CN202731807U - Downhole fishing tool - Google Patents
Downhole fishing tool Download PDFInfo
- Publication number
- CN202731807U CN202731807U CN 201220357176 CN201220357176U CN202731807U CN 202731807 U CN202731807 U CN 202731807U CN 201220357176 CN201220357176 CN 201220357176 CN 201220357176 U CN201220357176 U CN 201220357176U CN 202731807 U CN202731807 U CN 202731807U
- Authority
- CN
- China
- Prior art keywords
- fish
- mandrel
- slip
- fishing tool
- axle
- 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
The utility model relates to a downhole fishing tool, and belongs to the technical field of downhole fishing operation tools for petroleum engineering. The fishing tool comprises a mandrel and a heavy punch, wherein the upper end of the mandrel is columnar; a central through hole is formed inside the mandrel; the upper end of a columnar body is a joint; the middle part of the columnar body is a cone cylinder; a guide rail groove is formed in the outer pipe wall; a guiding shoe is arranged at the lower end; the heavy punch is cylindrical; a through hole is formed inside the heavy punch; the cone cylinder at the middle part of the mandrel is sleeved with a tubular slip; a guide rail key matched with the guide rail groove of the mandrel is arranged on the inner pipe wall of the slip; and a latch is arranged on the outer pipe wall of the slip. The fishing tool has the benefits that the slip is punched into annular space between the fish and the mandrel and compacted under the action of the gravity of the heavy punch; in the lifting process of the mandrel, the external diameter of the slip is gradually increased and the slip blocks the fish tightly in order to fish out the fish from the well. If the fish cannot be taken out, the fish can be further detached by pushing and turning the drilling tool, so as to prevent complication of the downhole accident.
Description
Technical field
The utility model relates to a kind of underground fishing tool, belongs to petroleum works down-hole fish fishing technical field of tools.
Background technology
In oil-water well production or well workover process, because a variety of causes causes oil pipe or drilling rod to fall in the well.Existing underground fishing tool kind is a lot, mainly is by fish being introduced the method in the fishing socket, being needed first fish to be carried out milling, complex procedures.Be mainly blue shape slips fishing spear about down-hole column junk endoporus fishing tool, formed by salvaging main body, blue shape slips, guide shoe, meet the small-bore tubing string and can't salvage, if after dwindling in proportion, the salvaging main diameter is undersized, causes the intensity of salvaging main body can't satisfy the small-bore and salvages requirement.ZL201020520977.3 discloses a kind of oilfield down-hole salvager, formed by top connection, connecting axle, fishing spear body, the top stationary slip of the leading cone of fishing spear body, the bottom of leading cone is provided with lock dog, because the size of stationary slip is relatively fixing, be difficult to salvage oil pipe or the drilling rod of different size; Can't pull out in well if fish is stuck, because of the difficulty of slipping out of the hand, cause the down-hole situation complicated.
Summary of the invention
In order to overcome the technological deficiency problem of existing fishing tool, the utility model provide a kind of simple in structure, with low cost, operation is convenient, the good fishing tool of result of use, the fish that can salvage down-hole various sizes hydrophthalmia fully.
The utility model is a kind of underground fishing tool, and a kind of underground fishing tool comprises axle and weight, it is characterized in that: the axle upper end is column, and there is central through hole inside, and the column upper end is joint, the middle part has guide-track groove for the cone cylinder on the outer tube wall, the lower end is guide shoe; Weight is cylinder, and inside has through hole; Cone cylinder at axle middle part is arranged with slips, and slips is tubular body, and its inner tubal wall is provided with the guide rail key that matches with guide-track groove on the axle, and outer tube wall is provided with latch.
The beneficial effects of the utility model are: the Action of Gravity Field that utilizes weight is pounded the annular space between fish and the axle with slips and is compressed, and carries in the process in axle, and the external diameter of slips increases gradually and tightens fish to be pulled it out from the down-hole.If fish can not be taken out, can also by press down, rotation drilling tool is thrown off fish, prevents the complicated of down-hole accident.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is to comprise axle 1 and weight 2 as shown in Figure 1; Axle 1 upper end is column, and there is central through hole inside, and the column upper end is joint, and the middle part has guide-track groove for the cone cylinder on the outer tube wall, and the lower end is guide shoe; Weight 2 is cylinder, and inside has through hole, and weight 2 is inserted on the axle 1 by the through hole of inside; Cone cylinder at axle 1 middle part is arranged with slips 3, and slips 3 is tubular body, and its inner tubal wall is provided with the guide rail key that matches with guide-track groove on the axle 1, and outer tube wall is provided with latch.
In the fishing process, axle 1 upper end links to each other with running string by joint, and it is inner to import fish by the guide shoe of axle 1, and weight 2 is by the well head G.I.H, and under Action of Gravity Field, hammering slips 3 is pounded annular space and compression between fish and the axle 1 with slips 3.In worrying axle 1 process, slips 3 slides along the cone cylinder of guide-track groove at axle 1 middle part of axle 1, the external diameter of slips 3 is swollen gradually and blocks the fish inwall, fish can be pulled out.The external diameter of slips 3 is transformable, therefore, can satisfy the salvaging requirement of different size fish.Can't pull out in well if fish is stuck, can press down, rotation drilling tool, make the utility model throw off fish.
Claims (1)
1. a underground fishing tool comprises axle (1) and weight (2), it is characterized in that: axle (1) upper end is column, and there is central through hole inside, and the column upper end is joint, and the middle part has guide-track groove for the cone cylinder on the outer tube wall, and the lower end is guide shoe; Weight (2) is cylinder, and inside has through hole; Cone cylinder at axle (1) middle part is arranged with slips (3), and slips (3) is tubular body, and its inner tubal wall is provided with the guide rail key that matches with guide-track groove on the axle (1), and outer tube wall is provided with latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220357176 CN202731807U (en) | 2012-07-23 | 2012-07-23 | Downhole fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220357176 CN202731807U (en) | 2012-07-23 | 2012-07-23 | Downhole fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731807U true CN202731807U (en) | 2013-02-13 |
Family
ID=47657519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220357176 Expired - Fee Related CN202731807U (en) | 2012-07-23 | 2012-07-23 | Downhole fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368641A (en) * | 2015-12-07 | 2017-02-01 | 关英 | Deep well water tube fishing device |
| CN109138889A (en) * | 2018-09-26 | 2019-01-04 | 华蓥市铜堡初级中学 | fishing device for oil well |
-
2012
- 2012-07-23 CN CN 201220357176 patent/CN202731807U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368641A (en) * | 2015-12-07 | 2017-02-01 | 关英 | Deep well water tube fishing device |
| CN109138889A (en) * | 2018-09-26 | 2019-01-04 | 华蓥市铜堡初级中学 | fishing device for oil well |
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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: 20130213 Termination date: 20130723 |