CN203570220U - Safety joint for oil producing well - Google Patents
Safety joint for oil producing well Download PDFInfo
- Publication number
- CN203570220U CN203570220U CN201320788131.1U CN201320788131U CN203570220U CN 203570220 U CN203570220 U CN 203570220U CN 201320788131 U CN201320788131 U CN 201320788131U CN 203570220 U CN203570220 U CN 203570220U
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- CN
- China
- Prior art keywords
- safety joint
- joint
- oil producing
- well
- sand
- 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 an oil producing operation tool, in particular to a safety joint for an oil producing well. The safety joint has the technical scheme that the safety joint comprises an upper joint, a body and a lower joint, wherein the upper part of the body is connected with the upper joint, the lower part of the body is connected with the lower joint, ladder-shaped screw threads are arranged inside the body and are of conical structures, and the lower part of the ladder-shaped screw threads is connected with an annular groove. The safety joint for the oil producing well has the beneficial effects that the structure is simple, the operation is convenient, the safety joint belongs to a necessary tool for operation in the well, and the operation efficiency is effectively improved.
Description
Technical field
The utility model relates to a kind of oil producing operation instrument, particularly a kind of producing well safety joint.
Background technology
Safety joint is to be connected to a kind of security tool on tubing string in well, for operations such as drilling well, salvaging, well-flushing, well workover and tests.In the later development of oil field, sand control is the important measures that improve oil well output and stable oil well output, because oil well is more serious containing sand, sand-proof pipe is by sand plug, sand buries, losing sand control effect is recurrent thing, for making often well workover replacing sand-proof pipe of the normal production of oil well, in the process of changing sand-proof pipe, often run into sand card tubing string, make to change sand-proof pipe failure, must carry out workover, increase operating cost, for convenient, oil pipe more than sand-proof pipe is proposed, independent processing sand buries or sand card sand control pipe is all established a safety joint in the junction of sand-proof pipe and top oil pipe, under safe load, sand control pipe is proposed, under event of overload, pull off safety joint, top oil pipe is tripped out, reconditioned sand card sand control pipe.Existing safety joint is all pin shear-type, and the shortcoming of existence is that external diameter is large, and connecting hoop is large, and cover is washed inconvenience, and main is unfavorable to the disposable unfreezing of sand card tubing string, and the inconvenience of fishing sand-proof tubing string, affects normal oil producing operation.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of producing well safety joint is provided.
Its technical scheme is: comprise top connection, body, lower contact, body top connects top connection, and body bottom connects lower contact, and described body interior is provided with trapezoidal thread, described trapezoidal thread is pyramidal structure, described trapezoidal thread bottom connecting ring connected in star.
The beneficial effects of the utility model are: simple in structure, easy to operate, and be the indispensable instrument of operation in well, effectively improved operating efficiency.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
In upper figure: top connection 1, body 2, trapezoidal thread 3, lower contact 4, annular groove 5.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model comprises top connection 1, body 2, lower contact 4, body 2 tops connect top connection 1, and body 2 bottoms connect lower contact 4, and described body 1 inside is provided with trapezoidal thread 3, described trapezoidal thread 3 is pyramidal structure, the bottom connecting ring connected in star 5 of described trapezoidal thread 3.
Above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; As long as meet, use needs, all within protection domain of the present utility model.
Claims (1)
1. a producing well safety joint, it is characterized in that: comprise top connection (1), body (2), lower contact (4), body (2) top connects top connection (1), body (2) bottom connects lower contact (4), described body (1) inside is provided with trapezoidal thread (3), described trapezoidal thread (3) is pyramidal structure, the bottom connecting ring connected in star (5) of described trapezoidal thread (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788131.1U CN203570220U (en) | 2013-12-04 | 2013-12-04 | Safety joint for oil producing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320788131.1U CN203570220U (en) | 2013-12-04 | 2013-12-04 | Safety joint for oil producing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570220U true CN203570220U (en) | 2014-04-30 |
Family
ID=50537954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320788131.1U Expired - Fee Related CN203570220U (en) | 2013-12-04 | 2013-12-04 | Safety joint for oil producing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570220U (en) |
-
2013
- 2013-12-04 CN CN201320788131.1U patent/CN203570220U/en not_active Expired - Fee Related
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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: 20140430 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |