CN2720097Y - Composite bushing milling jacket for finishing casing pipe - Google Patents
Composite bushing milling jacket for finishing casing pipe Download PDFInfo
- Publication number
- CN2720097Y CN2720097Y CN 200420031228 CN200420031228U CN2720097Y CN 2720097 Y CN2720097 Y CN 2720097Y CN 200420031228 CN200420031228 CN 200420031228 CN 200420031228 U CN200420031228 U CN 200420031228U CN 2720097 Y CN2720097 Y CN 2720097Y
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- CN
- China
- Prior art keywords
- well
- sleeve tube
- utility
- model
- milling
- 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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Abstract
The utility model relates to a composite bushing milling jacket for finishing casing pipes which belongs to the tool class of well repairing operation under the well of the oil field. The sleeve tube is seriously damaged, because the thick oil injecting steam well is increased. The traditional sleeve tube repairing method adopts a casing roller and a milling cone tool which have poor effect and often get out of the sleeve to result in the well repairing accident. The damaged sleeve tube well section with small diameter can not be repaired. The utility model adopts the structure that a grinding shoe with a concave bottom and a milling head are arranged under the upper joint for the purpose. The composite bushing milling jacket for finishing casing pipes can be used in the damaged sleeve tube with small diameter. The tool is used with a rolling centralizer and a drill-pressing controller to expand the diameter of the well with the seriously damaged sleeve tube. The operation channel is gotten through and the tool can not be deviated from the damaged sleeve tube well section. The utility model has the advantages of simple structure and easy construction, and the utility model can be widely used for repairing the sleeve tube in the well.
Description
Technical field:
The utility model relates to a kind of compound casing section mill that is used for the sleeve pipe trimming, belongs to down-hole, oil field workover treatment instrument class.
Background technology:
Increase along with heavy oil wells steam exploitation round, sleeve pipe damages phenomenon and is on the rise, cause very big loss for the oil field exploration and development, traditional in the past well workover is only milled the awl instrument by tube expander or employing, have cover easily and cause the well workover accident, aggravated the sleeve pipe damage, in addition, above-mentioned instrument is also very difficult for the hole enlargement of casing failure well section and the operation of little latus rectum.
The utility model content:
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and a kind of compound casing section mill that is used for the sleeve pipe trimming that provides, can be used for the hole enlargement of little latus rectum casing failure well section, repair, also can get through into cased operation path, if with rolling centralizer, the pressure of the drill controller combination, use, can realize milling and regulation the casing failure well section.
The utility model implementation is:
It is made up of by the cylindrical shell of screwed connection top connection, and described top connection bottom position is welded with recessed junk mill, and is simplified, lower end welding one cover milling head.
The hydrophthalmia that evenly is drilled with three diameters on the circumference of described concave bottom junk mill bottom surface and is 27 millimeters communicates with top connection inner cavity chamber; But described cover milling head with rely on the Lip river according to the alloy electrode built-up welding on the cylindrical shell bottom surface, concave bottom junk mill bottom surface is recessed lonely shape, but and forms with support Lip river alloy electrode built-up welding.
Described cylindrical shell external diameter is 114 millimeters of Φ, 90 millimeters of internal diameter Φ.
The utility model is compared with existing technology, has distinguishing feature:
Because the utility model has adopted the cover milling head in the concave bottom junk mill of top connection bottom welding and the welding of urceolus bottom, during use, only need instrument G.I.H casing failure well section, earlier cover being decreased mouthful many sections of jurisdiction of end wears away, then grind with the cover milling head again, it is convenient especially to construct, in addition because this tool diameter is less, therefore, hole enlargement for the casing damaged well section of little latus rectum, it is particularly useful to get through operation path, and this instrument does not depart from the well section of sleeve pipe damage and therefore can avoid sleeve pipe to grind inclined to one side accident generation again in the milling process.
Description of drawings:
Figure is the utility model structural representation.
Among the figure by cover milling head 1,, 2, top connection, 3, the concave bottom junk mill, 4, cylindrical shell, 5, hydrophthalmia forms.
The specific embodiment:
The utility model is provided by following examples.
Below in conjunction with accompanying drawing the utility model is illustrated.
Among the figure, top connection 2 is 2
7/
8The pipe of inch drilling rod box is welding concave bottom junk mill 3 around its inwall perforation, bottom tube wall, and the top connection medium position has pin thread and is connected with cylindrical shell 4.
But cover milling head 1 is to form according to the built-up welding of alloy electrode material with the support Lip river in the bottom surface of cylindrical shell 4.
But concave bottom junk mill 3 is 27 millimeters hydrophthalmia 5 in top connection 2 bottoms with relying on Lip river alloy electrode material to be welded, be uniform-distribution with three diameters on the circumference bottom surface.
Described cylindrical shell external diameter is 114 millimeters of Φ, 90 millimeters of internal diameter Φ.
The utility model working method is:
This instrument is lowered into cover damage position in the well, gets through well section and hole enlargement, circulating mud grinds the casing failure well section then, unnecessary sleeve pipe residue sheet is washed, then, continue to creep into, continue the sleeve pipe that damages is carried out milling by cover milling head 1, so far, finish the utility model task.
Claims (3)
1, a kind of compound casing section mill that is used for the sleeve pipe trimming is made up of by the cylindrical shell (4) of screwed connection top connection (2), and it is characterized in that: described top connection (2) bottom position is welded with recessed junk mill (3), and cylindrical shell (4) lower end is welded with a cover milling head (1).
2, a kind of compound casing section mill that is used for the sleeve pipe trimming according to claim 1, it is characterized in that: the hydrophthalmia (5) that is uniform-distribution with three diameters on described concave bottom junk mill (3) the circumference bottom surface and is 27 millimeters communicates with top connection inner cavity chamber, cover milling head (1) but be with rely on the Lip river according to the built-up welding of alloy material welding rod on cylindrical shell (4) bottom surface, concave bottom junk mill (3) but the bottom surface be recessed lonely shape and form according to the built-up welding of alloy material welding rod with the support Lip river.
3, a kind of compound casing section mill that is used for the sleeve pipe trimming according to claim 1, it is characterized in that: cylindrical shell (4) external diameter is 114 millimeters of Φ, 90 millimeters of internal diameter Φ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031228 CN2720097Y (en) | 2004-04-16 | 2004-04-16 | Composite bushing milling jacket for finishing casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031228 CN2720097Y (en) | 2004-04-16 | 2004-04-16 | Composite bushing milling jacket for finishing casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2720097Y true CN2720097Y (en) | 2005-08-24 |
Family
ID=35009058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031228 Expired - Fee Related CN2720097Y (en) | 2004-04-16 | 2004-04-16 | Composite bushing milling jacket for finishing casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2720097Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632115A (en) * | 2015-01-30 | 2015-05-20 | 中石化石油工程技术服务有限公司 | Composite milling shoe for tubular fish |
| CN106761515A (en) * | 2017-02-19 | 2017-05-31 | 胜利油田胜兴集团有限责任公司 | A kind of superficial part set leakage external reinforcement repaiies set technique |
-
2004
- 2004-04-16 CN CN 200420031228 patent/CN2720097Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632115A (en) * | 2015-01-30 | 2015-05-20 | 中石化石油工程技术服务有限公司 | Composite milling shoe for tubular fish |
| CN106761515A (en) * | 2017-02-19 | 2017-05-31 | 胜利油田胜兴集团有限责任公司 | A kind of superficial part set leakage external reinforcement repaiies set technique |
| CN106761515B (en) * | 2017-02-19 | 2021-06-29 | 胜利油田胜兴集团有限责任公司 | Shallow sleeve leakage reinforcing and repairing process |
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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 |