CN202510075U - Guider die collar - Google Patents
Guider die collar Download PDFInfo
- Publication number
- CN202510075U CN202510075U CN2012201462220U CN201220146222U CN202510075U CN 202510075 U CN202510075 U CN 202510075U CN 2012201462220 U CN2012201462220 U CN 2012201462220U CN 201220146222 U CN201220146222 U CN 201220146222U CN 202510075 U CN202510075 U CN 202510075U
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- CN
- China
- Prior art keywords
- joint
- designed
- guider
- die collar
- tracing
- 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 fishing tool in operation of petrol work-over changing pipe, and particularly relates to a guider die collar. The guider die collar comprises a joint and a die collar body; a joint female thread is designed at the upper end of the joint; a center pipe is designed at the lower end of the joint; a guider male thread is designed at the lower end of the center pipe; circular water holes are formed at the centers of the joint and the center pipe; the outer side of the joint is connected to a die collar body by threads; and a fishing thread is designed on an inner conical surface of the die collar body. The guider die collar provided by the utility model is connected with a tracing tubular column, so as to prevent the tracing tubular column or a casing pipe fish top from being lost, and can be used for fishing irregular or damaged fish tops. The disadvantages that the conventional die collar is only connected with the bottom of a drill, and cannot be connected with the tracing tubular column, so that the tracing tubular column and the casing pipe fish top are lost can be overcome.
Description
Technical field:
The utility model relates to a kind of petroleum well workover and gets and change the fishing tool used of cover operation, particularly a kind of introduction female coupling tap.
Background technology:
At present, in the petroleum well workover operation, the cover method is bought or get by illegal means in commonly used getting to be spike tubing string method and once to overlap milling.Spike tubing string method: get the cover before in well, be lowered to suitable dimension drilling tool as the spike tubing string.Mill at cutting, cover, in the processes such as salvaging, back-off, the spike tubing string is applied in well head and the production string all the time, loses in bore hole to prevent top of fish.Conventional female coupling tap can only be connected the bottom of drilling tool, can not be connected with the spike tubing string, and spike tubing string and sleeve pipe top of fish are prone to lose.
The utility model content:
The technical problem that the utility model will solve provides a kind of introduction female coupling tap, and this device has been realized being connected with the spike tubing string, prevents that spike tubing string or sleeve pipe top of fish from losing, and can salvage irregular or damaged top of fish.Overcome the bottom that existing female coupling tap can only be connected drilling tool, can not be connected, the deficiency that spike tubing string and sleeve pipe top of fish are prone to lose with the spike tubing string.
The technical scheme that the utility model is taked is: a kind of introduction female coupling tap comprises joint and female coupling tap body; Upper end of joint is designed with the joint box thread; The joint lower end is designed with central tube, and the central tube lower end is designed with the introduction male thread, and joint and central tube center have the circulation hydrophthalmia; The joint outside is threaded with the female coupling tap body, is designed with the salvaging screw thread on the female coupling tap body inner conical surface.
The beneficial effect of the utility model is: the utility model is owing to adopted in the joint lower end and be designed with central tube, and the central tube lower end is designed with the mode of introduction male thread, thereby has with the spike tubing string and be connected, and prevents the function that spike tubing string or sleeve pipe top of fish are lost; Owing to adopted the joint outside to be threaded, be designed with the mode of salvaging screw thread on the female coupling tap body inner conical surface, thereby can salvage irregular or damaged top of fish with the female coupling tap body.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, a kind of introduction female coupling tap comprises joint 2 and female coupling tap body 3; Joint 2 upper ends are designed with joint box thread 1; Joint 2 lower ends are designed with central tube 5, and central tube 5 lower ends are designed with introduction male thread 7, and joint 2 has circulation hydrophthalmia 4 with central tube 5 centers; Joint 2 outsides are threaded with female coupling tap body 3, are designed with on female coupling tap body 3 inner conical surfaces to salvage screw thread 6.When former casing top of fish damaged, joint 2 upper ends of the utility model connected drilling tool, and central tube 5 lower ends are connected on the spike tubing string, carried out back-off and salvaged.
It is understandable that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (1)
1. an introduction female coupling tap comprises joint (2) and female coupling tap body (3); It is characterized in that: joint (2) upper end is designed with joint box thread (1); Joint (2) lower end is designed with central tube (5); Central tube (5) lower end is designed with introduction male thread (7); Joint (2) and central tube (5) center have circulation hydrophthalmia (4), and joint (2) outside is threaded with female coupling tap body (3), are designed with on female coupling tap body (3) inner conical surface and salvage screw thread (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201462220U CN202510075U (en) | 2012-03-31 | 2012-03-31 | Guider die collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201462220U CN202510075U (en) | 2012-03-31 | 2012-03-31 | Guider die collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510075U true CN202510075U (en) | 2012-10-31 |
Family
ID=47062567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201462220U Expired - Fee Related CN202510075U (en) | 2012-03-31 | 2012-03-31 | Guider die collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912231A (en) * | 2014-04-09 | 2014-07-09 | 中国石油化工股份有限公司 | Drill rod male-thread fisher |
-
2012
- 2012-03-31 CN CN2012201462220U patent/CN202510075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912231A (en) * | 2014-04-09 | 2014-07-09 | 中国石油化工股份有限公司 | Drill rod male-thread fisher |
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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: 20121031 Termination date: 20130331 |