CN206928935U - A kind of Novel down-hole instrument for preventing gas backstreaming - Google Patents
A kind of Novel down-hole instrument for preventing gas backstreaming Download PDFInfo
- Publication number
- CN206928935U CN206928935U CN201720354392.0U CN201720354392U CN206928935U CN 206928935 U CN206928935 U CN 206928935U CN 201720354392 U CN201720354392 U CN 201720354392U CN 206928935 U CN206928935 U CN 206928935U
- Authority
- CN
- China
- Prior art keywords
- air
- inner cylinder
- outer barrel
- valve shaft
- upper shell
- 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 is related to it is a kind of be used for petroleum drilling operation in a kind of Novel down-hole instrument for preventing gas backstreaming, with solve solve during air drilling, caused air return when compressed air is unstable, cutting carring cause drill string pollute and block situation.Its technical scheme is：Upper shell is connected with lower house by screw thread；There are packing ring and air intake on outer barrel, and sealed between outer barrel and upper shell using packing ring, air intake is that air enters unique passage；Runner is provided with inner cylinder, has spring and valve shaft inside inner cylinder, and spring is placed between inner cylinder and valve shaft.The utility model can stability contorting air enter, and stop air supply when, effectively prevent air return.
Description
Technical field
It the utility model is related to a kind of be used in the fields such as oil-gas drilling engineering, mining, geological drilling
A kind of Novel down-hole instrument for preventing gas backstreaming.
Background technology
As the preferable Shallow Oil-Gas resource of preservation is increasingly exhausted, drilling engineering is gradually to the environment bar such as deep-well, ultradeep well
The severe field development of part.Air drilling mode is progressively used in existing drilling well, using air drilling during, with
Compressed air pressure is not necessarily stablized, and air bit lower air can be caused to be back in drill string, causes landwaste to pollute and block.
The content of the invention
The purpose of this utility model is：It is caused when compressed air is unstable in order to solve during air drilling
Air return, cutting carring cause drill string to pollute and block.
To achieve the above object, the utility model uses following technical scheme：
A kind of Novel down-hole instrument for preventing gas backstreaming, by upper shell（1）, air intake（2）, packing ring（3）, runner
（4）, inner cylinder（5）, outer barrel（6）, spring（7）, valve shaft（8）, lower house（9）Composition, it is characterised in that：Upper shell（1）With lower casing
Body（9）It is connected by screw thread；Outer barrel（6）On have packing ring（3）And air intake（2）, and outer barrel（6）With upper shell（1）Between
Using packing ring（3）Sealed, air intake（2）Enter unique passage for air；Inner cylinder（5）On be provided with runner（4）, inner cylinder
（5）There is spring inside（7）And valve shaft（8）, and spring（7）It is placed in inner cylinder（5）And valve shaft（8）Between；Described runner（4）
For 4 symmetrical runners；Described outer barrel（6）Bottom is provided with manhole；The inner cylinder（5）Bottom is provided with manhole.
The beneficial effects of the utility model are：（1）The instrument effectively can control air to enter by single air intake
Enter；（2）The valve shaft and spring that open up are simpler conveniently to prevent air return.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the Novel down-hole instrument for preventing gas backstreaming of the utility model；
In figure：1. upper shell, 2. air intakes, 3. packing rings, 4. runners, 5. inner cylinders, 6. outer barrels, 7. springs, 8. valve shafts, 9.
Lower house.Fig. 2 is the utility model Fig. 1 fluid stopping views；
In figure：1. upper shell, 2. air intakes, 3. packing rings, 4. runners, 5. inner cylinders, 6. outer barrels, 7. springs, 8. valve shafts, 9.
Lower house.Fig. 3 is A-A profiles in the utility model Fig. 1；
In figure：1. upper shell, 4. runners, 5. inner cylinders, 6. outer barrels, 8. valve shafts.
Embodiment
With reference to the accompanying drawings 1, shown in Fig. 3, the Novel down-hole speed change tool of stable output power function, upper shell can be achieved（1）、
Air intake（2）, packing ring（3）, runner（4）, inner cylinder（5）, outer barrel（6）, spring（7）, valve shaft（8）, lower house（9）Composition, its
It is characterised by：Upper shell（1）With lower house（9）It is connected by screw thread；Outer barrel（6）On have packing ring（3）And air intake（2）, and
And outer barrel（6）With upper shell（1）Between use packing ring（3）Sealed, air intake（2）Enter unique passage for air；It is interior
Cylinder（5）On be provided with 4 symmetrical runners（4）, inner cylinder（5）There is spring inside（7）And valve shaft（8）, and spring（7）In being placed in
Cylinder（5）And valve shaft（8）Between, during work, as shown in figure 1, compressed air is from air intake（2）Into acting directly on valve shaft
（8）On, promote spring（7）Compression, so that valve shaft（8）Certain distance is moved downward, as shown in figure 3, compressed air passes through stream
Road（4）Flow into inner cylinder（5）And outer barrel（6）Between, then flow into lower house（9）Middle runner outflow, when compressed air stops flow into
When, as shown in Fig. 2 due to air intake（2）There is no the entrance of compressed air, lower house（9）Part residual air backflow be present,
Now spring（7）Recover former long, force valve shaft（8）Motion heads into air intake upwards（2）, seal air intake（2）And runner
（4）Between passage, realize the effect of anti-backflow.
Claims (4)
- A kind of 1. Novel down-hole instrument for preventing gas backstreaming, by upper shell（1）, air intake（2）, packing ring（3）, runner（4）、 Inner cylinder（5）, outer barrel（6）, spring（7）, valve shaft（8）, lower house（9）Composition, it is characterised in that：Upper shell（1）With lower house（9） It is connected by screw thread；Outer barrel（6）On have packing ring（3）And air intake（2）, and outer barrel（6）With upper shell（1）Between using pad Circle（3）Sealed, air intake（2）Enter unique passage for air；Inner cylinder（5）On be provided with runner（4）, inner cylinder（5）It is internal There is spring（7）And valve shaft（8）, and spring（7）It is placed in inner cylinder（5）And valve shaft（8）Between.
- A kind of 2. Novel down-hole instrument for preventing gas backstreaming according to claim 1, it is characterised in that：Described runner （4）For 4 symmetrical runners.
- A kind of 3. Novel down-hole instrument for preventing gas backstreaming according to claim 1, it is characterised in that：Described outer barrel （6）Bottom is provided with manhole.
- A kind of 4. Novel down-hole instrument for preventing gas backstreaming according to claim 1, it is characterised in that：The inner cylinder （5）Bottom is provided with manhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720354392.0U CN206928935U (en) | 2017-04-06 | 2017-04-06 | A kind of Novel down-hole instrument for preventing gas backstreaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720354392.0U CN206928935U (en) | 2017-04-06 | 2017-04-06 | A kind of Novel down-hole instrument for preventing gas backstreaming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206928935U true CN206928935U (en) | 2018-01-26 |
Family
ID=61349900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720354392.0U Expired - Fee Related CN206928935U (en) | 2017-04-06 | 2017-04-06 | A kind of Novel down-hole instrument for preventing gas backstreaming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206928935U (en) |
-
2017
- 2017-04-06 CN CN201720354392.0U patent/CN206928935U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180126 Termination date: 20180406 |