CN204371231U - A kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development - Google Patents
A kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development Download PDFInfo
- Publication number
- CN204371231U CN204371231U CN201420865947.4U CN201420865947U CN204371231U CN 204371231 U CN204371231 U CN 204371231U CN 201420865947 U CN201420865947 U CN 201420865947U CN 204371231 U CN204371231 U CN 204371231U
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- China
- Prior art keywords
- tile
- sliding sleeve
- ball seat
- sheath
- ball
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, solve the problem that existing sliding sleeve pressure-conducting valve ball seat tile can not scatter sometimes.Specifically comprise top connection, sliding sleeve, urceolus, ball seat tile, tile sheath and lower contact, sliding sleeve is placed in top connection, therebetween shear pin is set, top connection sidewall below shear pin also arranges inlet opening, the below hanging over sliding sleeve suitable for reading of ball seat tile, tile sheath is sitting in lower contact, and the end opening of ball seat tile is enclosed within tile sheath, the soffit of described ball seat tile inner convex platform is inclined-plane, and the upper surface of tile sheath is hemisphere face.Because when ball seat tile is sitting on tile sheath, the two is linear contact lay, and contact area is little, so ball seat tile is easy to scatter, steel ball can not be trapped in valve body, guarantees the pressure break operation of carrying out smoothly below.
Description
Technical field
The utility model relates to a kind of sliding sleeve pressure-conducting valve used in Oil/gas Well fixed tubular column separate stratum fracfturing construction.
Background technology
Sliding sleeve pressure-conducting valve has the function of sliding sleeve and pilot simultaneously, forms process duct string with packer, ensures the reliably setting of lower packer, will two-layerly up and down separate.During specific works, steel ball falls on the ball seat tile that sliding sleeve pressure-conducting valve is connected with sliding sleeve, when after pressurization, cuts off pin, and ball seat tile drives sliding sleeve to move down, and opens fluid hole, opens oil jacket communicating passage.When sliding sleeve is along with after ball seat tile is moved down into certain position together, ball seat tile scatters, and makes valve body by enlarged-diameter, and the steel ball be located on ball seat tile freely can drop to tubing string bottom by valve body.
The patent No. is the sliding sleeve pressure-conducting valve of 200520078870.7, soffit due to ball seat tile internal boss is plane, and the upper surface of tile sheath is also plane, when ball seat tile be moved down into its inner convex platform be sitting in tile sheath upper surface time, ball seat tile is subject to the Action of Gravity Field of pressure and sliding sleeve and the steel ball pressurizeed above, and tile sheath has support force vertically upward to ball seat tile, the downward active force that ball seat tile is subject to scatters when being greater than support force, find in actual use, because ball seat tile inner convex platform and tile sheath are that face contacts, the support force of tile sheath to ball seat tile is large, and the downward active force that ball seat tile is subject to is fixing, so, ball seat tile be not easy to scatter sometimes.If ball seat tile can not scatter in time, cannot be setting by the packer in the middle of when causing upper strata pressure break, form combined pressure, great possibility is that pressure break sand all enters lower floor, causes serious pressure break accident.
Summary of the invention
For Problems existing in background technology, the utility model provides a kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, in this sliding sleeve pressure-conducting valve, ball relieving mechanism can ensure that ball seat tile scatters in time, thus guarantee the reliably setting of lower packer, avoid the generation of pressure break accident further.
For achieving the above object, the technical solution adopted in the utility model is: a kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, comprise top connection, sliding sleeve, urceolus, ball seat tile, tile sheath and lower contact, urceolus is threaded respectively with top connection and lower contact, sliding sleeve is placed in top connection, therebetween shear pin is set, top connection sidewall below shear pin also arranges inlet opening, the bottom of sliding sleeve arranges mounting part, the below hanging over sliding sleeve suitable for reading of ball seat tile, tile sheath is sitting in lower contact, the end opening of ball seat tile is enclosed within tile sheath, it is characterized in that: the soffit of described ball seat tile inner convex platform is inclined-plane, the upper surface of tile sheath is hemisphere face.
The beneficial effects of the utility model: the application for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, when ball seat tile is sitting on tile sheath, the two is linear contact lay, contact area is little, ball seat tile is easy to scatter, so steel ball can not be trapped in valve body, guarantee the reliably setting of lower packer, carry out pressure break operation below smoothly.
Accompanying drawing explanation
Fig. 1 is the structural representation for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1: a kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, comprise top connection 1, sliding sleeve 4, urceolus 9, ball seat tile 6, tile sheath 10 and lower contact 11, the upper lower interface of urceolus 9 is threaded respectively with top connection 1 and lower contact 11, sliding sleeve 4 is placed in top connection 11, shear pin 2 is set therebetween, top connection 1 sidewall of shear pin less than 2 also arranges inlet opening 3, the bottom of sliding sleeve 4 arranges mounting part, the below hanging over sliding sleeve 4 suitable for reading of ball seat tile 6, tile sheath 10 is sitting in lower contact 11, the end opening of ball seat tile 6 is enclosed within tile sheath 10, the soffit 7 of described ball seat tile 6 inner convex platform is inclined-plane, the upper surface 8 of tile sheath 10 is hemisphere face.
During construction usage, the steel ball 5 of a suitable specification is thrown in by the import department of well head pipeline, steel ball 5 fall be sitting in ball seat tile 6 suitable for reading in, pressurizeed by ground pressure equipment again, and rely on fluid pressure, steel ball 5 cuts off shear pin 2 under the effect of highly pressurised liquid, the related ball seat tile 6 of sliding sleeve 4 and steel ball 5 glide, when the end opening of sliding sleeve 4 is slipped to the below of inlet opening 3, be communicated with gas-bearing formation section, sliding sleeve 4 continues to glide, ball seat tile 6 is sitting on tile sheath 10, ball seat tile 6 scatters under downward active force and support force effect upwards, steel ball 5 falls along the endoporus of tile sheath 10, underground pipelines in conducting, carry out working procedure below smoothly.
Claims (1)
1. one kind for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development, comprise top connection, sliding sleeve, urceolus, ball seat tile, tile sheath and lower contact, urceolus is threaded respectively with top connection and lower contact, sliding sleeve is placed in top connection, therebetween shear pin is set, top connection sidewall below shear pin also arranges inlet opening, the bottom of sliding sleeve arranges mounting part, the below hanging over sliding sleeve suitable for reading of ball seat tile, tile sheath is sitting in lower contact, the end opening of ball seat tile is enclosed within tile sheath, it is characterized in that: the soffit of described ball seat tile inner convex platform is inclined-plane, the upper surface of tile sheath is hemisphere face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865947.4U CN204371231U (en) | 2014-12-30 | 2014-12-30 | A kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865947.4U CN204371231U (en) | 2014-12-30 | 2014-12-30 | A kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371231U true CN204371231U (en) | 2015-06-03 |
Family
ID=53327460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420865947.4U Expired - Fee Related CN204371231U (en) | 2014-12-30 | 2014-12-30 | A kind of for ball relieving mechanism in the sliding sleeve pressure-conducting valve in oil-gas field development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371231U (en) |
-
2014
- 2014-12-30 CN CN201420865947.4U patent/CN204371231U/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: 20150603 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |