CN204738778U - Screw thread make -up drags for lance in pit - Google Patents
Screw thread make -up drags for lance in pit Download PDFInfo
- Publication number
- CN204738778U CN204738778U CN201520473712.5U CN201520473712U CN204738778U CN 204738778 U CN204738778 U CN 204738778U CN 201520473712 U CN201520473712 U CN 201520473712U CN 204738778 U CN204738778 U CN 204738778U
- Authority
- CN
- China
- Prior art keywords
- screw thread
- slips
- lance
- drags
- mandrel
- 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
Provided is a screw thread make -up drags for lance in pit includes: top connection (b) (b) 1 (b) (b), dabber (b) (b) 2 (b) (b), pin (b) (b) 3 (b) (b), stop collar (b) (b) 4 (b) (b), slips (b) (b) 5 (b) (b), characterized by: screw thread make -up drags for lance in pit is cylindric, the cover is gone up to dabber (b) (b) 2 (b) (b) has slips (b) (b) 5 (b) (b), slips (b) (b) 5 (b) (b) inserts in the track (b) (b) A (b) (b) of dabber (b) (b) 2 (b) (b) through pin (b) (b) 3 (b) (b), spacing slip, the outside cover of slips (b) (b) 5 (b) (b) has stop collar (b) (b) 4 (b) (b), the upper end and top connection (b) (b) 1 (b) (b) the threaded connection of dabber (b) (b) 2 (b) (b). The utility model is suitable for a packer or (b) (b) Y445 (b) (b) packer are filled in borehole operation salvage in oil field borehole operation field, drag for firmly during the operation, move back to reach (b), and (b) salvages the success rate height, reduces the operating cost, shorten the operation and account for the well cycle, and rate when the improvement oil well is produced increases crude oil production. (B, )
Description
Technical field
the utility model relates to oilfield downhole operation fishing tool, and specifically a kind of down-hole screw thread make-up drags for lance.
Background technology
salvage wrapping wire Gudong field well in operation year at about 600 mouthfuls, salvaging filling envelope or Y445 envelope salvage the requisite link of wrapping wire group, but due at present without Special fishing tool, can only use make-up or the die nipple salvaging of corresponding size, fishing success ratio is low, and easily cause accident complicated, mainly there is following problem: one is that make-up and die nipple are all and can not move back fishing tool, after salvaging unfreezing is invalid, can only back-off, if packer cannot deblocking, do not open button, then can cause the accident complicated.And conventional returnable fishing spear is as little in box cupling drags for lance reversing torque, left hand fishing spear infinite place device, easily drags for packer inner core, causes packer can not deblocking, therefore all cannot use; Two is make-up and die nipple when salvaging, and need rotate forward oil pipe make-up or thread making, if packer deblocking, then can be held by packer in advance, increase and salvage operation, make process complicated; If make-up repeatedly, then easy at packer left-hand thread position back-off, increase salvage amount; If three be oil well long-time not on when repairing, because of reasons such as packer screw thread corrosion, use and buckle fisher be very easy to drag for sky, die nipple can only be used, and die nipple due to its tapering large, thread making screw thread is less, and unfreezing load is relatively little.
Summary of the invention
the purpose of this utility model is exactly in view of the foregoing defects the prior art has, designs a kind of down-hole screw thread make-up and drags for lance.
the utility model is realized by following technical proposals:
down-hole screw thread make-up drags for lance, comprising: top connection, mandrel, pin, stop collar, slips.Described down-hole screw thread make-up drags for lance for cylindric, and on mandrel, cover has slips, and slips is inserted in the track of mandrel by pin, and spacing slip, the outer cover limited location cover of slips, the upper end of mandrel is threaded with top connection.
the top connection endoporus upper/lower terminal that above-mentioned down-hole screw thread make-up drags in lance is equipped with internal thread.
above-mentioned down-hole screw thread make-up drags in the middle of the mandrel in lance and is provided with " L " shape track, and bottom is tapered section, and cylindrical is laid with 3 ~ 4 wedge keys, and lower end endoporus is provided with internal thread, and upper end is provided with external screw thread.
the slips bottom that above-mentioned down-hole screw thread make-up drags in lance is provided with external screw thread, is laid with 3 ~ 4 keyways, and top is provided with a through hole, installs pin.
the keyway of the slips bottom that above-mentioned down-hole screw thread make-up drags in lance matches with the wedge key of mandrel bottom.
operating principle
down-hole screw thread make-up drags for lance and enters fish box cupling, relies on the radial direction expanding force after male cone (strobilus masculinus) laminating in mandrel and slips, is connected according to its elastic deformation with coupling inner thread, if need back-off, rotates forward oil pipe mandrel and passes to slips by wedge key, realize back-off; If need exit, transfer tubing string without the pressure of the drill, make slips at top dead-centre, enclose with pipe wrench main story tubing string 1/2, pin enters transverse direction by the longitudinal direction of track, and keeps pulling force, and carry slowly, down-hole screw thread make-up drags for lance and exits.
the beneficial effects of the utility model are: be applicable to oilfield downhole operation field underground work and salvage filling packer or Y445 packer, drag for live, move back and draw during operation,
fishing success ratio is high, reduces operating cost, shortens operation and accounts for the well cycle, and rate during raising oil well production, increases crude output.
Accompanying drawing explanation
fig. 1-the utility model master is depending on partly cuing open structural representation.
in figure, 1. top connection, 2. mandrel, 2.1. wedge key; 3. pin, 4. stop collar, 5. slips; A. track, B. keyway.
Detailed description of the invention
below in conjunction with accompanying drawing, enforcement of the present utility model is further elaborated:
embodiment 1
down-hole screw thread make-up drags for lance and is made up of top connection 1, mandrel 2, pin 3, stop collar 4, slips 5.Described down-hole screw thread make-up drags for lance for cylindric, and on mandrel 2, cover has slips 5, and slips 5 inserts in the track A of mandrel 2 by pin 3, spacing slip, and the outer cover limited location cover 4 of slips 5, the upper end of mandrel 2 is threaded with top connection 1.
embodiment 2
the mandrel 2 bottom tapered section cylindrical that down-hole screw thread make-up drags for lance is laid with 3 wedge keys 2.1, and slips 5 bottom is laid with 3 keyway B, and the two matches.
embodiment 3
the mandrel 2 bottom tapered section cylindrical that down-hole screw thread make-up drags for lance is laid with 4 wedge keys 2.1, and slips 5 bottom is laid with 4 keyway B, and the two matches.
embodiment 4
method of operating: first, down-hole screw thread make-up being dragged for joint 1 on lance with keeping a grip on is connected, and G.I.H, makes slips 5 enter fish box cupling; The second, upper lifting pipe is lived, and relies on the radial direction expanding force after male cone (strobilus masculinus) laminating in mandrel 2 and slips 5, is connected according to its elastic deformation with coupling inner thread; 3rd, if need back-off, rotate forward oil pipe, mandrel 2 passes to slips 5 by wedge key 2.1, realizes back-off; 4th, if need exit, transfer tubing string without the pressure of the drill, make slips 5 be positioned at top dead-centre, enclose with pipe wrench main story tubing string 1/2, pin 3 enters transverse direction by the longitudinal direction of track A, and keeps pulling force, carry slowly, down-hole screw thread make-up drags for lance and exits, thus reaches and drag for live, move back the object drawn.
Claims (5)
1. screw thread make-up in down-hole drags for a lance, comprising: top connection (1), mandrel (2), pin (3), stop collar (4), slips (5); It is characterized in that: described down-hole screw thread make-up drags for lance for cylindric, the upper cover of mandrel (2) has slips (5), slips (5) inserts in the track (A) of mandrel (2) by pin (3), spacing slip, the outer cover limited location cover (4) of slips (5), the upper end of mandrel (2) is threaded with top connection (1).
2. down-hole according to claim 1 screw thread make-up drags for lance, it is characterized in that: described top connection (1) endoporus upper/lower terminal is equipped with internal thread.
3. down-hole according to claim 1 screw thread make-up drags for lance, it is characterized in that: be provided with " L " shape track (A) in the middle of described mandrel (2), bottom is tapered section, and cylindrical is laid with 3 ~ 4 wedge keys (2.1), lower end endoporus is provided with internal thread, and upper end is provided with external screw thread.
4. down-hole according to claim 1 screw thread make-up drags for lance, it is characterized in that: described slips (5) bottom is provided with external screw thread, and be laid with 3 ~ 4 keyways (B), top is provided with a through hole.
5. the down-hole screw thread make-up according to claim 1 or 3,4 drags for lance, it is characterized in that: the keyway (B) of described slips (5) bottom matches with the wedge key (2.1) of mandrel (2) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520473712.5U CN204738778U (en) | 2015-07-05 | 2015-07-05 | Screw thread make -up drags for lance in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520473712.5U CN204738778U (en) | 2015-07-05 | 2015-07-05 | Screw thread make -up drags for lance in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204738778U true CN204738778U (en) | 2015-11-04 |
Family
ID=54420519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520473712.5U Expired - Fee Related CN204738778U (en) | 2015-07-05 | 2015-07-05 | Screw thread make -up drags for lance in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204738778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194049A (en) * | 2016-08-30 | 2016-12-07 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing anti-dropping apparatus and using method thereof |
-
2015
- 2015-07-05 CN CN201520473712.5U patent/CN204738778U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194049A (en) * | 2016-08-30 | 2016-12-07 | 中国石油集团渤海钻探工程有限公司 | Coiled tubing anti-dropping apparatus and using method thereof |
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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: 20151104 Termination date: 20160705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |