CN205422609U - Special high -efficient junk mill of tooth that inclines out - Google Patents
Special high -efficient junk mill of tooth that inclines out Download PDFInfo
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- CN205422609U CN205422609U CN201620276236.2U CN201620276236U CN205422609U CN 205422609 U CN205422609 U CN 205422609U CN 201620276236 U CN201620276236 U CN 201620276236U CN 205422609 U CN205422609 U CN 205422609U
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- junk mill
- tooth
- milling
- fish
- blind hole
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Abstract
The utility model provides a special high -efficient junk mill of tooth that inclines out. The main problem that has the junk mill now and can not satisfy the active bad break well fracture repairment top of fish needs of big displacement of solving. Its characterized in that: the axial is gone up in body (1) has the bench blind hole, threaded in the bench blind hole upper portion, and body (1) outside, inside wall and bottom all stud with carbide tooth (2), and body (1) lower extreme outside axial is fluted, and recess axial edge has blade area (3), and body (1) lower extreme has 3 hydrophthalmias. This special high -efficient junk mill of tooth that inclines out has the preliminary repairment of irregular fish head to in the inside flat milling inside edge face of an income section of thick bamboo, eliminate the milling blind area, and effective protective case's characteristics.
Description
Technical field
This utility model relates to a kind of oilfield engineering field workover tool, and especially side goes out tooth special efficient junk mill.
Background technology
In oil well field, need to use junk mill well workover.And existing junk mill can not meet the problem of big displacement activity broken well fracture finishing top of fish needs owing to reasons in structure exists, and then affect well workover efficiency and cost.
Summary of the invention
In order to solve the problem that existing junk mill can not meet big displacement activity broken well fracture finishing top of fish needs.This utility model provides a kind of side to go out tooth special efficient junk mill.This side goes out tooth special efficient junk mill to be had and tentatively repairs irregular fish head, and takes in the internal flat milling of cylinder in blade surface, eliminates milling blind area, and effectively protects the feature of sleeve pipe.
The technical solution of the utility model is: this side goes out tooth special efficient junk mill and includes body.Axially having stage blind hole on body, have screw thread, outer body, medial wall and bottom all to stud with hard-metal insert in stage blind hole top, body lower end outside is axially fluted, and groove axial edge has blade strip, body lower end to have 3 hydrophthalmias.
This utility model has the advantages that this side goes out tooth special efficient junk mill and axially has stage blind hole owing to using on body, stage blind hole has screw thread in top, outer body, medial wall and bottom all stud with hard-metal insert, body lower end outside is axially fluted, groove axial edge has blade strip, body lower end to have the structure of 3 hydrophthalmias.Side edge recessed mill structure in utilization; irregular fish head is tentatively repaired by outer milling blade surface; and take in the internal flat milling of cylinder in blade surface; eliminate milling blind area; by blade surface in the internal milling of cylinder finally by fish head finishing rule; meet big displacement activity broken well fracture finishing top of fish needs, and effectively protect sleeve pipe.This side goes out tooth special efficient junk mill and has and tentatively repair irregular fish head thus, and takes in the internal flat milling of cylinder in blade surface, eliminates milling blind area, and effectively protects the feature of sleeve pipe.
Accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model；
Accompanying drawing 2 is Fig. 1 upward view.
1-body in figure, 2-hard-metal insert, 3-blade strip.
Detailed description of the invention:
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, this side goes out tooth special efficient junk mill and includes body 1.Axially having stage blind hole on body 1, have screw thread in stage blind hole top, outside body 1, medial wall and bottom all stud with hard-metal insert 2, and body 1 lower end outside is axially fluted, and groove axial edge has blade strip 3, body 1 lower end to have 3 hydrophthalmias.
This side goes out tooth special efficient junk mill and have employed all-in-one-piece recessed junk mill structure, this structure is provided with three hydrophthalmias, milling operation in the case of huge discharge can be realized, outside junk mill, medial wall and bottom all stud with hard-metal insert, and there are six blade strips 3 inside, only need G.I.H to visit top of fish during well workover and add appropriate the pressure of the drill milling, fish head just can be repaired by junk mill, impaired setting of casing shaping is aligned, then reintroduces this instrument, under enter other instrument and just can complete broken well repair, this tool construction is simple, easy to use, can be widely used among workover operation.
This side goes out tooth special efficient junk mill and repaiies fish specific purpose tool for activity broken well; which overcome the inadaptability of conventional well fish head dressing tool; enter under having smoothly, protect sleeve pipe, repair fish construction stability, repair that fish is effective, efficiency high; having the effect receiving fish guarantor fish, much the most irregular top of fish can realize repairing completely.This instrument milling sword tooth is made up of high strength wear resistant material, can realize efficient milling and repair fish under low the pressure of the drill.
This side going out tooth special efficient junk mill and is connected on the bottom of operating tool string, the low the pressure of the drill of G.I.H (the pressure of the drill 5 10KN) milling, other carries out repairing fish construction according to conventional milling construction parameter, and this instrument has different specifications according to construction casing size difference.Having receipts fish repair fish effect owing to this side goes out tooth special efficient junk mill, it is possible to achieve the big displacement irregular top of fish of activity broken well is effectively repaired, it is high to repair fish efficiency, repaiies rear top of fish regular shape.
This side goes out tooth special efficient junk mill in the test application of Fructus Pruni 8-11-618 well.Playing Tubing During Running chucking power 16t, cutting fracture top oil pipe, residue oil pipe does spike and carries out overlapping milling, rear under enter this side and go out tooth special efficient junk mill, milling drilling depth 0.6m, rear lower nib looks for passage to find, and total data and test effect are normal.
This side goes out tooth special efficient junk mill in the test application of big 78-86 well.Play Tubing During Running chucking power 12.5t, cutting fracture top oil pipe, residue oil pipe does spike to carry out overlapping milling, finishing fish head this side special is utilized to go out tooth special efficient junk mill milling fracture, afterwards by packing implantation tool completion of giving up, setting in test and suppress 3.5Mpa, pressure 10Mpa opened by circulation canal, and give up pulling force 21t.
Claims (1)
1. a side goes out tooth special efficient junk mill, including body (1), it is characterized in that: body axially has stage blind hole on (1), stage blind hole has screw thread in top, outside body (1), medial wall and bottom all stud with hard-metal insert (2), and body (1) lower end outside is axially fluted, groove axial edge has blade strip (3), body (1) lower end to have 3 hydrophthalmias.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276236.2U CN205422609U (en) | 2016-04-06 | 2016-04-06 | Special high -efficient junk mill of tooth that inclines out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276236.2U CN205422609U (en) | 2016-04-06 | 2016-04-06 | Special high -efficient junk mill of tooth that inclines out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205422609U true CN205422609U (en) | 2016-08-03 |
Family
ID=56522506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620276236.2U Active CN205422609U (en) | 2016-04-06 | 2016-04-06 | Special high -efficient junk mill of tooth that inclines out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205422609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678697A (en) * | 2018-05-21 | 2018-10-19 | 中国石油天然气股份有限公司 | Repairing casing high-efficiency eccentric junk mill |
-
2016
- 2016-04-06 CN CN201620276236.2U patent/CN205422609U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678697A (en) * | 2018-05-21 | 2018-10-19 | 中国石油天然气股份有限公司 | Repairing casing high-efficiency eccentric junk mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |