EP0640742A2 - Procédé et dispositif pour influencer un liquide contenu dans le sol - Google Patents

Procédé et dispositif pour influencer un liquide contenu dans le sol Download PDF

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Publication number
EP0640742A2
EP0640742A2 EP93115224A EP93115224A EP0640742A2 EP 0640742 A2 EP0640742 A2 EP 0640742A2 EP 93115224 A EP93115224 A EP 93115224A EP 93115224 A EP93115224 A EP 93115224A EP 0640742 A2 EP0640742 A2 EP 0640742A2
Authority
EP
European Patent Office
Prior art keywords
liquid
shaft
ground
areas
well
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Withdrawn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
EP93115224A
Other languages
German (de)
English (en)
Other versions
EP0640742A3 (fr
Inventor
Bruno Bernhardt
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.)
IEG Industrie Engineering GmbH
Original Assignee
IEG Industrie Engineering GmbH
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 IEG Industrie Engineering GmbH filed Critical IEG Industrie Engineering GmbH
Publication of EP0640742A2 publication Critical patent/EP0640742A2/fr
Publication of EP0640742A3 publication Critical patent/EP0640742A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
    • 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
    • E21B43/14—Obtaining from a multiple-zone well

Definitions

  • the invention relates to a method for influencing liquid in the ground by means of a well shaft which is introduced into the ground and which is divided by partition walls into a plurality of shaft areas which are sealed off from one another.
  • the hydraulic conductivity is greater in the horizontal direction than in the vertical direction, so that radii of the liquid circuits are typically set which are approximately six times greater than the depth of the well.
  • a well depth of 50 m for example, a radius of the liquid circuit of 300 m.
  • this large horizontal expansion of the circuit means that an enormous amount of liquid must also be circulated to clean up the soil.
  • pump capacities it takes years until this amount of liquid has been replaced.
  • this is economically prohibitive.
  • a large radial expansion of the liquid circuit for the detection of the contaminated area is generally not necessary and even undesirable, since this leads to a distribution of the contaminations into even larger areas.
  • the invention has for its object to provide a way of remediation of very deeply contaminated soils that is economically viable.
  • the object is achieved according to the invention with a method of the type mentioned at the outset in that liquid circuits are produced at different depths in the ground between two shaft areas.
  • the individual liquid circuits each have smaller radii than a single large liquid circuit over the entire depth of the well.
  • the total volume of liquid to be circulated is smaller, so that much shorter rehabilitation times are necessary for the same pumping capacity.
  • the method of the invention can also be used to selectively extract water from certain soil layers. This is e.g. B. in source areas with several sources at different depths, the water of which should not mix, required. Further advantages result if the amount of liquid circulated in the soil per liquid circuit can be set separately. Then it is one of the Contamination distribution and the hydraulic conductivity of individual layers of soil can be optimally adapted.
  • the device for carrying out the method according to the invention with a well shaft introduced into the ground, which is divided by partition walls into a plurality of shaft areas sealed against one another is characterized according to the invention in that pipes or hoses connected to the individual shaft areas by a pump through the partition walls Feeding or pumping liquid are led.
  • one pump can be provided for each liquid circuit, the pumps advantageously being able to regulate their output. This enables individual regulation of the amount of liquid circulated per liquid circuit.
  • a common suction and pressure pump can also be provided for all liquid circuits, each of which is connected to the associated shaft areas via pipe or hose lines.
  • the total circulated liquid quantity is also divided among the individual circuits at different depths depending on the contamination distribution and the hydraulic conductivity of the Soil possible.
  • a liquid-tight, horizontal wall can be laid in the ground from the shaft wall at least approximately at the level of the liquid in the ground.
  • the water removed from the uppermost liquid circuit can be fed in again above this horizontal wall, a wide outflow area resulting from the wall. This can prevent the radial spread of the contamination by a reinforced vertical component of the liquid circuit in the vicinity of the upper shaft area.
  • the individual liquid circuits can also be sealed against one another. This is particularly advantageous if water is to be conveyed from the liquid circuits in different layers, which water should not mix with water from other layers.
  • FIG. 1 shows a well pipe 10 which is arranged in a shaft introduced into the ground 11 and has a total of five permeable wall sections 10.1-10.5 spaced apart in the vertical direction. Between the permeable wall sections 10.1-10.5, dividing walls 12-15 are inserted in each case in the well pipe 10, the dividing walls 12, 13 and 14 each having two through openings for two through pipes 16 and 17.
  • the tube 16 is also passed through a through opening in the partition 15.
  • a pump 18 and 19 is arranged in each of the two through-tubes 16 and 17.
  • the partition walls 12-15 divide the well pipe into five areas 20.1-20.5.
  • the well pipe 10 is surrounded by sealing sleeves 33.
  • the tube 18 has a lateral opening 21 in the well areas 20.2 and ends in the well area 20.4.
  • the tube 16 has a lateral outflow opening 22 in the shaft area 20.3 and ends in the lowest shaft area 20.5.
  • liquid is now drawn in through the lateral opening 21 and the end 23 of the tube 17 in the shaft areas 20.2 and 20.4.
  • the Pump 19 presses water into the shaft areas 20.3 and 20.5 via the lateral outflow opening 22 and the end 24 of the pipe 16.
  • a total of four liquid circuits 25-28 are formed, the circuit 25 between the shaft areas 20.1 and 20.2, the circuit 26 between the shaft areas 20.2 and 20.3, the circuit 27 between the shaft areas 20.3 and 20.4 and the circuit 28 between the shaft areas 20.4 and 25.5 trains.
  • the direction of the circuits 25-28 is alternating.
  • the water sucked in through the pipe 17 is conducted above a filter body 29, which is arranged in an expansion of the uppermost shaft area 20.1 and partially protrudes above the liquid level 30 in the well shaft, and is cleaned by this filter body 29 when it flows back.
  • the cleaned liquid is taken up by the pump 16 via the pump 19 and put back into the circuits 26, 27 and 28.
  • the liquid circuits 25-28 shown in Fig. 1 are not sealed against each other. The water from the various circuits is mixed.
  • the well according to FIG. 1 is therefore suitable for eliminating very deep contamination in the soil 11.
  • the well shown in FIG. 2 has a well pipe 40 which is divided into four areas 40.1-40.4 by three partition walls 41, 42 and 43.
  • the well pipe 40 can be continuously open-walled and can be sealed in the area of the partition walls 41-43 by external sealing sleeves 44.
  • the mutual distance between the two partition walls 41 and 42 is due to a distance between the two partition walls
  • Spacer tube 45 is determined, which is open at both ends and has a lateral opening 46 in the vicinity of the lower partition wall 42.
  • a pipe 47 is inserted, which is provided with a feed pump 48 in its part projecting into the upper well pipe area 40.1.
  • a reversing cylinder 49 which is open at both ends and whose interior is connected to the lateral opening 46 of the spacer tube 45.
  • a pneumatic cylinder / piston arrangement 51 is fastened via a holder 50, the piston of which can be acted upon on both sides in a manner not shown.
  • the piston rod 52 of the cylinder / piston assembly 51 is guided centrally through the switching cylinder 49 and carries an outer closure piece 53 for the lower open end and an inner closure piece 54 for the upper open end of the changeover cylinder 49.
  • the mutual distance between the two closure pieces 53 and 54 is greater than the length of the switching cylinder 49, so that the two end openings of the switching cylinder 49 can be closed alternately by means of the cylinder / piston arrangement 51.
  • the switching cylinder 49 is passed through an asymmetrical through opening of the partition wall 42.
  • liquid can be conducted from the interior of the spacer tube 45 into the well region 40.1 to above a nozzle body 56 which is arranged in an extension 55 of the well tube 40 and is provided with a filter pack and, after passing through the filter pack, partially in via a suction pump 57 a further pipe 58, which is guided through the two partition walls 41 and 42 and opens into a further pipe section 59, is conducted to the lowest shaft region 40.4.
  • the switching cylinder 49 allows in the position shown the piston rod 52 with the closure piece 53 in its closed position, an afterflow of groundwater from the well area 40.2 into the switching cylinder 49 and via the side outlet 46 into the spacer tube 45.
  • the inner closure piece 54 is in its closed position, and the outer closure piece 53 is lifted off. In this position, groundwater can flow from the lower well area 40.3 into the spacer pipe 45 via the switching cylinder 49.
  • either an upper liquid circuit 60 between the well areas 40.1 and 40.2 or a circuit 61 between the well areas 40.3 and 40.4 is thereby generated.
  • both liquid circuits 60 and 61 can be maintained simultaneously with the same or a different amount of liquid.
  • the arrangement according to FIG. 2 is therefore particularly suitable for soil layers which have a water-impermeable horizontal layer 62.
  • FIG. 3 shows a well pipe 70 which is likewise divided into four areas 70.1-70.5 by four partition walls 71-74.
  • two pipes 75 and 76 are provided, the pipe 75 being led through all four partition walls 71-74 to the lowest pipe area 70.5 and having a lateral outflow opening 77 at the area 70.4.
  • the tube 76 ends in the well region 70.3 and has a lateral outflow opening 78 in the region 70.2.
  • the pipe 75 has a feed pump 79 in the well pipe area 70.4 and the pipe 76 in the well pipe area 70.2 has a feed pump 80, the pumps 79 and 80 being arranged below the lateral outflow openings 77 and 78 of the two pipes 75 and 76, respectively.
  • the feed pump 79 draws in water from the lowest well area 70.5 via the lower end of the pipe 75 and then presses part of the water through the lateral outflow opening 77 into the well area 70.4, from where the water again reaches the surrounding soil 81 and there a liquid circuit 82 to the lower shaft area 70.5. A second part of the water sucked in by the pump 79 continues through the pipeline 75 to above the earth's surface 83 and can be fed there to a treatment or recycling device, not shown in any more detail.
  • the pump 80 sucks in liquid from the well area 70.3 through the lower end of the tube 76 and releases a part of this liquid through the lateral outflow opening 78 into the well area 70.2 and from there into the surrounding earth again, as a result of which a second liquid circuit 84 between the Well areas 70.2 and 70.3 and the surrounding soil. Another part of the sucked-in liquid is also transported by the pump 80 via the pipe 76 to the surface 83 of the earth and fed to a treatment or recycling device.
  • the proportions of the liquid which are circulated by the pumps 79 and 80 in the circuits 82 and 84 can be adjusted by valves 85 and 86 in the upper region of the pipes 75 and 76.
  • a liquid-impermeable wall 89 can also be introduced in the vicinity of the shaft at the level of the liquid level 87. This increases the outflow area of liquid reintroduced in the uppermost shaft area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Pipe Accessories (AREA)
  • Processing Of Solid Wastes (AREA)
EP93115224A 1993-05-21 1993-09-22 Procédé et dispositif pour influencer un liquide contenu dans le sol. Withdrawn EP0640742A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4316973A DE4316973A1 (de) 1993-05-21 1993-05-21 Brunnenrohr mit Trennwandungen
DE4316973 1993-05-21

Publications (2)

Publication Number Publication Date
EP0640742A2 true EP0640742A2 (fr) 1995-03-01
EP0640742A3 EP0640742A3 (fr) 1995-08-02

Family

ID=6488602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115224A Withdrawn EP0640742A3 (fr) 1993-05-21 1993-09-22 Procédé et dispositif pour influencer un liquide contenu dans le sol.

Country Status (2)

Country Link
EP (1) EP0640742A3 (fr)
DE (1) DE4316973A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108413A1 (fr) 2008-02-29 2009-09-03 Exxonmobil Upstream Research Company Systèmes et procédés destinés à réguler le flux dans un puits de forage
DE102015111232B3 (de) * 2015-07-10 2016-05-12 Umwelt-Geräte-Technik GmbH Vorrichtung zur Entnahme von Bodenlösungen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510581A (en) * 1923-03-23 1924-10-07 Boynton Alexander Washing tool
FR2314311A1 (fr) * 1975-08-07 1977-01-07 Bonnevalle Bernard Procede et appareillage pour le decolmatage des sondages et drains de captage d'eau
DE7909727U1 (de) * 1979-04-04 1979-07-05 Subterra Methoden Gmbh, 3000 Hannover Dichtung zur gegenseitigen abdichtung zweier konzentrisch zueinander verlaufender rohre, insbesondere eines brunnenrohres und eines darin verlaufenden steigrohres
DE3423917C2 (de) * 1984-06-26 1986-08-21 Rolf 1000 Berlin Schmitz Abpumpkammer
DE59000506D1 (de) * 1989-09-16 1993-01-07 Ieg Ind Engineering Gmbh Anordnung zum austreiben leichtfluechtiger verunreinigungen aus dem grundwasser.
DE3933426A1 (de) * 1989-09-16 1991-06-27 Ieg Ind Engineering Gmbh Anordnung zum reinigen von verunreinigtem grundwasser

Also Published As

Publication number Publication date
EP0640742A3 (fr) 1995-08-02
DE4316973A1 (de) 1994-11-24

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