CN203035144U - Mill shoe used for cleaning tieback tube - Google Patents
Mill shoe used for cleaning tieback tube Download PDFInfo
- Publication number
- CN203035144U CN203035144U CN 201320060959 CN201320060959U CN203035144U CN 203035144 U CN203035144 U CN 203035144U CN 201320060959 CN201320060959 CN 201320060959 CN 201320060959 U CN201320060959 U CN 201320060959U CN 203035144 U CN203035144 U CN 203035144U
- Authority
- CN
- China
- Prior art keywords
- milling
- milling cutter
- tieback tube
- shoe
- cleaning
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a mill shoe used for cleaning a tieback tube. The mill shoe used for cleaning the tieback tube comprises a body (6), a milling cutter head (7) is arranged at the lower end of the body (6), a conical transition milling head (8) is formed at the lower end face of the milling cutter head (7), and the periphery surface of the milling cutter head (7) is provided with a plurality of milling cutters (3) which are vertically arranged. A water injection cavity (4) is formed inside the body (6), an inclined water outlet (5) is formed in the side wall at the lower end of the water injection cavity (4), and conical threads (1) are arranged at the top end of the water injection cavity (4). The mill shoe used for cleaning the tieback tube has the advantages of being simple in structure, high in efficiency, stable in structure, long in service life, and low in cost.
Description
Technical field
The utility model relates to a kind of oil drilling machine accessory, specifically is a kind of for the milling shoe that cleans the tieback tube, belongs to the petroleum machinery field.
Background technology
The tieback tube is the special cementing tool that is connected on the tail pipe top, and the tieback tube is exactly can be with tie back liner to well head.Such as the drilling liner cementing failure, the stratum has gone out salt solution, new sleeve pipe can be inserted the tieback tube so, realizes tieback.The tieback tube is because it needs good sealing, so the tieback tube inwall after using need guarantee good fineness, to guarantee tieback tube sealing, so, tieback tube after the use all can clean again by milling shoe, milling shoe is used for the cement impurity on the cleaning tieback tube inwall, so that the tieback plug inserts smoothly, and forms effectively sealing.The most complex structure cost of present milling shoe height, and cleaning efficiency is low, is unfavorable for practicality.
The utility model content
Problem to be solved in the utility model provides a kind of for the milling shoe that cleans the tieback tube, is used for solving milling shoe complex structure, cost height, inefficient problem in the past.
The technical scheme that the utility model provides is: the milling shoe that is used for cleaning the tieback tube, comprise body, the body lower end is the milling cutter head, milling head subordinate end face forms the transition milling head of taper, described milling cutter head periphery is provided with several milling cutters of vertically placing, described body interior is provided with water-injecting cavity, and water-injecting cavity lower end sidewall is provided with the weep hole of inclination, and described water-injecting cavity also is provided with tapered thread topmost.Weep hole inside links to each other with water-injecting cavity, and the water in the water-injecting cavity flows into tieback tube inside by weep hole, and it is wet that the cement of tieback tube inwall and other impurity are oozed, and reduces impurity intensity, makes things convenient for milling cutter to clean, thereby protected cutter when raising the efficiency.
Described weep hole is obliquely installed horizontal by 45 degree.Weep hole is obliquely installed horizontal by 45 degree to be convenient to water and can to flow downward along tieback tube inwall, when milling cutter when washing impurity, the impurity of milling cutter lower end is drenched by water, milling cutter can be worked continuously, and has improved efficient.
Described body upper end sidewall has been horizontally disposed with tapped through hole perpendicular to body.Tapped through hole is used for the fixedly link of milling shoe connector and milling shoe, avoids milling shoe thread failure and bring accident when working.
The screw thread effective length of described tapered thread is 5-8 centimetre.Screw thread need bear bigger responsive to axial force when connecting driving member, the insufficient strength that is threaded if the screw thread effective length is too short, thereby screw thread easily lost efficacy and causes accident to take place, and the long then waste material of screw thread effective length and increase cost are so the effective length of screw thread is decided to be 5-8 centimetre.
Described weep hole is obliquely installed horizontal by 60 °.Weep hole is obliquely installed the water outlet effect of having strengthened weep hole horizontal by 60 °, has increased milling cutter efficient.
Described milling cutter adopts the gas welding of alloy steel milling cutter on milling cutter head periphery.The alloy steel milling cutter has high strength, high tenacity, wear-resisting and corrosion resistant characteristic, can prolong the application life of milling shoe greatly, adopts the gas welding mode to weld simultaneously and makes milling cutter and milling shoe be connected firmly Stability Analysis of Structures.
Advantage of the present utility model is: this milling shoe for cleaning tieback tube of the utility model design, and not only simple in structure, efficient height, and Stability Analysis of Structures, long service life, cost is low.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Label among the figure is expressed as respectively: 1, tapered thread; 2, tapped through hole; 3, milling cutter; 4, water-injecting cavity; 5, weep hole; 6, body; 7, milling cutter head; 8, transition milling head.
The specific embodiment
Embodiment
Referring to Fig. 1, be used for cleaning the milling shoe of tieback tube, comprise body 6, body 6 lower ends are milling cutter heads 7, milling cutter head 7 lower surfaces form the transition milling head 8 of taper, and described milling cutter head 7 peripheries are provided with several milling cutters of vertically placing 3, and described body 6 inside are provided with water-injecting cavity 4, water-injecting cavity 4 lower end sidewalls are provided with the weep hole 5 of inclination, and described water-injecting cavity 4 also is provided with tapered thread 1 topmost.
Described water-injecting cavity 4 lower end sidewalls are provided with the weep hole 5 of inclination, and weep hole 5 runs through body 6 and milling cutter 3.
Described weep hole 5 is obliquely installed horizontal by 45 degree.
Described body 6 upper end sidewalls have been horizontally disposed with tapped through hole 2 perpendicular to body 6.
The screw thread effective length of described tapered thread 1 is 5-8 centimetre.
Described weep hole 5 is obliquely installed horizontal by 60 °.
Described milling cutter 3 adopts the gas welding of alloy steel milling cutter on milling cutter head 7 peripheries.
In use, milling shoe connects the back by connector and feeds in the tieback tube, and the milling shoe rotation is cleaned by 3 pairs of tieback tubes of milling cutter inwall, removes impurity, increases the fineness of inwall; The water-injecting cavity 4 of milling shoe inside feeds water injection pipe, and water is thrown to tieback tube inwall by weep hole 5 rotations during the milling shoe rotary work, and it is wet that inwall impurity is oozed, and reduces the workload of milling cutter 3, the convenient cleaning, and practicality improves greatly.
Simultaneously tapped through hole 2 is used for the fixedly link of milling shoe connector and milling shoe, avoids milling shoe thread failure and bring accident when working, and has improved reliability and the safety of milling shoe connection.
Can well realize the utility model as mentioned above.
Claims (6)
1. be used for cleaning the milling shoe of tieback tube, comprise body (6), it is characterized in that: body (6) lower end is milling cutter head (7), milling cutter head (7) lower surface forms the transition milling head (8) of taper, described milling cutter head (7) periphery is provided with several milling cutters of vertically placing (3), described body (6) inside is provided with water-injecting cavity (4), and water-injecting cavity (4) lower end sidewall is provided with the weep hole (5) of inclination, and described water-injecting cavity (4) also is provided with tapered thread (1) topmost.
2. according to claim 1 for the milling shoe that cleans the tieback tube, it is characterized in that: described weep hole (5) is obliquely installed horizontal by 45 degree.
3. according to claim 1 for the milling shoe that cleans the tieback tube, it is characterized in that: described body (6) upper end sidewall has been horizontally disposed with tapped through hole (2) perpendicular to body (6).
4. according to claim 1 for the milling shoe that cleans the tieback tube, it is characterized in that: the screw thread effective length of described tapered thread (1) is 5-8 centimetre.
5. according to claim 1 for the milling shoe that cleans the tieback tube, it is characterized in that: described weep hole (5) is obliquely installed horizontal by 60 °.
6. according to claim 1 for the milling shoe that cleans the tieback tube, it is characterized in that: described milling cutter (3) adopts the gas welding of alloy steel milling cutter on milling cutter head (7) periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060959 CN203035144U (en) | 2013-02-04 | 2013-02-04 | Mill shoe used for cleaning tieback tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060959 CN203035144U (en) | 2013-02-04 | 2013-02-04 | Mill shoe used for cleaning tieback tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035144U true CN203035144U (en) | 2013-07-03 |
Family
ID=48687277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320060959 Expired - Fee Related CN203035144U (en) | 2013-02-04 | 2013-02-04 | Mill shoe used for cleaning tieback tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386246A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | It is a kind of to sweep plug, the drilling tool of milling and method for tie-back sleeve |
-
2013
- 2013-02-04 CN CN 201320060959 patent/CN203035144U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386246A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | It is a kind of to sweep plug, the drilling tool of milling and method for tie-back sleeve |
| CN109386246B (en) * | 2017-08-08 | 2021-01-05 | 中国石油化工股份有限公司 | Drilling tool and method for plug sweeping, grinding and milling of tieback cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20140204 |