CN204327025U - Spring window cutting dipper - Google Patents
Spring window cutting dipper Download PDFInfo
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- CN204327025U CN204327025U CN201420804763.7U CN201420804763U CN204327025U CN 204327025 U CN204327025 U CN 204327025U CN 201420804763 U CN201420804763 U CN 201420804763U CN 204327025 U CN204327025 U CN 204327025U
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- cylindrical shell
- spring
- fish
- window cutting
- key
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Abstract
The utility model discloses spring window cutting dipper, relate to oil field and salvage apparatus, be specifically related to a kind of improvement opportunity of spring fishing socket structure.Comprise top connection (1) and cylindrical shell (4), it is characterized in that, top connection (1) is connected with cylindrical shell (4) threaded upper ends; Have three holes on cylindrical shell (4) top, be separately installed with key (2) in three holes, key (2) the inner coordinates with the hole on top connection 1 surface, and key (2) center is provided with screw (3); Three fenestras are arranged at cylindrical shell (4) bottom, are provided with spring steel plate (5) inside three fenestras.The utility model, for the shortcoming of existing fishing tool, have developed a kind of novel spring window cutting dipper, can realize the salvaging of tubing junk, can repair and change top of fish, also can salvage by back-off.
Description
Technical field
The utility model relates to oil field and salvages apparatus, is specifically related to a kind of improvement opportunity of spring fishing socket structure.
Background technology
There is corrosion in the larger part of oil-water well of Zhongyuan Oil Field.Because tube corrosion is serious, cause very big inconvenience to salvaging construction.Use conventional Fishing Tools to salvage the tubing junk of seriously corroded, operation is many, and cost is high, and the engineering time is long.In addition, the basic Dou Shi clean-out crew of well leaving junk salvaged, and just go up overhaul when processing bad, top of fish receives infringement in various degree, and the impaired rear conventional tool of top of fish can not be salvaged, and can only first repair top of fish and then salvage.Above-mentioned situation uses traditional workover tool process, and operation is many, and the engineering time is long.
The using and having problems of existing spring dipper: 1, purposes: salvage the free junk of tubing with box cupling or step.As: single oil pipe, the instrument such as tubing junk, drill pipe nipple, swab having box cupling; 2, structure (as shown in Figure 1): spring fishing socket by top connection, cylindrical shell, spring leaf, the compositions such as rivet; 3, operating principle: rely on the spring leaf being riveted on cylinder inboard wall to block junk and realize salvaging.When junk to enter in cylinder and heads into spring leaf, spring leaf is outer swollen, and its bounce tightly bites junk body, and stuck fast step, above carries drilling tool and can pull junk out simultaneously; 4, have problems: (1) can only salvage free junk.As: single oil pipe, drilling rod or the instrument with step class.(2) instrument is short, is not suitable for the salvaging of longer junk.(3) spring leaf and rivet can not bear larger weight.(4) guide shoe is single, function singleness.
Utility model content
The utility model provides a kind of spring window cutting dipper, and the utility model, for the shortcoming of existing fishing tool, have developed a kind of novel spring window cutting dipper, can realize the salvaging of tubing junk, can repair and change top of fish, also can salvage by back-off.
For solving the problem, the utility model adopts following technical scheme: spring window cutting dipper, comprises top connection 1 and cylindrical shell 4, and top connection 1 is connected with cylindrical shell 4 threaded upper ends; Have three holes on cylindrical shell 4 top, be separately installed with key 2 in three holes, key 2 the inner coordinates with the hole on top connection 1 surface, and key 2 center is provided with screw 3; Three fenestras are arranged at cylindrical shell 4 bottom, are provided with spring steel plate 5 inside three fenestras.
Main improvement of the present utility model: (1) between top connection and cylindrical shell by being threaded, and with three keys (transmit button square, realize back-off, cover milling); (2) cylindrical shell is processed into 10.5 meters long.Cylindrical shell has six holes, three hole dress key use on top, and three holes of bottom are used for mounting spring sheet, and spring leaf is screwed on cylindrical shell; (3) position is windowed apart from 0.3m place, cylindrical shell lower end; (4) can use the guide shoe of three kinds of forms, guide shoe is connected with cylindrical shell by screw thread.
The utility model simplifies working procedure, shortens the engineering time, reduce cost after making original spring dipper into spring window cutting dipper.
Accompanying drawing explanation
Fig. 1 is the structural representation of background technology, symbol description in figure: top connection 1-1, cylindrical shell 1-2, spring leaf 1-3, rivet 1-4;
Fig. 2 is the utility model structural representation;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is using state reference diagram of the present utility model.
Symbol description in Fig. 2-4: top connection 1, key 2, screw 3, cylindrical shell 4, spring steel plate 5, screw 6, guide shoe 7, sleeve pipe 8, top of fish 9, oil pipe 10, tubing coupling 11, artificial bottom of a well 12.
Detailed description of the invention
By best embodiment, the utility model is described in detail below.
As Figure 2-3, spring window cutting dipper, comprises top connection 1 and cylindrical shell 4, and top connection 1 is connected with cylindrical shell 4 threaded upper ends; Have three holes on cylindrical shell 4 top, be separately installed with key 2 in three holes, key 2 the inner coordinates with the hole on top connection 1 surface, and key 2 center is provided with screw 3; Three fenestras are arranged at cylindrical shell 4 bottom, are provided with spring steel plate 5 inside three fenestras.
Cylindrical shell 4 length is 10.5 meters, and three fenestras of cylindrical shell 4 bottom are apart from 0.3 meter, cylindrical shell 4 lower end.Cylindrical shell 4 lower end is provided with guide shoe 7, and guide shoe 7 is threaded with cylindrical shell 4.
By being threaded between the top connection of former spring dipper and cylindrical shell.The spring window cutting dipper of development has back-off needs, considers and can not bear huge moment of torsion between top connection and cylindrical shell, between top connection and cylindrical shell, has therefore installed three keys additional connect.Concrete grammar is: lengthened with lower portion by spring window cutting dipper top connection screw thread, at screw thread with lower portion milling three keyways, cylindrical shell is opened three windows corresponding with keyway, with three keys, top connection and cylindrical shell are coupled together, and be screwed in key slot center, when preventing back-off, top connection and cylindrical shell are thrown off, and by key, the moment of torsion of top connection are passed to cylindrical shell.Barrel designs is that 10.5m is long, instrument can be allowed to exceed top of fish, salvages bottom tubing coupling (ultimate range of top of fish distance bottom tubing coupling is the length 9.5m of an oil pipe).Cylindrical shell bottom can connect in above three kinds of guide shoes any one, to adapt to the difference needs of workover treatment.Use cover milling head formula guide shoe when need repair top of fish, can top of fish be repaired by cover milling; Salvage back-off and use other two kinds of guide shoes.
The operation using method of spring window cutting dipper:
(1), before instrument is gone into the well, check that whether each several part screw thread is intact.Can not loosen after key is first-class, whether the minimum diameter of measuring spring sheet closure state coordinates with fish, and stays figure to be checked.The assembling sequence of operating tool string is (from bottom to top): cover milling head formula guide shoe spring window cutting dipper+safety joint+left-hand thread drilling tool.(2) drill change top of fish 2-3m under, turn on pump well-flushing, slow-speed drilling tool is transferred.Observe weight indicator to enter to change with side, remember that touching fish side enters and free suspending weight.3) repair top of fish: above carry drilling tool 0.2-0.3m, turn on pump circulates, and starts rotary tools.Rotating speed 40-60r/min, pressurization 1-5KN, observe weight indicator change, transferring without being obviously hampered, illustrating that top of fish repairs.Now repair top of fish redundance.As shown in Figure 4 (during usual drilling depth 0.5-1m, top of fish just can be fixed).(4) salvage: top of fish repairs and continues to transfer drilling tool and observe weight indicator simultaneously, (illustrate that the spring steel plate in dipper is pressed to window by box cupling) as suspending weight decline 20-30KN to continue to transfer, suspending weight returns to free suspending weight and (illustrates that box cupling crosses spring leaf, spring leaf clamping oil pipe body), on carry suspending weight and rise and (spring leaf clamping oil pipe body is described, spring leaf withstands the step below box cupling), suspending weight rises, and captures successfully.(5), back-off: above carry drilling tool, exceed free suspending weight 30-40KN, reversion back-off, reversion 20-30 encloses suspending weight and declines, and back-off success is described.If (suspending weight is without significant change, illustrate to skid in spring leaf top and box cupling step place, increase upper lifting force and exceed former suspending weight 50-60KN, repetition back-off, at most can on mention and exceed former load 80KN, because considering release fish, when general oil pipe is not very tight, above carry exceed former suspending weight 40KN just can back-off successfully).(6) discharge fish: when the tight especially back-off of oil pipe is not opened, discharge fish, above carry and exceed former suspending weight 120KN the hold-down screw of spring steel plate can be made to cut off, instrument can trip out.When top of fish heavy corrosion or top of fish are pumps, directly can descend inclined mouth type spring window cutting dipper, operating procedure substantially the same (only having lacked the process that the 3rd step repaiies top of fish).
The scope of application of spring window cutting dipper:
(1) top of fish is destroyed when not being very serious (can confirm by printing), can carry out cover milling salvaging to top of fish.(2) top of fish is tubing junk, and seriously corroded, when inconvenience conventional tool is salvaged, this instrument can be used.(3) top of fish is pump, can with pipe nipple under this instrument wrecking pump.
The application notice of spring window cutting dipper:
(1) junk is with inapplicable during major diameter instrument.Because after engaging fish, instrument when back-off is not opened, to be made to slip out of the hand.Method is: mention Design cooling load by drilling tool, and the hold-down screw of spring leaf is cut off, and spring leaf will fall oil jacket annular space.As with major diameter instrument, lower step salvaging or cover milling operation are carried out in inconvenience.(2) top of fish top has cover to become, and can not use this instrument.(3) check that whether screw thread is intact, be good for and can not loosen, screw uses the screw reaching design standard of regular manufacturer production, the non-compliant screw of inaccurate use, and screw can only use once, must not reuse.(4) drilling tool speed of going into the well wants slow, prevents bit freezing in decentralization process.Result of use is analyzed:
After top of fish is destroyed, traditional processing method is: first carry out milling to top of fish, then salvage; Or draw destroyed top of fish in major diameter female coupling tap, carry out back-off.With female coupling tap process top of fish, shortcoming is that instrument can not be slipped out of the hand when back-off is not opened.
Use the advantage of this instrument;
(1) original instrument milling is salvaged will operation twice.And spring window cutting dipper need only one time just, can save 30 hours; (2) milling is overlapped less relative to the infringement of milling to sleeve pipe to the infringement of sleeve pipe; (3) save construction cost, win the time for crude oil produces; (4) for top of fish be the junk of oil well pump, salvaging can be made to simplify.After engaging fish, when activity unfreezing is invalid, carry out back-off, if top of fish is pump, pump may be fallen apart, and pump just can be avoided to fall to fall apart, make salvaging simple if the box cupling following to pipe nipple under pump carries out salvaging; (5) for the oil pipe (tube corrosion becomes cellular) of seriously corroded, salvage with blue formula dipper or spiral dipper and once can only pull a slice or several out, and salvage with spring window cutting dipper, once at least pull an oil pipe out, a bite well can save 10 brills, save time 8-12 days, cost-saving as following table.
The result of use of spring window cutting dipper
Illustrate: A is that top of fish is destroyed; B is oil pipe heavy corrosion; C is top of fish is pump.
Conclusion:
Spring window cutting dipper, the repeatedly practice and application through scene, this instrument has fabulous practicality, safety, the performance such as efficient, and structure is simple, easy to operate.In Downhole Construction, be applicable to the tubing junk salvaging process seriously corroded, and ensure that construction safety, reduce the labour intensity of workman to a great extent, improve operating efficiency, reduce cost.Facts have proved, novel spring window cutting dipper is simply effective, is applicable to current Production requirement, has wide promotion prospect.This instrument is used to save 17.6 ten thousand yuan altogether.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.
Claims (3)
1. spring window cutting dipper, comprise top connection (1) and cylindrical shell (4), it is characterized in that, top connection (1) is connected with cylindrical shell (4) threaded upper ends; Have three holes on cylindrical shell (4) top, be separately installed with key (2) in three holes, key (2) the inner coordinates with the hole on top connection 1 surface, and key (2) center is provided with screw (3); Three fenestras are arranged at cylindrical shell (4) bottom, are provided with spring steel plate (5) inside three fenestras.
2. spring window cutting dipper as claimed in claim 1, it is characterized in that, cylindrical shell (4) length is 10.5 meters, and three fenestras of cylindrical shell (4) bottom are apart from 0.3 meter, cylindrical shell (4) lower ends.
3. spring window cutting dipper as claimed in claim 1, it is characterized in that, cylindrical shell (4) lower end is provided with guide shoe (7), and guide shoe (7) is threaded with cylindrical shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804763.7U CN204327025U (en) | 2014-12-16 | 2014-12-16 | Spring window cutting dipper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804763.7U CN204327025U (en) | 2014-12-16 | 2014-12-16 | Spring window cutting dipper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327025U true CN204327025U (en) | 2015-05-13 |
Family
ID=53163397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420804763.7U Expired - Fee Related CN204327025U (en) | 2014-12-16 | 2014-12-16 | Spring window cutting dipper |
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| Country | Link |
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| CN (1) | CN204327025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703733A (en) * | 2015-11-17 | 2017-05-24 | 贵州高峰石油机械股份有限公司 | Coiled tubing fishing method and fishing barrel |
-
2014
- 2014-12-16 CN CN201420804763.7U patent/CN204327025U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703733A (en) * | 2015-11-17 | 2017-05-24 | 贵州高峰石油机械股份有限公司 | Coiled tubing fishing method and fishing barrel |
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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 |
Granted publication date: 20150513 Termination date: 20151216 |
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| EXPY | Termination of patent right or utility model |