CN2844405Y - The fluid power expanding expands milling cutter - Google Patents
The fluid power expanding expands milling cutter Download PDFInfo
- Publication number
- CN2844405Y CN2844405Y CN 200520106125 CN200520106125U CN2844405Y CN 2844405 Y CN2844405 Y CN 2844405Y CN 200520106125 CN200520106125 CN 200520106125 CN 200520106125 U CN200520106125 U CN 200520106125U CN 2844405 Y CN2844405 Y CN 2844405Y
- Authority
- CN
- China
- Prior art keywords
- piston rod
- fluid power
- milling cutter
- briquetting
- valve rod
- 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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- Earth Drilling (AREA)
Abstract
A kind of fluid power expanding expands milling cutter.Mainly solve existing workover tool and can not handle the problem that flexural deformation damages the well section.It is characterized in that: the interior lower clapboard of body (1) (6) throttle pipe (7) placed in the middle is built-in with valve rod (5), placing in the hollow piston rod (8) of throttle pipe (7) lower end, gapped between valve rod (5) external diameter and throttle pipe (7) internal diameter, piston rod (8) bottom is connected with the cover (10) of band shape boss, the outer of piston rod (8) is with spring (11) and is stuck in stage (9) upper end, be pressed with cutter hub (2) by briquetting (12) card in four elongated holes that body (1) bottom is divided equally, briquetting (12), has in the cutter hub (2) and the corresponding groove of boss (10) (13) on body (1) by screw.This fluid power expanding expands milling cutter not only can carry out hole enlargement to the sleeve pipe of casing damaged well, and can also be whole to the casing buckling distortion well shed repair of casing damaged well.
Description
Technical field:
The utility model relates to the used instrument in down-hole in the well workover field, oil field, and especially the fluid power expanding expands milling cutter.
Background technology:
In the oil field development field, the sleeve portion deformed damaged of down-hole for various reasons can ordinary production in order to make well, must carry out the shaping hole enlargement to the down-hole deformed casing and repair.And present sleeve pipe repair outfit such as milling shoe and junk mill, can only repair the distortion of sleeve pipe, that is to say that the G.I.H tool diameter is much, borehole diameter after its milling is exactly much, well for flexural deformation damages causes downhole tool to pass through difficulty, and the Scheme of Strengthening of casing damaged well section can not be implemented by designing requirement, perhaps can not take normal measure, influence the well workover quality well.
The utility model content:
Can not handle the deficiency that flexural deformation damages the well section in order to overcome existing workover tool, the utility model provides a kind of fluid power expanding to expand milling cutter, this fluid power expanding expands milling cutter not only can carry out hole enlargement to the sleeve pipe of casing damaged well, and can also be whole to the casing buckling distortion well shed repair of casing damaged well.
The technical solution of the utility model is: this fluid power expanding expands milling cutter and comprises the cutter hub and the body of alloy block in addition, throttle pipe in the body in the lower clapboard hole placed in the middle is built-in with valve rod, placing in the hollow piston rod of throttle pipe lower end, gapped between valve rod external diameter and throttle pipe internal diameter, the outer stage of piston rod is stuck on the intrinsic stage mutually, underpart of the piston rod is connected with the cover of band shape boss, the outer of piston rod is with spring and is stuck in the stage upper end, be pressed with cutter hub by the briquetting card in four elongated holes that the body bottom is divided equally, briquetting, has in the cutter hub and the corresponding groove of boss on body by screw.
Be equipped with spring between briquetting in the such scheme and cutter hub; The valve rod upper end places in the upper spacer hole placed in the middle of band liquid-through hole in the body; The valve rod upper end is covered with limited cap.
The beneficial effect that the utlity model has is: this fluid power expanding expands milling cutter owing to adopted such scheme, circulating mud produces pressure reduction between valve rod and throttle pipe gap, the promotion piston rod is descending, the boss of underpart of the piston rod gets out cutter hub, alloy block cutting sleeve pipe damaged location on the cutter hub, with sleeve pipe reparation and the expansion that damages, then well is extended to the 124-127 millimeter.So expanding milling cutter, this fluid power expanding not only can carry out hole enlargement to the sleeve pipe of casing damaged well, and can also be whole to the casing buckling distortion well shed repair of casing damaged well, guarantee that the reinforcement process of overhaul and other subsequent technique can smooth implementations.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-body among the figure, 2-cutter hub, 3-liquid-through hole, 4-upper spacer, 5-valve rod, 6-lower clapboard, 7-throttle pipe, 8-piston rod, 9-stage, 10-cover, 11-spring, 12-briquetting, 13-groove.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this fluid power expanding expands milling cutter and comprises the cutter hub 2 and the body 1 of alloy block in addition, upper spacer 4 holes placed in the middle in the body 1 are built-in with valve rod 5 upper ends, band liquid-through hole 3 on the upper spacer 4, the upper end of upper spacer 4 upper valve rods 5 is covered with limited cap, lower clapboard 6 holes placed in the middle below the upper spacer 4 are built-in with throttle pipe 7, throttle pipe 7 is built-in with the lower end of valve rod 5, throttle pipe 7 lower ends place in the hollow piston rod 8, gapped between valve rod 5 external diameters and throttle pipe 7 internal diameters, the outer stages of piston rod 8 are stuck on the stage 9 in the body 1 mutually, piston rod 8 is with spring 11 outward and is stuck on the stage 9, piston rod 8 bottoms are connected with the cover 10 of band shape boss, four elongated holes that body 1 bottom is divided equally are built-in with cutter hub 2, and cutter hub 2 is pressed on the body 1 by briquetting 12 cards, and 2 of briquetting 12 and cutter hubs are equipped with spring, briquetting 12, has in the cutter hub 2 and the corresponding groove 13 of boss on body 1 by screw.When going into the well, its body 1 upper end be connected with drill collar, centralizer, the workover tool that drilling rod and kelly bar are formed, when getting into cutter hub 2 instantly near the sleeve pipe damaged location, start rotating disk and make its drilling tool rotation, after the drilling tool stable working, in drilling rod, inject mud or water with pump truck, set up circulation, mud or water are by valve rod 5, the gap of throttle pipe 7 produces chock pressure difference, promote piston rod 8 descending and compression springs 11, the boss of piston rod 8 bottoms struts four cutter hubs 2, and the diameter that struts four cutter hubs 2 because of boss equals the diameter of former sleeve pipe, alloy block cutting sleeve pipe damaged location on the cutter hub 2 is so carry out hole enlargement to the sleeve pipe position of damaging.Find out that therefrom this fluid power expanding expands milling cutter and not only can carry out hole enlargement to the sleeve pipe of casing damaged well, and can also be whole, make overhaul reinforcement process and other subsequent technique can smooth implementation the casing buckling distortion well shed repair of casing damaged well.
Claims (4)
1, a kind of fluid power expanding expands milling cutter, comprise the cutter hub (2) and the body (1) of alloy block in addition, it is characterized in that: the throttle pipe (7) in the interior lower clapboard of body (1) (6) hole placed in the middle is built-in with valve rod (5), placing in the hollow piston rod (8) of throttle pipe (7) lower end, gapped between valve rod (5) external diameter and throttle pipe (7) internal diameter, the outer stage of piston rod (8) is stuck on the interior stage (9) of body (1) mutually, piston rod (8) bottom is connected with the cover (10) of band shape boss, the outer of piston rod (8) is with spring (11) and is stuck in stage (9) upper end, be pressed with cutter hub (2) by briquetting (12) card in four elongated holes that body (1) bottom is divided equally, briquetting (12), has in the cutter hub (2) and the corresponding groove of boss (10) (13) on body (1) by screw.
2, fluid power expanding according to claim 1 expands milling cutter, it is characterized in that: be equipped with spring between briquetting (12) and cutter hub (2).
3, fluid power expanding according to claim 1 expands milling cutter, it is characterized in that: valve rod (5) upper end places in the upper spacer (4) of band liquid-through hole (3) in the body (1) hole placed in the middle.
4, expand milling cutter according to claim 1 or 3 described fluid power expandings, it is characterized in that: valve rod (5) upper end is covered with limited cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106125 CN2844405Y (en) | 2005-08-22 | 2005-08-22 | The fluid power expanding expands milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106125 CN2844405Y (en) | 2005-08-22 | 2005-08-22 | The fluid power expanding expands milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844405Y true CN2844405Y (en) | 2006-12-06 |
Family
ID=37486357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520106125 Expired - Fee Related CN2844405Y (en) | 2005-08-22 | 2005-08-22 | The fluid power expanding expands milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844405Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704881A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN108316877A (en) * | 2017-12-29 | 2018-07-24 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling 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 |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
-
2005
- 2005-08-22 CN CN 200520106125 patent/CN2844405Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704881A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN102704881B (en) * | 2012-05-09 | 2015-04-22 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN108316877A (en) * | 2017-12-29 | 2018-07-24 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
| CN112901102A (en) * | 2019-12-04 | 2021-06-04 | 中国石油天然气股份有限公司 | Oil-water well casing deformation treatment device and method |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20140822 |
|
| EXPY | Termination of patent right or utility model |