EP3061875B1 - Dispositif et procede d'activation ou de nettoyage de puits - Google Patents

Dispositif et procede d'activation ou de nettoyage de puits Download PDF

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Publication number
EP3061875B1
EP3061875B1 EP16000438.8A EP16000438A EP3061875B1 EP 3061875 B1 EP3061875 B1 EP 3061875B1 EP 16000438 A EP16000438 A EP 16000438A EP 3061875 B1 EP3061875 B1 EP 3061875B1
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EP
European Patent Office
Prior art keywords
tube
external tube
recesses
filter
volume
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EP16000438.8A
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German (de)
English (en)
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EP3061875A1 (fr
Inventor
Peter Nillert
David Nillert
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Teftorec GmbH
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Teftorec GmbH
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    • 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
    • E03B3/15—Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs

Definitions

  • the invention relates to a device for activating or cleaning wells according to the preamble of claim 1, and a corresponding method using such a device.
  • silt, fine sand and other small mineral or organic particles that can be transported through the pores of the supporting grain scaffolds with the flowing groundwater at a correspondingly high velocity should also be introduced into the well from the adjacent layers of soil and thus pumped out.
  • a bowl-shaped support grain filter is to be generated in the transition region of the built-in annular space filter grain bed adjacent thereto natural soil by rinsing the small grains from the soil in this annular zone, which is composed of the coarser support grains of the soil, which is not built through the pore channels Filter grain bed fit. It is also desirable, behind the supporting grain filter to be produced very small grains in the adjacent soil, the so-called. Suffosionendigen grain sizes that can be transported at sufficiently large transport forces through the pore channels of the natural soil, also from a to rinse out the greatest possible radial environment around the borehole.
  • the filter grain bed produced at the fountain establishment is to be repeatedly cleaned or regenerated even after times of well operation to precipitations of mineral and / or organic origin resulting from the inflowing groundwater and sediment grains from the soil that have accumulated in the filter grain bed and have accumulated in the grain filter pores to remove again.
  • sufficiently large shear forces of the flowing groundwater must be generated in these locations in order to be able to transport the particles to be rinsed.
  • the particle flow which takes place with the groundwater flow through the pore channels must be stimulated by suitable measures, because the particles in the chaotically shaped flow paths constantly jam through the pores of the skeleton of the filter grains in the pore deflection angles and thus the particle transport is hindered or without special measures, which makes the trapped particles transportable again, comes to a standstill. Both goals are pursued through different measures and active principles of action.
  • the regeneration of wells includes all measures that are used to remove mineral and / or organic deposits from the well annulus and the adjacent mountains during a well operating period.
  • the methods used for this purpose follow the principle of separation or detachment of deposits and buildup of the filter material and the supporting grain skeleton of the adjacent mountains and the discharge of these particles through the well filter.
  • For the separation and detachment are different procedures and devices using hydromechanical, hydropneumatic and chemical principles of action known.
  • the increased flow has only a slight effect on the flow velocity in the annulus and in the adjacent mountains.
  • the annular space over the entire filter tube length is flowed radially from the upcoming mountains.
  • the groundwater enters the filter tube above and below the working chamber and flows in the annular space and in particular within the filter tube in the direction of the working chamber, wherein the groundwater flowing in the filter tube flows around the shut-off to enter the working chamber laterally.
  • the flow portion of the well water in the annulus area laterally or radially adjacent to the working chamber is reduced and reduces its flow velocity, which adversely affects the cleaning performance.
  • DVGW leaflet W 119 describes well-known extraction chambers for intensive desanding. With regard to these removal chambers, a sufficient radial flow of the chamber opening is assumed.
  • the chamber opening in the filter tube sealing bodies are required at the ends, which are designed either as sealing discs or as volume variable (inflatable) annular tubes.
  • a longitudinal extent of this seal body or its length in relation to the length of the open chamber is given no importance. Instead, with respect to these seal body only their sealing effect within the filter tube to limit the work or removal chambers classified as important.
  • Conventional devices for cleaning wells, such as after DE 81 20 151U are subject to the disadvantage that even at a considerably increased delivery rate, the cleaning performance in the annulus and in particular in the adjacent mountains is not optimal.
  • DE 40 17 013 C2 or DE 38 44 499 C1 are used for cleaning a gravel backfill and the adjacent mountains in the radial environment of a well, whereby by using pumps and separate chambers, a circulation flow between a plurality of chambers is generated. This pursues the purpose of effecting a flushing of the pore space in the filter gravel and in the adjacent mountains outside between the chambers delimited in the well filter tube, in order thereby to dissolve contaminants and deposits adhering to the gravel grains. If necessary, this can be accompanied by the addition of chemical cleaning agents.
  • a pore space stimulation can be realized by means of which the particles which are constantly jammed in the pore deflection angles can be released and made transportable.
  • Such pore space stimulation can be produced in various ways according to the prior art.
  • Known is the alternating reversal of the flow direction by short interruptions of the flow, z. B. by switching off the feed pump, whereby the water located in a riser above the extraction chamber flows back through the chamber into the pore space and pushes back the previously sucked particles. Since a switching process is characterized by a few minutes of pumping and an even shorter switch-off time, this is Frequency of the switching operations about 0.1 to 0.3 Hz and requires correspondingly long treatment times until a pore filter is sufficiently cleaned.
  • pore space stimulation consists in the continuous change of the flow direction from the filter grain bed in the sampling chamber by a corresponding device with its removal chamber along the filter tube over a portion of the filter tube is constantly reciprocated. As a result, the inflow direction changes with respect to the chamber, which activates activation of possible particle transport paths in the chaotic grain filter.
  • This type of pore space stimulation does not require any additional technique to generate and introduce pulses and may be used with extraction chambers with discs or pistons as limitations.
  • a device for activating or cleaning filter tube wells in which a removal chamber is formed between a first and a second volume body, from which water can be discharged from the filter tube well by means of a pumping device.
  • a compensating pipe is provided, which completely penetrates the removal chamber in the longitudinal direction of the device, said compensating pipe causes a hydraulic connection between the areas adjacent to each of the removal chamber opposite outer end faces of the two volume bodies.
  • the hydraulic connection through the compensating pipe causes an automatic pressure or volume flow compensation between the regions of the filter tube above and below the device in the event of an uneven flow to the device.
  • the device according to DE 10 2009 018 383 B4 has the disadvantage that a possible flow rate through the compensating pipe is limited and the provision of several such compensating pipes is structurally complex and expensive.
  • a device for activating or cleaning filter tube wells with a filter tube comprises a first and a second volume body, which are adapted with its outer diameter substantially to the inner diameter of the filter tube and on its outer peripheral surface each have sealing means by which a sealing effect between the solids and the inner wall of the filter tube is adjustable, a removal chamber, between the first and second Volume body and the inner wall of the filter tube is formed, wherein the removal chamber can be hydraulically connected to a pumping device.
  • WO 2005/007980 A1 discloses a well for recovering, observing and / or lowering groundwater having a standpipe having at least one filter tube portion and having at least one pump disposed in the standpipe.
  • a spraying device for spraying the filter tube region and / or a well region, which is adjacent to the filter tube region, is assigned to the filter tube region.
  • the spraying device is connected to at least one pressure line through which the spraying device is supplied with a medium to be atomized.
  • the invention has for its object to provide a device and a method for activating or cleaning wells and a corresponding method, with or with the improved activation or cleaning performance due to a greater radial depth effect within the aquifer of the well is feasible.
  • a device is used for activating or cleaning filter tube wells with a filter tube, and comprises a first volume body and a second volume body, these volume bodies are adapted with their respective outer diameter substantially to the inner diameter of the filter tube and each have on its outer peripheral surface sealing means by means of which a sealing effect with respect to the inner wall of the filter tube can be achieved.
  • the device comprises at least one removal chamber, which is formed between the first and the second volume body and the inner wall of the filter tube.
  • the removal chamber may be hydraulically connected to a pumping device, wherein during operation of the pumping device water can be pumped out of the removal chamber.
  • two removal chambers in the form of an upper removal chamber and a lower removal chamber are formed in the longitudinal direction of the device.
  • an outer tube is provided, wherein the solid bodies are attached to an outer peripheral surface of the outer tube.
  • an intermediate tube is arranged, wherein between the outer tube and the intermediate tube, an outer annular space is formed. The operation of this outer annulus is explained below in detail.
  • the present invention is based on the essential finding that a greater radial penetration depth in the soil, which is adjacent to the filter tube of the well, is possible by cooperation of the upper sampling chamber and the lower sampling chamber with respect to discharging or pumping out water from the filter tube is.
  • the cylindrical zone of action of the radial depth effect in the drilling brine to the adjacent Aquifer in enlarged.
  • the two zones of action of the upper removal chamber and the lower removal chamber in this radially remote zone of pore cleaning combine to form a coherent effective area with sufficiently large flow forces which can extend over the entire axial length of the device. It is advantageous that the upper removal chamber and the lower removal chamber are each connected by separate hydraulic connections to the pumping device.
  • the device according to the invention is intended, in particular, to be used as a "moving chamber", wherein it is continuously moved during operation of the pumping device within the filter tube of a filter tube well.
  • a pore space stimulation within a filter grain bed of the well and the adjacent mountains can be improved by providing a third central volume body, which is arranged between the upper sampling chamber and the lower sampling chamber.
  • the third volume body is in the same way as the first and second volume body with its outer diameter substantially adapted to the inner diameter of the filter tube and has on its outer peripheral surface sealing means with which a sealing effect with respect to the inner wall of the filter tube is realized.
  • the flow direction at a certain point of the well changes by up to 180 °. This has the consequence that in a shorter time a large number of particles are transported through the pore channels of the filter grain bed or the adjoining mountains.
  • a third central volume body may be provided, which is arranged between the upper and lower removal chamber.
  • the third volume body is adapted with its outer diameter substantially to the inner diameter of the filter tube, and has on its outer peripheral surface sealing means with which a sealing effect with respect to the inner wall of the filter tube can be adjusted.
  • the third central volume body in the axial direction of the device is formed as long as the first and second volume body.
  • the respective volume bodies may be formed segment-like in the longitudinal direction of the device, e.g. in the form of disc-shaped segments. These segments of the respective solids can be pushed onto the outer tube of the device and fixed thereto in a predetermined position. In this case, then determines a number of segments an axial extent of a respective volume body along the longitudinal axis of the device.
  • the upper extraction chamber is hydraulically connected to either the outer annulus or with the interior of the intermediate tube
  • the lower extraction chamber is hydraulically connected either to the interior of the intermediate tube or with the outer annulus, so that the outer annular space and the intermediate tube for the removal chambers each form separate hydraulic connections to the pumping device.
  • the outer annular space which is formed between the outer tube and the intermediate tube
  • the interior of the intermediate tube each be designed as a hydraulic connection, through which a respective extraction chamber is hydraulically connected to the pumping device.
  • recesses are formed in the wall of the outer tube adjacent to the removal chamber, which extend parallel to the longitudinal axis of the outer tube.
  • recesses are formed which extend parallel to the longitudinal axis of the outer tube and in particular opposite to the recesses of the outer tube.
  • connecting channels lead from the recesses of the outer tube radially through the outer annular space to the respective opposite recesses of the intermediate tube, so that this removal chamber is hydraulically connected to the interior of the intermediate tube and hydraulically separated from the outer annulus.
  • the dimensions of the outer annulus and the diameter of the intermediate tube are matched to one another such that during operation of the pumping means a matching throughput for the upper and lower extraction chamber. It is also advantageous if the intermediate tube and the outer tube at an upper end of the outer tube can be hydraulically connected via a common connection coupling with the pumping device.
  • the outer annular space serves as a hydraulic connection between the outer end faces of the outer tube and is part of such a hydraulic connection.
  • the outer tube is open at its outer end faces.
  • an inner tube is arranged coaxially within the outer tube, which also runs inside the intermediate tube. Accordingly, an inner annulus is formed between the inner tube and the intermediate tube, the upper sampling chamber being hydraulically connected to either the inner annulus or the interior of the intermediate tube, and the lower sampling chamber being hydraulically connected to either the interior of the intermediate tube or the inner annulus is. Accordingly, the inner annular space and the inner tube for the two extraction chambers each form separate hydraulic connections to the pumping device.
  • recesses may be formed in the wall of the outer tube adjacent to the removal chambers, which extend parallel to the longitudinal axis of the outer tube.
  • recesses may be formed, which are parallel to the longitudinal axis of the outer tube and opposite to the recesses of the outer tube.
  • connecting channels lead from the recesses of the outer tube radially through the outer annulus to the respective opposite recesses of the intermediate tube, so that the upper sampling chamber is hydraulically connected to the inner annulus and hydraulically separated from the outer annulus.
  • the inner tube may extend within the outer tube in the axial length of the device at least to the region of the lower sampling chamber, wherein in the wall of the inner tube adjacent to the lower sampling chamber recesses are formed, which are parallel to the longitudinal axis of the outer tube and opposite extend to the recesses of the outer tube.
  • recesses are formed, which are parallel to the longitudinal axis of the outer tube and opposite extend to the recesses of the outer tube.
  • the last-mentioned embodiment of the invention is characterized in that three tubes are inserted into one another coaxially, namely an outer tube, an intermediate tube and an inner tube.
  • an outer annular space and an inner annular space are formed as explained within the outer tube.
  • the outer annular space which is formed between the outer tube and the intermediate tube, then serves in conjunction with an annular space between the outer tube and the inner tube as a hydraulic connection between the outer end faces of the outer tube.
  • the inner annulus as well as the interior of the inner tube each perform the function of a separate hydraulic connection to connect the upper and lower sampling chamber with the pumping device. In this way, a technically simple and at the same time robust tool can be realized with comparatively few components for use on the construction site in order to activate or clean wells.
  • the intermediate tube can pass through the outer tube from an upper end of the device forth to about a central region thereof.
  • the inner tube can pass through the outer tube substantially along its entire length.
  • the intermediate tube in the axial direction of the device is formed only as long as it makes the inner annulus formed between the intermediate tube and the inner tube, in its function as a hydraulic connection for the upper sampling chamber with the pumping device required.
  • the inner tube is also disposed adjacent to the lower sampling chamber, so that through the recesses formed in the walls of the outer tube and the inner tube, in conjunction with the interposed connecting channels, the inner tube as a hydraulic connection for the lower sampling chamber can serve with the pumping device.
  • the three tubes namely the outer tube, intermediate tube and inner tube
  • the dimensions of the inner annular space and the diameter of the inner tube are matched to one another such that during operation of the Pumping device sets a matching throughput for the upper and lower sampling chamber.
  • the intermediate tube and the inner tube at an upper end or an upper end side of the outer tube can be hydraulically connected via a common connection coupling with the pumping device.
  • the respective volume body can be attached to an outer peripheral surface of the outer tube, wherein the first, second and / or third volume body relative to the outer tube in the direction of a longitudinal axis of the device are displaceable and fixable in a predetermined position on the outer tube.
  • a displacement of the volume body relative to the outer tube in the direction of a longitudinal axis of the device is possible.
  • the solids can be fixed to the outer tube by suitable clamping devices or the like.
  • the first, second and / or third volume body in the longitudinal direction of the device is formed like a segment, wherein the segments are pushed onto the outer tube and fixed thereto in a predetermined position, preferably, that an axial extent of a solid by the number its segments is variable.
  • the upper and lower removal chamber may be formed approximately in a central region of the device, wherein the adjoining first and second volume body extending in the direction of the outer end sides of the outer tube and thus are attached end to the outer tube.
  • an axial length of the recesses formed in the walls of the individual tubes, and an axial length of the adjacent thereto connecting channels may be greater than an effective axial height of an extraction chamber adjacent thereto.
  • these recesses and the associated connection channels are made in the axial direction of the device so long that they adjoin each other in the symmetrical center of the device, and from there to the respective end-side end faces of the device. If the bulbs are mounted on the outer tube of the device, it is possible that a part of the recesses formed in the outer tube will be covered by the bulbs.
  • the sealing means may have open-cell foam or bristles on the outer circumferential surfaces of the solid bodies, for the purpose of a sufficient sealing effect with the inner wall of the filter tube.
  • the open-cell foam or the bristles are designed in such a way that to ensure the desired sealing effect on the one hand fill the space between the bars of a Wickeldrahtfilters into the filter slots and on the other hand tight against the inner tube wall on the inside smooth filter tubes.
  • the nature of the foam or bristles is selected to provide adequate resistance to wear and excessive wear when the device is moved along the filter tube.
  • the sealing means or the solid bodies can be designed such that they are formed from the open-cell foam or from the bristles or consist thereof.
  • the sealing means and / or the solid bodies can have a variable volume.
  • the sealing means or the solids can be increased in volume by supplying a fluid, for example compressed air or water, and thereby being widened radially outwards.
  • a fluid for example compressed air or water
  • This is useful in a stationary operation of the device within the Filterrohrbrunnens, ie at a fixed and predetermined position within the filter tube, useful because the desired sealing effect between the solids and the filter tube is optimized by the radial expansion of the sealant or the solid.
  • a still further optimized sealing effect can be achieved in that the sealing means or the solid bodies have a variable volume, wherein on the associated outer circumferential surface of a flexible layer of foam, or bristles as explained above, are attached.
  • An additional advantage to this combination is that an outer peripheral surface of the variable volume by attaching the flexible layer of foam, or by the provision of the bristles, is less susceptible to damage when in contact when supplying a fluid in the variable volume comes with the filter tube.
  • the outer tube or the inner tube may be provided in the region of a lower end side of the device with connecting means to attach other equipment for well treatment on the device.
  • equipment can be, for example, a pulse generator, are introduced by the hydromechanical pulses in the well.
  • a high-pressure hose for feeding the pulse generator can be guided, for example, through the annular space between the outer tube and the intermediate tube or the inner tube.
  • the invention also relates to a method for activating or cleaning filter tube wells with a filter tube, wherein a device according to the aforementioned embodiments and possibilities along the filter tube is continuously moved upwards or downwards and thereby promoted by the pumping means water from the two sampling chamber of the device and from the fountain is discharged.
  • Fig. 3 shows a simplified representation of a device 1 according to the invention in a longitudinal section, when the device is placed in a filter tube well with a filter tube 10.
  • the filter tube 10 is formed in a known manner and allows water to flow radially from the outside through the filter tube 10, such as, as in Fig. 3 indicated by the arrow R.
  • the device 1 comprises a first (upper) volume body 12 and a second (lower) volume body 13 which are adapted with their respective outer diameter substantially to the inner diameter of the filter tube 10.
  • first (upper) volume body 12 and a second (lower) volume body 13 which are adapted with their respective outer diameter substantially to the inner diameter of the filter tube 10.
  • each sealing means 16 are provided, by means of which a sealing effect with respect to the inner wall of the filter tube 10 can be achieved.
  • two removal chambers are formed in the longitudinal direction of the device, namely an upper removal chamber 18.1 and a lower removal chamber 18.2.
  • These two removal chambers 18.1, 18.2 are hydraulically separated from each other and each connected by separate hydraulic connections to a pumping device 20.
  • the upper removal chamber 18.1 is connected by a hydraulic connection 22 to the pumping device 20, wherein the lower removal chamber 18.2 is connected by a hydraulic connection 24 to the pumping device 20. Details of these hydraulic connections between the respective sampling chambers 18.1, 18.2. and the pumping device 20 are explained below.
  • the device 1 has an outer tube 26 which extends along a longitudinal axis L of the device 1.
  • the first and second volutes 12, 13 are attached to an outer peripheral surface of the outer tube 26 and fixed there at a predetermined position.
  • a plurality of spacers 28 (FIG. fig. 4 ), which are respectively arranged on both sides of a volume body and thereby set the volume body at a predetermined axial position with respect to the outer tube 26.
  • recesses are formed along the longitudinal axis L of the device 1, namely in the form of longitudinal slots.
  • These recesses A 26 in the wall of the outer tube 26 are provided in particular in the region of the upper and lower removal chamber 18.1, 18.2 and allow a radial inflow of well water into the device 1. Details of this radial inflow are explained below.
  • the device 1 may have a third central volume body 14 which is mounted on an outer peripheral surface of the outer tube 26 in the same manner as the volume bodies 12, 13.
  • the third central volume body 14 is located on the outer tube 26 between the upper volume body 12 and the lower volume body 13.
  • an effective height h of the upper sampling chamber 18.1 is determined.
  • the lower removal chamber 18.2 the effective height h in the axial direction by a distance of the third volume body 14 is determined by the second volume body 13.
  • the removal chambers 18.1, 18.2 formed with their respective heights h in the axial direction of the device 1 so large that a certain throughput of well water during operation of the pumping device 20 can be sucked or discharged from the filter tube 10.
  • FIG. 4 An embodiment of the spacers 28 for positioning the solids on the outer tube 26 is in the Fig. 4 illustrating the outer tube in a simplified perspective view.
  • the spacers are omitted for simplicity.
  • the spacers may be formed in the form of a mounting clamp 29 or the like.
  • the spacers in the form of so-called annular baskets 30 are formed.
  • a respective volume body is bordered on both sides by a ring cage 30 and a mounting clamp 29.
  • the central volume body 14 is located between two annular baskets 30 and is thereby fixed in the axial direction of the outer tube 26.
  • the first volume body 12 and the second volume body 13 are each located between a ring cage 30 and a fastening clamp 29u arranged on a lower end face 27u of the outer tube 26, and are thereby axially fixed to the outer tube 26.
  • Fig. 5 illustrates an embodiment of the ring baskets 30.
  • a ring cage 30 is shown in a side view, wherein Fig. 5.2 a ring cage 30 along a section AA of Fig. 5.1 shows.
  • Fig. 5.3 shows the ring cage 30 of Fig. 5.1 in a perspective view.
  • the ring cage 30 consists of two ring elements 32 which are spaced from each other by a plurality of webs 34.
  • An inner diameter of the ring elements 32 is adapted to an outer diameter of the outer tube 26, such that the annular baskets 30 can be pushed onto an outer peripheral surface of the outer tube 26 without jamming.
  • suitable clamping devices it is possible to define a ring cage 30, and thus also a solid, at a predetermined axial position of the outer tube 26.
  • a synopsis of Fig. 3 , of the Fig. 4 and the Fig. 5.3 illustrates that a spacing of the two ring elements 32 of a ring cage 30 has a height h a respective extraction chamber defined, at least in the embodiment according to Fig. 3 , For this reason, the representation of Fig. 4 also provided that a ring cage 30 is attached to the outer tube 26 respectively adjacent to the recesses A 26 . As a result, well water can flow in radially between the ring elements 32 from the outside into the outer tube 26.
  • the mounting clips 29 o, 29 u can be clamped at any desired positions on the outer peripheral surface of the outer tube 26, whereby the Bulk body 12, 13, 14 and the annular baskets 30 in different predetermined axial areas of the outer tube 26 can be fixed.
  • Fig. 6 shows various views of the device 1 and associated pipe elements.
  • Fig. 6.1 shows the already mentioned outer tube 26 in a side view, wherein the volume body are omitted for simplicity.
  • the outer tube 26 is also in the Fig. 7 shown again, namely in a side view ( Fig. 7.1 ), in a cross-sectional view along the line AA of Fig. 7.1 (Fig. 7.2 ), and in a cross-sectional view of the line BB of Fig. 7.1 (Fig. 7.3 ).
  • the cross-sectional view according to Fig. 7.2 illustrates that the recesses A 26 along the circumference of the outer tube 26 are formed in four segments, which are each spaced by about 90 ° from each other.
  • the side view of Fig. 7.1 in that the recesses A 26 extend over a large part of the axial length of the outer tube 26.
  • Fig. 6.2 shows a longitudinal sectional view along the line AA of Fig. 6.1 , It can be seen that within the outer tube 26, an intermediate tube 36 is received, which extends approximately to the middle of the outer tube 26.
  • the intermediate tube 36 is also in the Fig. 8 shown, namely in a side view ( Fig. 8.1 ), and in a cross-sectional view along the line AA of FIG Fig. 8.1 (Fig. 8.2 ).
  • the cross-sectional view according to Fig. 8.2 illustrates that in a wall of the intermediate tube (36) also recesses A 36 are formed, namely along the circumference of the intermediate tube 36 in four areas, which are spaced about 90 ° to each other.
  • an outer annular space 38 (see. Fig. 6.5 ) educated.
  • the intermediate tube 36 is positioned within the outer tube 26 such that its recesses A 36 are respectively disposed opposite to the recesses A 26 , which are formed in the wall of the outer tube 26.
  • the oppositely disposed recesses A 26 and A 36 are interconnected by connecting channels 40, namely in the form of so-called rectangular tubes, which are received within the outer annular space 38.
  • the rectangular tubes 42K for connecting the recesses A 26 with the recesses A 36 are in the Fig. 10 represented there, namely in a plan view ( Fig. 10.1 ), in an end view ( Fig. 10.2 ), in a side view ( Fig. 10.3 .) and in a perspective view ( Fig. 10.4 ).
  • these connecting channels 40 in the form of rectangular tubes 42K through which, as explained, the recesses A 26 are connected to the recesses A 36 , it should be pointed out that these are hydraulically separated from the outer annular space 38.
  • a height h 1 of the rectangular tubes 42K see. Fig.
  • an axial length of the rectangular tubes 42K is chosen substantially coincidentally as an axial length I of the recesses A 26 (see. Fig. 7.1 ).
  • FIG. 6.2 The longitudinal section view of Fig. 6.2 further clarifies that within the outer tube 26 also coaxially an inner tube 44 is arranged, wherein the inner tube 44 extends within the already mentioned intermediate tube 36.
  • An axial length of the inner tube 44 is selected such that it passes through the outer tube 26 substantially in its entire axial length.
  • an inner annular space 46 (cf. FIG. 2) between the inner tube 44 and the intermediate tube 36 is provided.
  • Fig. 6.4 educated.
  • a further annular space 48 In the longitudinal section of the outer tube 26, which is not penetrated by the intermediate tube 36, between the inner tube 44 and the outer tube 26, a further annular space 48 (see. Fig. 6.3 ) educated.
  • the inner tube 44 is also in the Fig. 9 shown, namely there in a side view ( Fig. 9.1 ), and in a cross-sectional view along the line AA of FIG Fig. 9.1 (Fig. 9.2 ).
  • the last-mentioned cross-sectional view illustrates that in a wall of the inner tube 44 also recesses A 44 are formed, namely along the circumference of the inner tube 44 in four areas, which are spaced from each other by 90 °.
  • the inner tube 44 is disposed within the outer tube 26 such that the recesses A 44 in the wall of the inner tube 44 are each opposite to the recesses A 26 in the wall of the outer tube.
  • FIG. 11 there are a rectangular tube 42L in a plan view ( Fig. 11.1 ), in an end view ( Fig. 11.2 ), in a side view ( Fig. 11.3 ) and in a perspective view ( Fig. 11.4 ).
  • a height h 2 of the rectangular tubes 42L corresponds to a height h 2 of the rectangular tubes 42L (see. Fig. 11.3 ) exactly one radial height of the annular space 48 between the inner tube 44 and outer tube 26.
  • a tight hydraulic connection between the recesses A 26 and A 44 is possible in order to provide a hydraulic separation of to achieve the annulus 48.
  • cross-sectional views also illustrate, in particular, the position of the respective recesses in the tubular elements relative to one another, and also the positioning of the rectangular tubes 42K, 42L within the respective annular spaces to ensure a hydraulic connection between the respectively opposite recesses of the tubular elements.
  • the outer tube 26 is formed open on its upper end side 27o and on its lower end side 27u. This has the consequence that a hydraulic connection between these end faces 27o, 27u of the outer tube 26 which passes through the outer annular space 38 and the annular space 48 and in the Fig. 3 symbolized by dashed lines HV.
  • This hydraulic connection HV allows a compensation flow between the outer end faces of the outer tube 26, when the device 1 should be flown unevenly on its upper side and on its underside in the radial direction.
  • this hydraulic connection HV which as explained by the outer annular space 38 and the annular space 48 extends, is not affected by the rectangular tubes 42K and 42L.
  • the representations in the Fig. 3 and Fig. 6.2 illustrate that both the intermediate tube 36 and the inner tube 44 are led out of the outer tube 26 at the upper end side 27 o, wherein the intermediate tube 36 and the inner tube 44 are then connected via a common connection coupling 50 and a connecting line 52 together to the pumping device 20.
  • the connecting line 52 is preferably flexible and designed a Length compensation to allow movement of the device 1 within the filter tube 10 along its longitudinal axis L, possibly also over long distances, without restriction.
  • the wall of the outer tube 26 perforations are formed along the circumference, namely in the form of holes 54.
  • These holes are in the illustration of Fig. 7 to recognize, and in particular in the cross-sectional view of Fig. 7.3 .
  • a spacer in the form of an annular disc 56 which serves as a separate component in the Fig. 12 is shown in a plan view.
  • recesses 58 are formed, which adjoin the holes 54 on the upper end face 27o of the outer tube 26.
  • the above-described holes 54 at the upper end face 27o of the outer tube 26 serve in conjunction with the annular disc 56 and its recesses 58 for the purpose that particles, especially sand, sediments or similar granular contaminants, can pass therethrough to subsequently through the outer annulus 38 of the device 1 to fall down.
  • the above the device 1 in the well water entering and sinking particles are promoted in this way with the flowing from the outside through the holes 54 water through the device 1 and the outer annular space 38 down into the well sump. Due to the open configuration of the outer tube 26 on its lower end side 27u, these particles can then emerge completely downwards out of the device 1. In this way, particles are prevented from accumulating on an upper side of the device 1.
  • the solid bodies 12, 13, 14 are in the form of segments S, ie in the form of disk-shaped elements which can be stacked in a plurality and then jointly form a respective solid.
  • the first volume body 12 is formed for example by two segments S 12/1 and S 12/2 , which are mounted together on the outer peripheral surface of the outer tube 26 and in the longitudinal axis L of Adjacent device 1. A separate attachment of the two segments S 12/1 and S 12/2 at their interface is not required because the first volume body 12 is bound as such from above through the annular disc 56 and from below through a ring cage 30 and thus held together.
  • the second lower volume body 13 may be formed of two segments, namely by a segment S 13/1 and S 13/2 .
  • the third central volume body 14 can also be designed in the form of individual segments.
  • the third solid 14 consists of three segments, namely the segments S 14/1 , S 14/2 and S 14/3 . Also for these segments of the third volume body 14 is that they are mounted adjacent to each other on the outer peripheral surface of the outer tube 26, with a separate connection at the interfaces of these segments is not required because the central volume body 14 bounded at its ends by ring baskets 30 and in this manner is fixed to the outer tube 26.
  • first volume body 12 and / or the second volume body 13 may also have three or more segments.
  • the device 1 it is possible to change a position of the respective volume body 12, 13, 14 on the outer peripheral surface of the outer tube 26 and thereby adjust, for example, a height h of the upper sampling chamber 18.1 and / or the lower sampling chamber 18.2, depending on the purpose of the Device 1 and the type of well to be treated.
  • Such a change in position of the solids on the outer tube 26 in the axial direction of the device 1 can be easily achieved in such a way that the volume body parallel to the longitudinal axis of the device 1 on the outer tube 26th are displaceable.
  • These spacers can also be moved along the outer tube 26 in its axial direction, wherein after reaching a predetermined position for the solid these spacers be clamped to the outer tube 26, thereby to hold the solid at its predetermined position with respect to the outer tube 26.
  • a change in a height of the upper or lower removal chamber 18.1, 18.2 can be carried out as described by moving the volume body in the axial direction with respect to the outer tube 26.
  • a variable positioning, in particular of the upper and lower volume body 12, 13 on the outer peripheral surface of the outer tube 26 is particularly possible because the recesses A 26 , A 36 and A 44 along the longitudinal axis of the device 1 are sufficiently long.
  • the upper and lower sampling chamber can be variably formed at the locations of the outer tube 26, which are not enclosed or covered by the solids. In this way, the device 1 can be retrofitted in a structurally simple way in all conceivable types of intensive care chambers.
  • the embodiment of the device 1 according to the Fig. 3 can be modified so that the third central volume body 14 is not mounted on the outer tube 26 and is omitted accordingly.
  • Such a modification is in the illustration of Fig. 13 shown similar to a longitudinal section through the device 1 to Fig. 3 illustrated when the device is inserted into the filter tube 10 of a well.
  • the embodiment of the device 1 according to FIG. 13 Overlay the upper sampling chamber 18.1 and the lower sampling chamber 18.2 total to a common large sampling chamber 18, between the end faces of the two solids 12, 13 in the central region the device 1 is formed.
  • a fixing of the two solid bodies 12, 13 and the annular baskets 30 provided therebetween on the outer tube 26 in its axial direction takes place in the same way as in Fig.
  • the device 1 is completely introduced into a filter tube well or in its filter tube 10. This is simplified as explained in the Fig. 3 and the Fig. 13 illustrated for various embodiments of the device 1.
  • the filter tube 10 is surrounded by an annular space region 62 which is filled with a gravel filling.
  • the annulus area 62 immediately adjacent to the filter tube 10 includes an inner trailing edge 62 i , wherein radially adjacent to an outer trailing edge 62 a is provided.
  • the annulus area 62 includes a double debris, which differs from each other in their permeability.
  • the annulus area 62 is with its two Hinter whereened also in the representation of Fig. 14 shown in simplified form.
  • the annulus area 62 is surrounded by adjacent mountains 64.
  • the device 1 is flowed out of the mountains 64 radially from a volume of water.
  • a hydraulic compensation flow between the end faces of the device 1, if the device 1 should be flowed at their end faces by different sized volumes of water causes the hydraulic connection HV through the outer annular space 38, an automatic suction flow control, which has the consequence that approximately equal amounts of water can enter into the upper extraction chamber 18.1 and 18.2.
  • water is also pumped out or discharged from the lower removal chamber 18. 2, namely by the hydraulic connection 24 formed by the rectangular tubes 42 L and the inner of the inner tube 44.
  • These hydraulic connections 22, 24 are hydraulically separated from each other, it being ensured by means of a corresponding dimensioning of the pipe elements involved that water from the upper sampling chamber 18.1 and the lower sampling chamber 18.2 is always pumped out at the same throughput.
  • the entire volume of water Q which is pumped out of the well by means of the device 1, is divided equally between Q / 2 and the two extraction chambers 18.1, 18.2.
  • the hydraulic connection HV which is ensured by the outer annular space 38 of the device 1 between its end face, causes as explained an automatic self-control with respect to a compensation flow between the end faces of the device. Furthermore, this simplifies an axial movement or displacement of the device 1 within the filter tube 10, because the flow resistance is reduced thanks to the hydraulic connection HV through the outer annular space 38.
  • a compensating flow within the device 1 through its outer annular space 38 and a pumping of water through the hydraulic connections 22, 24 can take place simultaneously and without mutual interference, because these flow channels are hydraulically separated from each other.
  • FIG. 3 and 13 are indicated by the reference numerals I and II different areas in which the water flows from the mountains 64 through the annulus area 62 in the direction of the removal chambers 18.1, 18.2.
  • the water flows approximately parallel to the longitudinal axis L of the device 1 in the direction of a respective extraction chamber.
  • areas II there is a gentle change in direction of the water flow, in order finally to enter radially into a respective extraction chamber 18.1, 18.2.
  • At the level of the line U there is a reversal of the water flow in the opposite direction.
  • the representation of Fig. 14 clearly illustrates the lines of water flow in the direction of the device 1 and the resulting change in direction of the water flow.
  • the device 1 is particularly suitable as a so-called "moving chamber", wherein it is continuously moved along the filter tube 10, during which the pumping device 20 is in operation and thereby as explained water is pumped out of the two sampling chambers 18.1, 18.2.
  • Such an operation of the device 1 leads to an extremely effective pore space stimulation within the Schuell the annulus area 62 and the mountains 64, because the water flow, relative to a certain point within the mountains 64 and the annular space 62, then changes by up to 180 ° , As a result, 64 more particles can be discharged through the pore channels of the annulus 62 and the mountains.
  • the said direction reversal of the flow of 180 ° takes place in particular in the areas II, which in the representations of Fig. 3 and Fig. 13 are symbolized.
  • connecting means 58 On the lower end side 27u of the outer tube 26 connecting means 58 (see. Figure 4 ), which allow the attachment of other equipment to the device for well treatment.
  • the connecting means 58 may be formed as a ring element, a hook or the like.
  • the other equipment for well treatment may be a pulse generator, are introduced by the hydromechanical pulses in the well.
  • the connection means 58 are only in the Fig. 4 shown, but in Fig. 3 and Fig. 13 Not shown.
  • the device 1 in a structurally simplest manner to variably set an axial height of the solids and a respective height of the removal chambers and thus one ensure optimal use of the device 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Sampling And Sample Adjustment (AREA)

Claims (15)

  1. Dispositif (1) d'activation ou de nettoyage des puits à tube-filtre avec un tube-filtre (10), comportant
    un premier corps de volume (12) et un second corps de volume (13), les corps de volume (12; 13) avec leur diamètre extérieur respectif pouvant être adapté sensiblement au diamètre intérieur du tube-filtre (10) et comportant des moyens d'étanchéité (16) à leur surface périphérique extérieure par lesquels un effet d'étanchéité pouvant être obtenu relatif à la paroi intérieure du tube-filtre (10), et
    au moins une chambre de prélèvement (18) qui peut être formé entre le premier et le second corps de volume (12; 13) et la paroi intérieure du tube-filtre (10), la chambre de prélèvement (18) pouvant être liée hydrauliquement avec un moyen de pompage (20) et de l'eau étant pompable de la chambre de prélèvement (18) lors du fonctionnement du moyen de pompage (20),
    deux chambres de prélèvement (18.1; 18.2) sous forme d'une première chambre de prélèvement supérieure (18.1) et une deuxième chambre de prélèvement (18.2) inférieure étant formé entre le premier et le second corps de volume (12; 13) dans le sens longitudinal du dispositif (1) qui sont séparées hydrauliquement l'une de l'autre et peuvent être liées au moyen de pompage (20) par des liaisons hydrauliques séparées,
    et un tube intermédiaire étant agencé,
    caractérisé en ce
    que le long de l'axe longitudinal du dispositif (1) un tube extérieur (26) est prévu, les corps de volume (12; 13) étant fixable à une surface périphérique extérieure du tube extérieur (26), et que dans le tube extérieur (26) le tube intermédiaire (36) est agencé coaxialement, un espace annulaire extérieur (38) étant formé entre le tube extérieur (26) et le tube intermédiaire (36).
  2. Dispositif (1) selon la revendication 1, caractérisé en ce que dans le tube extérieur (26) un tube intérieur (44) est agencé coaxialement, le tube intérieur (44) s'étendant dans le tube intermédiaire (36) et ainsi un espace annulaire intérieur (46) étant formé entre le tube intérieur (44) et le tube intermédiaire (36), la chambre de prélèvement supérieure (8.1) étant liée hydrauliquement soit avec l'espace annulaire intérieur (46) soit avec l'intérieur du tube intermédiaire (36), et la chambre de prélèvement inférieure (18.2) étant liée hydrauliquement soit avec l'intérieur du tube intermédiaire (36) soit avec l'espace annulaire intérieur (46) en sorte que l'espace annulaire intérieur (46) et le tube intérieur (44) pour les chambres de prélèvement (18.1; 18.2) chacun forment des liaisons hydrauliques séparées (22; 24) au moyen de pompage (20).
  3. Dispositif (1) selon la revendication 2, caractérisé en ce que dans la paroi du tube extérieur (26) adjacente aux chambres de prélèvement (18.1; 18.2) des évidements (A26) sont formées s'étendant parallèles à l'axe longitudinal (L) du tube extérieur (26), dans la paroi du tube intermédiaire (36) adjacente à la chambre de prélèvement supérieure (18.1) des évidements (A36) étant formées s'étendant parallèles à l'axe longitudinal (L) du tube extérieur (26) et opposées aux évidements (A26) du tube extérieur (26), des canaux de liaison (40) conduisant à partir des évidements (A26) du tube extérieur (26) radialement à travers l'espace annulaire extérieur (38) aux évidements (A36) opposées du tube intermédiaire (36) en sorte que la chambre de prélèvement supérieure (18.1) est liée hydrauliquement avec l'espace annulaire intérieur (46) et est séparée hydrauliquement de l'espace annulaire extérieur (38), préférablement, que les canaux de liaison (40) entre les évidements (A), qui sont formées dans les différents tubes l'un en face de l'autre, sont chacun formés par des tubes rectangulaires (42K; 42L), s'étendant avec leur axe longitudinal parallèle à l'axe longitudinal (L) du dispositif (1), et s'étendant radialement entre les évidements (A) opposées pour former une liaison hydraulique entre eux.
  4. Dispositif (1) selon la revendication 2 ou 3, caractérisé en ce que le tube intérieur (44) s'étend dans le tube extérieur (26) en longueur axiale au moins jusque dans la zone de la chambre de prélèvement inférieure (18.2), dans la paroi du tube intérieur (44) adjacente à la chambre de prélèvement inférieure (18.2) des évidements (A44) étant formées s'étendant parallèle à l'axe longitudinal (L) du tube extérieur (26) et opposées aux évidements (A26) du tube extérieur (26), des canaux de liaison conduisant à partir des évidements (A26) du tube extérieur (26) radialement à travers l'espace annulaire (48) formé entre le tube intérieur (44) et le tube extérieur (26) aux évidements (A44) opposées du tube intérieur (44) en sorte que la chambre de prélèvement inférieure (18.2) est liée hydrauliquement avec l'intérieur du tube intérieur (44) et est séparée hydrauliquement de l'espace annulaire (48) entre le tube intérieur (44) et le tube extérieur (26), préférablement, que le tube intermédiaire (36) intercale le tube extérieur (26) à partir d'une extrémité supérieure du dispositif (1) jusqu'à environ une partie centrale de celle-ci, plus préférablement, que le tube intérieur (44) intercale le tube extérieur (26) sensiblement sur toute sa longueur.
  5. Dispositif (1) selon l'une quelconque des revendications 2 à 4, caractérisé en ce que le tube extérieur (26) est ouvert sur ces faces frontales extérieures (27o, 27u), la liaison hydraulique (HV) s'étendant entre les faces frontales extérieures (27o, 27u) du tube extérieur (26) à travers l'espace annulaire extérieur (38) et l'espace annulaire (48) formé entre le tube intérieur (44) et le tube extérieur (26).
  6. Dispositif (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que dans la zone des chambres de prélèvement (18.1; 18.2) sur la surface périphérique extérieure du tube extérieur (26) chacun des écarteurs (28) sont montés par lesquels un espacement des corps de volume (12; 13) l'un à l'autre et ainsi une arrivée radiale de l'eau dans les chambres de prélèvement (18.1; 18.2) est garanti, préférablement, que les écarteurs (28) relatifs au tube extérieur (26) peuvent être déplacés dans la direction de l'axe longitudinal du dispositif (1) et sont fixables au tube extérieur (26) dans une position prédéterminée.
  7. Dispositif (1) selon la revendication 6, caractérisé en ce que les écarteurs (28) sont formés sous forme des cages annulaires (30) comportant deux éléments annulaires (32) espacés l'un de l'autre par des nervures (34) dans la direction axiale du dispositif (1), un espacement des deux éléments annulaires (32) entre eux déterminant une hauteur axiale (h) d'une chambre de prélèvement (18.1; 18.2) respective.
  8. Dispositif (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la paroi du tube extérieur (26) à sa face frontale supérieure (27o) le long de la circonférence est formée avec des perforations (54) en sorte que des particules, surtout du sable, des sédiments ou similaire peuvent tomber à travers les perforations (54) dans le tube extérieur (26) et ainsi des dépôts à une face frontale supérieure (27o) du tube extérieur (26) sont évités, préférablement, que les perforations sont formées par des trous (54) ou similaire.
  9. Dispositif (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un troisième corps de volume central (14) est prévu qui est agencé entre la chambre de prélèvement supérieure (18.1) et la chambre de prélèvement inférieure (18.2), le troisième corps de volume (14) avec son diamètre extérieur étant sensiblement adapté au diamètre intérieur du tube-filtre (10) et comportant des moyens d'étanchéité (16) à sa surface périphérique extérieure avec lesquels un effet d'étanchéité pouvant être ajusté relatif à la paroi intérieure du tube-filtre (10), préférablement, que le troisième corps de volume (14) peut être monté à une surface périphérique extérieure du tube extérieur (26).
  10. Dispositif (1) selon la revendication 3 ou une des revendications 3 à 9 en référence à la revendication 3, caractérisé en ce qu'une longueur axiale (I) des évidements (A) formés dans les différents tubes et une longueur axiale des canaux de liaison (42K; 42L) adjacents à ceux-ci est plus grande qu'une hauteur axiale effective (h) d'une chambre de prélèvement (18.1; 18.2) adjacente à ceux-ci, une partie des évidements (A) formés dans le tube extérieur (26) pouvant être couverte par les corps de volume (12; 13) aux extrémités et/ou par le corps de volume central (14).
  11. Dispositif (1) selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le premier, le second et/ou le troisième corps de volume (12; 13; 14) peuvent être déplacé relatif au tube extérieur (26) dans la direction d'un axe longitudinal (L) du dispositif (1) et étant fixable au tube extérieur (26) dans une position prédéterminée.
  12. Dispositif (1) selon la revendication 11, caractérisé en ce que les corps de volume (12, 13, 14) et au moins une cage annulaire (30) sont montés immédiatement adjacents l'un à l'autre au tube extérieur (26) et sont ainsi en contact entre eux avec leurs faces frontales axiales, des moyens de serrage (29o, 29u) pouvant être montés au tube extérieur (26) qui sont en contact avec les faces frontales extérieures du premier et du second corps de volume (12, 13) et fixant ainsi relative à une position axiale au tube extérieur (26) non seulement le premier mais aussi le second corps de volume (12, 13) et aussi ladite au moins une cage annulaire (30) et, le cas échéant, d'autres pièces qui sont montées au tube extérieur (26) entre le premier et le second corps de volume (12, 13).
  13. Dispositif (1) selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les moyens d'étanchéité (16) aux surfaces respectives périphéri-ques extérieures des corps de volume (12; 13; 14) ou les corps de volume (12; 13; 14) eux-mêmes comprennent une mousses à cellules ouvertes ou des poils pour garantir un effet d'étanchéité suffisant relatif à la paroi intérieure du tube-filtre (10), préférablement, que les moyens d'étanchéité (16) et/ou les corps de volume (12; 13; 14) consistent en une mousse à cellules ouvertes ou des poils.
  14. Dispositif (1) selon la revendication 13, les moyens d'étanchéité et/ou les corps de volume comportant un volume variable, les moyens d'étanchéité par alimentation d'un fluide dans le volume pouvant être élargis radialement vers l'extérieur.
  15. Procédé d'activation ou de nettoyage des puits à tube-filtre avec un tube-filtre (10), un dispositif (1) selon l'une quelconque des revendications 1 à 14 étant constamment déplacé vers le haut ou vers le bas le long du tube-filtre (10) et de l'eau étant simultanément débitée et déchargée à partir des deux chambres de prélèvement (18.1; 18.2) par le moyen de pompage (20) du dispositif (1).
EP16000438.8A 2015-02-26 2016-02-24 Dispositif et procede d'activation ou de nettoyage de puits Active EP3061875B1 (fr)

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DE102015002476.0A DE102015002476A1 (de) 2015-02-26 2015-02-26 Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen

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DE102015011108A1 (de) * 2015-08-19 2017-02-23 Berliner Wasserbetriebe Anstalt des öffentlichen Rechts Verfahren zur Inbetriebnahme von Vertikalfilterbrunnen

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US3945436A (en) * 1975-01-07 1976-03-23 Rostislav Nebolsine Method and apparatus for cleansing well liner and adjacent formations
DE8120151U1 (de) 1981-07-10 1981-12-17 Roth, Siegfried, 6220 Rüdesheim In brunnen einsetzbares geraet zum reinigen des brunnenfilters und der diesen umgebenden kieshinterfuellung
DE3445316A1 (de) * 1984-12-07 1986-06-19 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Vorrichtung zum reinigen von brunnenschaechten
DE3504752A1 (de) * 1985-02-08 1986-08-14 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Verfahren zum reinigen von brunnenschaechten und bohrbrunnen
DE3844499C1 (fr) 1988-12-30 1990-07-05 Charlottenburger Motoren- Und Geraetebau Kg H.W. Paul, 1000 Berlin, De
DE4017013C2 (de) 1990-05-26 1994-01-27 Aquaplus Brunnensanierung Kaet Vorrichtung zum Reinigen von Brunnenschächten
DE4037899A1 (de) * 1990-11-28 1992-06-04 Brechtelterra Spezialtiefbau U Vorrichtung zum reinigen eines brunnenrohres und der filterschuettung in wasserbrunnen
DE4133531C2 (de) * 1991-10-10 1994-09-15 Aquaplus Brunnensanierung Kaet Verfahren zur kombinierten mechanisch/chemischen Brunnenregenerierung und Vorrichtung zur Durchführung hierfür
AU2003257469A1 (en) * 2003-07-16 2005-02-04 Exploration Drilling International Gmbh Well, and method for regenerating a well
DE102007050966A1 (de) * 2007-10-23 2009-04-30 Nillert, Peter, Dr. Ing. Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen
DE102009018383B4 (de) 2009-04-26 2011-04-07 Nillert, Peter, Dr. Ing. Vorrichtung zum Aktivieren oder Reinigen von Filterrohrbrunnen
DE102014007812A1 (de) * 2014-06-02 2015-12-03 Teftorec Gmbh Vorrichtung zum Aktivieren oder Reinigen von Brunnen

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DE102015002476A1 (de) 2016-09-01
DE202015002482U1 (de) 2015-05-05
DK3061875T3 (en) 2019-01-07

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