CN207194859U - A kind of hydraulic returnable drags for lance - Google Patents
A kind of hydraulic returnable drags for lance Download PDFInfo
- Publication number
- CN207194859U CN207194859U CN201721153085.2U CN201721153085U CN207194859U CN 207194859 U CN207194859 U CN 207194859U CN 201721153085 U CN201721153085 U CN 201721153085U CN 207194859 U CN207194859 U CN 207194859U
- Authority
- CN
- China
- Prior art keywords
- fishing
- cylindrical
- lance
- bailer grab
- drags
- 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
Links
- 241001088417 Ammodytes americanus Species 0.000 title claims abstract description 22
- 230000000875 corresponding Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002441 reversible Effects 0.000 abstract 1
- 230000001629 suppression Effects 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005500 petroleum industry Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model is that a kind of hydraulic returnable drags for lance, the salvaging for trouble of lost tool in hole.This reversible, which drags for lance, includes top connection, fishing rod and bailer grab, the top of fishing rod is threadedly coupled with top connection, the body of rod bottom of fishing rod is provided with pressurizing port, body of rod lower end inner circle is threadedly coupled with fishing head, piston bush is threadedly coupled on the bottom of fishing rod is cylindrical, with bailer grab, and the bottom of bailer grab is fixed with fishing head by anti-rotation pin.Not only ensure that this instrument is reliable, effective fishing, at the same also ensure that it is reliable, effectively exit operation, avoid underground second accident, safe and practical property is strong, has significant using effect and application value.
Description
Technical field
The fishing tool of petroleum industry workover treatment is the utility model is related to, particularly a kind of hydraulic returnable drags for lance, uses
In the salvaging of trouble of lost tool in hole.
Background technology
It is a kind of special instrument salvaged the junk fallen into during underground work in well and stay well casing post to drag for lance.It is several improved
The lance that drags for afterwards is typically provided top connection, bailer grab and fishing rod, and conventional bailer grab bottom is claw-like structures, real by bailer grab
Existing fishing.Due to the reason such as the wellbore trajectory of oil-water well is irregular, hole angle is big, lifting load is larger, with dragging for for routine
Lance salvages fish, and when salvaging load is transfinited, it is difficult to exit in time, easily causing tubing string chance card can not be movable, in turn results in more
Add the secondary down-hole accident of complexity, extend the well workover cycle, add operating cost.
The content of the invention
The purpose of this utility model is aiming at above-mentioned weak point, there is provided a kind of hydraulic returnable drags for lance, makes it in pipe
When post meets card, by way of beating hydraulic pressure on ground bailer grab can be allowed to reclaim, fishing tool is exited in time, avoided secondary
Down-hole accident.
Technical solution of the present utility model is：A kind of hydraulic returnable, which drags for lance, includes top connection, fishing rod and salvaging
Pawl, the top of fishing rod are threadedly coupled with top connection, and the body of rod bottom of fishing rod is provided with pressurizing port, body of rod lower end inner circle with salvaging
Head thread is connected, and piston bush is threadedly coupled on the bottom of fishing rod is cylindrical, with bailer grab, and bottom and the fishing head of bailer grab lead to
Anti-rotation pin is crossed to fix.
Compared with existing fishing tool, remarkable result of the present utility model is：The utility model for existing fishing spear because
Lifting load can not normally exit greatly and produce the weak point of second accident, add hydraulic pressure exit function.Loaded when salvaging
Transfinite, fishing can not be realized by originally dragging for lance, can just suppressed into oil pipe on ground, high pressure by putting into the method for suppressing ball
Liquid stream is entered between fishing rod and piston and bailer grab upper body from pressurizing port in the closed ring cavity formed, forces piston band
Dynamic bailer grab is up, allows bailer grab to be withdrawn from junk, makes the smooth unfreezing of this instrument, exits, avoid underground second accident.
The utility model is simple in construction, reliable operation, bailer grab be connected with piston after, fishing head is fixed on by anti-rotation pin
Lower end.Bailer grab can not circumferentially rotate in normal fishing, and the salvaging tooth outside bailer grab can be close with junk
Note closes, and during upper lifting pipe post, bailer grab the more rises the more tight in junk, and its salvaging effect is good, effectively increases operating efficiency
And it is reusable, suitable for the fishing of straight well, high angle hole and horizontal well.It not only ensure that this instrument is reliable, effective
Fishing, while also ensure that it is reliable, effectively exit operation, avoid underground second accident, safe and practical property is strong, tool
There are significant using effect and application value.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 be Fig. 1 in A-A to cut-away view.
Embodiment
The utility model is described in detail below in conjunction with accompanying drawing, not limits the scope of protection of the utility model.It is as described below to be only
Preferred embodiment of the present utility model, other use equivalence changes of the present utility model, all should belong to protection of the present utility model
Scope.
Referring to Fig. 1 and Fig. 2, a kind of hydraulic returnable, which drags for lance, includes top connection 1, fishing rod 3 and bailer grab 5, fishing rod 3
Top is threadedly coupled with top connection 1, and the body of rod bottom of fishing rod 3 is provided with pressurizing port 6, body of rod lower end inner circle and the screw thread of fishing head 8
Connection, piston 4 be enclosed on fishing rod 3 bottom it is cylindrical it is upper, be threadedly coupled with bailer grab 5, bottom and the fishing head 8 of bailer grab 5 lead to
Anti-rotation pin 10 is crossed to fix.
The cylindrical bottom of the fishing rod 3 is cylindrical ladder, the structure of bottom inner circle and the cylindrical structure in the top of fishing head 8
It is engaged；Pressurizing port 6 is located at the cylindrical top of ladder of fishing rod 3, and piston 4 is enclosed on the cylindrical top body of rod of ladder, in piston 4
Inner circle and cylindrical and fishing rod 3 both ends it is cylindrical on be equipped with sealing ring 2, make fishing rod 3 bottom it is cylindrical with piston 4 and
Closed ring cavity is formed between the upper body of bailer grab 5, pressurizing port 6 is corresponding with the closed ring cavity.
The bottom of the fishing head 8 is cylindrical to be provided with male cone (strobilus masculinus), and the inner circle of fishing head 8 is ladder inner circle, top inner circle is small, under
Portion's inner circle is big, and inner circle upper end is engaged provided with interior chamfering with suppressing ball 7.
The upper body of the bailer grab 5 is that cylindrical body, lower body inwall are provided with inner conical surface, the inner conical surface and fishing head
8 male cone (strobilus masculinus) is corresponding, at least provided with three longitudinal contraction grooves in the lower body of bailer grab 5.In the lower body of bailer grab 5
The inner conical surface of wall is corresponding with the male cone (strobilus masculinus) of fishing head 8, works in coordination, during salvaging bailer grab 5 can be made the more to support the more big,
Frictional force between junk is increasing, and junk is realized and effectively salvaged.
The outer wall of the lower body of bailer grab 5, which is additionally provided with, salvages tooth 9, and the salvaging tooth 9 is acclivitous latch.
The anti-rotation pin 10 is fixed on fishing head 8, in the longitudinal contraction groove of the lower body of bailer grab 5.
Anti-rotation pin 10 above the fishing head 8 at least provided with one, can set two, three or more.
Specific operation, application method are as follows：
Normal fishing
Decentralization is originally dragged at lance to top of fish, and bailer grab 5 is adjacent to trouble of lost tool in hole inwall, and the lower body of bailer grab 5 is provided with longitudinal direction
Retraction slot, make lower body can be with opening and closing, its outer wall, which is provided with, salvages tooth 9, and inwall is additionally provided with inner conical surface.During upper lifting pipe post, above connect
First 1 drive fishing rod 3 and fishing head 8 move upwards, because bailer grab 5 is fixed on the lower end of fishing head 8, it is impossible to make circumferential move
It is dynamic, while the salvaging tooth 9 on bailer grab 5 is close to fish inwall again.When fishing head 8 moves upwards, its male cone (strobilus masculinus) is with salvaging
The inner conical surface of pawl 5 is adjacent to and bailer grab 5 the more is risen the more big, and the salvaging tooth 9 of bailer grab 5 is firmly clamped on the inwall of junk.After
Continuous upper lifting pipe post, top connection 1 drive fishing rod 3, fishing head 8, bailer grab 5, junk in well are proposed, realize and salvage.
Salvage load and exit operation when transfiniting
Transfinited when salvaging load, junk can not be proposed by originally dragging for lance, will be carried out exiting operation, avoided second accident.Now
Transfer down-hole string, top connection 1, fishing rod 3 and fishing head 8 also follow together with transfer, male cone (strobilus masculinus) and the bailer grab 5 of fishing head 8
Inner conical surface leave.
Into oil pipe, input suppresses ball 7, is just being suppressed with pump truck, and high pressure liquid stream is entered by piston 4 by pressurizing port 6, salvaged
In the closed ring cavity that bar 3 and the upper body of bailer grab 5 are formed, the pressure in closed ring cavity rises, and forces piston 4 and bailer grab 5
Move upwardly together, bailer grab 5 shrinks, and bailer grab 5 is adjacent to rubbing action releasing with trouble of lost tool in hole inwall, even if upper lifting pipe
Post, the male cone (strobilus masculinus) of fishing head 8 will not also contact with the inner conical surface of bailer grab 5, successfully will can originally drag for lance from trouble of lost tool in hole inner chamber
Middle taking-up, use other workover tool processing instead.
Claims (7)
1. a kind of hydraulic returnable drags for lance, including top connection, fishing rod and bailer grab, top and the top connection screw thread of fishing rod connect
Connect, it is characterized in that, the body of rod bottom of fishing rod is threadedly coupled provided with pressurizing port, body of rod lower end inner circle with fishing head, and piston bush exists
The bottom of fishing rod is cylindrical above, with bailer grab to be threadedly coupled, and the bottom of bailer grab is fixed with fishing head by anti-rotation pin.
2. a kind of hydraulic returnable as claimed in claim 1 drags for lance, it is characterized in that, the cylindrical bottom of the fishing rod is ladder
Cylindrical, bottom inner circle the structure structure cylindrical with fishing head top is engaged；Pressurizing port be located at fishing rod ladder it is cylindrical on
Side, piston bush are all provided with the cylindrical top body of rod of ladder on the inner circle of piston and cylindrical and fishing rod both ends are cylindrical
Have sealing ring, make the bottom of fishing rod is cylindrical to form closed ring cavity between piston and the upper body of bailer grab, pressurizing port with
The closed ring cavity is corresponding.
3. a kind of hydraulic returnable as claimed in claim 1 or 2 drags for lance, it is characterized in that, the bottom of the fishing head is cylindrical to be set
There is male cone (strobilus masculinus), the inner circle of fishing head is ladder inner circle, and top inner circle is small, bottom inner circle is big, and inner circle upper end is provided with interior chamfering and beaten
Pressure ball is engaged.
4. a kind of hydraulic returnable as claimed in claim 3 drags for lance, it is characterized in that, the upper body of the bailer grab is tubular
Body, lower body inwall are corresponding with the male cone (strobilus masculinus) of fishing head provided with inner conical surface, the inner conical surface, in the lower body of bailer grab
At least provided with three longitudinal contraction grooves.
5. a kind of hydraulic returnable as claimed in claim 4 drags for lance, it is characterized in that, the outer wall of the bailer grab lower body is also
Provided with tooth is salvaged, the salvaging tooth is acclivitous latch.
6. a kind of hydraulic returnable as claimed in claim 5 drags for lance, it is characterized in that, the anti-rotation pin is fixed on fishing head
Above, in the longitudinal contraction groove of bailer grab lower body.
7. a kind of hydraulic returnable as claimed in claim 6 drags for lance, it is characterized in that, the anti-rotation pin above the fishing head is extremely
One is provided with less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153085.2U CN207194859U (en) | 2017-09-11 | 2017-09-11 | A kind of hydraulic returnable drags for lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153085.2U CN207194859U (en) | 2017-09-11 | 2017-09-11 | A kind of hydraulic returnable drags for lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207194859U true CN207194859U (en) | 2018-04-06 |
Family
ID=61791681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721153085.2U Expired - Fee Related CN207194859U (en) | 2017-09-11 | 2017-09-11 | A kind of hydraulic returnable drags for lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207194859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083610A (en) * | 2018-09-21 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | Reversible fishing tap |
-
2017
- 2017-09-11 CN CN201721153085.2U patent/CN207194859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083610A (en) * | 2018-09-21 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | Reversible fishing tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20180911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |