CN202280437U - Reverse section milling cutter - Google Patents
Reverse section milling cutter Download PDFInfo
- Publication number
- CN202280437U CN202280437U CN201120461953XU CN201120461953U CN202280437U CN 202280437 U CN202280437 U CN 202280437U CN 201120461953X U CN201120461953X U CN 201120461953XU CN 201120461953 U CN201120461953 U CN 201120461953U CN 202280437 U CN202280437 U CN 202280437U
- Authority
- CN
- China
- Prior art keywords
- milling cutter
- section milling
- reverse section
- reverse
- section
- 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 - Lifetime
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Abstract
The utility model discloses a reverse section milling cutter. The reverse section milling cutter mainly comprises a joint, a main body, a piston, a pressure adjusting current limiting plug and a return spring and is characterized in that a cutter body seat is fixed at the middle lower part of the main body by using a bolt; the cutter body seat is connected with a section milling cutter body by using a pin shaft; and a milling cutter body is welded at the end surface of the lower part of the main body. The reverse section milling cutter disclosed by the utility model has the advantages of simple structure, low cost, capability of clearing accumulation or blockage of the pipe wall at the fracture part as well as smoothly cutting and polishing the fracture; and the reverse section milling pipe body has the advantages of convenience in operation and long service life.
Description
One, technical field: the utility model relates to the well workover of a kind of oil field with section miller tool, particularly a kind of reverse section milling cutter.
Two, background technology: at present, oil field repairing casing bad break well, i.e. the upper and lower fracture transverse shift of sleeve pipe, axial passage is less than 30mm between two fractures, and not having perhaps that passage bad break well gets through must the section of using miller tool.An existing section miller tool all is after cutting off complete cannula, and forward milling body from top to bottom obstruction such as accumulates when stopping like jam or tube wall, can't remove, and exists removing weak effect, inefficient shortcoming.
Three, summary of the invention: the purpose of the utility model just is to provide a kind of can remove the incision position obstruction, and carries out section miller tool---reverse section milling cutter of from bottom to top reverse milling body.The technical solution of the utility model is: said reverse section milling cutter; Mainly comprise joint, body, piston, pressure regulation current limliting plug and back-moving spring; There is the cutter hub seat middle and lower part at body through bolt; Through the bearing pin section of being connected with end mill body, welding-on has the milling cutter hub on the lower end surface of body on the cutter hub seat.The utility model is simple in structure, and is reasonable in design, can remove the incision position tube wall and accumulate or jam, and it is smooth that fracture is cut reconditioning, and reverse section is milled body.The utility model finishing, milling are effective, and efficient is high, have easy to operate, dependable performance, the advantage of long service life.
Four, description of drawings: Fig. 1 is the utility model embodiment master TV structure half section sketch map.
Five, the specific embodiment: with reference to accompanying drawing; Said reverse section milling cutter; Mainly comprise joint 1, body 2, piston 3, pressure regulation current limliting plug 4 and back-moving spring 5; There is cutter hub seat 6 middle and lower part at body 2 through bolt, and through the bearing pin section of being connected with end mill body 7, its effect is the milling body on the cutter hub seat 6; Welding-on has and is used for removing the milling cutter hub 8 that accumulates with jam on body 2 lower end surface.
The course of work of the utility model is: reverse section milling cutter is connected with drilling rod down to required section mills well location, as the reverse unlatching drilling rod when hindering that is hampered, milling cutter hub 8 is removed tube walls and is accumulated or jam.After fracture site, reverse unlatching drilling rod strengthens rotating speed, opens pump pressure, ascending supercharging gradually.Force piston 3 moves down, and promotes section end mill body 7 outside distendings, cutting reconditioning fracture.After the fracture reconditioning is smooth, on carry drilling rod, a section end mill body 7 begins upwards milling body, mills assigned address until section.After the section miller do to be accomplished, the stall termination of pumping, on carry drilling tool.
Claims (1)
1. reverse section milling cutter; Mainly comprise joint (1), body (2), piston (3), pressure regulation current limliting plug (4) and back-moving spring (5); It is characterized in that through bolt cutter hub seat (6) being arranged in the middle and lower part of body (2); Cutter hub seat (6) is gone up through the bearing pin section of being connected with end mill body (7), and welding-on has milling cutter hub (8) on the lower end surface of body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120461953XU CN202280437U (en) | 2011-11-02 | 2011-11-02 | Reverse section milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120461953XU CN202280437U (en) | 2011-11-02 | 2011-11-02 | Reverse section milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280437U true CN202280437U (en) | 2012-06-20 |
Family
ID=46226610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120461953XU Expired - Lifetime CN202280437U (en) | 2011-11-02 | 2011-11-02 | Reverse section milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280437U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727770A (en) * | 2015-03-18 | 2015-06-24 | 长江大学 | Section milling type casing pipe sidetracking windowing tool |
| CN108625811A (en) * | 2018-04-23 | 2018-10-09 | 西华大学 | A kind of casing section milling window opening tool |
| CN111980614A (en) * | 2020-08-28 | 2020-11-24 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN112112591A (en) * | 2020-09-30 | 2020-12-22 | 中国石油天然气集团有限公司 | Sleeve forging and milling tool and forging and milling method |
-
2011
- 2011-11-02 CN CN201120461953XU patent/CN202280437U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727770A (en) * | 2015-03-18 | 2015-06-24 | 长江大学 | Section milling type casing pipe sidetracking windowing tool |
| CN108625811A (en) * | 2018-04-23 | 2018-10-09 | 西华大学 | A kind of casing section milling window opening tool |
| CN108625811B (en) * | 2018-04-23 | 2020-01-10 | 西华大学 | Casing section milling windowing tool |
| CN111980614A (en) * | 2020-08-28 | 2020-11-24 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN111980614B (en) * | 2020-08-28 | 2022-11-15 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN112112591A (en) * | 2020-09-30 | 2020-12-22 | 中国石油天然气集团有限公司 | Sleeve forging and milling tool and forging and milling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |
|
| CX01 | Expiry of patent term |