CN201439694U - Taking and changing sleeve cutting salvage device - Google Patents
Taking and changing sleeve cutting salvage device Download PDFInfo
- Publication number
- CN201439694U CN201439694U CN2009201100016U CN200920110001U CN201439694U CN 201439694 U CN201439694 U CN 201439694U CN 2009201100016 U CN2009201100016 U CN 2009201100016U CN 200920110001 U CN200920110001 U CN 200920110001U CN 201439694 U CN201439694 U CN 201439694U
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- China
- Prior art keywords
- commutation
- groove
- slips
- pressure cap
- bearing pressure
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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 relates to a taking and changing sleeve cutting salvage device which aims at overcoming the defects that in the prior art, when in sleeve milling operation, the whole of a tubular column rotates, and a grasp salvage slip is easily separated from a cylinder body when the operation is obstructed. The upper end of a rotating shaft of the salvage device is fixedly connected with a power mechanism, and the lower end is fixedly connected with a cutting knife; a bearing pressure cap is fixedly arranged at the upper end part of the rotating shaft, and a steel ball is positioned at the upper end of the bearing pressure cap; a bearing pull cylinder, a reversing joint, a cylinder body and a guide shoe are sequentially fixed and connected from top to bottom; the lower end surface of a boss inside the upper end of the bearing pull cylinder sits on the steel ball; a groove and the boss which are meshed with each other are arranged between the lower end surface of the bearing pressure cap and the upper end surface of the reversing joint; the lower end of a control sleeve and the upper end of the slip are connected inside a ring positioned between the cylinder body as well as the reversing joint and the rotating shaft; the aperture of the screw thread of the bearing pressure cap is less than the external diameter of the boss of the rotating shaft; the control sleeve is provided with a reversing groove; and the front end of a reversing pin on the reversing joint is positioned inside the reversing groove. The salvage device has the advantages of reasonable structure, being safe and reliable, completing cutting and salvage in the operation for once, and having the function of withdrawing when coming across block.
Description
Affiliated technical field
The utility model relates to a kind of oil well repairing operation to be got and changes the cover special tool, especially relates to a kind ofly having cutting, salvaging, meeting getting of card exit function and change cover cutting fishing device.
Background technology
Along with the continuous prolongation of oil field development time and deepening constantly of development, great changes will take place for the fluid field on stratum, pressure field, all multifactor influences such as frequent in addition oil-water well measure and well workover construction and casing programme, completion cementing quality, tubing and corrosion, making sleeve pipes such as the breaking of Casing Failure, distortion, perforation, bad break damage phenomenon constantly takes place, getting and change the cover technology as a kind of workover process efficiently and effectively, is the important measures of oilfield stable production volume increase.Cover technology is changed in conventional getting, and need be lowered to cutter earlier and cut off sleeve pipe when guarantee that the outer annular space of oil jacket does not have fixed thing, and then the operation procedure twice that drags for lance salvaging oil jacket down just can finish the cover work of getting, and the activity duration is long.
Disclosed Chinese utility model patent on August 13rd, 2008 " can move back slip-type casing tube box cupling location fisher " (publication number CN201100111Y), bottom in top connection connects the left-hand thread releasing-joint, left-hand thread releasing-joint bottom connects cylindrical shell, cylinder inboard wall is the protruding key of the axial transposition of distribution evenly, and the cylindrical shell inner conical surface is arranged at the bottom of cylinder inboard wall; In cylindrical shell, there is one to grab and drag for slips, grabs and drag for the slips upper end slips limit base is arranged, the transposition groove is arranged on the outer wall of slips limit base; Grab and drag for the slips lower end male cone (strobilus masculinus) is arranged, grab drag for the slips male cone (strobilus masculinus) on the cylindrical shell inner conical surface to lower slider, make and grab the slip insert that drags for the slips lower end and shrink.Screw thread is connected with milling pipe or guide shoe in the lower end of cylindrical shell.This fisher get buy or get by illegal means in the construction possess salvagings, withdraw from, overlap milling, four kinds of functions of release; The cutting, get cover, the work of sleeve pipe tieback is all carried out in milling pipe.Because milling pipe or guide shoe are connected on the lower end of cylindrical shell, during the cover milling operation, this fisher integral body is all rotated with tubing string, particularly when card is met in operation, grabs and drags for slips with cylindrical shell easily breaks away from, and causes operation to be failed.
The utility model content
Change the milling pipe of cover cutting fishing device existence or the lower end that guide shoe is connected on cylindrical shell in order to overcome the milling of existing cover, during the cover milling operation, this fisher integral body is all rotated with tubing string, grab when card is met in operation and drag for slips and cylindrical shell easily breaks away from, the deficiency that causes the operation failure, the utility model provide a kind of getting to change cover cutting fishing device.
The technical scheme that its technical problem that solves the utility model adopts is: get and change cover cutting fishing device, comprise cylindrical shell, slips, the slips lower end is a bullet, and slips is arranged in the cylindrical shell endoporus, and the cylindrical shell lower end is the cone-shaped inner hole that matches with slips lower end bullet; Fixedlying connected with actuating unit in the axis of rotation upper end, fixedlys connected with cutter in the lower end; The load-bearing pressure cap is fixedly mounted on the axis of rotation upper end, and load-bearing pressure cap upper end is equipped with steel ball; The axis of rotation excircle of load-bearing pressure cap below has boss; Bearing tube, commutation joint, cylindrical shell, guide shoe from top to bottom is fixedly connected sequentially; The lower surface that bears tube upper end inner convex platform is sitting on the steel ball; The upper surface of the lower surface of load-bearing pressure cap and commutation joint has can intermeshing groove and boss; Control cover lower end is connected with the slips upper end, slips, controls and overlaps in cylindrical shell, the annular space between joint and the axis of rotation of commutating; The inner convex platform aperture of control set upper side is less than the boss rank external diameter of axis of rotation; On the sleeve of control cover the commutation groove is arranged; The front end that radially is fixedly mounted on the commutation pin on the commutation joint is positioned at the commutation groove.Commutation groove on the control cover sleeve is " L " type; When cutting, fishing, the commutation pin is positioned at commutation groove " L " upper end; When salvaging was hampered the upper lifting pipe post, the commutation pin was positioned at the right side, lower end of commutation groove " L ".When the commutation pin is positioned at the upper end of commutation groove " L ", gapped between the cone-shaped inner hole of the bullet of slips lower end and cylindrical shell lower end.
The beneficial effects of the utility model are, and are rational in infrastructure, safe and reliable, are easy in time judge whether oil jacket cuts off; Realize that an operation finishes cutting, salvages; Have and can move back function, oil jacket that can be after cutting in time withdraws from fishing socket when meeting card, prevents that the down-hole complex accident from taking place; Use manpower and material resources sparingly the reduction of erection time.
Description of drawings
Fig. 1 is that the utility model is got and changed cover cutting fishing device structural representation.
Among the figure: 1. axis of rotation, 2. guide shoe, 3. cylindrical shell, 4. slips, 5. control cover, 6. commutation pin, 7. boss, 8. commutation groove, 9. commutation joint, 10. load-bearing pressure cap, 11. steel balls, 12. bear tube.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further.
With reference to accompanying drawing 1.The utility model is got and is changed cover cutting fishing device, mainly comprises axis of rotation 1, load-bearing pressure cap 10, bears tube 12, commutation joint 9, cylindrical shell 3, control cover 5, slips 4 etc.Axis of rotation 1 is a quill shaft, fixedlys connected with actuating unit in the upper end, and actuating unit provides power for axis of rotation 1, fixedlys connected with cutter in the lower end, and cutter is used to cut sleeve pipe.Load-bearing pressure cap 10 is fixedly mounted on the upper end of axis of rotation 1, adopts screw thread fixedly connected usually; The upper surface of load-bearing pressure cap 10 is evenly equipped with groove, and steel ball 11 is installed in the groove.
Control cover 5 lower ends are connected with slips 4 upper ends, and present embodiment adopts the evagination step that overlaps 5 lower ends and endoporus boss rank, the slips 4 upper end mode that is connected of controlling.In control cover 5, the annular space of slips 4 between cylindrical shell 3, commutation joint 9 and axis of rotation 1.Slips 4 lower ends are bullet, and cylindrical shell 3 lower ends are the cone-shaped inner holes that match with slips 4 lower end bullets.On axis of rotation 1 cylindrical boss 7 is arranged, and the aperture at load-bearing pressure cap (10) screw thread place is less than boss 7 external diameters of axis of rotation 1.
The utility model embodiment is cutter to be installed in axis of rotation 1 lower end of changing cover cutting fishing device of getting that assembling finishes, last termination actuating unit composition cutting fishing string.At this moment, bear the tube 12 upper ends interior step be sitting on the steel ball 11 of load-bearing pressure cap 10 upper ends; Commutation pin 6 on the commutation joint 9 is positioned at commutation groove 8 " L " upper end of control cover 5; The cone of slips 4 lower ends is in free state.To cut fishing string is lowered in the pit shaft to top of fish.
The cutting of sleeve pipe is salvaged: at first, transfer the cutting fishing string sleeve body is introduced in the cylindrical shell 3 by guide shoe 2; Turn on pump, slowly the upper lifting pipe post makes the lower end cone of slips 4 contact with cylindrical shell 3 internal taper holes simultaneously, firmly grasps fish until slips 4; Then, turn on pump is driven rotating disk and is driven waterpower internal cutter cutting sleeve pipe, behind suspending weight judgement casing severing, and the termination of pumping of stall dish, the upper lifting pipe post trips out the sleeve pipe that is cut.
Cutting back upper lifting pipe post is met card and is tripped out the cutting fishing string: when the upper lifting pipe post is met card after the operation of cutting sleeve pipe, the moved back function that the utlity model has, can in time successfully will salvage part and unclamp, will cut fishing string and propose pit shaft, prevent the generation of down-hole complex accident.Concrete operations are as follows: to transferring tubing string, promoting commutation joint 9 by slips 4 moves up, load-bearing pressure cap 10 lower surfaces and the groove and the boss of commutation joint 9 upper surfaces are meshing with each other, continue to transfer tubing string, control cover 5 is moved up until the lower end of commutation pin 6 to " L " type commutation groove 8; Dextrorotation axis of rotation 1 forces the commutation pin 6 on the commutation joint 9 to slide into the right side, lower end at " L " type commutation groove 8 of control cover 5 by the lower end, and upper lifting pipe post slips 4 breaks away from the constraint of cylindrical shell 3, and slips 4 unclamps fish, just the cutting fishing string can be proposed pit shaft.
Claims (4)
1. get and change cover cutting fishing device for one kind, comprise cylindrical shell, slips, the slips lower end is a bullet, and slips is arranged in the cylindrical shell endoporus, and the cylindrical shell lower end is the cone-shaped inner hole that matches with slips lower end bullet, it is characterized in that:
Fixedlying connected with actuating unit in axis of rotation (1) upper end, fixedlys connected with cutter in the lower end; Load-bearing pressure cap (10) is fixedly mounted on axis of rotation (1) upper end, and load-bearing pressure cap (10) upper end is equipped with steel ball (11); Axis of rotation (1) excircle of load-bearing pressure cap (10) below has boss (7);
Bearing tube (12), commutation joint (9), cylindrical shell (3), guide shoe (2) from top to bottom is fixedly connected sequentially; The lower surface that bears tube (12) upper end inner convex platform is sitting on the steel ball (11);
The upper surface of the lower surface of load-bearing pressure cap (10) and commutation joint (9) has can intermeshing groove and boss;
Control cover (5) lower end is connected with slips (4) upper end, and slips (4), control cover (5) are positioned at the annular space between cylindrical shell (3), commutation joint (9) and the axis of rotation (1); The aperture at load-bearing pressure cap (10) screw thread place is less than boss (7) external diameter of axis of rotation (1); On the sleeve of control cover (5) commutation groove (8) is arranged; The front end that radially is fixedly mounted on the commutation pin (6) on the commutation joint (9) is positioned at commutation groove (8).
2. according to claim 1 getting changed cover cutting fishing device, and it is characterized in that: the commutation groove (8) on described control cover (5) sleeve is " L " type; When cutting, fishing, commutation pin (6) is positioned at commutation groove (8) " L " upper end; When salvaging was hampered the upper lifting pipe post, commutation pin (6) was positioned at the right side, lower end of commutation groove (8) " L ".
3. according to claim 2 getting changed cover cutting fishing device, it is characterized in that: when described commutation pin (6) is positioned at the upper end of commutation groove (8) " L ", gapped between the cone-shaped inner hole of the bullet of slips (4) lower end and cylindrical shell (3) lower end.
4. according to claim 1 getting changed cover cutting fishing device, and it is characterized in that: described load-bearing pressure cap (10) upper surface is evenly equipped with groove, and steel ball (11) is installed in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100016U CN201439694U (en) | 2009-07-03 | 2009-07-03 | Taking and changing sleeve cutting salvage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100016U CN201439694U (en) | 2009-07-03 | 2009-07-03 | Taking and changing sleeve cutting salvage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439694U true CN201439694U (en) | 2010-04-21 |
Family
ID=42544364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201100016U Expired - Lifetime CN201439694U (en) | 2009-07-03 | 2009-07-03 | Taking and changing sleeve cutting salvage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439694U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681144A (en) * | 2019-02-15 | 2019-04-26 | 长江大学 | A kind of integral type deep-sea casing-pipe cutting fishing device |
| CN111101884A (en) * | 2018-10-25 | 2020-05-05 | 中国石油天然气股份有限公司 | Device and method for extracting cannula |
| CN111691842A (en) * | 2020-06-19 | 2020-09-22 | 中国石油大学(华东) | Cutting and fishing method |
-
2009
- 2009-07-03 CN CN2009201100016U patent/CN201439694U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101884A (en) * | 2018-10-25 | 2020-05-05 | 中国石油天然气股份有限公司 | Device and method for extracting cannula |
| CN109681144A (en) * | 2019-02-15 | 2019-04-26 | 长江大学 | A kind of integral type deep-sea casing-pipe cutting fishing device |
| CN109681144B (en) * | 2019-02-15 | 2023-09-19 | 长江大学 | Integrated deep sea sleeve cutting and salvaging device |
| CN111691842A (en) * | 2020-06-19 | 2020-09-22 | 中国石油大学(华东) | Cutting and fishing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100421 |