CN201778718U - Anti-ejection locking fishing spear - Google Patents
Anti-ejection locking fishing spear Download PDFInfo
- Publication number
- CN201778718U CN201778718U CN2010205493144U CN201020549314U CN201778718U CN 201778718 U CN201778718 U CN 201778718U CN 2010205493144 U CN2010205493144 U CN 2010205493144U CN 201020549314 U CN201020549314 U CN 201020549314U CN 201778718 U CN201778718 U CN 201778718U
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- ejection
- spear
- pipe
- tooth
- mandrel
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-ejection locking fishing spear which is used for fishing operation of underground anti-ejection releasing technical pipe string of an oil producing well of petroleum industry. The anti-ejection locking fishing spear comprises an upper joint, an expand pipe mandrel, a spear tooth and a washing pipe, wherein the spear tooth is arranged outside the expand pipe mandrel; the upper joint, the expand pipe mandrel and the washing pipe are sequentially connected, a compression mechanism is arranged between the spear tooth and the upper joint, the upper end of the expand pipe mandrel is provided with a check ring, an anti-ejection slip inner cone is locked at a releasing end by using the compression mechanism, and the check ring is used for preventing the expand pipe mandrel from separating from the upper joint. The utility model has simple structure and low cost, is convenient for operation, and solves the problems that when a fishing operation movable pipe string of the underground anti-ejection releasing technical pipe string of the current oil field is released, the anti-ejection slip inner cone synchronously descends to open a anti-ejection slip tooth block again; and when the pipe string is backed off, the upper joint of the anti-ejection locking fishing spear is released to avoid fish top complication. The utility model increases the validity and the safety of the fishing operation, increases operation success ratio and has better economic benefit.
Description
Technical field
The utility model relates to the down-hole fishing tool of petroleum industry, and lance is dragged in the locking of particularly a kind of anti-top, is used for the give up fishing of process pipe string of producing well down-hole Fang Ding.
Background technology
Oilfield downhole operation is often used the anti-process pipe string of giving up that pushes up and is realized oil production by layer, and follow-up measure need be salvaged anti-the top when giving up process pipe string, need use anti-top of special use to drag for lance salvaging anti-jack slips inner cone, pulls the anti-process pipe string of giving up that pushes up out.Discharge when being obstructed at the Fang Ding process pipe string bottom packer of giving up, put on needing and let live moving unfreezing, but since common anti-top drag for lance drag for obtain the anti-jack slips inner cone after, there is not hold-down mechanism, anti-top inner cone DL synchronization opened anti-jack slips once more when tubing string was transferred in activity, was unfavorable for tubing string unfreezing deblocking; When unfreezing is unsuccessful, when needing to implement the tubing string back-off, often drags for the lance top connection and open on the other hand, make top of fish complicated from anti-top
Summary of the invention
The purpose of this utility model is that lance is dragged in a kind of anti-top locking of design, overcome existing common defective of dragging for lance, solve anti-jack slips and open once more and drag for the problem that lance top connection place is threaded off, be used for the give up fishing of process pipe string of down-hole, oil field Fang Ding, improve job success ratio.
The purpose of this utility model is achieved in that the locking of a kind of anti-top drags for lance and comprise top connection, expand tube mandrel, lance tooth and washing pipe, the lance tooth is loaded on the outside of expand tube mandrel, top connection, expand tube mandrel are connected successively with washing pipe, between lance tooth and top connection, be provided with hold-down mechanism, be provided with back-up ring in the upper end of expand tube mandrel.Utilize hold-down mechanism that the anti-jack slips inner cone is locked in and discharge end, can not thread off with back-up ring assurance expand tube mandrel and top connection.
After adopting said structure, this usefulness is novel to have following useful effect: when needing to salvage anti-top and giving up the anti-jack slips inner cone of process pipe string, the connection fishing string is down to the precalculated position.After the flushing of cement pump truck, transferring tubing string pressurization, that instrument lance tooth is docked with anti-jack slips inner cone screw thread is identical, back main story tubing string 10-15 circle is carried in examination, and top connection is advanced button with the expand tube mandrel and contacted with the anti-jack slips inner cone, salvages the anti-jack slips inner cone and goes upward to terminal point.The give up anti-jack slips block teeth of process pipe string of anti-top are in the off-position, put in the enforcement when putting tubing string activity unfreezing, and the anti-jack slips inner cone can DL synchronization and make the anti-jack slips block teeth sit card, help the anti-top process pipe string unfreezing deblocking of giving up.Invalid in the activity unfreezing, when needing to implement the tubing string back-off, the expand tube mandrel is provided with back-up ring, guarantees can not hold button from instrument top connection lower end, avoids top of fish complicated.The utility model is simple in structure, simple operation, cost is low, when having solved present oil field down-hole Fang Ding and having given up the movable tubing string unfreezing of process pipe string fishing, anti-jack slips inner cone DL synchronization drags for the problem that lance top connection place is threaded off when opening the problem of anti-jack slips block teeth and tubing string back-off once more, avoid top of fish complicated.Improve the validity and the safety of salvaging operation, improved job success ratio, had favorable economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 be among the utility model Fig. 1 A-A to sectional view.
Fig. 3 is that the utility model is salvaged the principle view.
Fig. 4 is that the utility model is salvaged deblocking duty view.
The specific embodiment
Describing in detail according to the utility model below in conjunction with accompanying drawing provides the locking of a kind of anti-top to drag for the concrete structure of lance.A kind of anti-top locking is dragged for lance and is comprised top connection 1, expand tube mandrel 2, lance tooth 6 and washing pipe 7, lance tooth 6 is loaded on expand tube mandrel 2 outsides, top connection 1, expand tube mandrel 2 and washing pipe 7 are connected successively, are provided with hold-down mechanism between lance tooth 6 and top connection 1, are provided with back-up ring 3 in the upper end of expand tube mandrel 2.Hold-down mechanism comprises baffle ring 4 and compression spring 5, and the round groove that is provided with cooperates with compression spring 5 in the bottom of baffle ring 4, will compress spring 5 and be installed between baffle ring 4 and the lance tooth 6.Back-up ring 3 is installed in the mounting groove of expand tube mandrel 2 upper ends, and the external diameter of back-up ring 3 is greater than the external diameter of expand tube mandrel 2, less than the internal diameter of top connection 1.
As shown in Figure 1, the upper end of expand tube mandrel 2 is provided with screw thread and is connected with top connection 1, and back-up ring 3 is housed, and the lower end is and the bloated awl of lance tooth 6 couplings that circle is provided with the screw thread that is connected with washing pipe 7 in the bottom.As shown in Figure 2, lance tooth 6 has rib to separate, and lance tooth 6 lower end cylindricals are provided with the screw thread with anti-jack slips inner cone 9 couplings, the bloated awl coupling of circle and expand tube mandrel 2 in it.As shown in Figure 3, during work, the utility model connects the tubing string G.I.H to the top of fish of preventing pushing up the process pipe string of giving up, after routine starts cement pump truck flushing top of fish, transfers tubing string the lance tooth 6 of this instrument is docked with the salvaging screw thread of anti-jack slips inner cone 9 is identical.After the upper lifting pipe post confirmed that make-up drags for the jail, main story tubing string 10-15 circle, expand tube mandrel 2 were connected into button with top connection 1, baffle ring 4 is contacted with top connection 1, the supreme terminal point of anti-jack slips inner cone 9 uplink synchronizations, and anti-jack slips block teeth 8 are repositioned to complete release conditions.As shown in Figure 4, the unfreezing of operative activities this moment tubing string, anti-jack slips inner cone 9 is locked in terminal point, can not move down once more to open anti-jack slips block teeth 8, helps the anti-process pipe string deblocking unfreezing operation of giving up of pushing up.As repeatedly movable, to propose unfreezing on energetically invalid, when needing to implement the tubing string back-off and slipping out of the hand, because the upper end of expand tube mandrel 2 is equipped with back-up ring 3, guarantees that not from then on button is held in the junction, avoided top of fish complicated.
Claims (3)
1. lance is dragged in an anti-top locking, comprise top connection (1), expand tube mandrel (2), lance tooth (6) and washing pipe (7), lance tooth (6) is loaded on expand tube mandrel (2) outside, top connection (1), expand tube mandrel (2) and washing pipe (7) are connected successively, it is characterized in that between lance tooth (6) and top connection (1), being provided with hold-down mechanism, be provided with back-up ring (3) in the upper end of expand tube mandrel (2).
2. lance is dragged in a kind of anti-top locking according to claim 1, it is characterized in that hold-down mechanism comprises baffle ring (4) and compression spring (5), the round groove that is provided with cooperates with compression spring (5) in the bottom of baffle ring (4), will compress spring (5) and be installed between baffle ring (4) and the lance tooth (6).
3. lance is dragged in a kind of anti-top locking according to claim 1, it is characterized in that back-up ring (3) is installed in the mounting groove of expand tube mandrel (2) upper end, and the external diameter of back-up ring (3) is greater than the external diameter of expand tube mandrel (2), less than the internal diameter of top connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205493144U CN201778718U (en) | 2010-09-26 | 2010-09-26 | Anti-ejection locking fishing spear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205493144U CN201778718U (en) | 2010-09-26 | 2010-09-26 | Anti-ejection locking fishing spear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778718U true CN201778718U (en) | 2011-03-30 |
Family
ID=43791931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205493144U Expired - Fee Related CN201778718U (en) | 2010-09-26 | 2010-09-26 | Anti-ejection locking fishing spear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963643A (en) * | 2015-05-29 | 2015-10-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Corss-core fishing spear tool |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
-
2010
- 2010-09-26 CN CN2010205493144U patent/CN201778718U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963643A (en) * | 2015-05-29 | 2015-10-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Corss-core fishing spear tool |
| CN104963643B (en) * | 2015-05-29 | 2017-10-03 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of interior punching fishing spear instrument |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130926 |