CN107816333A - Underground releaser - Google Patents
Underground releaser Download PDFInfo
- Publication number
- CN107816333A CN107816333A CN201711166433.4A CN201711166433A CN107816333A CN 107816333 A CN107816333 A CN 107816333A CN 201711166433 A CN201711166433 A CN 201711166433A CN 107816333 A CN107816333 A CN 107816333A
- Authority
- CN
- China
- Prior art keywords
- hole section
- plug
- pressing cap
- glue wing
- sliding sleeve
- 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.)
- Granted
Links
- 239000003292 glue Substances 0.000 claims abstract description 108
- 238000003825 pressing Methods 0.000 claims abstract description 80
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 239000004568 cement Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005086 pumping 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
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)
- Earth Drilling (AREA)
Abstract
The present invention relates to downhole tool technical field, it is a kind of underground releaser, it includes short circuit head, locating detent set, inner sliding sleeve, plug mandrel, glue wing plug and self-locking split ring, circumferentially there is at least one shear pin in short circuit head lower outside, short circuit head lower inside is fixedly installed togather with glue wing upper pressing cap upper outside by shear pin, glue wing upper pressing cap lower inside is provided with plug mandrel, plug mandrel lower inside is provided with mandrel land, the locating detent set that bottom is located on the inside of glue wing upper pressing cap is installed by fixing device in short circuit head lower inside.Reasonable and compact in structure of the present invention, it is easy to use, by the way that short circuit head is fixedly mounted on glue wing upper pressing cap top, when extension hanger can be avoided to enter connect before well, glue wing plug friction internal surface of sleeve pipe damage glue wing plug, the design covered by inner sliding sleeve and locating detent, can make drilling rod plug and glue wing plug it is normal it is compound avoid leaving cement plug in well, there is the characteristics of safe and stable.
Description
Technical field
The present invention relates to downhole tool technical field, is a kind of underground releaser.
Background technology
Size plug in drilling liner cementing construction, i.e. glue wing plug and drilling rod plug, glue wing plug are compound with drilling rod plug
Pressure is to judge that drilling rod plug realizes locking and the normal descending significant data of glue wing plug, composite pressure and glue with glue wing plug
The structure design of wing plug is closely related, and rational design structure can ensure that plug is normally compound not to the utmost, while can also keep away
Exempt from abrasion of the glue wing plug during assembling and entering well.The glue wing plug that in the market uses at present is connected to abut with hanger and cut
Cut pin to fix, in size plug compound tense, two plugs may be caused also to be not implemented completely compound will make to cut this structure
Cut pin to be cut, drilling rod plug is disengaged during descending with glue wing plug, cause to leave " ash plug " i.e. cement plug in well,
And slurry and can not bruising situations such as, drilling liner cementing quality will be had a strong impact on.
The content of the invention
The invention provides a kind of underground releaser, overcomes the deficiency of above-mentioned prior art, it can effectively solve existing
When having drilling liner cementing operation, glue wing plug can not be completely compound with drilling rod plug, causes to leave cement plug in well, influences tail pipe and consolidates
Well quality problems.
The technical scheme is that realized by following measures：A kind of underground releaser, including it is short circuit head, fixed
Position pawl set, inner sliding sleeve, plug mandrel, glue wing plug and self-locking split ring, circumferentially have at least in short circuit head lower outside
One shear pin, short circuit head lower inside are fixedly installed togather with glue wing upper pressing cap upper outside by shear pin, glue
Wing upper pressing cap lower inside is provided with plug mandrel, and plug mandrel lower inside is provided with mandrel land, in short circuit head lower inside
The locating detent set that bottom is located on the inside of glue wing upper pressing cap is provided with by fixing device, plug mandrel inner sleeve is located at equipped with top
The inner sliding sleeve of locating detent set inner side, the inner side of inner sliding sleeve are provided with the endoporus to match with drilling rod plug, along circle in the middle part of plug mandrel
The fixation shear pin of at least one inside and outside insertion is distributed with week, inner sliding sleeve is installed together by fixed shear pin with plug mandrel；It is fixed
The lower circumference of position pawl set side wall is distributed with open slot no less than two, the bottom of locating detent set by open slot be separated into
Open slot quantity identical positions calvus, and each lower outside for positioning calvus is fixed with boss locating piece, corresponding boss positioning
Locating slot is provided with the inside of the glue wing upper pressing cap of block position, the boss locating piece of inner side is located at locating slot by the extruding of inner sliding sleeve
It is interior；Plug mandrel lower end outside is installed with glue wing lower pressing cap, and glue wing lower pressing cap lower end is installed with lock ring pressure cap, is located at
Pressure cap annular groove is provided with the outside of the glue wing lower pressing cap of lock ring pressure cap top position, self-locking split ring is installed in pressure cap annular groove；It is located at
Along being evenly equipped with least two glue wing plugs, adjacent glue vertically on the outside of plug mandrel between glue wing upper pressing cap and glue wing lower pressing cap
Glue wing baffle ring is mounted between wing plug.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
Above-mentioned fixing device can be jump ring, and short circuit head lower inside is provided with joint land, locating detent set upper outside be provided with seat in
The pawl set land of joint land upper end, the upper end of pawl set land are installed with the jump ring positioned at short circuit head inside middle portion.
The short circuit head inside middle portion of above-mentioned corresponding jump ring top position can be provided with least one O-ring seals, corresponding card
At least one O-ring seals are installed between short circuit head and pawl the set land of spring lower position.
Above-mentioned corresponding boss locating piece can be provided with upper pressing cap by the glue wing upper pressing cap inside middle portion of position between plug mandrel
Boss, inner sliding sleeve upper outside are provided with sliding sleeve outer groove, and the inner of upper pressing cap boss is located in sliding sleeve outer groove.
Lower pressing cap land can be provided with the outside of glue wing lower pressing cap above above-mentioned self-locking split ring, is installed on the outside of lower pressing cap land
There are at least one O-ring seals.
The inner sliding sleeve lower outside of above-mentioned corresponding fixed shear pin top position can be provided with least vertically to be distributed together
Pin locating slot, the anti-rotation being equipped with the middle part of the plug mandrel of corresponding each pin positioning groove location above fixed shear pin
Pin, anti-rotation pin are inner in pin locating slot.
The first straight hole section that the endoporus of above-mentioned inner sliding sleeve may include from top to bottom to be connected in turn, the first taper hole section,
Second straight hole section, the second taper hole section, the 3rd straight hole section, the 4th straight hole section, the 3rd taper hole section and the 5th straight hole section, the first taper hole
Section, the second taper hole section and the 3rd taper hole section are cone machine hole wide at the top and narrow at the bottom, the first straight hole section, the second straight hole section and the 3rd straight hole
The internal diameter of section is sequentially reduced, and the 4th straight hole section internal diameter is more than the 3rd straight hole section, and the internal diameter of the 5th straight hole section is less than the 4th straight hole section.
It can be provided with least between glue wing upper pressing cap outside on the inside of the short circuit head of above-mentioned corresponding shear pin top position
One O-ring seals, at least one O-ring seals, corresponding pin locating slot are installed between glue wing upper pressing cap and plug mandrel
At least one O-ring seals are installed between the plug mandrel and inner sliding sleeve of top position, corresponding fixed shear pin lower position
At least one O-ring seals, glue wing lower pressing cap inner side and plug mandrel lower outside are installed between plug mandrel and inner sliding sleeve
Between at least one O-ring seals are installed.
Above-mentioned glue wing upper pressing cap can be connected through a screw thread with plug mandrel to be fixedly installed togather, under plug mandrel and the glue wing
Pressure cap, which is connected through a screw thread, to be fixedly installed togather, and glue wing lower pressing cap is connected through a screw thread with lock ring pressure cap and is fixedly mounted on one
Rise.
Above-mentioned plug mandrel, glue wing lower pressing cap and the minimum diameter of lock ring pressure cap three can be consistent, in the minimum of inner sliding sleeve
Footpath is less than the minimum diameter of plug mandrel.
Reasonable and compact in structure of the present invention, it is easy to use, can be with by the way that short circuit head is fixedly mounted on glue wing upper pressing cap top
When avoiding extension hanger from entering connecting before well, glue wing plug friction internal surface of sleeve pipe damage glue wing plug, pass through inner sliding sleeve and positioning
The design of pawl set, can make drilling rod plug and glue wing plug it is normal it is compound avoid leaving cement plug in well, there is safe and stable spy
Point.
Brief description of the drawings
Accompanying drawing 1 is the main view half section schematic of preferred embodiment.
Accompanying drawing 2 is the main view half section schematic under inner sliding sleeve downstream state after Fig. 1 builds the pressure.
Accompanying drawing 3 is that the main view half section structure that inner sliding sleeve is come downwards under mandrel land state after Fig. 1 fixation shear pins are cut is shown
It is intended to.
Accompanying drawing 4 is the main view half section schematic that locating detent covers under contraction state after Fig. 1 shear pins are cut.
Accompanying drawing 5 is Fig. 1 partial enlargement structural representations at A.
Accompanying drawing 6 is locating detent nested structure schematic diagram.
Coding in accompanying drawing is respectively：1 is short circuit head, and 2 be locating detent set, and 3 be inner sliding sleeve, and 4 be plug mandrel, and 5 be glue
Wing plug, 6 be self-locking split ring, and 7 be shear pin, and 8 be glue wing upper pressing cap, and 9 be mandrel land, and 10 be fixed shear pin, and 11 are
Open slot, 12 be positioning calvus, and 13 be boss locating piece, and 14 be glue wing lower pressing cap, and 15 be lock ring pressure cap, and 16 be glue wing baffle ring,
17 be jump ring, and 18 be joint land, and 19 be that pawl covers land, and 20 be O-ring seals, and 21 be upper pressing cap boss, and 22 be sliding sleeve outer shroud
Groove, 23 be lower pressing cap land, and 24 be pin locating slot, and 25 be anti-rotation pin, and 26 be the first straight hole section, and 27 be the first taper hole section,
28 be the second straight hole section, and 29 be the second taper hole section, and 30 be the 3rd straight hole section, and 31 be the 4th straight hole section, and 32 be the 3rd taper hole section, 33
It is drilling rod plug for the 5th straight hole section, 34.
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 forward and backward, upper and lower, left and right etc. is the Butut according to Figure of description
Direction determines.
With reference to embodiment and accompanying drawing, the invention will be further described：
As shown in accompanying drawing 1,2,3,4,5,6, the underground releaser includes short circuit head 1, locating detent set 2, inner sliding sleeve 3, plug core
Axle 4, glue wing plug 5 and self-locking split ring 6, circumferentially there is at least one shear pin 7 in the lower outside of short circuit head 1, it is short
The lower inside of joint 1 is fixedly installed togather with the upper outside of glue wing upper pressing cap 8 by shear pin 7, the bottom of glue wing upper pressing cap 8
Inner side is provided with plug mandrel 4, and the lower inside of plug mandrel 4 is provided with mandrel land 9, passes through fixation in the lower inside of short circuit head 1
Device is provided with the locating detent set 2 that bottom is located at the inner side of glue wing upper pressing cap 8, and the inner sleeve of plug mandrel 4 is equipped with top positioned at positioning
The inner sliding sleeve 3 of the inner side of pawl set 2, the inner side of inner sliding sleeve 3 are provided with the endoporus to match with drilling rod plug 34, the middle part edge of plug mandrel 4
Circle distribution has the fixation shear pin 10 of at least one inside and outside insertion, and inner sliding sleeve 3 is arranged on by fixed shear pin 10 with plug mandrel 4
Together；The open slot 11 no less than two is distributed with the lower circumference of locating detent 2 side walls of set, and the bottom of locating detent set 2 is by opening
Mouth groove 11 is separated into positions calvus 12 with the quantity identical of open slot 11, and each lower outside for positioning calvus 12 is fixed with boss
Locating piece 13, the inner side of glue wing upper pressing cap 8 of the corresponding position of boss locating piece 13 are provided with locating slot, and the boss locating piece 13 of inner side is logical
The extruding for crossing inner sliding sleeve 3 is located in locating slot；The lower end outside of plug mandrel 4 is installed with glue wing lower pressing cap 14, and the glue wing pushes
The lower end of cap 14 is installed with lock ring pressure cap 15, and pressure cap is provided with positioned at the outside of glue wing lower pressing cap 14 of the top position of lock ring pressure cap 15
Annular groove, self-locking split ring 6 is installed in pressure cap annular groove；Plug mandrel 4 between glue wing upper pressing cap 8 and glue wing lower pressing cap 14
Outside is mounted on glue wing baffle ring 16 along at least two glue wing plugs 5 are evenly equipped with vertically between adjacent glue wing plug 5.Using
During, when carrying out for slurry operation, into tail pipe, input drilling rod plug 34 is built the pressure, and drilling rod plug 34 is made in the impact of liquid
It is descending under, when drilling rod plug 34 has just enter into inner sliding sleeve 3, due to there is no boss locating piece 13 between inner sliding sleeve 3 and locating detent set 2
The space of contraction, the descending thrust of drilling rod plug 34 are not acted on glue wing upper pressing cap 8, and now shear pin 7 will not be cut
It is disconnected（As shown in Figure 2）, when drilling rod plug 34 continues traveling downwardly, drilling rod plug 34 promotes inner sliding sleeve 3 to cut fixed shear pin 10, ground face-pumping
Pressure rises to 1-2MPa, and pressure change now can be as drilling rod plug 34 and the compound reference pressure of glue wing plug 5, when interior
When sliding sleeve 3 comes downwards to mandrel land 9（As shown in Figure 3）, the upper surface of inner sliding sleeve 3 just disengages with boss locating piece 13, now cut
Cut pin 7 and start stress, after increase pump pressure is continued on ground, shear pin 7 is cut, and boss locating piece 13 receives presses on the glue wing
After shrinking locating detent set 2 after the thrust of cap 8, the top of the present invention is set to be separated with bottom（As shown in Figure 4）, bottom of the present invention after
Continuous normal descending completion is for slurry operation.According to demand, the distance between the upper end of inner sliding sleeve 3 and boss locating piece 13 be first away from
From the distance between the lower end of inner sliding sleeve 3 and mandrel land 9 are second distance, and second distance is not less than the first distance；Fixed shear pin
10 shear force is 1-2MPa.Reasonable and compact in structure of the present invention, it is easy to use, pacified by being fixed on the top of glue wing upper pressing cap 8
Short circuit head 1 is filled, when extension hanger can be avoided to enter connect before well, glue wing plug 5 rubs internal surface of sleeve pipe damage glue wing plug 5,
By the design of inner sliding sleeve 3 and locating detent set 2, it can make drilling rod plug 34 and glue wing plug 5 are normal compound to avoid leaving water in well
The bod, there is the characteristics of safe and stable.
A kind of above-mentioned underground releaser can be made further optimization and/or improvements according to being actually needed：
As shown in accompanying drawing 1,2,3,4,5,6, fixing device is jump ring 17, and the lower inside of short circuit head 1 is provided with joint land 18, positioning
Pawl covers 2 upper outsides and is provided with seat in the pawl set land 19 of the upper end of joint land 18, and the upper end that pawl covers land 19 is installed with position
In the jump ring 17 of the inside middle portion of short circuit head 1.In use, by jump ring 17 and joint land 18, ensure locating detent set 2 with
Being fixedly connected for short circuit head 1 is more stable, avoids pawl set land 19 from being slipped with joint land 18.
As shown in accompanying drawing 1,2,3,4,5,6, the inside middle portion of short circuit head 1 of the corresponding top position of jump ring 17 is provided with least one
Individual O-ring seals 20, it is close that at least one O shapes are installed between the short circuit head 1 and pawl set land 19 of the corresponding lower position of jump ring 17
Seal 20.In use, the sealing between short circuit head 1 and inner sliding sleeve 3 is ensured.
As shown in accompanying drawing 1,2,3,4,5,6, the glue wing upper pressing cap of position between corresponding boss locating piece 13 and plug mandrel 4
8 inside middle portions are provided with upper pressing cap boss 21, and the upper outside of inner sliding sleeve 3 is provided with sliding sleeve outer groove 22, the inner of upper pressing cap boss 21
In sliding sleeve outer groove 22.In use, ensure that inner sliding sleeve 3 can determine more stable being squeezed in of boss locating piece 13
In the groove of position.
As shown in accompanying drawing 1,2,3,4,5,6, the outside of glue wing lower pressing cap 14 of the top of self-locking split ring 6 is provided with lower pressing cap land
23, the outside of lower pressing cap land 23 is provided with least one O-ring seals 20.Ensure close between the present invention and its underpart connecting tube string
Feng Xing.
As shown in accompanying drawing 1,2,3,4,5,6, the lower outside of inner sliding sleeve 3 of the corresponding fixed top position of shear pin 10 is provided with least
The pin locating slot 24 being vertically distributed together, the middle part of plug mandrel 4 of corresponding each position of pin locating slot 24 are all provided with
There is the anti-rotation pin 25 positioned at the fixed top of shear pin 10, anti-rotation pin 25 is inner to be located in pin locating slot 24.Using process
In, it can prevent inner sliding sleeve 3 from being rotated when for slurry operation by anti-rotation pin 25.
As shown in accompanying drawing 1,2,3,4,5,6, the endoporus of inner sliding sleeve 3 includes from top to bottom being connected in turn first straight
Hole section 26, the first taper hole section 27, the second straight hole section 28, the second taper hole section 29, the 3rd straight hole section 30, the 4th straight hole section the 31, the 3rd
The straight hole section 33 of taper hole section 32 and the 5th, the first taper hole section 27, the second taper hole section 29 and the 3rd taper hole section 32 are wide at the top and narrow at the bottom
Cone machine hole, the internal diameter of the first straight hole section 26, the second straight hole section 28 and the 3rd straight hole section 30 are sequentially reduced, the internal diameter of the 4th straight hole section 31
More than the 3rd straight hole section 30, the internal diameter of the 5th straight hole section 33 is less than the 4th straight hole section 31.In use, inner sliding sleeve 3 is interior
Chamber uses such design, can make drilling rod plug 34 after the inner chamber of inner sliding sleeve 3 is entered, under can guarantee that drilling rod plug 34 smoothly
OK, avoiding drilling rod plug 34 from not building the pressure prevents for slurry operation from being smoothed out.
As shown in accompanying drawing 1,2,3,4,5,6, the inner side of short circuit head 1 and the glue wing upper pressing cap 8 of the corresponding top position of shear pin 7
At least one O-ring seals 20 are installed between outside, at least one O shapes are installed between glue wing upper pressing cap 8 and plug mandrel 4
Sealing ring 20, it is close that at least one O shapes are installed between the plug mandrel 4 and inner sliding sleeve 3 of the corresponding top position of pin locating slot 24
Seal 20, at least one O-ring seals are installed between the plug mandrel 4 and inner sliding sleeve 3 of the corresponding fixed lower position of shear pin 10
20, at least one O-ring seals 20 are installed between the inner side of glue wing lower pressing cap 14 and the lower outside of plug mandrel 4.Using
Cheng Zhong, by the diverse location installation O-ring seals 20 inside the present invention, ensure sealing, make to be smoothed out for slurry operation.
As shown in accompanying drawing 1,2,3,4,5,6, glue wing upper pressing cap 8 is connected through a screw thread with plug mandrel 4 and is fixedly mounted on one
Rise, plug mandrel 4 is connected through a screw thread with glue wing lower pressing cap 14 and is fixedly installed togather, glue wing lower pressing cap 14 and lock ring pressure cap 15
It is connected through a screw thread and is fixedly installed togather.In use, it is connected through a screw thread easy for removal and installation.
As shown in accompanying drawing 1,2,3,4,5,6, in the minimum of plug mandrel 4, glue wing lower pressing cap 14 and the three of lock ring pressure cap 15
Footpath is consistent, and the minimum diameter of inner sliding sleeve 3 is less than the minimum diameter of plug mandrel 4.In use, the internal diameter of inner sliding sleeve 3 is most
It is small to ensure drilling rod plug 34 during descending, it will not be slipped because of the thrust of liquid from inner sliding sleeve 3, cause nothing
Method builds the pressure influence drilling rod plug 34, and plug mandrel 4, glue wing lower pressing cap 14 and lock ring pressure cap 15 three compound with glue wing plug 5
Minimum diameter be unanimously for the ease of input drilling rod plug 34 before liquid circulated in pipe.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and there is stronger adaptability and optimal implementation to imitate for it
Fruit, can be according to the non-essential technical characteristic of increase and decrease be actually needed, to meet the needs of different situations.
Claims (10)
1. a kind of underground releaser, it is characterised in that including short circuit head, locating detent set, inner sliding sleeve, plug mandrel, glue wing plug
With self-locking split ring, circumferentially there are at least one shear pin, short circuit head lower inside and glue in short circuit head lower outside
Wing upper pressing cap upper outside is fixedly installed togather by shear pin, and glue wing upper pressing cap lower inside is provided with plug mandrel,
Plug mandrel lower inside is provided with mandrel land, and being provided with bottom by fixing device in short circuit head lower inside is located on the glue wing
Locating detent set on the inside of pressure cap, plug mandrel inner sleeve equipped with top be located at locating detent set on the inside of inner sliding sleeve, inner sliding sleeve it is interior
Side is provided with the endoporus to match with drilling rod plug, and the fixation for circumferentially having at least one inside and outside insertion in the middle part of plug mandrel is cut
Nail, inner sliding sleeve are installed together by fixed shear pin with plug mandrel；The lower circumference of locating detent set side wall, which is distributed with, to be no less than
The open slot of two, the bottom of locating detent set is separated into by open slot positions calvus, Mei Geding with open slot quantity identical
The lower outside of position calvus is fixed with boss locating piece, and positioning is provided with the inside of the glue wing upper pressing cap of corresponding boss locating piece position
Groove, the boss locating piece of inner side are located in locating slot by the extruding of inner sliding sleeve；Plug mandrel lower end outside is installed with glue
Wing lower pressing cap, glue wing lower pressing cap lower end are installed with lock ring pressure cap, outside the glue wing lower pressing cap of lock ring pressure cap top position
Side is provided with pressure cap annular groove, and self-locking split ring is provided with pressure cap annular groove；Glue between glue wing upper pressing cap and glue wing lower pressing cap
Fill on the outside of mandrel along at least two glue wing plugs are evenly equipped with vertically, glue wing baffle ring is mounted between adjacent glue wing plug.
2. underground releaser according to claim 1, it is characterised in that：Fixing device is jump ring, in short circuit head bottom
Side is provided with joint land, and locating detent set upper outside is provided with pawl of the seat in joint land upper end and covers land, and pawl covers the upper end of land
It is installed with the jump ring positioned at short circuit head inside middle portion.
3. underground releaser according to claim 2, it is characterised in that：In the middle part of the short circuit head of corresponding jump ring top position
Inner side is provided with least one O-ring seals, is provided with least between the short circuit head and pawl set land of corresponding jump ring lower position
One O-ring seals.
4. according to the underground releaser described in claim 1 or 2 or 3, it is characterised in that：Corresponding boss locating piece and plug core
The glue wing upper pressing cap inside middle portion of position is provided with upper pressing cap boss between axle, and inner sliding sleeve upper outside is provided with sliding sleeve outer groove, on
The inner of pressure cap boss is located in sliding sleeve outer groove；Or/and it is provided with lower pressing cap on the outside of the glue wing lower pressing cap above self-locking split ring
Land, lower pressing cap land outside are provided with least one O-ring seals.
5. according to the underground releaser described in claim 1 or 2 or 3, it is characterised in that：Corresponding fixed shear pin top position
Inner sliding sleeve lower outside is provided with the pin locating slot being at least vertically distributed together, corresponding to fix the interior of shear pin top position
Sliding sleeve lower outside is provided with the pin locating slot being at least vertically distributed together, and anti-rotation pin the inner is located at pin locating slot
It is interior；Or/and the first straight hole section, the first taper hole section, second straight that the endoporus of inner sliding sleeve includes from top to bottom being connected in turn
Hole section, the second taper hole section, the 3rd straight hole section, the 4th straight hole section, the 3rd taper hole section and the 5th straight hole section, the first taper hole section, second
Taper hole section and the 3rd taper hole section are cone machine hole wide at the top and narrow at the bottom, the first straight hole section, the second straight hole section and the 3rd straight hole section it is interior
Footpath is sequentially reduced, and the 4th straight hole section internal diameter is more than the 3rd straight hole section, and the internal diameter of the 5th straight hole section is less than the 4th straight hole section.
6. underground releaser according to claim 4, it is characterised in that：The inner sliding sleeve of corresponding fixed shear pin top position
Lower outside is provided with the pin locating slot being at least vertically distributed together, the plug core of corresponding each pin positioning groove location
The anti-rotation pin being equipped with the middle part of axle above fixed shear pin, anti-rotation pin are inner in pin locating slot；It is or/and interior
The endoporus of sliding sleeve include from top to bottom be connected in turn the first straight hole section, the first taper hole section, the second straight hole section, second cone
Hole section, the 3rd straight hole section, the 4th straight hole section, the 3rd taper hole section and the 5th straight hole section, the first taper hole section, the second taper hole section and the 3rd
Taper hole section is cone machine hole wide at the top and narrow at the bottom, and the internal diameter of the first straight hole section, the second straight hole section and the 3rd straight hole section is sequentially reduced, the
Four straight hole section internal diameters are more than the 3rd straight hole section, and the internal diameter of the 5th straight hole section is less than the 4th straight hole section.
7. according to the underground releaser described in claim 1 or 2 or 3 or 6, it is characterised in that：Corresponding shear pin upper position
At least one O-ring seals, glue wing upper pressing cap and plug core are installed between on the inside of the short circuit head put and on the outside of glue wing upper pressing cap
At least one O-ring seals are installed between axle, pacified between the plug mandrel and inner sliding sleeve of corresponding pin locating slot top position
Equipped with least one O-ring seals, at least one is provided between the plug mandrel and inner sliding sleeve of corresponding fixed shear pin lower position
Individual O-ring seals, at least one O-ring seals are installed between glue wing lower pressing cap inner side and plug mandrel lower outside.
8. underground releaser according to claim 5, it is characterised in that：The short circuit head of corresponding shear pin top position
At least one O-ring seals are installed between on the outside of inner side and glue wing upper pressing cap, installed between glue wing upper pressing cap and plug mandrel
There are at least one O-ring seals, at least one is provided between the plug mandrel and inner sliding sleeve of corresponding pin locating slot top position
Individual O-ring seals, at least one O shapes sealing is installed between the plug mandrel and inner sliding sleeve of corresponding fixed shear pin lower position
Circle, at least one O-ring seals are installed between glue wing lower pressing cap inner side and plug mandrel lower outside.
9. according to the underground releaser described in claim 1 or 2 or 3 or 6 or 8, it is characterised in that：Glue wing upper pressing cap and plug
Mandrel, which is connected through a screw thread, to be fixedly installed togather, and plug mandrel is connected through a screw thread with glue wing lower pressing cap and is fixedly mounted on one
Rise, glue wing lower pressing cap is connected through a screw thread with lock ring pressure cap and is fixedly installed togather；Or/and plug mandrel, glue wing lower pressing cap and
The minimum diameter of lock ring pressure cap three is consistent, and the minimum diameter of inner sliding sleeve is less than the minimum diameter of plug mandrel.
10. underground releaser according to claim 7, it is characterised in that：Glue wing upper pressing cap passes through spiral shell with plug mandrel
Line, which is connected, to be installed together, and plug mandrel is connected through a screw thread with glue wing lower pressing cap and is fixedly installed togather, and the glue wing pushes
Cap is connected through a screw thread with lock ring pressure cap and is fixedly installed togather；Or/and plug mandrel, glue wing lower pressing cap and lock ring pressure cap three
The minimum diameter of person is consistent, and the minimum diameter of inner sliding sleeve is less than the minimum diameter of plug mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711166433.4A CN107816333B (en) | 2017-11-21 | 2017-11-21 | Underwater releasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108868689A (en) * | 2018-09-18 | 2018-11-23 | 中国石油集团西部钻探工程有限公司 | Remove the tail pipe rubber plug device of cement slurry in parts casing pipe under drilling liner cementing block ring |
| CN110541673A (en) * | 2019-09-24 | 2019-12-06 | 重庆科技学院 | Releasable multi-branch fishbone drilling connecting tool |
| CN110578480A (en) * | 2019-09-24 | 2019-12-17 | 中国石油集团西部钻探工程有限公司 | Reliable hydraulic centralizer |
| CN111980624A (en) * | 2020-09-08 | 2020-11-24 | 中国石油天然气集团有限公司 | Ball seat and rubber plug integrated assembly and using method thereof |
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| CN107816333B (en) | 2023-10-27 |
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