CN208777923U - Diameter-changing centering guide - Google Patents
Diameter-changing centering guide Download PDFInfo
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- CN208777923U CN208777923U CN201821525771.2U CN201821525771U CN208777923U CN 208777923 U CN208777923 U CN 208777923U CN 201821525771 U CN201821525771 U CN 201821525771U CN 208777923 U CN208777923 U CN 208777923U
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- righting
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- righting board
- nib
- radial hole
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Abstract
The utility model relates to centralizer technical fields, are a kind of diameter-changing centering guides；It includes central tube, flexible righting mechanism, plunger, filler and solvable packing；There are at least three vertical flexible righting mechanisms in the outer end circle distribution of central tube；Flexible righting mechanism includes at least one set of upper righting board and lower righting board mutually covered and can extend limit；The utility model reasonable and compact in structure, it is easy to use；Packing can be dissolved to and be made by injecting into well the liquid of filler extruding, liquid occurs extruding with filler after dissolving packing and reacts, plunger is pushed to jack up upper righting board and lower righting board outward, make righting board and lower righting board that the state arched be presented and act on the inside of the borehole wall, realizes the righting of bunch tube；Wherein, with the driving of filler extruding, the outer diameter that arches of upper righting board and lower righting board is being gradually increased, and until that can act on the inside of the borehole wall, can be suitable for that hole diameter is excessive and can not use at the well section of righting, and applicable range is wider.
Description
Technical field
The utility model relates to centralizer technical fields, are a kind of diameter-changing centering guides.
Background technique
Currently, in solid, completion practice, for the centralizer for guaranteeing cement sealing quality, ensuring casing, in casing tripping in
Cheng Zhong adds a certain number of casing stabbing boards in its pipe string；And there are mainly two types of common centralizers, i.e., rigid righting
Device and elastic centralizer, but casing centralization is not able to satisfy since its maximum outside diameter is fixed in the biggish well section of some wellbores
Requirement.
Summary of the invention
The utility model provides a kind of diameter-changing centering guide, overcomes the defects of the prior art, and can effectively solve
Rigid centralizer and elastic centralizer can not be asked casing centering is placed in the middle since maximum outside diameter is fixed in the excessive well section of hole diameter
Topic.
The technical solution of the utility model is realized by following measures: a kind of diameter-changing centering guide, including central tube,
Flexible righting mechanism, plunger, filler and solvable packing；There are at least three vertical flexible to help in the outer end circle distribution of central tube
Positive mechanism；Flexible righting mechanism includes at least one set of upper righting board and lower righting board mutually covered and can extend limit, upper righting board
It is respectively elastic plate with lower righting board；From top to bottom arranged distribution has at least two diameters on central tube on the inside of flexible righting mechanism
Xiang Kong, interior be mounted of each radial hole have the radially-protruding plunger of energy, and water can be met by being filled in the radial hole on the inside of plunger
Or the filler that oil carries out extruding reaction is met, sealing, which is fixedly installed with, at the inner port of radial hole to insulate filler in radial hole
Interior solvable packing；Solvable packing is the packing that can be dissolved in water or oil-soluble soluble material.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution:
Above-mentioned central tube is externally provided with righting lug, nib corresponding with flexible righting mechanism, and radial hole extends out to righting lug, nib
Outer end face；The flexible righting mechanism is mounted on righting lug, nib；Convex is respectively equipped in righting lug, nib top and bottom
The righting board hangers risen, is respectively equipped with hanging hole on each righting board hangers；Upper righting board is placed in the extension of upside righting board hangers
In hole, the cross tube that can be hung at the hanging hole of upside is connected in upper righting board upper end；Lower righting board is placed in downside righting board
In the hanging hole of hangers, the sheer pole that can be limited at the hanging hole of downside is equipped in lower righting board lower end.
Above-mentioned upper righting board may include the mutual running-on section of limit of the plate body section one of middle and upper part, the overlay segment one of lower part and lower end
One；Straight down, overlay segment one is inclined outwardly plate body section one, is limited mutual running-on section one and is sloped inwardly and be equipped on its inclined surface
Mutual running-on one；Lower righting board includes the mutual running-on section two of limit of the plate body section two of middle and lower part, the overlay segment two on top and upper end；Plate
Straight up, overlay segment two slopes inwardly body section two, and overlapped with overlay segment one；Mutual running-on section two is limited to be inclined outwardly simultaneously
Mutual running-on two is equipped on its inclined surface, lower righting board upper end is sleeved on one upside of righting board overlay segment by mutual running-on two
In plate body section one；Upper righting board lower end is sleeved in the plate body section two of lower two downside of righting board overlay segment by mutual running-on one.
Above-mentioned radial hole is three, is distributed as the radial hole of the top, the radial hole at middle part and the lowermost radial hole；Most
The radial hole of upper end is located on the righting lug, nib and central tube of corresponding one medium position of plate body section, and the radial hole at middle part, which is located at, to be corresponded to
On the righting lug, nib and central tube of two medium position of overlay segment；The lowermost radial hole is located at corresponding two medium position of plate body section
On righting lug, nib and central tube.
The top of above-mentioned righting lug, nib and upper end righting board hangers is outer inclined-plane obliquely；Righting lug, nib and lower end righting
The bottom end of plate hangers is outer inclined-plane obliquely.Inclined-plane plays the role of importing, further facilitates this diameter-changing centering guide and enters well.
Above-mentioned solvable packing is using soluble foam packing；Or/and filler is expanded rubber filler.
The utility model reasonable and compact in structure, it is easy to use；Packing can be dissolved by being injected into well and make filler
The liquid of extruding after liquid dissolves packing, further occurs extruding with filler and reacts, and filler expands outward and pushes plunger will
Upper righting board and lower righting board jack up outward, make righting board and lower righting board that the state arched be presented and act in the borehole wall
The righting of bunch tube is realized in side；Wherein, the structure itself mutually detained between upper righting board and lower righting board has the change centainly extended
Amount, with the driving of filler extruding, the variable of this elongation just converts the outer diameter variable in state of arching, with filler extruding
Driving, the outer diameter that arches of upper righting board and lower righting board are being gradually increased, and until acting on the inside of the borehole wall, can be suitable for hole diameter
Excessive and can not use at the well section of righting, applicable range is wider.
Detailed description of the invention
Attached drawing 1 is the main view half section structure diagram of the best embodiment of the utility model.
Cylinder centered on coding in attached drawing is respectively as follows: 1,2 be plate body section one, and 3 be plate body section two, and 4 be righting lug, nib, and 5 are
Righting board hangers, 6 be hanging hole, and 7 be overlay segment one, and 8 is limit mutual running-on section one, and 9 be mutual running-on one, and 10 be overlay segment two, 11
To limit mutual running-on section two, 12 be mutual running-on two, and 13 be plunger, and 14 be filler, and 15 be solvable packing, and 16 be radial hole, and 17 are
Cross tube, 18 be sheer pole.
Specific embodiment
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to specification
The Butut mode of attached drawing 1 is described, such as: the positional relationship of upper and lower, left and right is the Butut according to Figure of description 1
Direction determines.
The utility model is further described below with reference to examples and drawings:
As shown in Fig. 1, which includes central tube 1, flexible righting mechanism, plunger 13, filler 14 and solvable
Packing 15；There are at least three vertical flexible righting mechanisms in the outer end circle distribution of central tube 1；Flexible righting mechanism includes extremely
Few one group of upper righting board and lower righting board for mutually covering and capable of extending limit, upper righting board and lower righting board are respectively elastic plate；It stretches
From top to bottom arranged distribution has at least two radial holes 16, limit in each radial hole 16 on central tube 1 on the inside of contracting righting mechanism
Position be equipped with can radially-protruding plunger 13, carry out extruding filled with can meet water or meet oil in the radial hole 16 of 13 inside of plunger
The filler 14 of reaction, at the inner port of radial hole 16 sealing be fixedly installed with can by filler 14 insulate in radial hole 16 can
Molten packing 15；Solvable packing 15 is the packing that can be dissolved in water or oil-soluble soluble material.In use, this centralizer is with set
Pipe string G.I.H；After pipe string is lowered into designated position, into well, packing can be dissolved and be made the liquid of 14 extruding of filler by injection
Body after liquid dissolves packing, further occurs extruding with filler 14 and reacts, filler 14 expands outward and pushes plunger 13 will be upper
Righting board and lower righting board jack up outward, make righting board and lower righting board that the state arched be presented and act on the inside of the borehole wall,
Realize the righting of bunch tube；Wherein, the structure itself mutually detained between upper righting board and lower righting board has the variable centainly extended, with
The driving of 14 extruding of filler, the variable of this elongation just convert in the outer diameter variable of state of arching, with the drive of filler extruding
Dynamic, the outer diameter that arches of upper righting board and lower righting board is being gradually increased, until acting on the inside of the borehole wall；Sheet under same size
Centralizer, spring centralizer are compared with rigid centralizer three, this diameter-changing centering guide can carry out variable diameter tune according to the width of well section
Section can be used at wider well section using, and applicable range is wider.
Above-mentioned diameter-changing centering guide can be made further optimization and/or improvements according to actual needs:
As shown in Fig. 1, it is externally provided with righting lug, nib 4 corresponding with flexible righting mechanism in central tube 1, radial hole 16 is outside
Extend to the outer end face of righting lug, nib 4；The flexible righting mechanism is mounted on righting lug, nib 4；In 4 upper end of righting lug, nib under
End is respectively equipped with the righting board hangers 5 of outwardly convex, is respectively equipped with hanging hole 6 on each righting board hangers 5；Upper righting board is placed in
In the hanging hole 6 of upside righting board hangers 5, the cross tube 17 that can be hung at the hanging hole 6 of upside is connected in upper righting board upper end；
Lower righting board is placed in the hanging hole 6 of downside righting board hangers 5, and being equipped in lower righting board lower end can be limited in downside hanging hole 6
The sheer pole 18 at place.Wherein, upper righting board and lower righting board are passed through into hanging hole 6 and is mounted on by cross tube 17 with sheer pole 18
On righting board hangers 5, not only play the role of limit to upper righting board and lower righting board；It can also make righting board when arching
There is the radial space being bent outwardly because arching deformation in hanging hole 6 with lower righting board, satisfies the use demand；Secondly, righting is prominent
Rib 4 plays the role of being able to maintain bunch tube downlink placed in the middle in well, therefore exists to contact between righting lug, nib 4 and the borehole wall and rub
It wipes；Based on such structure, righting board hangers 5 is equipped on righting lug, nib 4, the righting board hangers 5 of upper and lower ends and righting are prominent
U slot is formed between 4 outer end face of rib, upper righting board and lower righting board just horizontal can further avoid tripping in the U slot
Upper righting board rubs or hangs the case where touching, leading to righting in advance generation with lower contact between righting board and the borehole wall in journey, improves this
The reliability of diameter-changing centering guide.
As shown in Fig. 1, upper righting board includes plate body section 1, the overlay segment 1 of lower part and the limit of lower end of middle and upper part
Mutual running-on section 1；Straight down, overlay segment 1 is inclined outwardly plate body section 1, is limited mutual running-on section 1 and is sloped inwardly and at it
Inclined surface is equipped with mutual running-on 1；Lower righting board includes the plate body section 23 of middle and lower part, the overlay segment 2 10 on top and upper end
Limit mutual running-on section 2 11；Straight up, overlay segment 2 10 slopes inwardly plate body section 23, and overlapped with overlay segment 1；
It limits mutual running-on section 2 11 to be inclined outwardly and be equipped with mutual running-on 2 12 on its inclined surface, lower righting board upper end passes through mutual running-on two
12 are sleeved in the plate body section 1 of one 7 upside of righting board overlay segment；Upper righting board lower end is sleeved on down by mutual running-on 1
In the plate body section 23 of 2 10 downside of righting board overlay segment.This upper righting board mutually covered and lower righting board pass through limit after arching
Position mutually offsets between running-on section 1 and the mutual running-on section 2 11 of limit and realizes limit；Its elongation is overlay segment 1 and overlay segment two
The sum of 10.
For the righting effect for further increasing upper righting board Yu lower righting board, as shown in Fig. 1, radial hole 16 is three,
It is distributed as the radial hole 16 of the top, the radial hole 16 at middle part and the lowermost radial hole 16；The radial hole 16 of the top is located at
On the righting lug, nib 4 and central tube 1 of corresponding one 2 medium position of plate body section, the radial hole 16 at middle part is located at corresponding overlay segment 2 10
On the righting lug, nib 4 and central tube 1 of medium position；The lowermost radial hole 16 is located at helping for corresponding 23 medium position of plate body section
On positive lug, nib 4 and central tube 1.
Shown in attached drawing 1, the top of righting lug, nib 4 and upper end righting board hangers 5 is outer inclined-plane obliquely；Righting lug, nib 4
Bottom end with lower end righting board hangers 5 is outer inclined-plane obliquely.Inclined-plane plays the role of importing, further facilitates this variable diameter and helps
Positive device enters well.
As needed, solvable packing 15 is using soluble foam packing；Or/and filler 14 is expanded rubber filler.
The above technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and best implementation
Effect can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (10)
1. a kind of diameter-changing centering guide, it is characterised in that including central tube, flexible righting mechanism, plunger, filler and solvable packing；?
The outer end circle distribution of central tube has at least three vertical flexible righting mechanisms；Flexible righting mechanism includes at least one set of mutually set
And the upper righting board and lower righting board of limit can be extended, upper righting board and lower righting board are respectively elastic plate；Flexible righting mechanism
From top to bottom arranged distribution has at least two radial holes on the central tube of inside, and being mounted in each radial hole has and can radially stretch
Plunger out, filled with that can meet water or meet the filler that oil carries out extruding reaction in the radial hole on the inside of plunger, in radial hole
Sealing, which is fixedly installed with, at inner port to insulate the solvable packing in radial hole for filler；Solvable packing is that can be dissolved in water or can
It is dissolved in the packing of the soluble material of oil.
2. diameter-changing centering guide according to claim 1, it is characterised in that central tube is externally provided with corresponding with flexible righting mechanism
Righting lug, nib, radial hole extends out to the outer end face of righting lug, nib；The flexible righting mechanism is mounted on righting lug, nib；
It is respectively equipped with the righting board hangers of outwardly convex in righting lug, nib top and bottom, is respectively equipped with extension on each righting board hangers
Hole；Upper righting board is placed in the hanging hole of upside righting board hangers, and upside hanging hole can be hung over by being connected in upper righting board upper end
The cross tube at place；Lower righting board is placed in the hanging hole of downside righting board hangers, and being equipped in lower righting board lower end can be limited
Sheer pole at the hanging hole of downside.
3. diameter-changing centering guide according to claim 1 or 2, it is characterised in that upper righting board includes the plate body section of middle and upper part
One, the overlay segment one of lower part and the mutual running-on section one of the limit of lower end；Straight down, overlay segment one is inclined outwardly plate body section one, limit
Mutually running-on section one slopes inwardly and is equipped with mutual running-on one on its inclined surface for position；Lower righting board include middle and lower part plate body section two,
The overlay segment two on top and the mutual running-on section two of the limit of upper end；Plate body section two straight up, overlay segment two slope inwardly, and with again
Folded section one is overlapped；Mutual running-on section two is limited to be inclined outwardly and be equipped with mutual running-on two, lower righting board upper end on its inclined surface
It is sleeved on by mutual running-on two in the plate body section one of upper one upside of righting board overlay segment；Upper righting board lower end is a set of by mutual running-on
In the plate body section two of lower two downside of righting board overlay segment.
4. diameter-changing centering guide according to claim 1 or 2, it is characterised in that radial hole is three, is distributed as the top
Radial hole, the radial hole at middle part and the lowermost radial hole；The radial hole of the top is located at corresponding one medium position of plate body section
On righting lug, nib and central tube, the radial hole at middle part is located on the righting lug, nib and central tube of corresponding two medium position of overlay segment；
The lowermost radial hole is located on the righting lug, nib and central tube of corresponding two medium position of plate body section.
5. diameter-changing centering guide according to claim 3, it is characterised in that radial hole is three, is distributed as the radial direction of the top
Hole, the radial hole at middle part and the lowermost radial hole；The radial hole of the top is located at the righting of corresponding one medium position of plate body section
On lug, nib and central tube, the radial hole at middle part is located on the righting lug, nib and central tube of corresponding two medium position of overlay segment；It is most lower
The radial hole at end is located on the righting lug, nib and central tube of corresponding two medium position of plate body section.
6. diameter-changing centering guide described according to claim 1 or 2 or 5, it is characterised in that righting lug, nib and upper end righting board hangers
Top be outer inclined-plane obliquely；The bottom end of righting lug, nib and lower end righting board hangers is outer inclined-plane obliquely.
7. diameter-changing centering guide according to claim 4, it is characterised in that the top of righting lug, nib and upper end righting board hangers
For inclined-plane outside obliquely；The bottom end of righting lug, nib and lower end righting board hangers is outer inclined-plane obliquely.
8. diameter-changing centering guide described according to claim 1 or 2 or 5 or 7, it is characterised in that solvable packing is using soluble foam
Packing；Or/and filler is expanded rubber filler.
9. diameter-changing centering guide according to claim 3, it is characterised in that solvable packing is using soluble foam packing；Or/
It is expanded rubber filler with, filler.
10. diameter-changing centering guide according to claim 6, it is characterised in that solvable packing is using soluble foam packing；Or/
It is expanded rubber filler with, filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525771.2U CN208777923U (en) | 2018-09-18 | 2018-09-18 | Diameter-changing centering guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821525771.2U CN208777923U (en) | 2018-09-18 | 2018-09-18 | Diameter-changing centering guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208777923U true CN208777923U (en) | 2019-04-23 |
Family
ID=66161732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821525771.2U Active CN208777923U (en) | 2018-09-18 | 2018-09-18 | Diameter-changing centering guide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208777923U (en) |
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2018
- 2018-09-18 CN CN201821525771.2U patent/CN208777923U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201104 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 834000 Drilling Engineering Research Institute, No. 98 Youyi Road, Karamay District, Karamay City, Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right |