CN2225537Y

CN2225537Y - Milling type under well milling shoe

Info

Publication number: CN2225537Y
Application number: CN 95213990
Authority: CN
Inventors: 郎世魁; 郎煜辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-02
Filing date: 1995-06-02
Publication date: 1996-04-24
Anticipated expiration: 2005-06-02

Abstract

The utility model discloses a milling-typed under well milling shoe mainly used for milling metal falling objects in a drilling well. The main body of the milling shoe is embedded and welded with a cutting plate, and is processed with a vertical plane parallel to the shaft line; the vertical plane is embedded and welded with a hard alloy blade; the end surface and the grinding tilting surface are welded with a hard alloy column and fragments. The utility model is the new under well milling shoe integrally combines the milling and the grinding, having reasonable structural design, advanced manufacturing process, conspicuous milling effect and high strength.

Description

Milling type shaft bottom junk mill

The utility model relates to a kind of drilling well maintenance tool, particularly a kind of milling type shaft bottom junk mill.

The situation in shaft bottom usually takes place to fall into after the damage of components of ground metal objects or drilling tool in the oil field in drilling process, in order to continue drilling well, these metal junks must be cleaned out, and takes out outside the well.In finishing the various operations of taking out metalwork, the instrument of normal use is exactly the shaft bottom junk mill.Existing junk mill structure is that junk mill just comes the abrasive metal junk with these hard alloy columnars or fragment at the carbide alloy fragment of the hard alloy columnar of the about 12mm of junk mill end welding-on length or the about 10mm of shop weldering thickness.Because the limited length of hard alloy columnar or fragment, therefore the time of using very shortly just need more renew junk mill, has increased when putting driller, has improved cost, has junk mill in addition now and only has ablation.Relevant by retrieval document still finds no and the same or analogous record of the utility model.

It is long that the purpose of this utility model just provides a kind of service time, and collection milling and grinding are the milling type shaft bottom junk mill of one.

Technical solution of the present utility model is:

Fixing cutting plate on the junk mill body, and on junk mill body and cutting plate, be processed with the upright plane that is parallel to the junk mill axis, welding-on has carbide chip on the upright plane; The part of upright planar end is processed into the grinding inclined-plane, and welding-on has hard alloy columnar on end face and grinding inclined-plane.

On end face and grinding inclined-plane, can repave weldering one deck carbide alloy fragment, strengthen the abrasive action of hard alloy columnar; According to the size of junk mill diameter, upright plane can be processed into 3～6.

The utility model is that collection milling and grinding are the novel shaft bottom junk mill of one, because reasonable in design, manufacturing process advanced person, the carbide alloy material is selected for use rationally, guaranteed the utlity model has high strength, high efficiency, the milling effect is remarkable, characteristics such as milling process length service time, shortened greatly when putting driller, reduced cost of production.

Below in conjunction with accompanying drawing and most preferred embodiment content of the present utility model is further elaborated.

Fig. 1 is a structural front view of the present utility model;

Fig. 2 is a structure vertical view of the present utility model.

With reference to accompanying drawing, be example with junk mill with four upright planes.Through on the junk mill body 1 of Milling Process, adopt welding procedure to be fixed with cutting plate 2, come to two and the symmetrical distribution of one-tenth center; Be processed with four and be parallel to the junk mill axis on junk mill body 1 and cutting plate 2, be about the upright plane 3 of 100mm, welding-on has the carbide chip 5 of many circles on this plane, forms a plurality of milling planes.The part of the end face 7 on upright plane 3 is processed into grinding inclined-plane 4, and welding-on has the hard alloy columnar 6 of the about 20mm of length on end face 7 and grinding inclined-plane 4, is used for grinding shaft bottom metal junk.In order to strengthen the abrasive action of hard alloy columnar, on end face 7 and grinding inclined-plane 4, also can spread weldering one deck carbide alloy fragment.

Welding-on has the footpath of guarantor hard alloy columnar 8 on the junk mill head outer diameter, has the effect of maintenance instrument centering; Also offer discharge trough 9 and plasma discharge hole 10 on junk mill body 1, the metal junk that grinds to form chip can be discharged with mud thus.

Because the part of the utility model end face has been processed into the inclined-plane, and the seting welding carbide post, increased effective grinding length of hard alloy columnar, prolonged service time; Owing to set up milling plane, had the milling effect in addition, so the utility model raises the efficiency 6～10 times than common junk mill, shortened greatly when putting driller, the milling effect is remarkable.

Claims

1, a kind of milling type shaft bottom junk mill, comprise junk mill body (1), it is characterized in that being fixed with on the junk mill body (1) cutting plate (2), be processed with the upright plane (3) that is parallel to the junk mill axis on junk mill body (1) and cutting plate (2), going up welding-on on upright plane (3) has carbide chip (5); The part of the end face (7) on upright plane (3) is processed into grinding inclined-plane (4), at end face (7) and grinding inclined-plane (4) last welding-on hard alloy columnar (6) is arranged.

2, milling type as claimed in claim 1 shaft bottom junk mill is characterized in that upright plane (3) can be processed into three to six.

3, milling type as claimed in claim 1 shaft bottom junk mill is characterized in that can spreading on grinding inclined-plane (4) and the end face (7) weldering carbide alloy fragment.