CN106468159A - Silicon nitride ceramics sand screen - Google Patents
Silicon nitride ceramics sand screen Download PDFInfo
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- CN106468159A CN106468159A CN201510520614.7A CN201510520614A CN106468159A CN 106468159 A CN106468159 A CN 106468159A CN 201510520614 A CN201510520614 A CN 201510520614A CN 106468159 A CN106468159 A CN 106468159A
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- silicon nitride
- nitride ceramics
- central canal
- ring
- sand screen
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Abstract
The invention discloses silicon nitride ceramics sand screen, including central canal, silicon nitride ceramics ring, described central canal is set with multiple silicon nitride ceramics rings successively side by side and central canal opens up uniform radial direction through hole in the position of suit silicon nitride ceramics ring.The internal diameter radial thickness of described silicon nitride ceramics ring be less than external diameter radial thickness, that is, the cross section of this ceramic ring be similar to trapezoidal.Described silicon nitride ceramics ring axial direction both ends of the surface are provided with boss.The overall axial direction two ends of the described silicon nitride ceramics ring being sleeved on central canal are provided with the pressure cap being equally sleeved on central canal, respectively upper pressing cap and lower pressing cap.Setting welding set between described pressure cap and central canal, welding set is welded on central canal, and then pressure cap is screwed in welding set outer wall clamping silicon nitride ceramics ring by way of screw thread.The present invention can effectively prevent washing away of down-hole high temperature sand liquid, greatly extends the sand control life of thick oil thermal extraction, reduces operating cost, improves whole development effect.
Description
Technical field
The present invention relates to the viscous crude sand control screen of oil exploitation；Specifically silicon nitride ceramics sand screen.
Background technology
With the further exploration and development of oil field loose sand oil accumulation, oil reservoir verifies grade worse and worse, viscous crude sand proof well mesh
The screen casing of front application typically adopts stainless steel material, and many rounds ethmoid canal,posterior of handling up is easily pierced and affect opening of thick oil thermal extraction
Send out effect.Silicon nitride Si3N4 pottery is a kind of covalent key compound, as the application such as Industrial Metal bearing, steam jet.
Have lightweight and rigidity is big, deflection is little, high temperature resistant, anticorrosive, resistance to erosion the features such as, be applied to viscous crude sand screen
Pipe can effectively solving viscous crude sand control a difficult problem.
Content of the invention
It is an object of the invention to provide silicon nitride ceramics sand screen, can effectively prevent washing away of down-hole high temperature sand liquid, greatly
Ground extends the sand control life of thick oil thermal extraction, reduces operating cost, improves whole development effect.
In order to reach above-mentioned purpose, present invention employs following technical scheme, silicon nitride ceramics sand screen, including central canal,
Silicon nitride ceramics ring, described central canal is set with multiple silicon nitride ceramics rings successively side by side and central canal is in suit silicon nitride
The position of ceramic ring opens up uniform radial direction through hole.
The internal diameter radial thickness of described silicon nitride ceramics ring is less than external diameter radial thickness, and that is, the cross section of this ceramic ring is similar to ladder
Shape.
Described silicon nitride ceramics ring axial direction both ends of the surface are provided with boss.
The overall axial direction two ends of the described silicon nitride ceramics ring being sleeved on central canal are provided with and are equally sleeved on central canal
Pressure cap, respectively upper pressing cap and lower pressing cap.
Setting welding set between described pressure cap and central canal, welding set is welded on central canal, and then pressure cap passes through screw thread
Mode is screwed in welding set outer wall clamping silicon nitride ceramics ring.
Uniform welding 6-8 root rib between described central canal, silicon nitride ceramics ring.
Described central canal upper end connects top connection.
Compared to prior art, the invention has the advantages that：
By the gap of ceramic ring, the equal cloth hole through central canal flows in sand screen oil stream, and gravel etc. is blocked in sand screen
Outward, reach the purpose of sand control production.This invention has can effectively prevent washing away of down-hole high temperature sand liquid, greatly extend thick
The sand control life of oily thermal production well, reduce operating cost, improve whole development effect.
Brief description
Fig. 1 is the structural representation of the silicon nitride ceramics sand screen of the present invention；
Fig. 2 is the side view of silicon nitride ceramics ring；
Fig. 3 is the front view of silicon nitride ceramics ring.
In figure：Top connection 1, central canal 2, upper welding set 3, upper pressing cap 4, silicon nitride ceramics ring 5, lower pressing cap 6,
Lower welding set 7, rib 8, inlet opening 9, boss 10.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation brief description is as follows, but accompanying drawing only provides with reference to and says
Bright be used, be not used for the present invention is any limitation as.
According to Fig. 1-3, silicon nitride ceramics sand screen, including central canal 2, silicon nitride ceramics ring 5, on described central canal according to
Secondary arranged side by side be set with multiple silicon nitride ceramics rings and central canal and open up uniform radial direction in the position of suit silicon nitride ceramics ring lead to
Hole 9.The internal diameter radial thickness of described silicon nitride ceramics ring is less than external diameter radial thickness, and that is, the cross section of this ceramic ring is similar to ladder
Shape.Described silicon nitride ceramics ring axial direction both ends of the surface are provided with boss 10.The described silicon nitride ceramics ring being sleeved on central canal
Overall axial direction two ends be provided with the pressure cap being equally sleeved on central canal, respectively upper pressing cap 4 and lower pressing cap 6.Described pressure
Setting welding set between cap and central canal, is divided into welding set 3, lower welding set 7, and welding set is welded on central canal, so
Rear pressing cap is screwed in welding set outer wall clamping silicon nitride ceramics ring by way of screw thread.Described central canal, silicon nitride ceramics ring
Between uniform welding 6-8 root rib 8.Described central canal upper end connects top connection 1.
The position circumference installing ceramic ring 5 on central canal 2 is provided with uniform hole 9, provides passage for oil stream, and uniformly welds
Connect 6-8 root rib 8, be easy to release the viscous crude between ceramic ring 5 and central canal 2 gap；Ceramic ring 5 is that end face is trapezoidal
Multiple annular rings, and requirement two sides design boss 10, the utilization about each annular ring according to different sand screen pipe sizes
Gas Pressure Sintered Silicon Nitride is processed at a temperature of 1～10MPa air pressure, 2000 DEG C about.
During installation, ceramic ring is enclosed within central canal, after welding the externally threaded upper welding set 3 of band and lower welding set 7, by upper pressure
Cap 4 and lower pressing cap 6 complete silicon nitride ceramics sand screen with upper welding set 3 and lower welding set 7 corresponding threaded compressions
Assembling.In production process, by the gap of ceramic ring 5, the equal cloth hole 9 through central canal 2 flows in sand screen oil stream, and
Gravel etc. is blocked in outside sand screen, reaches the purpose of sand control production.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use this
The equivalence changes of bright patent spirit, all should all belong to the scope of the claims of the present invention.
Claims (7)
1. silicon nitride ceramics sand screen, it is characterised in that including central canal, silicon nitride ceramics ring, described central canal is set with multiple silicon nitride ceramics rings successively side by side and central canal opens up uniform radial direction through hole in the position of suit silicon nitride ceramics ring.
2. silicon nitride ceramics sand screen according to claim 1 it is characterised in that described silicon nitride ceramics ring internal diameter radial thickness be less than external diameter radial thickness, that is, the cross section of this ceramic ring be similar to trapezoidal.
3. silicon nitride ceramics sand screen according to claim 1 and 2 is it is characterised in that described silicon nitride ceramics ring axial direction both ends of the surface are provided with boss.
4. silicon nitride ceramics sand screen according to claim 1 is it is characterised in that the overall axial direction two ends of the described silicon nitride ceramics ring being sleeved on central canal are provided with the pressure cap being equally sleeved on central canal, respectively upper pressing cap and lower pressing cap.
5. it is characterised in that arranging welding set between described pressure cap and central canal, welding set is welded on central canal silicon nitride ceramics sand screen according to claim 4, and then pressure cap is screwed in weld by way of screw thread and covers outer wall clamping silicon nitride ceramics ring.
6. silicon nitride ceramics sand screen according to claim 1 is it is characterised in that uniform welding 6-8 root rib between described central canal, silicon nitride ceramics ring.
7. silicon nitride ceramics sand screen according to claim 1 is it is characterised in that described central canal upper end connects top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520614.7A CN106468159A (en) | 2015-08-21 | 2015-08-21 | Silicon nitride ceramics sand screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520614.7A CN106468159A (en) | 2015-08-21 | 2015-08-21 | Silicon nitride ceramics sand screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106468159A true CN106468159A (en) | 2017-03-01 |
Family
ID=58229291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510520614.7A Pending CN106468159A (en) | 2015-08-21 | 2015-08-21 | Silicon nitride ceramics sand screen |
Country Status (1)
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| CN (1) | CN106468159A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952640A (en) * | 2018-07-09 | 2018-12-07 | 中国石油天然气股份有限公司 | Filtering sand apparatus and tubing string |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| WO2023091890A1 (en) * | 2021-11-19 | 2023-05-25 | Baker Hughes Oilfield Operations Llc | Borehole tool and system |
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|---|---|---|---|---|
| CN108952640A (en) * | 2018-07-09 | 2018-12-07 | 中国石油天然气股份有限公司 | Filtering sand apparatus and tubing string |
| CN108952640B (en) * | 2018-07-09 | 2021-01-01 | 中国石油天然气股份有限公司 | Sand filtering device and tubular column |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| WO2023091890A1 (en) * | 2021-11-19 | 2023-05-25 | Baker Hughes Oilfield Operations Llc | Borehole tool and system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170301 |