EP1101873A2 - Tube filtrant à placer dans un puits et méthode de production de ce tube filtrant - Google Patents

Tube filtrant à placer dans un puits et méthode de production de ce tube filtrant Download PDF

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Publication number
EP1101873A2
EP1101873A2 EP00124128A EP00124128A EP1101873A2 EP 1101873 A2 EP1101873 A2 EP 1101873A2 EP 00124128 A EP00124128 A EP 00124128A EP 00124128 A EP00124128 A EP 00124128A EP 1101873 A2 EP1101873 A2 EP 1101873A2
Authority
EP
European Patent Office
Prior art keywords
plastic material
filter
tube
filter tube
filter layer
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.)
Withdrawn
Application number
EP00124128A
Other languages
German (de)
English (en)
Other versions
EP1101873A3 (fr
Inventor
Antonio Giangrasso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfleiderer Water Systems GmbH
Original Assignee
Pfleiderer Infrastrukturtechnick GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pfleiderer Infrastrukturtechnick GmbH and Co KG filed Critical Pfleiderer Infrastrukturtechnick GmbH and Co KG
Publication of EP1101873A2 publication Critical patent/EP1101873A2/fr
Publication of EP1101873A3 publication Critical patent/EP1101873A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/08—Screens or liners
    • E21B43/082—Screens comprising porous materials, e.g. prepacked screens
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
    • E03B3/08—Obtaining and confining water by means of wells
    • E03B3/16—Component parts of wells
    • E03B3/18—Well filters
    • E03B3/20—Well filters of elements of special shape

Definitions

  • the invention relates to a filter tube for insertion into a bottom borehole for filtering a liquid stored in the soil.
  • Such filter tubes are used wherever there is a stored in the ground Liquid is to be removed by pumping. As examples are Water wells to name that are in very sandy areas or in desert areas be drilled. Via filter pipes inserted in the ground borehole the water stored in a layer of sand can be pumped out. Another one The area of application is the removal of leachate in the area below landfills and the same. There is stored or seeping in the ground Water absorbed and pumped out through the filter tubes.
  • Known filter tubes consist of a support tube, which either itself with appropriate, the actual filtering slits or openings is provided, or which is covered with a filter layer, on the support tube Openings are provided that prevent the filter layer from penetrating Allow water into the pipe interior.
  • the invention is therefore based on the problem of specifying a filter tube which can be produced in a simple and inexpensive manner and has good filter properties owns.
  • a filter tube to be placed in a ground borehole provided for filtering a liquid stored in the soil, comprising a carrier tube with liquid passage openings and one on the outside arranged porous filter layer made of a sintered plastic material.
  • the filter tube according to the invention has a porous filter layer which consists of a Plastic material exists, which is sintered on in a simple sintering process has been.
  • the plastic material is over Heated melting temperature so that there is a melting or sintered composite, which leads to a firmly adhering and stable filter layer that is still porous is.
  • Plastic material in granular or powder form is preferably used.
  • the pore size easily by choosing the size of the granular or powdered plastic material possible, on the other hand by the duration of the Temperature treatment and the heating temperature itself, as a result of which Networking or the degree of bonding can be varied. This allows you to easily Way filter tubes of different porosity are manufactured, each for different uses or locations and soil conditions are suitable. Another advantage is that there is no additional to produce the filter layer Aids such as resins, adhesives or the like are required.
  • the plastic material should be preferred be a high or ultra high molecular material.
  • Polyethylene is preferred here (with high molar mass (approx. 200,000 - 5 million g / mol), short name: HD-HMW-PE, or ultra high molecular weight (3 million - 6 million g / mol), short name: UHMW-HD-PE) or polypropylene.
  • high molar mass approximately 200,000 - 5 million g / mol
  • HD-HMW-PE high molecular weight
  • UHMW-HD-PE ultra high molecular weight
  • the average grain size of the granules or powder should be in the range between 1 ⁇ m and 5 mm.
  • the average pore diameter is preferably in the range between 0.5 ⁇ m and 4 mm, in particular between 1 ⁇ m and 3 mm.
  • the temperature treatment should preferably be carried out such that the pore diameter smaller on the outside of the filter layer than on that on the carrier tube adjacent inside is. According to this embodiment of the invention given a larger pore diameter inside the filter layer, the one allows faster passage of the water through the filter layer to the support tube.
  • the thickness of the filter layer itself should be between 5 mm and 20 mm. It should be ensured that they preferred at least double corresponds to at least three times the granule or powder diameter.
  • the filter tube placed in the borehole - usually a variety of individual filter tubes connected in series, these can either be put together or screwed together - is due to the radially opposing surrounding soil material under high pressure.
  • This bias serves to stabilize the filter tube and to withstand the considerable external pressure.
  • several pipes connected in series are connected in series.
  • the individual filter tubes which preferably has a length between 0.5 m and 4 m, in particular of 2 m have, either after completion at the ends of external or internal thread sections attached in a welding process, or already on the support tube educated.
  • the carrier tube itself can be made from Plastic, especially PVC or PE or a metal, especially stainless steel consist.
  • the invention also relates to a method of manufacture a filter tube, which is characterized in that the carrier tube surrounding loose bed of sinterable granular or powdered Plastic material to form a filter layer sintered onto the carrier tube melted in a heating device by supplying temperature and cools down after reaching a porous fusion or sintered composite.
  • the carrier tube is preferably standing vertically in the heater, which is cylindrical is formed, set between the support tube and the heating walls of the Heating device remaining annulus is made with the granular or powdered Plastic material filled.
  • the plastic material is here based on the inner support tube is heated from the outside. The temperature is supplied until the desired degree of crosslinking or bonding with the desired Porosity.
  • a plastic material high or ultra high molecular plastic material are used, preferred Polyethylene or polypropylene with an average grain size of 1 ⁇ m to 5 mm.
  • the heating should continue until the melting or Sintered composite has an average pore diameter in the range between 0.5pm and 4 mm, in particular between 1 ⁇ m and 3 mm.
  • the sintering temperature is in the range between 150 ° C and 220 ° C, depending on the material used and what degree of bonding or sintering or what porosity can be achieved should.
  • the duration of the temperature treatment also plays a role here, which is preferred in the range between 15 minutes to 120 minutes, especially 30 minutes up to 75 minutes, also depending on the material used or the desired degree of porosity to be set.
  • the length of the heat treatment must of course be so long that a complete warming and Melting of the surfaces of the granules of the plastic granulate or powder down to the plastic grains on the carrier tube.
  • Fig. 1 shows in the form of a schematic diagram the use of an inventive Filter tube 1.
  • the filter tube according to the invention or several, connected in series pipes of this type are used in a borehole 2.
  • Hole 2 was placed in a desert floor in the example shown. This exists from an upper layer 3 of sand, an essentially waterproof Layer 4 of clay, layer 5 of sand, in which water is stored, and a lower layer 6 of clay.
  • the filter tube 1 in the Layer 5 stored water can be filtered and subtracted. That or the filter tubes are only arranged in the lower region of borehole 2, that is in Area of the water-bearing layer.
  • the filter tube 1 consists of a carrier tube 10, on which a filter layer 11 is sintered. That the gravel layer penetrating water reaches the filter layer 11. There the water is let through, carried soil or sand is retained. The water enters the carrier tube 10 through corresponding openings 12 and is pumped out by means of a pump 13, see arrow A. Due to the Filter property of the filter layer 11, the pumped water is very pure and not loaded with sand.
  • the filter layer 11 consists of sintered plastic material, preferably high molecular or ultra high molecular weight polyethylene. This is in the form of individual plastic granules 14. These granules 14 were melted on the outside by thermal treatment and were able to to connect. In this way the granules were sintered together, so that a solid filter layer forms. Because the plastic material is not completely melts, but only on the outside, it is guaranteed that the Filter layer 11 is sufficiently porous.
  • the grain size of the plastic granules used can be in the range between 1 ⁇ m and 5 mm.
  • the porosity can be adjusted to the selected size of the granules.
  • the sintering temperature is between 150 ° C and 220 ° C, the duration preferably in the range between 30 minutes to 75 minutes. The more fine-grained the material is, the shorter the sintering time, because the complete soak and melting on the edge due to the better heat transfer done faster.
  • the specific heating temperature time depends on the material, the radial thickness of the filter layer as well as the granulate size and the desired Pore diameter selected.
  • the pores 15 can be seen in the edge region of the Filter layer 11 slightly smaller than in the inner area, which results from that the outer layer is exposed to the high temperature for a little longer. Can too For this purpose, a targeted, brief temperature increase at the end of the heating period done in pipe manufacturing. The grains on the edge melt a little stronger and connect more extensively. The water that passes through it through openings 12 into the interior of the carrier tube 10.
  • FIG. 3 shows another possible application of the invention Filter tube 1.
  • Several filter tubes are here in an essentially horizontally guided Borehole used. The borehole runs below one, for example Landfill. Any leachate from the landfill can be removed via the filter pipes are recorded and pumped out by means of the pumps 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Filtering Materials (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP00124128A 1999-11-19 2000-11-07 Tube filtrant à placer dans un puits et méthode de production de ce tube filtrant Withdrawn EP1101873A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999155973 DE19955973C1 (de) 1999-11-19 1999-11-19 Filterrohr zum Einbringen in ein Bodenbohrloch sowie Verfahren zur Herstellung des Filterrohrs
DE19955973 1999-11-19

Publications (2)

Publication Number Publication Date
EP1101873A2 true EP1101873A2 (fr) 2001-05-23
EP1101873A3 EP1101873A3 (fr) 2003-04-23

Family

ID=7929804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124128A Withdrawn EP1101873A3 (fr) 1999-11-19 2000-11-07 Tube filtrant à placer dans un puits et méthode de production de ce tube filtrant

Country Status (6)

Country Link
EP (1) EP1101873A3 (fr)
DE (1) DE19955973C1 (fr)
DZ (1) DZ3098A1 (fr)
GC (1) GC0000350A (fr)
MA (1) MA25939A1 (fr)
TN (1) TNSN00217A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003091169A1 (fr) * 2002-04-23 2003-11-06 Pfleiderer Infrastrukturtechnik Gmbh & Co. Kg Aerateur
WO2003103800A2 (fr) * 2002-06-05 2003-12-18 Pall Corporation Cartouche filtrante et son procede de production
WO2008067990A1 (fr) * 2006-12-04 2008-06-12 Pall Corporation Dispositif filtrant, spécialement destiné à s'utiliser comme filtre à tamis pour puits
EP2031138A1 (fr) * 2007-09-03 2009-03-04 Ochs Bohrgesellschaft mbH Utilisation de boules en verre pour le remplissage de l'espace annulaire entre le tuyau de filtre et la paroi du trou de forage en vue de la récupération d'eau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101899967B (zh) * 2010-08-11 2013-05-15 中国水利水电科学研究院 在弱含水层中增加出水量的成井工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813992C (de) * 1949-03-17 1951-09-17 Wilhelm Dipl-Ing Degen Filtrierkoerper, insbesondere Kiespackungskoerper fuer Brunnenfilter u. dgl.
DE3024324A1 (de) * 1980-06-27 1982-01-21 Herding GmbH Entstaubungsanlagen, 8450 Amberg Filterkoerper zum abscheiden von fest- und/oder schwebstoffen und verfahren zu dessen herstellung
JPS60238115A (ja) * 1984-05-11 1985-11-27 Noda Seisakusho:Kk 流体ろ過の固形ろ過体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE910288C (de) * 1936-08-27 1954-04-29 Pfaelzische Chamotte Und Tonwe Verfahren zur Herstellung poroeser Formkoerper fuer Filterzwecke und fuer Diaphragmen
DE1759926A1 (de) * 1968-06-21 1971-07-15 Kunststoffrohr Und Filterentwi Brunnenrohr bzw.Rohrschale
DE2231859C3 (de) * 1972-06-29 1978-10-12 Hannover-Braunschweigische Stromversorgungs-Ag, 3000 Hannover Filter für Rohrbrunnen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813992C (de) * 1949-03-17 1951-09-17 Wilhelm Dipl-Ing Degen Filtrierkoerper, insbesondere Kiespackungskoerper fuer Brunnenfilter u. dgl.
DE3024324A1 (de) * 1980-06-27 1982-01-21 Herding GmbH Entstaubungsanlagen, 8450 Amberg Filterkoerper zum abscheiden von fest- und/oder schwebstoffen und verfahren zu dessen herstellung
JPS60238115A (ja) * 1984-05-11 1985-11-27 Noda Seisakusho:Kk 流体ろ過の固形ろ過体

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 107 (C-341), 22. April 1986 (1986-04-22) & JP 60 238115 A (NODA SEISAKUSHO:KK), 27. November 1985 (1985-11-27) *
STRAUSS S: "GESINTERTE KUNSTSTOFF-FORMTEILE FUR DIE FEST-/FLUSSIG-FILTRATION" TECHNISCHE MITTEILUNGEN, HAUS DER TECHNIK E.V., ESSEN, DE, Bd. 85, Nr. 2, 1. Juli 1992 (1992-07-01), Seiten 100-104, XP000373585 ISSN: 0040-1439 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003091169A1 (fr) * 2002-04-23 2003-11-06 Pfleiderer Infrastrukturtechnik Gmbh & Co. Kg Aerateur
US7195233B2 (en) 2002-04-23 2007-03-27 Pfleiderer Water Systems Gmbh Aerator
WO2003103800A2 (fr) * 2002-06-05 2003-12-18 Pall Corporation Cartouche filtrante et son procede de production
WO2003103800A3 (fr) * 2002-06-05 2004-05-27 Pall Corp Cartouche filtrante et son procede de production
WO2008067990A1 (fr) * 2006-12-04 2008-06-12 Pall Corporation Dispositif filtrant, spécialement destiné à s'utiliser comme filtre à tamis pour puits
US8082986B2 (en) 2006-12-04 2011-12-27 Pall Corporation Filtering device, especially for use as a well screen filter
EP2031138A1 (fr) * 2007-09-03 2009-03-04 Ochs Bohrgesellschaft mbH Utilisation de boules en verre pour le remplissage de l'espace annulaire entre le tuyau de filtre et la paroi du trou de forage en vue de la récupération d'eau

Also Published As

Publication number Publication date
TNSN00217A1 (fr) 2002-05-30
DZ3098A1 (fr) 2004-11-29
MA25939A1 (fr) 2003-12-31
GC0000350A (en) 2007-03-31
DE19955973C1 (de) 2002-02-28
EP1101873A3 (fr) 2003-04-23

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