CN108678697A - Repairing casing high-efficiency eccentric junk mill - Google Patents
Repairing casing high-efficiency eccentric junk mill Download PDFInfo
- Publication number
- CN108678697A CN108678697A CN201810485374.5A CN201810485374A CN108678697A CN 108678697 A CN108678697 A CN 108678697A CN 201810485374 A CN201810485374 A CN 201810485374A CN 108678697 A CN108678697 A CN 108678697A
- Authority
- CN
- China
- Prior art keywords
- junk mill
- ontology
- eccentric
- cutter tooth
- casing
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
Abstract
The present invention relates to a kind of repairing casing high-efficiency eccentric junk mills.The main eccentric class junk mill for solving the problems, such as prior art well workover and not being directed to big displacement activity broken well finishing fish head and deformed casing part.It is characterized in that：The ontology（1）Lower part end is taper guide shoe（4）；Ontology（1）Middle part is provided with step, and cutter tooth is covered on step（2）, the cutter tooth（2）Outside one layer of hard alloy particle is welded by solder flux（5）；Cutter tooth（2）Lower body（1）On be provided with several inclination hydrophthalmias（3）；The hydrophthalmia（3）With ontology（1）Internal upper part cavity unicom.The repairing casing high-efficiency eccentric junk mill can be realized and be modified to fish head, by impaired setting of casing shaping to just for the junk mill for big displacement activity broken well.
Description
Technical field
The present invention relates to a kind of workover tool in oilfield engineering technical field, especially a kind of repairing casing high-efficiency eccentric mill
Shoes.
Background technology
The survey found that the junk mill classification for all kinds of casing damaged wells is relatively more, such as various plain grindings, recessed mill and neck eye
Junk mill etc., but do not found also for the eccentric class junk mill of big displacement activity broken well finishing fish head and deformed casing part.It is existing
There is technology well workover using the construction method for beating lead stamp fish, reuses milling, shaping class tool carries out casing repairing, but has
Casing deformation amount it is larger, need the set mill class tool of multiple tripping in step by step, increase production timeliness.
Invention content
The technical problem to be solved by the present invention is to overcome prior art well workover present in background technology not for big
The problem of eccentric class junk mill of displacement activity broken well finishing fish head and deformed casing part, and it is efficient to provide a kind of repairing casing
Eccentric junk mill, the repairing casing high-efficiency eccentric junk mill can be realized and be repaiied to fish head for the junk mill for big displacement activity broken well
It is whole, by impaired setting of casing shaping to just.
The present invention solves the problems, such as that it can reach by following technical solution：The repairing casing high-efficiency eccentric junk mill, including
Main body, body lower part end are guide shoe；It is provided with step in the middle part of ontology, cutter tooth is covered on step, passes through solder flux outside the cutter tooth
Weld one layer of hard alloy particle；Several inclination hydrophthalmias are provided in cutter tooth lower body；The hydrophthalmia and ontology internal upper part chamber
Body unicom.
The present invention can have the advantages that compared with above-mentioned background technology：The repairing casing high-efficiency eccentric junk mill by
In using the above structure, it can be achieved that the finishing of underground fish top of fish, fish milling positioning, deformed casing milling etc., conveniently to falling
Fish is further salvaged, and construction period is shortened, and improves construction efficiency, milling significant effect.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of the present invention；
Attached drawing 2 is the sectional view of hard alloy particle circle in the middle part of Fig. 1 ontologies.
In figure：1- ontologies；2- cutters tooth；3- hydrophthalmias；4- guide shoes；5- hard alloy particles.
Specific implementation mode：
The invention will be further described below in conjunction with the accompanying drawings：
Attached drawing 1 combines shown in Fig. 2, the repairing casing high-efficiency eccentric junk mill, including ontology 1, and 1 lower part end of ontology is guide shoe 4, institute
It states guide shoe 4 and is designed as taper, enter fish head conducive to tool；1 middle part of ontology is provided with step, and cutter tooth 2, the cutter tooth are covered on step
One layer of hard alloy particle 5 is welded by solder flux outside 2；As shown in Fig. 2, the hard alloy particle 5 of 1 side of ontology compares the other side
2-4mm is thickeied, it is to form eccentric wear that side alloy, which thickeies purpose,；It is provided with 3-6 items in 2 lower body 1 of cutter tooth and tilts hydrophthalmia 3, tilts
Hydrophthalmia 3 and horizontal center line angle are 28 °, this angle benefit is to be conducive to rushing for eccentric milling casing clast and other sundries
It washes, in addition lateral opening hole, also ensures the intensity for drawing inclined portion point；The hydrophthalmia 3 and 1 internal upper part cavity unicom of ontology；It is described hard
Matter alloying pellet 5 is YG alloying pellets.
The repairing casing high-efficiency eccentric junk mill, guide shoe part are set to the lower end of ontology, and milling part is set to ontology
Middle part, milling part include hard alloy particle and cutter tooth.Hard alloy particle is studded on the outside of junk mill, alloy component is in work
The middle part of tool, side alloy thicken, and form eccentric wear, which is designed as taper, enters fish head conducive to tool.Well workover
When only need G.I.H to visit to add appropriate bit pressure milling, the junk mill that can modify fish head to top of fish, by impaired setting of casing shaping pair
Just, this tool is then reintroduced, the other tools of tripping in can complete broken well repair, this tool construction is simple, user
Just, it can be widely used among workover operation
Repairing casing high-efficiency eccentric junk mill of the present invention is, it can be achieved that the finishing of underground fish top of fish, fish milling positioning, deformed casing
Milling etc., it is convenient that fish is further salvaged, construction period is saved, construction efficiency, milling significant effect are improved.
Repairing casing high-efficiency eccentric junk mill is connected on to the bottom of operating tool string, the low bit pressure of G.I.H（Bit pressure 5-
10KN）Milling, other to carry out repairing fish construction according to conventional milling construction parameter, which has according to construction casing size difference
Different specifications.
Due to the tool have the function of receive fish, repair fish and repairing casing, big displacement activity broken well may be implemented and do not advise
Then top of fish and big section casing damaged well section are effectively modified, and repair fish and shaping is efficient, work well.
Claims (4)
1. a kind of repairing casing high-efficiency eccentric junk mill, including main body（1）, it is characterised in that：The ontology（1）Lower part end is cone
Shape guide shoe（4）；Ontology（1）Middle part is provided with step, and cutter tooth is covered on step（2）, the cutter tooth（2）One is welded by solder flux in outside
Layer hard alloy particle（5）；Cutter tooth（2）Lower body（1）On be provided with several inclination hydrophthalmias（3）；The hydrophthalmia（3）With ontology
（1）Internal upper part cavity unicom.
2. repairing casing high-efficiency eccentric junk mill according to claim 1, it is characterised in that：The hard alloy particle（5）
For YG hard alloy particles.
3. repairing casing high-efficiency eccentric junk mill according to claim 1, it is characterised in that：Tilt hydrophthalmia（3）With in level
Heart line angle degree is 28 °.
4. repairing casing high-efficiency eccentric junk mill according to claim 1, it is characterised in that：Tilt hydrophthalmia（3）For 3-6 items.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485374.5A CN108678697A (en) | 2018-05-21 | 2018-05-21 | Repairing casing high-efficiency eccentric junk mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485374.5A CN108678697A (en) | 2018-05-21 | 2018-05-21 | Repairing casing high-efficiency eccentric junk mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108678697A true CN108678697A (en) | 2018-10-19 |
Family
ID=63805215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485374.5A Pending CN108678697A (en) | 2018-05-21 | 2018-05-21 | Repairing casing high-efficiency eccentric junk mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678697A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898309A (en) * | 2020-06-22 | 2022-01-07 | 中海油能源发展股份有限公司 | Spiral wing collarband mill shoe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504515A (en) * | 1967-09-25 | 1970-04-07 | Daniel R Reardon | Pipe swedging tool |
| CN2718211Y (en) * | 2004-04-16 | 2005-08-17 | 辽河石油勘探局 | Reconditioning casing probe milling awl |
| CN201474641U (en) * | 2009-05-12 | 2010-05-19 | 崔朝轩 | Set of eccentric wash over pipe, milling shoe, mill pyramid and milling rod workover tools |
| CN201614906U (en) * | 2010-03-26 | 2010-10-27 | 中国石油集团川庆钻探工程有限公司长庆管具公司 | Support-type milling shoes |
| CN202266222U (en) * | 2011-10-10 | 2012-06-06 | 高瑞 | Self-centralizing casing shaping tool |
| CN204960851U (en) * | 2015-09-22 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司 | Eccentric junk mill of coiled tubing milling |
| CN205422609U (en) * | 2016-04-06 | 2016-08-03 | 中国石油天然气股份有限公司 | Special high -efficient junk mill of tooth that inclines out |
| CN205503070U (en) * | 2016-04-20 | 2016-08-24 | 中国石油天然气股份有限公司 | Maintain first special high -efficient junk mill of fish |
-
2018
- 2018-05-21 CN CN201810485374.5A patent/CN108678697A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504515A (en) * | 1967-09-25 | 1970-04-07 | Daniel R Reardon | Pipe swedging tool |
| CN2718211Y (en) * | 2004-04-16 | 2005-08-17 | 辽河石油勘探局 | Reconditioning casing probe milling awl |
| CN201474641U (en) * | 2009-05-12 | 2010-05-19 | 崔朝轩 | Set of eccentric wash over pipe, milling shoe, mill pyramid and milling rod workover tools |
| CN201614906U (en) * | 2010-03-26 | 2010-10-27 | 中国石油集团川庆钻探工程有限公司长庆管具公司 | Support-type milling shoes |
| CN202266222U (en) * | 2011-10-10 | 2012-06-06 | 高瑞 | Self-centralizing casing shaping tool |
| CN204960851U (en) * | 2015-09-22 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司 | Eccentric junk mill of coiled tubing milling |
| CN205422609U (en) * | 2016-04-06 | 2016-08-03 | 中国石油天然气股份有限公司 | Special high -efficient junk mill of tooth that inclines out |
| CN205503070U (en) * | 2016-04-20 | 2016-08-24 | 中国石油天然气股份有限公司 | Maintain first special high -efficient junk mill of fish |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898309A (en) * | 2020-06-22 | 2022-01-07 | 中海油能源发展股份有限公司 | Spiral wing collarband mill shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181019 |
|
| WD01 | Invention patent application deemed withdrawn after publication |