CN203035146U - Multi-stage variable milling taper repairing casing - Google Patents
Multi-stage variable milling taper repairing casing Download PDFInfo
- Publication number
- CN203035146U CN203035146U CN 201220605657 CN201220605657U CN203035146U CN 203035146 U CN203035146 U CN 203035146U CN 201220605657 CN201220605657 CN 201220605657 CN 201220605657 U CN201220605657 U CN 201220605657U CN 203035146 U CN203035146 U CN 203035146U
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- China
- Prior art keywords
- milling
- taper
- awl
- repairing
- diameter
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Abstract
The utility model relates to the technical field of oil filed well repair work, in particular to a multi-stage variable milling taper repairing a casing. A drilling joint, a large-diameter milling taper, a short drilling rod, a medium milling taper, a short drilling rod and an efficient milling taper of the multi-stage variable milling taper are sequentially connected from top to bottom. The outer diameter of the large-diameter milling taper is larger than that of the medium milling taper, the outer diameter of the medium milling taper is larger than that of the efficient milling taper, and the front end of the efficient milling taper is provided with a nozzle and a taper leading milling head. The multi-stage variable milling taper performs the functions of finishing repairing the casing and expanding the diameter of the multi-stage milling taper through once process column drilling, improves casing reducing repairing efficiency, reduces milling and expanding work processes, lowers labor intensity of workers, and overcomes the defects that milling tapers in different specifications need to be detached for many times in expanding repairing of the casing in the prior art, and repairing efficiency is low.
Description
Technical field:
The utility model relates to a kind of oil well repairing operation technical field, and particularly a kind of multistage variable is repaiied to overlap and milled awl.
Background technology:
At present, the oil field enters the exploitation middle and later periods, sleeve shrinking diameter distortion and damage are more common, the main tool of sleeve pipe hole enlargement reparation usefulness is to mill awl, need adopt the different awls that mill to repair hole enlargements according to different casing deformations and damaged condition during repairing casing, existingly mill the awl that mills that awl all is single-stage, repair the cover that different distortion and casing damaged well need repeatedly remove different specification and mill awl, cause operation repair the cover efficient low, have a strong impact on the overhaul progress.
The utility model content:
The technical problems to be solved in the utility model provides a kind of multistage variable and repaiies cover and mill awl, this device has realized that finishing the multistage awl that mills by the one-time process drill string repaiies cover hole enlargement function, improve sleeve shrinking diameter well remediation efficiency, reduce milling hole enlargement flow chart, reduce labor strength.Overcome the cover that existing sleeve pipe hole enlargement reparation need repeatedly remove different specification and milled awl, the deficiency that remediation efficiency is low.
Technical solution adopted in the utility model is: a kind of multistage variable repair the cover mill awl, comprise tool joint, major diameter mill the awl and short drill pipe; Tool joint, major diameter are milled awl, short drill pipe, middle rank and are milled awl, short drill pipe, efficiently mill awl and connect in turn from top to bottom, wherein the major diameter external diameter that mills awl mills the external diameter of awl greater than middle rank, middle rank mills the external diameter of awl greater than the external diameter that efficiently mills awl, and the front end that efficiently mills awl is equipped with nozzle and leading cone milling head.
The beneficial effects of the utility model are: the utility model is owing to adopted the multistage incorporated mode of awl of milling, thereby have by the one-time process drill string finish multistage mill the awl repair the cover hole enlargement function, improve sleeve shrinking diameter well remediation efficiency, reduce milling hole enlargement flow chart, reduce labor strength.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of multistage variable is repaiied cover and is milled awl, comprises that tool joint 1, major diameter mill awl 2 and short drill pipe 3; Tool joint 1, major diameter are milled awl 2, short drill pipe 3, middle rank and are milled awl 4, short drill pipe 3, efficiently mill awl 5 and connect in turn from top to bottom, wherein major diameter is milled awl 2 external diameter mills awl 4 greater than middle rank external diameter, middle rank mills the external diameter of awl 4 greater than the external diameter that efficiently mills awl 5, and the front end that efficiently mills awl 5 is equipped with nozzle 6 and leading cone milling head 7.
When using the utility model, by drilling rod with the utility model G.I.H, before the leading cone milling head 7 contact casing deformation well sections, turn on pump circulation workover fluid, rotary drill column simultaneously, efficiently mill the sleeve pipe of awl 5 and leading cone milling head 7 grinding deformations, introduce middle ranks through short drill pipe 3 again and mill awl 4, carry out intermediate milling hole enlargement and repair cover, after finishing the two-stage milling and repairing cover, introduce major diameter through short drill pipe 3 again and mill awl 2, finally finish milling and repair the cover expanding technology.
Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. a multistage variable is repaiied cover and is milled awl, comprises that tool joint (1), major diameter mill awl (2) and short drill pipe (3); It is characterized in that: tool joint (1), major diameter are milled awl (2), short drill pipe (3), middle rank and are milled awl (4), short drill pipe (3), efficiently mill awl (5) and connect in turn from top to bottom, wherein the major diameter external diameter that mills awl (2) mills the external diameter of awl (4) greater than middle rank, middle rank mills the external diameter of awl (4) greater than the external diameter that efficiently mills awl (5), and the front end that efficiently mills awl (5) is equipped with nozzle (6) and leading cone milling head (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605657 CN203035146U (en) | 2012-11-16 | 2012-11-16 | Multi-stage variable milling taper repairing casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220605657 CN203035146U (en) | 2012-11-16 | 2012-11-16 | Multi-stage variable milling taper repairing casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035146U true CN203035146U (en) | 2013-07-03 |
Family
ID=48687279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220605657 Expired - Fee Related CN203035146U (en) | 2012-11-16 | 2012-11-16 | Multi-stage variable milling taper repairing casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266149A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Well workover process utilizing well workover top drive |
| CN113266294A (en) * | 2021-07-06 | 2021-08-17 | 新疆华油油气工程有限公司 | Diameter-reducible anti-blocking milling cone and use method thereof |
-
2012
- 2012-11-16 CN CN 201220605657 patent/CN203035146U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266149A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Well workover process utilizing well workover top drive |
| CN113266294A (en) * | 2021-07-06 | 2021-08-17 | 新疆华油油气工程有限公司 | Diameter-reducible anti-blocking milling cone and use method thereof |
| CN113266294B (en) * | 2021-07-06 | 2023-02-17 | 新疆华油油气工程有限公司 | Diameter-reducible anti-sticking milling cone and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131116 |