CN201232541Y - Composite permeable downhole filter for stainless steel - Google Patents
Composite permeable downhole filter for stainless steel Download PDFInfo
- Publication number
- CN201232541Y CN201232541Y CNU2008200165790U CN200820016579U CN201232541Y CN 201232541 Y CN201232541 Y CN 201232541Y CN U2008200165790 U CNU2008200165790 U CN U2008200165790U CN 200820016579 U CN200820016579 U CN 200820016579U CN 201232541 Y CN201232541 Y CN 201232541Y
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- Prior art keywords
- stainless steel
- pipe
- oil
- thread
- central tube
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- Expired - Fee Related
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Abstract
The utility model relates to a stainless compound sand screening pipe which comprises a coupling, a central pipe, a filter element, an outer protective pipe and fixed rings; the sand screening pipe is characterized in that the upper end of the central pipe is provided with the coupling connected with the central pipe by thread, and the lower end is provided with pin thread connected with an oil string by thread, and the periphery of the middle is provided with a plurality of oil inlet holes; the upper part and the lower part of each oil inlet hole are respectively provided with the same fixed rings; the opposite ends of the fixed rings are provided with ladder-shaped terraces; the fixed rings are welded or connected with the central pipe by thread; a cylindrical frame is welded on the inner ladder-shaped terrace; the periphery of the frame is provided with a filter element consisting of a stainless steel wire gauze and a stainless steel mat screen; the outer ladder-shaped terrace is provided with the outer protective pipe with the circumference provided with a plurality of long oil through holes; and the outer protective pipe is welded with the central pipe. The stainless steel compound sand screening pipe is characterized by light weight, high penetration rate and long service life, and is applicable for sand prevention for any well.
Description
One, technical field
The utility model relates to the compound sand screen of stainless steel that the sand control under development of a kind of oil field is used.
Two, background technology
Shengli Oil Field has arrived the exploitation later stage at present, and it is moisture all very high that oil well contains sand, for guaranteeing the normal oil recovery and the oil transportation of oil well, has all implemented sand control measure to containing sand in the shaft bottom than higher well, has plenty of at the stifled sand of oil reservoir, has plenty of at the stifled sand of oil reservoir tubing string.At the stifled sand of oil reservoir tubing string mainly is under the sand filtration by anti-sandpipe, do not allow it enter oil pipe, sand under the filter passes through backwash again, be flushed to floor treatment, existing anti-sandpipe mainly is that structure is unreasonable a bit in addition with not corrosion resistant metal net making, cause the sand control tube lifetime short, have more than is needed some months sand control screens just corrosion badly loses sand control effect or too many at sand control screens place collection sand, and sand control screens is blocked, and loses the sand control effect.
Three, summary of the invention
The purpose of this utility model provides the compound sand screen of a kind of stainless steel, solves anti-the sandpipe short and easy blockage problem in application life that above-mentioned prior art exists.
The technical solution of the utility model realizes in the following manner:
The utility model is by box cupling; central tube; filter core; outer protection tube and retainer ring are formed; it is characterized in that the central tube upper end is provided with the box cupling that is threaded with it; the bottom is provided with the male thread that is connected with oil string thread; in the middle part periphery several fuel feed holes are set; the retainer ring of an identical opposite end band terraced steps is set respectively in the upper and lower of fuel feed hole; with central tube welding or be threaded; on interior terraced steps, be welded with cylindrical skeleton; the skeleton periphery is provided with the filter core of being made up of stainless steel lining net and stainless steel seat shape net; terraced steps is provided with the outer protection tube of wearing several strip oil throughs week outside, welds with central tube.
That compared with the prior art the utility model has is in light weight, permeability is high, the characteristics of long service life, be applicable to the sand control of any well, because of its component parts all adopts stainless steel material, high temperature resistant, corrosion resistance is strong, prolong the life cycle of anti-sandpipe greatly, reduced the workover treatment number of times, improved oil well output.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
The outer protection tube 5-retainer ring of 1-box cupling 2-central tube 3-filter core 4-among the figure
Five, the specific embodiment
For further disclosing the technical solution of the utility model, elaborate by embodiment below in conjunction with Figure of description:
The utility model is by box cupling 1; central tube 2; filter core 3; outer protection tube 4 and retainer ring 5 are formed; it is characterized in that the central tube upper end is provided with the box cupling that is threaded with it; the bottom is provided with the male thread that is connected with oil string thread; in the middle part periphery several fuel feed holes are set; the retainer ring of an identical opposite end band terraced steps is set respectively in the upper and lower of fuel feed hole; with central tube welding or be threaded; on interior terraced steps, be welded with cylindrical skeleton; the skeleton periphery is provided with the filter core of being made up of stainless steel lining net and stainless steel seat shape net; terraced steps is provided with the outer protection tube of wearing several strip oil throughs week outside, welds with central tube.
When using the utility model, be connected in the tubing string; arrive the oil layer section that needs sand control down with tubing string; outer protection tube 4, the filter core 3 that crude oil is fixed on central tube 2 peripheries by retainer ring 5 enters oil reservoir sand that central tube carries crude oil to filtering; make the sand factor in the crude oil drop to extremely low; avoid oil well pump sand card, reduce wearing and tearing, improve the application life of oil well pump oil well pump; prevent anti-blocking ground gathering line, damage ground and need treatment facility.
Claims (1)
1; the compound sand screen of a kind of stainless steel; by box cupling; central tube; filter core; outer protection tube and retainer ring are formed; it is characterized in that the central tube upper end is provided with the box cupling that is threaded with it; the bottom is provided with the male thread that is connected with oil string thread; in the middle part periphery several fuel feed holes are set; the retainer ring of an identical opposite end band terraced steps is set respectively in the upper and lower of fuel feed hole; with central tube welding or be threaded; on interior terraced steps, be welded with cylindrical skeleton; the skeleton periphery is provided with the filter core of being made up of stainless steel lining net and stainless steel seat shape net; terraced steps is provided with the outer protection tube of wearing several strip oil throughs week outside, welds with central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200165790U CN201232541Y (en) | 2008-01-12 | 2008-01-12 | Composite permeable downhole filter for stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200165790U CN201232541Y (en) | 2008-01-12 | 2008-01-12 | Composite permeable downhole filter for stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232541Y true CN201232541Y (en) | 2009-05-06 |
Family
ID=40618918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200165790U Expired - Fee Related CN201232541Y (en) | 2008-01-12 | 2008-01-12 | Composite permeable downhole filter for stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232541Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242622A (en) * | 2011-06-14 | 2011-11-16 | 中国石油大学(华东) | Self-adaptive adjusting sand prevention sieve tube based on double-trapezoid slotted sieve tube |
| CN102536176A (en) * | 2010-12-30 | 2012-07-04 | 淄博东森石油技术发展有限公司 | Pressure-regulating and water-controlling sand control pipe |
-
2008
- 2008-01-12 CN CNU2008200165790U patent/CN201232541Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536176A (en) * | 2010-12-30 | 2012-07-04 | 淄博东森石油技术发展有限公司 | Pressure-regulating and water-controlling sand control pipe |
| CN102242622A (en) * | 2011-06-14 | 2011-11-16 | 中国石油大学(华东) | Self-adaptive adjusting sand prevention sieve tube based on double-trapezoid slotted sieve tube |
| CN102242622B (en) * | 2011-06-14 | 2014-05-28 | 中国石油大学(华东) | Self-adaptive adjusting sand prevention sieve tube based on double-trapezoid slotted sieve tube |
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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: 20090506 Termination date: 20100219 |