the lower slipses cylinder in corresponding hole of getting out of a predicament or an embarrassing situation are arranged at the top of lower slipses cylinder
On be provided with the under bayonet corresponding with lower fixture block, lower fixture block is respectively under bayonet；Top bar hole with deblocking mandrel it
Between be provided with locking pawl, locking pawl is cylindrical, in the lower inner wall of locking pawl integrally be fixed with locking in land,
Axial grid is intervally distributed with land lower section to the locking pawl on locking pawl top in locking, on the top of locking pawl
Crown locking internal tooth directed downwardly is provided with inwall, locking external tooth and locking internal tooth are engaged.
2. blanking plug in reclaimed oil pipe according to claim 1, it is characterised in that packing element assembly include 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, and the inwall and slips for connecting ring set connect
Connect annular groove to be fixedly installed togather, connecting cylinder is set with the bottom of packing element mandrel, is provided with the bottom outer wall of connecting cylinder
Lower slipses install annular groove, and the upper inside wall of lower slipses installation annular groove and lower slipses seat is fixedly installed togather, below connecting cylinder
Packing element mandrel outer wall on be provided with the locking external tooth of crown upward；On packing element mandrel between connection ring set and connecting cylinder certainly
It is upper and under be set with successively at least two packing element, be set with spacer ring on the packing element mandrel between two neighboring packing element, connection ring
The lower end outside of set is provided with conical ring platform, and conical ring platform is provided with the outside of the upper end of connecting cylinder, is set respectively on the outside of the upper and lower side of spacer ring
Conical ring platform is equipped with, is in the conical surface to match with conical ring platform on the outside of the both ends of packing element.
3. blanking plug in reclaimed oil pipe according to claim 2, it is characterised in that be provided with the inwall of connecting cylinder
Sealing ring, lower slipses are installed and are provided with sealing ring on annular groove, are set respectively on the lower mandrel outer wall above and below deblocking pin
It is equipped with sealing ring.
4. blanking plug in reclaimed oil pipe according to claim 1, it is characterised in that divide on the bottom outer wall of upper slipses
Grappling tooth of the cloth crown towards horizontal process；Or/and crown is directed downwardly grappling tooth for distribution in the external wall of upper portion of lower slipses；Or/
It is more than the taper of upper frustum with the taper of, lower frustum.
5. blanking plug in the reclaimed oil pipe according to Claims 2 or 3, it is characterised in that on the bottom outer wall of upper slipses
Crown is distributed towards the grappling tooth of horizontal process；Or/and crown is directed downwardly grappling tooth for distribution in the external wall of upper portion of lower slipses；
Or/and the taper of lower frustum is more than the taper of upper frustum.
6. blanking plug in reclaimed oil pipe according to claim 1, it is characterised in that axocoel top is installed in correspondence
At least one balance pipe is circumferentially radially distributed with back-off sub.
7. blanking plug in the reclaimed oil pipe according to Claims 2 or 3, it is characterised in that axocoel top is installed in correspondence
Back-off sub on be circumferentially radially distributed with least one balance pipe.
8. blanking plug in reclaimed oil pipe according to claim 5, it is characterised in that axocoel top is installed in correspondence
At least one balance pipe is circumferentially radially distributed with back-off sub.
9. blanking plug in the reclaimed oil pipe according to Claims 2 or 3, it is characterised in that the lower inner wall of fishing head with
The external wall of upper portion of deblocking mandrel, which is threadably secured, to be installed together, and the bottom of lower slipses seat and the inwall of installation cavity pass through screw thread
It is fixedly installed togather, the upper inside wall of the bottom outer wall and lower mandrel that unseal mandrel, which is threadably secured, to be installed together, even
Connect the inwall of ring set and slips is connected annular groove and is threadably secured and is installed together, upper inside wall and the lower slipses of lower slipses seat are pacified
Dress annular groove, which is threadably secured, to be installed together.
10. blanking plug in reclaimed oil pipe according to claim 5, it is characterised in that the lower inner wall and solution of fishing head
The external wall of upper portion of envelope mandrel, which is threadably secured, to be installed together, and the bottom of lower slipses seat and the inwall of installation cavity are consolidated by screw thread
Dingan County is fitted together, and the upper inside wall of the bottom outer wall and lower mandrel that unseal mandrel, which is threadably secured, to be installed together, connection
The inwall of ring set, which with slips is connected annular groove and is threadably secured, to be installed together, and upper inside wall and the lower slipses of lower slipses seat are installed
Annular groove, which is threadably secured, to be installed together.
11. blanking plug in reclaimed oil pipe according to claim 7, it is characterised in that the lower inner wall and solution of fishing head
The external wall of upper portion of envelope mandrel, which is threadably secured, to be installed together, and the bottom of lower slipses seat and the inwall of installation cavity are consolidated by screw thread
Dingan County is fitted together, and the upper inside wall of the bottom outer wall and lower mandrel that unseal mandrel, which is threadably secured, to be installed together, connection
The inwall of ring set, which with slips is connected annular groove and is threadably secured, to be installed together, and upper inside wall and the lower slipses of lower slipses seat are installed
Annular groove, which is threadably secured, to be installed together.
12. blanking plug in reclaimed oil pipe according to claim 8, it is characterised in that the lower inner wall and solution of fishing head
The external wall of upper portion of envelope mandrel, which is threadably secured, to be installed together, and the bottom of lower slipses seat and the inwall of installation cavity are consolidated by screw thread
Dingan County is fitted together, and the upper inside wall of the bottom outer wall and lower mandrel that unseal mandrel, which is threadably secured, to be installed together, connection
The inwall of ring set, which with slips is connected annular groove and is threadably secured, to be installed together, and upper inside wall and the lower slipses of lower slipses seat are installed
Annular groove, which is threadably secured, to be installed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050924.1A CN105484696B (en) | 2016-01-26 | 2016-01-26 | Blanking plug in reclaimed oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050924.1A CN105484696B (en) | 2016-01-26 | 2016-01-26 | Blanking plug in reclaimed oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105484696A CN105484696A (en) | 2016-04-13 |
| CN105484696B true CN105484696B (en) | 2018-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050924.1A Active CN105484696B (en) | 2016-01-26 | 2016-01-26 | Blanking plug in reclaimed oil pipe |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593343B (en) * | 2016-12-15 | 2023-02-24 | 中国石油天然气股份有限公司 | Preset soluble sleeve blanking plug and using method thereof |
| CN106522869B (en) * | 2016-12-30 | 2019-06-07 | 新疆能新科油气技术有限公司 | Pit shaft throws stifled device and its installation method |
| CN108487877B (en) * | 2018-04-18 | 2024-08-02 | 盐城庆隆机械有限公司 | Automatic plugging tool for oil pipe |
| CN110617025B (en) * | 2019-09-25 | 2024-06-25 | 中国石油天然气股份有限公司 | Pumping type casing blocking tool for oil pipe without pressing down and using method thereof |
| CN113944443B (en) * | 2020-07-16 | 2023-12-22 | 中国石油天然气股份有限公司 | Plug device |
| 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 |
| CN115126454B (en) * | 2021-03-24 | 2024-05-28 | 中国石油天然气股份有限公司 | Oil pipe blanking plug |
| CN114941516B (en) * | 2022-06-02 | 2024-01-12 | 新疆能源(集团)华油技术服务有限公司 | Quick rotary extraction well completion tool and quick rotary extraction well completion method |
| CN115749671B (en) * | 2023-01-06 | 2023-05-09 | 中石化西南石油工程有限公司 | Drilling constant-pressure trap plugging tool and plugging method |
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| CN201539229U (en) * | 2009-11-04 | 2010-08-04 | 中国石油天然气股份有限公司 | Preset oil pipe blanking plug for operation under pressure |
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| CN202467753U (en) * | 2011-12-14 | 2012-10-03 | 中国石油天然气股份有限公司 | Oil-water well tail pipe blanking plug |
| CN205577937U (en) * | 2016-01-26 | 2016-09-14 | 新疆华油油气工程有限公司 | But blanking plug in recovery type oil pipe |
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| US3460616A (en) * | 1967-07-26 | 1969-08-12 | Dresser Ind | Retrievable packer |
| CN201539229U (en) * | 2009-11-04 | 2010-08-04 | 中国石油天然气股份有限公司 | Preset oil pipe blanking plug for operation under pressure |
| CN202300306U (en) * | 2011-08-29 | 2012-07-04 | 中国石油化工股份有限公司 | Oil pipe detecting and blanking plug |
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| CN205577937U (en) * | 2016-01-26 | 2016-09-14 | 新疆华油油气工程有限公司 | But blanking plug in recovery type oil pipe |
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|---|---|
| CN105484696A (en) | 2016-04-13 |
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