CN207420517U - A kind of reconditioning casing milling shoe - Google Patents
A kind of reconditioning casing milling shoe Download PDFInfo
- Publication number
- CN207420517U CN207420517U CN201721557667.7U CN201721557667U CN207420517U CN 207420517 U CN207420517 U CN 207420517U CN 201721557667 U CN201721557667 U CN 201721557667U CN 207420517 U CN207420517 U CN 207420517U
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- CN
- China
- Prior art keywords
- milling tool
- taper
- guide wire
- conical surface
- via hole
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Abstract
A kind of reconditioning casing milling shoe,Including body,Taper milling tool,Flat milling tool,Guide wire,Drill rod thread is arranged at the top of body,Taper milling tool,The material of flat milling tool is hard alloy,Body has inner via hole,There are 26 vertical-shaped flushed channels on the outer wall of body,26 flushing holes are drilled on body,Inner via hole and the flushed channel described in the flushing hole unicom,Body is three diameter segments,It is transition circular conical surface between two, the top diameter segment of three diameter segments,The quick-fried weldering taper milling tool at the transition circular conical surface,The shape of taper milling tool is taper,Flat milling tool is welded on the lower face upper berth of the mid diameter section of body,The lower face of body is set as middle circular conical surface,Guide wire is connected in the lower part of body,There is centre bore in guide wire,The centre bore is communicated with the inner via hole,The lower end of guide wire processes starting taper body,It can be with two-way to deformation,Bad break,The casing of undergauge carries out shaping,With significant economic benefit.
Description
Technical field
The utility model is a kind of instrument of oilfield oil well, is a kind of instrument of repairing casing, is specifically one kind
Reconditioning casing milling shoe.
Background technology
After the completion of oil-water well drilling well, tripping in metal steel pipe to carry out completion, this root steel pipe of G.I.H is known as casing.Oil
In production after a certain period of time, the casings of some oil-water wells can deform well, bad break, undergauge, and oil-water well is just after there are these damages
It cannot normally produce, it is necessary to carry out shaping well workover, then carry out casing patching to it again, casing deformation, bad break, undergauge obtain
A degree of repairing, enables casing damaged well to resume production.Most of shaping well workover all carries out shaping well workover using milling shoe.But at present
Milling shoe it is simple in structure, function is single, can only unidirectionally shaping and milling, it is impossible to meet the reparation of casing-broken well, cause casing
The reparation of broken well needs to carry out large repairs formula shaping using large scale equipment, considerably increases workover cost and well workover time.
The content of the invention
The purpose of this utility model is a kind of reconditioning casing milling shoe of design, overcomes the problems, such as that existing junk mill exists, smoothly whole
Shape covers milling casing, and casing damaged well is enable to resume production.
What the purpose of this utility model was realized in：Including body, taper milling tool, flat milling tool, guide wire, sheet
Drill rod thread is arranged at the top of body, and taper milling tool, the material of flat milling tool are hard alloy, and body has inner via hole, body
The flushed channel for having 2-6 items vertical-shaped on outer wall is drilled with 2-6 flushing hole, the inner via hole described in the flushing hole unicom on body
With the flushed channel, body is three diameter segments, is transition circle between two, the top diameter segment of described three diameter segments
The conical surface, the quick-fried weldering taper milling tool at the transition circular conical surface, the shape of taper milling tool is taper, straight in the centre of body
Flat milling tool is welded on the lower face upper berth of footpath section, and the lower face of body is set as middle circular conical surface, and guide wire is connected in the lower part of body,
There is centre bore in guide wire, the centre bore is communicated with the inner via hole, and the lower end of guide wire processes starting taper body.
The beneficial effects of the utility model are：The lower part connection guide wire of body, the lower face of body are set as middle circular conical surface,
Guide wire is connected in the lower part of body, the lower end of guide wire processes starting taper body, and the utility model is enable smoothly to descend to casing
Deformation, bad break, undergauge section weld flat milling tool on the lower face upper berth of the mid diameter section of body, make the utility model can be with
Downward milling casing simultaneously carries out shaping to it, the quick-fried weldering taper milling tool at transition circular conical surface, allow the utility model to
Milling and shaping are carried out to the deformed casing on the utility model in upper lifting process, therefore, the utility model overcomes existing
The problem of with the presence of junk mill, can carry out shaping with the two-way casing to deformation, bad break, undergauge, make it have the item of casing patching
Part can make casing damaged well resume production, and have significant economic benefit.
Description of the drawings
Attached drawing 1 is the installation diagram of the utility model embodiment.
Specific embodiment
The embodiment of 1 pair of the utility model illustrates below in conjunction with the accompanying drawings.
As shown in Figure 1, the embodiment of the utility model includes body 1, taper milling tool 4, flat milling tool 7, guide wire
10, drill rod thread 2 is arranged at the top of body 1, and the drilling rod that tubing string lower part can be repaiied with set is connected, taper milling tool 4, flat milling tool
7 material is hard alloy, and hardness is much higher than the hardness of casing, can with milling deformation, bad break, undergauge casing, body 1 has
Inner via hole 8, the flushed channel 5 for having 2-6 items vertical-shaped on the outer wall of body 1 are drilled with 2-6 flushing hole 6, the flushing on body 1
Inner via hole 8 and the flushed channel 5 described in 6 unicom of hole make it that can be with pressure flush milling, body 1 in milling casing
Three diameter segments are transition circular conical surface 3 between two, the top diameter segment of described three diameter segments, in the transition circular cone
Quick-fried weldering taper milling tool 4 at face 3, the shape of taper milling tool 4 is taper, on the lower face upper berth of the mid diameter section of body 1
Flat milling tool 7 is welded, the lower face of body 1 is set as middle circular conical surface 9, and guide wire 10 is connected in the lower part of body 1, guide wire 10
Length is 1-9m, and specific length is determined by hole condition, there is centre bore 11 in guide wire 10, the centre bore 11 with it is described interior logical
Hole 8 communicates, and can form irrigation channel, and sundries in well is rinsed, and improves quality in well workover, the lower end processing of guide wire 10
Go out starting taper body 12, can be guided into the casing of deformation.
Claims (1)
1. a kind of reconditioning casing milling shoe, including body（1）, taper milling tool（4）, flat milling tool（7）, guide wire（10）, this
Body（1）Top have drill rod thread（2）, taper milling tool（4）, flat milling tool（7）Material for hard alloy, feature
It is：Body（1）There is inner via hole（8）, body（1）Outer wall on have 2-6 items vertical-shaped flushed channel（5）, body（1）On be drilled with 2-6
A flushing hole（6）, the flushing hole（6）Inner via hole described in unicom（8）With the flushed channel（5）, body（1）For three
Diameter segment is transition circular conical surface between two, the top diameter segment of described three diameter segments（3）, in the transition circular conical surface
（3）Locate quick-fried weldering taper milling tool（4）, taper milling tool（4）Shape for taper, in body（1）Mid diameter section lower end
Weld flat milling tool in face upper berth（7）, body（1）Lower face be set as middle circular conical surface（9）, in body（1）Lower part connection guiding
Pipe（10）, guide wire（10）Inside there is centre bore（11）, the centre bore（11）With the inner via hole（8）It communicates, guide wire
（10）Lower end process starting taper body（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557667.7U CN207420517U (en) | 2017-11-21 | 2017-11-21 | A kind of reconditioning casing milling shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557667.7U CN207420517U (en) | 2017-11-21 | 2017-11-21 | A kind of reconditioning casing milling shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420517U true CN207420517U (en) | 2018-05-29 |
Family
ID=62303550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721557667.7U Active CN207420517U (en) | 2017-11-21 | 2017-11-21 | A kind of reconditioning casing milling shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420517U (en) |
-
2017
- 2017-11-21 CN CN201721557667.7U patent/CN207420517U/en active Active
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