CN202348241U - Novel efficient precision composite sand filter pipe - Google Patents
Novel efficient precision composite sand filter pipe Download PDFInfo
- Publication number
- CN202348241U CN202348241U CN2011204557707U CN201120455770U CN202348241U CN 202348241 U CN202348241 U CN 202348241U CN 2011204557707 U CN2011204557707 U CN 2011204557707U CN 201120455770 U CN201120455770 U CN 201120455770U CN 202348241 U CN202348241 U CN 202348241U
- Authority
- CN
- China
- Prior art keywords
- filter layer
- filtration beds
- parent tube
- support bar
- water conservancy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtering Materials (AREA)
Abstract
The utility model relates to a novel efficient precision composite sand filter pipe for drilling and completion of oilfields. According to the technical scheme, the composite sand filter pipe mainly comprises a base pipe, end rings, an outer protective sleeve, a filter layer, diversion supporting strips and circular holes; a plurality of circular holes are drilled in the base pipe by adopting an auger drilling mode; the bar-type diversion supporting strips are uniformly distributed between the longitudinal intervals of the circular holes; the filter layer with certain thickness is wrapped on the diversion supporting strips; the outer protective sleeve is arranged outside the filter layer; bridge-type flow testing holes are punched in the outer protective sleeve; two ends of the filter layer and two ends of the outer protective sleeve are fixed through the end rings; and the end rings are welded on the base pipe. The composite sand filter pipe has the advantages that the diversion supporting strips are uniformly distributed on the novel filter layer and the base pipe in the circumferential direction and blocked to form a plurality of regular longitudinal direct flow passages, so that the filtered liquid flows in an enough space and is difficult to block; and the filter layer has strong corrosion resistance, high strength and good sand blocking resistant effect, and the service life of the filter layer is greatly prolonged.
Description
Technical field:
The utility model relates to a kind of oil drilling completion tool, the compound sand screen of particularly a kind of new and effective precision.
Background technology:
In oil field development; In the completion mode of being taked to loose rock oil reservoir exploitation; The bore hole sandpipe completions that adopt are directed to the accurate micropore sand screen completion that shale rock dust fine sand uses at present mostly more, and the employed filter screen of its filtration beds of this screen casing is to be formed by the stainless steel wire braiding; But, generally be 0.4mm to the maximum because its footpath is very little.Therefore in use for some time, in long-term corrosion and wash away under the condition, silk screen will be destroyed, and causes the filter sand performance failure.Because filtration beds is made up of multi-layer silk screen, makes and pass the accumulation between layer and layer of the more tiny grains of sand of filter screen simultaneously, cause sand plug for a long time; The serious sand that causes buries; Cause serious consequence to the later stage oil recovery, output is reduced greatly, bring heavy losses for the production in oil field.
Summary of the invention:
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, provides a kind of new and effective precision compound sand screen, and it is good, anti-stifled and sand controlling result is good, the characteristics of long service life to have a high antiseptic property, intensity.
Its technical scheme is: mainly be made up of parent tube, end ring, outer jointing jacket, filtration beds, water conservancy diversion support bar and circular hole; Adopt the mode of auger boring to be drilled with some circular holes on the described parent tube, evenly divide Strap water conservancy diversion support bar between the circular hole longitudinal separation, parcel has certain thickness filtration beds on the water conservancy diversion support bar; Filtration beds is provided with outer jointing jacket outward; Punching out bridge-type orifice is fixed through end ring at the two ends of filtration beds and outer jointing jacket on the outer jointing jacket, and end ring is welded on the parent tube.
Above-mentioned filtration beds adopts corrosion-resistant high foamed material to process, and its pore size filter is between the 0.1-0.2mm.
Above-mentioned water conservancy diversion support bar point uniformly is welded on the cylindrical of parent tube, in the middle of the circular hole longitudinal separation of parent tube, distributes.
The beneficial effect of the utility model is: because the compound sand screen of this high-efficiency and precision has utilized the auger boring mode to punch.Even spot welding water conservancy diversion support bar between the longitudinal separation of Kong Yukong; The water conservancy diversion support bar evenly distributes novel filtration beds and parent tube in a circumferential direction; Packing forms some well-regulated vertical direct current channels, makes the liquid after being filtered have enough spaces to flow, thereby is difficult for stopping up.Simultaneously filtration beds has good corrosion resistance, intensity is high, filtering accuracy is high characteristics.Outer jointing jacket can effectively protect in the process of going into the well the borehole wall to the scratch of filtering material in addition, and protective sleeve also has the effect of coarse filtration simultaneously, so the sand control of the utility model prolongs anti-stifled effective, application life greatly.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is sectional views of the utility model;
Among the last figure: parent tube 1, end ring 2, outer jointing jacket 3, filtration beds 4, water conservancy diversion support bar 5, circular hole 6, bridge-type orifice 7.
The specific embodiment:
In conjunction with accompanying drawing 1-2, the utility model is done further to describe:
The utility model mainly is made up of parent tube 1, end ring 2, outer jointing jacket 3, filtration beds 4, water conservancy diversion support bar 5 and circular hole 6; Adopt the mode of auger boring to be drilled with some circular holes 6 on the described parent tube 1; Between circular hole 6 longitudinal separations, evenly trapezoidal of spot welding stainless steel is as water conservancy diversion support bar 5, and parcel has certain thickness filtration beds 4 on the water conservancy diversion support bar 5; Between filtration beds and parent tube, form some vertical passages like this, the flowing velocity of liquid has improved anti-clogging after having accelerated like this to filter.For protect filtration beds in being lowered to process not by borehole wall scratch, stainless steel outer jointing jacket 3 is arranged outside filtration beds 4, punching out bridge-type orifice 7 on the outer jointing jacket 3 also can play the effect of coarse filtration.Two ends at filtration beds and outer jointing jacket are fixing with end ring 2, and end ring 2 is welded on the parent tube.
Wherein, filtration beds 4 adopts corrosion-resistant high foamed material to process, and its pore size filter is between the 0.1-0.2mm.This filtering material has certain thickness, has substituted multistorey strainer mesh commonly used, and has had good corrosion resistance, intensity high filtering precision characteristic of accurate.
Because the compound sand screen of this high-efficiency and precision has utilized the auger boring mode to punch.Even spot welding water conservancy diversion support bar between the longitudinal separation of Kong Yukong; The water conservancy diversion support bar evenly distributes novel filtration beds and parent tube in a circumferential direction; Packing forms some well-regulated vertical direct current channels, makes the liquid after being filtered have enough spaces to flow, thereby is difficult for stopping up.Simultaneously filtration beds has good corrosion resistance, intensity is high, filtering accuracy is high characteristics.Outer jointing jacket can effectively protect in the process of going into the well the borehole wall to the scratch of filtering material in addition, and protective sleeve also has the effect of coarse filtration simultaneously.Therefore has outstanding advantage in use.
Claims (3)
1. compound sand screen of new and effective precision; It is characterized in that: mainly form by parent tube (1), end ring (2), outer jointing jacket (3), filtration beds (4), water conservancy diversion support bar (5) and circular hole (6); Described parent tube (1) is gone up and is adopted the mode of auger boring to be drilled with some circular holes (6); Evenly divide Strap water conservancy diversion support bar (5) between circular hole (6) longitudinal separation; Water conservancy diversion support bar (5) is gone up parcel and is had certain thickness filtration beds (4), the outer outer jointing jacket (3) that is provided with of filtration beds (4), and outer jointing jacket (3) is gone up punching out bridge-type orifice (7); Two ends at filtration beds (4) and outer jointing jacket (3) are fixing through end ring (2), and end ring (2) is welded on the parent tube.
2. the compound sand screen of new and effective precision according to claim 1 is characterized in that: described filtration beds (4) adopts corrosion-resistant high foamed material to process, and its pore size filter is between the 0.1-0.2mm.
3. the compound sand screen of new and effective precision according to claim 1 is characterized in that: described water conservancy diversion support bar (5) point uniformly is welded on the cylindrical of parent tube (1), in the middle of circular hole (6) longitudinal separation of parent tube, distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204557707U CN202348241U (en) | 2011-11-17 | 2011-11-17 | Novel efficient precision composite sand filter pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204557707U CN202348241U (en) | 2011-11-17 | 2011-11-17 | Novel efficient precision composite sand filter pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348241U true CN202348241U (en) | 2012-07-25 |
Family
ID=46537250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204557707U Expired - Fee Related CN202348241U (en) | 2011-11-17 | 2011-11-17 | Novel efficient precision composite sand filter pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109760918A (en) * | 2019-01-25 | 2019-05-17 | 安徽永锋防护科技股份有限公司 | A kind of EPP backing plate that chemical corrosion resistance is strong |
-
2011
- 2011-11-17 CN CN2011204557707U patent/CN202348241U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109760918A (en) * | 2019-01-25 | 2019-05-17 | 安徽永锋防护科技股份有限公司 | A kind of EPP backing plate that chemical corrosion resistance is strong |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6715544B2 (en) | Well screen | |
| RU2616952C1 (en) | Movable composite pipe for sand control comprising filters with axial and radial slits | |
| CN203201503U (en) | Drilling fluid filter | |
| CN200992998Y (en) | Well completion sand-proof screen pipe with graded filtering performance | |
| CN202348241U (en) | Novel efficient precision composite sand filter pipe | |
| CN105221118A (en) | A kind of novel foam metal sand-proof pipe | |
| CN204267000U (en) | A kind of tune Flow Control water pipe post and a kind of wellbore construction | |
| EP2458144B1 (en) | Flow control screen tube for use in oil recovery process | |
| CN213980682U (en) | Novel high-efficient durable type filter screen short circuit in pit | |
| CN202348242U (en) | High-strength micro-circular seam composite sand filtering pipe | |
| CN210977419U (en) | Underground sand-proof slotted screen pipe based on unequal-width gaps | |
| CN214532912U (en) | Bypass screen pipe | |
| RU2348795C1 (en) | Demountable well screen | |
| RU67630U1 (en) | Borehole Filter | |
| RU187105U1 (en) | Borehole filter | |
| CN201460748U (en) | Anti-clogging cover for oil bit port | |
| CN203362053U (en) | Novel drill rod filter on ground | |
| CN102296944A (en) | High-strength steam-injection thermal extraction sieve tube | |
| CN202249876U (en) | Hydraulic rotary jet sand settling cylinder suitable for cleaning low-pressure gas well shaft | |
| CN213175603U (en) | Resistance-reducing and anti-blocking two-stage sand filter pipe | |
| CN201031670Y (en) | Bridge type gap sieve tube | |
| CN204024607U (en) | Slit type 00Cr9MoNi alloy steel sand-proof pipe | |
| CN203476296U (en) | Novel composite sieve tube | |
| CN112177572A (en) | Annular self-filling sand control screen pipe | |
| CN201125719Y (en) | Double-layer net cartridge permeable downhole filter apparatus |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20181117 |