CN201027515Y - Returnable milling fisher - Google Patents
Returnable milling fisher Download PDFInfo
- Publication number
- CN201027515Y CN201027515Y CNU2007202003283U CN200720200328U CN201027515Y CN 201027515 Y CN201027515 Y CN 201027515Y CN U2007202003283 U CNU2007202003283 U CN U2007202003283U CN 200720200328 U CN200720200328 U CN 200720200328U CN 201027515 Y CN201027515 Y CN 201027515Y
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- China
- Prior art keywords
- casing section
- section mill
- chamber
- milling
- fishing
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- 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 - Lifetime
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Abstract
The utility model provides a reclaimable milling jar knocker which relates to the tool for salvaging fallen objects in an oil well in the oil well repairing operation, comprising an upper contact, a casing section mill, a casing milling shoe and a salvaging split, wherein, the upper end of the casing section mill is connected with the lower end of the upper contact, the lower end of the casing section mill is connected with the upper end of the casing milling shoe, the inner chambers of the upper contact, the casing section mill and the casing milling shoe are communicated with each other, the inner chamber of the casing section mill comprises a top chamber and a lower chamber, the inner side of the casing section mill is provided with the top chamber, the lower part of the top chamber is the lower chamber, a conical surface is arranged between the top chamber and the lower chamber of the casing section mill, the conical surface has a bigger upper part and a smaller lower part, the top chamber of the casing section mill is inside provided with the salvaging split capable of moving in the top chamber up and down, and the inner side of the upper part of the salvaging split is provided with a thread. With compact and reasonable structure and convenient use, the utility model can not only salvage the fallen objects in the oil well for only one time but also can prevent sticking accidents from happening, which greatly improves work efficiency and security of salvaging operation.
Description
One, technical field
The utility model relates to the instrument of salvaging junk in the oil well in the workover rig service to oil well, is a kind of reversible milling fishing tool.
Two, background technology
Often need maybe can bore packer and carry out milling operation boring bridging plug in oil well repairing operation, be after can boring bridging plug and maybe can boring packer slip and partly grind off, to shift residual body onto artificial bottom of a well in the past.And the raising that requires along with workover treatment, domestic most of oil field requires the residual bodies such as bridging plug after the milling are pulled out, is beneficial to subsequent job.The mode of finishing above-mentioned milling, salvaging at present has two kinds, and a kind of is that next time fishing tool is salvaged again after being lowered to milling tool bridging plug being ground off, this kind mode safety, but time-consuming; Another kind is to be lowered to the milling fishing tool one time, in milling, salvage, but this milling fishing tool can not move back, in case can bore before slips that bridging plug maybe can bore packer do not fall by milling, can not continue milling because of the junk mill damage appears in fortuitous event, instrument will occur and carry to come out the lock of tool drilling that fails to lay down.
Three, summary of the invention
The utility model provides a kind of reversible milling fishing tool, has overcome the deficiency of above-mentioned prior art, can easily salvage junk.
The technical solution of the utility model realizes by following measure: a kind of reversible milling fishing tool comprises top connection, casing section mill, cover milling-grinding shoe and fishing slip; The upper end of casing section mill and the lower end of top connection link together, the lower end of casing section mill links together with the upper end of cover milling-grinding shoe, the inner chamber of top connection, casing section mill and cover milling-grinding shoe communicates, the inner chamber of casing section mill comprises chamber, top and cavity of resorption, the casing section mill upper inner has the chamber, top, below the chamber, top is cavity of resorption, between the chamber, top of casing section mill and the cavity of resorption conical surface is arranged, this conical surface is up big and down small, the fishing slip that can move up and down in the chamber, top is arranged in the chamber, top of casing section mill, in the fishing slip upper inner screw thread is arranged, fishing slip is in conical surface position and can be pushed by the conical surface.
Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:
Can there be protruding key in the outside of above-mentioned fishing slip, on the conical surface of casing section mill, have can with the corresponding keyway of protruding key.
But the screw thread left hand thread in the above-mentioned fishing slip.
The upper end of above-mentioned casing section mill can link together by the lower end of screw thread and top connection, and the lower end of casing section mill links together by the upper end of screw thread with the cover milling-grinding shoe.
The utility model reasonable and compact in structure, easy to use, can not only once will come on the fishing junk in the well, and lock of tool drilling can not take place, improved operating efficiency greatly, also improved the safety of fishing.
Four, description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment when salvaging;
Coding in the accompanying drawing is respectively: 1 is top connection, and 2 is fishing slip, and 3 is protruding key, and 4 is keyway, and 5 is casing section mill, and 6 are the cover milling-grinding shoe.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this reversible milling fishing tool comprises top connection 1, casing section mill 5, cover milling-grinding shoe 6 and fishing slip 2; The lower end of the upper end of casing section mill 5 and top connection 1 links together, the lower end of casing section mill 5 links together with the upper end of cover milling-grinding shoe 6, top connection 1, the inner chamber of casing section mill 5 and cover milling-grinding shoe 6 communicates, the inner chamber of casing section mill 5 comprises chamber, top and cavity of resorption, casing section mill 5 upper inner have the chamber, top, below the chamber, top is cavity of resorption, between the chamber, top of casing section mill 5 and the cavity of resorption conical surface is arranged, this conical surface is up big and down small, the fishing slip 2 that can move up and down in the chamber, top is arranged in the chamber, top of casing section mill 5, in fishing slip 2 upper inner screw thread is arranged, fishing slip 2 is in conical surface position and can be pushed by the conical surface.
Can according to actual needs above-mentioned reversible milling fishing tool be made further optimization and/or improvements:
As shown in Figure 1, there is protruding key 3 in the outside of fishing slip 2, on the conical surface of casing section mill 5, have can with protruding key 3 corresponding keyways 4.
As shown in Figure 1, but the screw thread left hand thread in the fishing slip 2.
As shown in Figure 1, the upper end of casing section mill 5 can link together by screw thread and top connection 1, and the lower end of casing section mill 5 links together by screw thread and cover milling-grinding shoe 6.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The concrete course of work of the utility model most preferred embodiment is as follows:
As shown in Figure 1, when the milling fishing, cover milling-grinding shoe 6 at first can bore bridging plug and maybe can bore the outside milling of packer and fall, can bore bridging plug and maybe can bore the packer central tube and progress in the casing section mill 5 this moment, intensification along with the milling progress, can bore bridging plug and maybe can bore the packer central tube and be pressed into gradually in the fishing slip 2, by left hand thread thread making lockings in the fishing slip 2.After milling finishes, when proposition can be bored bridging plug and maybe can be bored the packer central tube, because the effect of gravity, fishing slip 2 and can bore bridging plug and maybe can bore the packer central tube conical surface descending and that cooperate with casing section mill 5 and can produce one and radially hold power tightly, thereby make fishing slip 2 clampings can bore bridging plug and maybe can bore the packer central tube, propose pit shaft smoothly.
As shown in Figure 2, when the milling fishing, can bore bridging plug maybe can bore the packer central tube and be pressed in the fishing slip 2, can not continue milling because of the fortuitous event junk mill this moment, maybe can bore packer slip and do not fallen and can bore bridging plug by milling, may cause tubing string can not on put forward the bit freezing situation that can not transfer, at this moment but the upper lifting pipe post moves downward on the conical surface that drops down onto casing section mill 5 fishing slip 2, tubing string simultaneously turns clockwise, protruding key 3 on the fishing slip 2 will be stuck in the keyway 4 on casing section mill 5 conical surfaces, because fishing slip 2 inside are left hand thread, therefore the tubing string that turns clockwise will maybe can bore the packer central tube and withdraws from boring bridging plug, thereby makes milling tool and can bore bridging plug and maybe can bore the packer central tube and separate.At this moment just the milling fishing tool can be proposed.
Claims (5)
1. a reversible milling fishing tool is characterized in that comprising top connection, casing section mill, cover milling-grinding shoe and fishing slip; The upper end of casing section mill and the lower end of top connection link together, the lower end of casing section mill links together with the upper end of cover milling-grinding shoe, the inner chamber of top connection, casing section mill and cover milling-grinding shoe communicates, the inner chamber of casing section mill comprises chamber, top and cavity of resorption, the casing section mill upper inner has the chamber, top, below the chamber, top is cavity of resorption, between the chamber, top of casing section mill and the cavity of resorption conical surface is arranged, this conical surface is up big and down small, the fishing slip that can move up and down in the chamber, top is arranged in the chamber, top of casing section mill, in the fishing slip upper inner screw thread is arranged, fishing slip is in conical surface position and can be pushed by the conical surface.
2. reversible milling fishing tool according to claim 1 is characterized in that there is protruding key in the outside of fishing slip, on the conical surface of casing section mill, have can with the corresponding keyway of protruding key.
3. reversible milling fishing tool according to claim 1 and 2, the screw thread that it is characterized in that fishing slip is a left hand thread.
4. reversible milling fishing tool according to claim 1 and 2, the upper end that it is characterized in that casing section mill links together by the lower end of screw thread and top connection, and the lower end of casing section mill links together by the upper end of screw thread with the cover milling-grinding shoe.
5. reversible milling fishing tool according to claim 3, the upper end that it is characterized in that casing section mill links together by the lower end of screw thread and top connection, and the lower end of casing section mill links together by the upper end of screw thread with the cover milling-grinding shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202003283U CN201027515Y (en) | 2007-05-08 | 2007-05-08 | Returnable milling fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202003283U CN201027515Y (en) | 2007-05-08 | 2007-05-08 | Returnable milling fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201027515Y true CN201027515Y (en) | 2008-02-27 |
Family
ID=39131719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202003283U Expired - Lifetime CN201027515Y (en) | 2007-05-08 | 2007-05-08 | Returnable milling fisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201027515Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899956A (en) * | 2010-03-17 | 2010-12-01 | 北京华油油气技术开发有限公司 | Method for salvaging electric pump pipe column fish |
| 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 |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
-
2007
- 2007-05-08 CN CNU2007202003283U patent/CN201027515Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899956A (en) * | 2010-03-17 | 2010-12-01 | 北京华油油气技术开发有限公司 | Method for salvaging electric pump pipe column fish |
| CN101899956B (en) * | 2010-03-17 | 2013-02-27 | 北京华油油气技术开发有限公司 | Method for salvaging electric pump pipe column fish |
| 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 |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: KARAMAY HONGDU LLC Assignor: Xinjiang Oil Field Co oil production technology research institute Contract record no.: 2011650000004 Denomination of utility model: Returnable milling fisher Granted publication date: 20080227 License type: Exclusive License Record date: 20110309 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |