CN204591199U - A kind of drilling tool fishing tool - Google Patents
A kind of drilling tool fishing tool Download PDFInfo
- Publication number
- CN204591199U CN204591199U CN201520176402.7U CN201520176402U CN204591199U CN 204591199 U CN204591199 U CN 204591199U CN 201520176402 U CN201520176402 U CN 201520176402U CN 204591199 U CN204591199 U CN 204591199U
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- CN
- China
- Prior art keywords
- female coupling
- drilling tool
- slips
- coupling tap
- drilling
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of drilling tool fishing tool, comprise body, body upper part is provided with box cupling, and body lower part has been threaded connection milling cylinder, and milling cylinder bottom is provided with mill teeth, and body interior is provided with keyway, also comprises female coupling tap, is provided with slips below female coupling tap.A kind of drilling tool fishing tool of the utility model, not only can realize the disposable salvaging that Jing Zuanganduanliekou becomes irregular accident, and for the situation of drilling rod breakdown point comparison rule, salvages better effects if.By the size of adjusting device external diameter, female coupling tap and bottom slips, the salvaging of the drilling tool to different size specification, tubing string and oil pipe can be realized.
Description
Technical field
The utility model belongs to oilfield drilling device technique field, relates to a kind of drilling tool fishing tool.
Background technology
Drilling rod is one of most important drilling tool in wellbore construction.Because horizontal well, directional well, Deep Drilling Techniques are increasingly extensive, and operating mode differs, and execution conditions are complicated and changeable, in wellbore construction drilling rod three dimensions bear complicated alternation pressure, draw, turn round, bend, the various load such as vibrations.Add the effects such as the wearing and tearing of use procedure, corrosion, after certain timeliness namely stress concentrate or weak link position destroy, cause drilling rod thread off or fracture accident generation.After drilling rod is disconnected de-, must salvages by using Special fishing tool, pulling the residue drilling tool in pit shaft out, to reduce economic loss, carrying out smoothly of guarantee subsequent well operation.
But, drilling rod destroys has very high uncertainty, failure position, failure mode are difficult to hold, especially when drilling rod is after main body destruction, breakdown point often tears shape in irregular, and the conventional device such as die nipple, female coupling tap, fishing socket cannot catch fish head, and flat-bottom grind shoes or similar means can only be adopted first to carry out fish head dressing operation, then adopt the instrument such as die nipple, female coupling tap to carry out thread making, salvage.The drawback of this traditional work mode is fairly obvious.First conventional salvaging mode is when using common junk mill finishing fish head, often in milling process, due to the scrambling of fish head and fish drillability too low, drill bit very easily enters stratum and opens up the well that makes new advances, not only effectively cannot repair fish, get out second well on the contrary in the wellbore, cause down-hole complicated, make fishing failure.Secondly, even if the fish head that completes that can be desirable is repaired and thread making operation, salvage lower drilling tool, but because needs repeatedly carry out milling, thread making operation, make conventional salvaging engineering time length, waste time and energy, and fish long soaking time, be very easy to cause the second accidents such as shaft bottom caves in, sticky card, aggravation fishing difficulty.
Utility model content
The purpose of this utility model is to provide a kind of drilling tool fishing tool, solves wasting time and energy and the problem of the sticky card accident of easy aggravation of existing fishing tool existence.
The technical scheme that the utility model adopts is: a kind of drilling tool fishing tool, and comprise body, body upper part is provided with box cupling, body lower part has been threaded connection milling cylinder, and milling cylinder bottom is provided with mill teeth, and body interior is provided with keyway, also comprise female coupling tap, below female coupling tap, be provided with slips.
Feature of the present utility model is also:
Female coupling tap is fixed on the inside cavity of body by keyway.
Slips is fixed in milling cylinder by position-limitting pin.
Female coupling tap is annular.
It is zigzag inside slips.
Mill teeth is horn-like.
Slips is combined by flexible chain by slips sheet.
The beneficial effects of the utility model are: a kind of drilling tool fishing tool of the utility model, can realize the disposable salvaging that drill rod breaking mouth becomes irregular destruction.After instrument enters well with fishing string, under fishing string self gravitation and the effect of well head TORQ, realized the dressing operation of irregular fish head by milling shoe, by the cooperation of female coupling tap, slips, realize the disposable salvaging of well casing post.In addition, because drilling rod main body destruction causes carrying drilling tool be hampered because sticky card or shaft bottom cave in often, on-the-spot tensile overload, destroy and cause.After using this device to firmly grasp fish, the circulation canal of drilling tool and annular space can be set up, be soaked by circulation of drilling fluid unfreezing or decoder, coordinate jarring releasing instrument, greatly can improve the salvaging chance of success of fish.Finally, by the milling cylinder of modifier, female coupling tap, slips and outside dimension, the successful salvaging of the shaft bottom fish such as such as sleeve pipe, oil pipe, specific dimensions drill collar can also be realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of drilling tool fishing tool of the utility model;
Fig. 2 is the structural representation of slips in a kind of drilling tool fishing tool of the utility model.
In figure, 1. go up box cupling, 2. body, 3. female coupling tap, 4. keyway, 5. slips, 5-1. flexible chain, 5-2. slips sheet, 6. position-limitting pin, 7. milling cylinder, 8. mill teeth.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
A kind of drilling tool fishing tool, as shown in Figure 1.Comprise body 2, body 2 top is provided with box cupling 1, and body 2 bottom has been threaded connection milling cylinder 7, and milling cylinder 7 bottom is provided with mill teeth 8, body 2 inside is provided with keyway 4, also comprise female coupling tap 3, be provided with slips 5 below female coupling tap 3, described female coupling tap 3 is fixed on the inside cavity of body 2 by keyway 4, slips 5 is fixed in milling cylinder 7 by position-limitting pin 6, female coupling tap 3 is annular, and be zigzag inside slips 5, mill teeth 8 is horn-like.
As shown in Figure 2, slips 5 is combined by flexible chain 5-1 by slips sheet 5-2.
During use, after instrument enters well with fishing string, under fishing string self gravitation and the effect of well head TORQ, by the milling effect of mill teeth 8, finishing fish head, the fish head after finishing, by the guide function of milling cylinder 7, enters in body 2 thereupon.Then continue to transfer salvaging drilling tool, female coupling tap 3 contacts fish head, drives rotating disk and transfers salvaging drilling tool gradually, starting to carry out thread making operation.When female coupling tap 3 thread making is complete, after female coupling tap 3 firmly grasps fish, stall dish, upper body drill string, body 2 is up, and female coupling tap 3 has been connected closely with fish by the button made, female coupling tap 3 is motionless with fish, slips 5 extrudes by female coupling tap, cuts off position-limitting pin 6, and slips 5 opposing body 2 is descending and coordinate locking fish with milling cylinder 7 inner wedge cavity.Continue upper body drill string, fish is dual fastening by female coupling tap 3 and slips 5, and up with fishing string, until whole fish is tripped out pit shaft, fishing terminates.
A kind of drilling tool fishing tool of the utility model, can realize the disposable salvaging that drill rod breaking mouth becomes irregular destruction.After instrument enters well with fishing string, under fishing string self gravitation and the effect of well head TORQ, realized the dressing operation of irregular fish head by milling shoe, by the cooperation of female coupling tap, slips, realize the disposable salvaging of well casing post.In addition, because drilling rod main body destruction causes carrying drilling tool be hampered because sticky card or shaft bottom cave in often, on-the-spot tensile overload, destroy and cause.After using this device to firmly grasp fish, the circulation canal of drilling tool and annular space can be set up, be soaked by circulation of drilling fluid unfreezing or decoder, coordinate jarring releasing instrument, greatly can improve the salvaging chance of success of fish.
Claims (7)
1. a drilling tool fishing tool, it is characterized in that, comprise body (2), body (2) top is provided with box cupling (1), body (2) bottom has been threaded connection milling cylinder (7), milling cylinder (7) bottom is provided with mill teeth (8), body (2) inside is provided with keyway (4), also comprise female coupling tap (3), described female coupling tap (3) below is provided with slips (5).
2. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described female coupling tap (3) is fixed on the inside cavity of body (2) by keyway (4).
3. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described slips (5) is fixed in milling cylinder (7) by position-limitting pin (6).
4. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described female coupling tap (3) is annular.
5. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described slips (5) inner side is zigzag.
6. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described mill teeth (8) is for horn-like.
7. a kind of drilling tool fishing tool according to claim 1, is characterized in that, described slips (5) is combined by flexible chain (5-1) by slips sheet (5-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176402.7U CN204591199U (en) | 2015-03-26 | 2015-03-26 | A kind of drilling tool fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520176402.7U CN204591199U (en) | 2015-03-26 | 2015-03-26 | A kind of drilling tool fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591199U true CN204591199U (en) | 2015-08-26 |
Family
ID=53927364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520176402.7U Expired - Fee Related CN204591199U (en) | 2015-03-26 | 2015-03-26 | A kind of drilling tool fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062702A (en) * | 2021-03-08 | 2021-07-02 | 山东省煤田地质局第一勘探队 | Drill collar fishing equipment and method |
-
2015
- 2015-03-26 CN CN201520176402.7U patent/CN204591199U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062702A (en) * | 2021-03-08 | 2021-07-02 | 山东省煤田地质局第一勘探队 | Drill collar fishing equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20180326 |