CN202325436U - Anti-blocking sand filter pipe of oil well - Google Patents
Anti-blocking sand filter pipe of oil well Download PDFInfo
- Publication number
- CN202325436U CN202325436U CN2011204160228U CN201120416022U CN202325436U CN 202325436 U CN202325436 U CN 202325436U CN 2011204160228 U CN2011204160228 U CN 2011204160228U CN 201120416022 U CN201120416022 U CN 201120416022U CN 202325436 U CN202325436 U CN 202325436U
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- sand
- blocking
- oil well
- corundum
- well
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Abstract
The utility model relates to an anti-blocking sand filter pipe of an oil well, which is used for sand prevention of the oil well and can be applied on a high-inclination well. The anti-blocking sand filter pipe comprises a central base pipe, wherein the central base pipe is provided with liquid flowing holes, and is externally provided with a corundum sand blocking layer and an outer protecting sleeve; and the two ends of the corundum sand blocking layer and the outer protecting sleeve are fixed by supporting rings. The corundum sand blocking layer with high strength, small porosity, difficulty in impurity absorption and good anti-blocking performance is selected, and the outer protecting sleeve is added outside the corundum sand blocking layer to play a good role in protecting the corundum sand blocking layer. The anti-blocking sand filter pipe has the characteristics of strong anti-blocking capability, difficulty in breaking and capability of falling into the inclined well, and can effectively guarantee the productivity of the oil well after sand prevention. The anti-blocking sand filter pipe has the advantages that the difficulties that the yield is reduced due to oil-well blocking after mechanical sand prevention, the chemical sand prevention also cannot achieve the purpose and a resin sand filter pipe in the inclined well cannot fall are solved, so that the sand laying in the well is reduced. Proved by production experiments, the anti-blocking sand filter pipe also has the advantages that the sand prevention is reliable, the anti-blocking capability is strong, the sand preventing effect is good, the productivity of the oil well and the sand-preventing valid period can be effectively improved, and the application prospect is better.
Description
Technical field
The utility model relates to the down-hole sand preventing tool of petroleum industry, and particularly a kind of oil well anti-clogging sand screen is used for sand control, can on high angle hole, use.
Background technology
Hide at middle and high oil impregnate, the major measure that is used for sand control has technologies such as fracturing sand control, filling anti-sand, sand screen sand control, chemical sand control and composite sand prevention, has satisfied the sand control requirement of oil well basically.But also there are some problems in the instrument of above-mentioned sand-preventing process, mainly are: 1, the success rate height of going into the well of mechanical sand control, but efficient low, be prone to result in blockage fall and produce not even output.According to ASSOCIATE STATISTICS, filling anti-sand is efficient about 60%, and metal filter sand control is efficient about 40%.2, limited by hole condition, the success rate of going into the well of chemical sand control is low, and period of validity is short.Efficient according to the ASSOCIATE STATISTICS chemical sand control about 86%, about 306 days of average effective phase.3, the resin sand screen sand control success rate of going into the well is low, and is efficient about 71% according to ASSOCIATE STATISTICS resin sand screen sand control.
Cause the main cause of the problems referred to above to be: 1, OW is because waterflooding extraction for many years, moisturely generally reaches more than 90%, and macropore grows, and shale, the migration of powder fine sand are comparatively serious, causes mechanical sand control to result in blockage easily to fall to produce not even output.The chemical sand control construction is prone to channelling, causes success rate low, and period of validity is short.2, most of oil well hole angle is big, and the resin sand screen is prone to cause damage, fragmentation in being lowered to process.
To above problem, it is good to need to develop a kind of anti-clogging performance, and intensity is high, can not only be used for straight well, the sand screen that also can on high angle hole, use.
Summary of the invention
The purpose of the utility model provides a kind of oil well anti-clogging sand screen, is used for the sand control of various oil wells, and its intensity is high, and is not fragile.Overcome existing sand screen and be prone to obstruction, breakable defective, improve the anti-clogging performance, increase the service life, improve sand controlling result.
The technical solution of the utility model is: a kind of oil well anti-clogging sand screen comprises the center parent tube, and the center parent tube is provided with liquid flow hole, and the center parent tube is equipped with corundum sand block layer and outer jointing jacket outward, and corundum sand block layer and outer jointing jacket two ends are fixed by support ring.The corundum sand block layer that select high strength, fine pore for use, be difficult for absorption impurity, the anti-clogging performance is good, the outside installs outer jointing jacket additional corundum sand block layer is played a good protection.
The utility model compared with prior art; Have following useful effect: the utility model is prone to cause stop up to mechanical sand control; The resin sand screen is lowered to breakable problem in inclined shaft, adopt the corundum sand block layer of fine pore, and its outside installs outer jointing jacket additional; Have anti-blocking ability strong, be difficult for characteristics broken, that can in inclined shaft, be lowered to, can effectively guarantee the production capacity after the sand control.Solved oil well behind the mechanical sand control stop up fall that products, chemical sand control anti-ly do not live, the resin sand screen can't be lowered in the inclined shaft a difficult problem, reduced the well of lying.Open the form in effluent hole on the sidewall that the flow that is employed in outer jointing jacket caves in, flow is formed the concave surface on the flow depression impact, the effluent orifice flow from the sidewall of depression both sides is gone into, and does not directly impact corundum sand block layer, and formation is protection effectively, has prolonged application life.Show that through producing experiment the utility model sand control is reliable, the anti-clogging ability is strong, and sand controlling result is good, can effectively improve oil well productivity and sand control life, and remarkable in economical benefits has application promise in clinical practice.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing; A kind of oil well anti-clogging sand screen comprises center parent tube 1; Center parent tube 1 is provided with liquid flow hole 5; Center parent tube 1 outer corundum sand block layer 4 and the outer jointing jacket 3 of being equipped with, sand block layer 4 is fixing by support ring 2 with outer jointing jacket 3 two ends.Be uniformly distributed with the flow depression on the outer jointing jacket 3, on the both sides sidewall of flow depression, offer the effluent hole.Promptly in two sidewall upper sheds of flow depression, flow only forms the concave surface of flow depression impacts, and gets into corundum sand block layer 4 and center parent tube 1 from the effluent hole of concave surface both sides, and corundum sand block layer 4 is played the protecting against shock protective effect.Corundum sand block layer 4 comprises a plurality of corundum sand retention pipes, between the corundum sand retention pipe and between corundum sand block layer 4 and the support ring 2 sealing ring 6 is being housed.Force the fluid corundum sand block layer 4 of flowing through, play sand controlling result.Weld with center parent tube 1 and outer jointing jacket 3 respectively at support ring 2 two ends.Support ring 2 is welded on the center parent tube 1, in order to connect outer jointing jacket 3 and center parent tube 1.The sand block precision of corundum sand block layer 4 is located between the 30-120 micron, and wall thickness is set between the 8-11 millimeter, and its length setting is between the 500-1000 millimeter.The internal diameter of tube body of corundum sand block layer 4 is 73 millimeters or 60.3 millimeters, cooperates with the external diameter of center parent tube 1.Center parent tube 1 is the tubing size of standard or adopts standard oil control to do that easy to connect with down-hole string, the two ends of center parent tube 1 can adopt tubing coupling to be connected with down-hole string.
When specifically manufacturing; On center parent tube 1, bore liquid flow hole 5; Behind center parent tube 1 one ends welding support ring 2, corundum sand block layer 4, sealing ring 6 are sleeved on the center parent tube 1, another support ring 2 is welded on the center parent tube 1 after the other end of center parent tube 1 compresses.Have the outer jointing jacket 3 in effluent hole at last at corundum sand block layer 4 coated outside one deck, again outer jointing jacket 3 and support ring 2 are welded.
Claims (7)
1. oil well anti-clogging sand screen; Comprise center parent tube (1), center parent tube (1) is provided with liquid flow hole (5), it is characterized in that; Outer corundum sand block layer (4) and the outer jointing jacket (3) of being equipped with of center parent tube (1), corundum sand block layer (4) and outer jointing jacket (3) two ends are fixing by support ring (2).
2. a kind of oil well anti-clogging sand screen according to claim 1 is characterized in that, is uniformly distributed with the flow depression on the said outer jointing jacket (3), on the both sides sidewall of flow depression, offers the effluent hole.
3. a kind of oil well anti-clogging sand screen according to claim 1 is characterized in that said corundum sand block layer (4) comprises a plurality of corundum sand retention pipes, between the corundum sand retention pipe and between corundum sand block layer (4) and the support ring (2) sealing ring (6) is being housed.
4. according to claim 1 or 3 described a kind of oil well anti-clogging sand screens, it is characterized in that said support ring (2) two ends are welded with center parent tube (1) and outer jointing jacket (3) respectively.
5. according to claim 1 or 3 described a kind of oil well anti-clogging sand screens, it is characterized in that the sand block precision set of said corundum sand block layer (4) is between the 30-120 micron, wall thickness is set between the 8-11 millimeter, and its length setting is between the 500-1000 millimeter.
6. a kind of oil well anti-clogging sand screen according to claim 5 is characterized in that the internal diameter of tube body of said corundum sand block layer (4) is 73 millimeters or 60.3 millimeters, cooperates with the external diameter of center parent tube (1).
7. a kind of oil well anti-clogging sand screen according to claim 6 is characterized in that said center parent tube (1) is the tubing size of standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204160228U CN202325436U (en) | 2011-10-17 | 2011-10-17 | Anti-blocking sand filter pipe of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204160228U CN202325436U (en) | 2011-10-17 | 2011-10-17 | Anti-blocking sand filter pipe of oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325436U true CN202325436U (en) | 2012-07-11 |
Family
ID=46437418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204160228U Expired - Fee Related CN202325436U (en) | 2011-10-17 | 2011-10-17 | Anti-blocking sand filter pipe of oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452534A (en) * | 2013-09-13 | 2013-12-18 | 天津金顺科技发展有限公司 | Composite sand-preventing sieve pipe |
| CN115126481A (en) * | 2022-06-28 | 2022-09-30 | 广州海洋地质调查局 | Method and device for determining performance of sand blocking medium |
-
2011
- 2011-10-17 CN CN2011204160228U patent/CN202325436U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452534A (en) * | 2013-09-13 | 2013-12-18 | 天津金顺科技发展有限公司 | Composite sand-preventing sieve pipe |
| CN115126481A (en) * | 2022-06-28 | 2022-09-30 | 广州海洋地质调查局 | Method and device for determining performance of sand blocking medium |
| CN115126481B (en) * | 2022-06-28 | 2023-09-29 | 广州海洋地质调查局 | Method and device for determining performance of sand blocking medium |
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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: 20120711 Termination date: 20121017 |