CN203476296U - Novel composite sieve tube - Google Patents
Novel composite sieve tube Download PDFInfo
- Publication number
- CN203476296U CN203476296U CN201320464995.8U CN201320464995U CN203476296U CN 203476296 U CN203476296 U CN 203476296U CN 201320464995 U CN201320464995 U CN 201320464995U CN 203476296 U CN203476296 U CN 203476296U
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- jacket
- sieve
- screen
- base tube
- composite
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Abstract
The utility model provides a novel composite sieve tube which comprises a base tube and a sieve jacket, wherein seepage holes are distributed in the base tube uniformly; the sieve jacket comprises an inner jacket, a filter screen and an outer jacket; the filter screen sequentially wraps on the outer wall of the inner jacket, and lapping parts are fixed through welding; the filter screen is sleeved with the outer jacket; the end part of the sieve jacket is formed through extruding by an extrusion device; the filter screen at the end part of the sieve jacket is adhered between the outer wall of the inner jacket and the inner wall of the outer jacket; the two ends of the sieve jacket are fixed through welding. According to the composite sieve tube provided by the utility model, an independent sieve jacket structure is adopted, and the sieve jacket is produced independently and then assembled with the base tube, so that the production efficiency is improved greatly; the inner jacket is made of stainless steel, so that sieve jacket support strength and an oil gas circulation channel are increased; three layers of composite metal nets are adopted, so that the strength is high, the filter precision is accurate and can be controlled, sand prevention stability is good and blocking resistance performance is good; the end part of the sieve jacket adopts an advanced extrusion forming technology, so that the product structure is simper and more reliable, and transverse flow of sand grains at the end part of the sieve jacket is eliminated.
Description
Technical field
The utility model relates to a kind of oil gas well mining equipment, specifically, relates to a kind of NEW TYPE OF COMPOSITE screen casing.
Background technology
Oil gas field in recovery process due to strata pressure, geology, mining factor, the ubiquity phenomenon of shaking out.Sand production of oil-gas wells can cause abrasion down-hole, ground installation and instrument such as pump, eliminator, heater, pipeline etc., bridge blinding or obstruction well, affecting Oil/gas Well normally produces, increase cost of production, shake out when serious and can form hole outward at sleeve pipe, cause formation collapse, oil well is scrapped, and to oil field, brings massive losses.
Sand control screen stops sand grains in stratum along with formation fluid enters pit shaft, to control formation sand production exactly with being used for.Adopt the direct sand control of sand control pipe can reduce sand control treatment cost, improve sand control success rate, and field operation is simple, the sand control time is long.Compound sand-prevention screen pipe is as a kind of mechanical sand control screen casing, and it has high permeability, sand control good stability, the feature such as corrosion-resistant.
Compound sand-prevention screen pipe structure is in the market that base tube sets gradually support earial drainage net and control sand net outward, and earial drainage net and control sand net are alternately arranged, and outside is furnished with oversheath.There is following shortcoming in it: screen jacket must be made on base tube, only after completing base tube processing, can make screen jacket; Screen cloth is directly assembled on base tube, and screen cloth self intensity is limited, has limited the compressive property of screen casing integral body; Two-layer steady fine groove control sand net and two or three layers of earial drainage net are alternately arranged, and screen cloth must be welded and fixed, and operation is too complicated, and the production cycle, long efficiency was low.Because oversheath end is with holes or seam, assembly welding difficulty is large, occurs that the probability of weld defect is large, and weld strength is low.
Utility model content
For above-mentioned deficiency of the prior art, it is a kind of simple in structure that the utility model provides, and can reduce the production cycle, solves that assembly welding difficulty is large, the intensity NEW TYPE OF COMPOSITE screen casing of a high difficult problem not.
Technical solution adopted in the utility model is:
A NEW TYPE OF COMPOSITE screen casing, comprises base tube and screen jacket, is evenly equipped with seepage flow eyelet on base tube; Screen jacket is comprised of inner sheath, screen pack, oversheath, and winding up is to inner sheath outer wall successively for screen pack, and lap position is welded and fixed, and oversheath is set with on screen pack; Pressurizing unit is to the extrusion modling of screen jacket end, and the screen pack of screen jacket end is affixed between inner sheath outer wall and oversheath inwall, and screen jacket two ends are welded and fixed.
Described screen pack comprises: internal layer earial drainage net, control sand net and outer earial drainage net; Control sand net is selected twill net.
The end extrusion modling of described screen jacket.
The beneficial effect of the relative prior art of the utility model:
The utility model NEW TYPE OF COMPOSITE screen casing, independent screen jacket structure, screen jacket is produced separately rear and base tube assembling, has greatly improved production efficiency; The design of stainless steel inner sheath, increases screen jacket support strength and gas stream circulation passage; Three layers composite metal net, intensity is high, and filtering accuracy is accurately controlled, sand control good stability, anti-clogging is good; Advanced screen jacket end extrusion forming technology, product structure is more simple and reliable, has eliminated the lateral flow of screen jacket end sand grains.
Accompanying drawing explanation
Fig. 1 is the utility model NEW TYPE OF COMPOSITE screen construction schematic diagram;
Fig. 2 is the front N-N sectional structure schematic diagram of the screen jacket end extrusion modling of the utility model NEW TYPE OF COMPOSITE screen casing;
Fig. 3 is N-N sectional structure schematic diagram after the screen jacket end extrusion modling of the utility model NEW TYPE OF COMPOSITE screen casing.
Critical piece symbol description in accompanying drawing:
In figure:
1, inner sheath 2, internal layer earial drainage net
3, control sand net 4, outer earial drainage net
5, oversheath 6, gap
7, base tube 8, screen cloth overlap the angle that staggers
9, projection 10, screen cloth lap position
11, screen jacket.
The specific embodiment
Referring to drawings and Examples, the utility model is described in detail:
Accompanying drawing 1-3 is known, and a kind of NEW TYPE OF COMPOSITE screen casing comprises base tube 7 and screen jacket 11, is evenly equipped with seepage flow eyelet on base tube 7; Screen jacket 11 is comprised of inner sheath 1, screen pack, oversheath 5, and winding up is to inner sheath 1 outer wall successively for screen pack, and lap position is welded and fixed, and oversheath 5 suits are to screen pack; Pressurizing unit is to screen jacket 11 end extrusion modlings, and the screen pack of screen jacket 11 ends is affixed between inner sheath 1 outer wall and oversheath 5 inwalls, and screen jacket 11 two ends are welded and fixed; Described screen pack comprises: internal layer earial drainage net 1, control sand net 3 and outer earial drainage net 4; Control sand net 3 is selected twill net; Described screen jacket 11 end extrusion modlings.
The utility model NEW TYPE OF COMPOSITE screen casing, independent screen jacket structure, screen jacket is produced separately rear and base tube assembling, has greatly improved production efficiency; The design of stainless steel inner sheath, increases screen jacket support strength and gas stream circulation passage; Three layers composite metal net, intensity is high, and filtering accuracy is accurately controlled, sand control good stability, anti-clogging is good; Advanced screen jacket end extrusion forming technology, product structure is more simple and reliable, has eliminated the lateral flow of screen jacket end sand grains.
Claims (3)
1. a NEW TYPE OF COMPOSITE screen casing, comprises base tube and screen jacket, it is characterized in that: on base tube, be evenly equipped with seepage flow eyelet; Screen jacket is comprised of inner sheath, screen pack, oversheath, and winding up is to inner sheath outer wall successively for screen pack, and lap position is welded and fixed, and oversheath is set with on screen pack; Pressurizing unit is to the extrusion modling of screen jacket end, and the screen pack of screen jacket end is affixed between inner sheath outer wall and oversheath inwall, and screen jacket two ends are welded and fixed.
2. NEW TYPE OF COMPOSITE screen casing according to claim 1, is characterized in that: described screen pack comprises: internal layer earial drainage net, control sand net and outer earial drainage net; Control sand net is twill net.
3. NEW TYPE OF COMPOSITE screen casing according to claim 1, is characterized in that: the end extrusion modling of described screen jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464995.8U CN203476296U (en) | 2013-08-01 | 2013-08-01 | Novel composite sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464995.8U CN203476296U (en) | 2013-08-01 | 2013-08-01 | Novel composite sieve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476296U true CN203476296U (en) | 2014-03-12 |
Family
ID=50224643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464995.8U Expired - Lifetime CN203476296U (en) | 2013-08-01 | 2013-08-01 | Novel composite sieve tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927082B2 (en) | 2019-02-20 | 2024-03-12 | Schlumberger Technology Corporation | Non-metallic compliant sand control screen |
-
2013
- 2013-08-01 CN CN201320464995.8U patent/CN203476296U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927082B2 (en) | 2019-02-20 | 2024-03-12 | Schlumberger Technology Corporation | Non-metallic compliant sand control screen |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |