CN2147340Y - All-position sleeve hole milling cutter - Google Patents
All-position sleeve hole milling cutter Download PDFInfo
- Publication number
- CN2147340Y CN2147340Y CN 92230167 CN92230167U CN2147340Y CN 2147340 Y CN2147340 Y CN 2147340Y CN 92230167 CN92230167 CN 92230167 CN 92230167 U CN92230167 U CN 92230167U CN 2147340 Y CN2147340 Y CN 2147340Y
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- blade
- distributary base
- piston assembly
- shunting disk
- 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
The utility model relates to an all-position casing sidetracking cutter used for treating cased variant wells and casing sidetracking directional wells. The all-position casing sidetracking cutter is composed of a cutterbody, a spilt-flow base, a connecting rod, a piston assembly, a spring, a cutter blade, a supporting head and a stop block. The utility model combined with a pump truck, or a drilling disk, or a power swivel, or a downhole drill motor can complete the work of windowing in sleeve pipes or sleeve pipes cutting and milling. Compared with the existing similar instruments, the all-position casing sidetracking cutter has the advantages of high efficiency, simple operation, convenient usage and low labor intensity and is a special tool having the spreading value.
Description
A kind of window mill that is used to administer casing deformation well and carries out the casing window sidetracking directional well.
At present the oil field instrument that is used to administer casing deformation well or casing window sidetracking directional well is junk mill, mills awl etc., the defective of this type of instrument, and the one, can only carry out milling to the casing wall in a certain orientation and window, speed is slow, and the window shape of windowing also is difficult for guaranteeing.The 2nd, this type of instrument does not cut and mills function.
The purpose of this utility model provide a kind of can overcome above-mentioned defective, simple in structure easy to use, can finish and window and cut the instrument that mills operation.
The purpose of this utility model can be finished by following measure:
The milling cutter of windowing is made up of cutter hub, shunting disk, distributary base, connecting rod, piston assembly, spring, blade, supporting member and limited block, shunting disk, distributary base, connecting rod link into an integrated entity, be packed on the body, connecting rod one end is installed between shunting disk and the distributary base, the other end of connecting rod passes from the centre bore of distributary base, and uniform passage is arranged on shunting disk and the distributary base; Piston assembly is positioned at body, and the one end is equipped with and is used for the supporting member of supporting blade, and the other end is supported by spring, and piston assembly has the central passage that allows connecting rod bar portion to insert; This external surface has groove, and being equipped with in the saturating groove can be around the blade of dead axle rotation; The corresponding blade of this external surface bottom is equipped with and is used for limiting the radially-protruding limited block of blade.
The purpose of this utility model can also be finished by following measure:
Windowing has four saturating grooves that distribute along garden week on the body of milling cutter, two long blade, two alternate being installed in the groove of shortened cutting blade, and the bottom surface of blade and side are welded with and are used for the alloy of milling.One group of transformable connecting rod of diameter is arranged.After fusing, shunting disk, distributary base, connecting rod be packed on the body with steel ball.
Accompanying drawing:
Fig. 1: comprehensive window mill
Be described in further detail below in conjunction with accompanying drawing:
There is a screw thread that can be connected with drilling tool body 1 upper end, shunting disk 2 is connected with distributary base 3 usefulness bolts or rivet, and be fixed on the body 1 with steel ball, connecting rod 4 one ends are between shunting disk 2 and distributary base 3, and the other end of connecting rod 4 passes from the centre bore of distributary base 3.Piston assembly 5 also is installed in the body 1, its upper end has spring 6 to support, and the lower end is embedded with the supporting member 8 that is used for promoting blade 7, and piston assembly 5 has a central passage, one end of connecting rod 4 can insert wherein, and liquid can pass through from the annular gap of the central passage of piston assembly 5 and connecting rod 4.The lower external face of body 1 has the saturating groove of four symmetries, and being equipped with in the saturating groove can be around the blade 7 of dead axle rotation, and in the bottom of blade 7, corresponding each blade 7 is equipped with limited block 9.
During work the utility model is connected on the drilling tool bottom G.I.H degree of depth of windowing in advance, starts surface pump, mud enters in the milling cutter of windowing through water tap, drilling tool.When original state, it is less that one end of connecting rod 4 inserts the annular gap that forms in the centre bore of piston assembly 5, when mud when it flows through, mud produces pressure in piston assembly 5 upper ends, when its pressure during greater than the support force of spring 6, piston assembly 5 moves down, supporting member 8 promotes blade 7 and opens the contact sleeve inside pipe wall, and the ground rotating disk drives the drilling tool rotation, and blade 7 begins to cut sleeve pipe, after sleeve pipe was cut, blade 7 opened up into maximum size.This moment, the support force of piston assembly 5 suffered mud pressures and spring 6 balanced each other, piston assembly 5 location.At this moment ground adds the pressure of the drill and begins to cut and mill sleeve pipe, and when having milled the termination of pumping of sleeve pipe ground, piston assembly 5 is got back to initial position under spring 6 effects, and blade 7 is regained.
The utility model advantage compared to existing technology is:
1, range of application is wider, applicable to windowing at the arbitrary position of sleeve pipe.
2, can use according to the difference of liquid discharge capacity the blade of different size, wherein two long blade, two shortened cutting blades alternately, point of a knife opens in same plane, is cutting when milling sleeve pipe like this, the power that acts on the body is even, is not easy to damage blade; Adopt steel ball to be connected easy accessibility after the shunting disk distributary base connects with between the body.
3, construction is simple, and mill-cut casing speed is fast, need not add any equipment.
Claims (5)
1, a kind of window mill that is used to administer casing deformation well and carries out the casing window sidetracking directional well is made up of cutter hub, shunting disk, distributary base, connecting rod, piston assembly, spring, blade, supporting member and limited block, it is characterized in that:
A, shunting disk, distributary base, connecting rod link into an integrated entity, and are packed on the body, and connecting rod one end is installed between shunting disk and the distributary base, and the other end of connecting rod passes from the centre bore of distributary base, and uniform through hole is arranged on shunting disk and the distributary base;
B, piston assembly are positioned at body, and the one end is equipped with and is used for the supporting member of supporting blade, and the other end is supported by spring, and piston assembly has the central passage that allows connecting rod bar portion to insert;
C, this external surface have groove, and being equipped with in the saturating groove can be around the blade of dead axle rotation;
D, the corresponding blade of this external surface bottom are equipped with and are used for limiting the radially-protruding limited block of blade.
2, window mill according to claim 1 is characterized in that having on the said body four saturating grooves along the distribution of garden week, two long blade, two alternate being installed in the groove of shortened cutting blade.
3, the milling cutter of windowing according to claim 1 and 2 is characterized in that being welded with alloy on the said blade.
4, the milling cutter of windowing according to claim 1 is characterized in that said connecting rod can be the connecting rod of one group of different-diameter.
5, the milling cutter of windowing according to claim 1 is characterized in that shunting disk, distributary base, the connecting rod after said the fusing is to be packed on the body with steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230167 CN2147340Y (en) | 1992-08-07 | 1992-08-07 | All-position sleeve hole milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230167 CN2147340Y (en) | 1992-08-07 | 1992-08-07 | All-position sleeve hole milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2147340Y true CN2147340Y (en) | 1993-11-24 |
Family
ID=33773359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230167 Expired - Fee Related CN2147340Y (en) | 1992-08-07 | 1992-08-07 | All-position sleeve hole milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2147340Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103392050A (en) * | 2011-01-20 | 2013-11-13 | 保罗·伯纳德·李 | Downhole tools |
-
1992
- 1992-08-07 CN CN 92230167 patent/CN2147340Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103392050A (en) * | 2011-01-20 | 2013-11-13 | 保罗·伯纳德·李 | Downhole tools |
| CN103392050B (en) * | 2011-01-20 | 2017-05-17 | 保罗·伯纳德·李 | Downhole tools |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |