WO2010060403A2 - Dispositif et procédé d'activation ou de nettoyage de puits - Google Patents

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

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Publication number
WO2010060403A2
WO2010060403A2 PCT/DE2009/001522 DE2009001522W WO2010060403A2 WO 2010060403 A2 WO2010060403 A2 WO 2010060403A2 DE 2009001522 W DE2009001522 W DE 2009001522W WO 2010060403 A2 WO2010060403 A2 WO 2010060403A2
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WO
WIPO (PCT)
Prior art keywords
filter tube
central chamber
edge
sealing piston
chamber
Prior art date
Application number
PCT/DE2009/001522
Other languages
German (de)
English (en)
Other versions
WO2010060403A3 (fr
Inventor
Peter Nillert
Original Assignee
Peter Nillert
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 Peter Nillert filed Critical Peter Nillert
Priority to EP09795304A priority Critical patent/EP2367985A2/fr
Publication of WO2010060403A2 publication Critical patent/WO2010060403A2/fr
Publication of WO2010060403A3 publication Critical patent/WO2010060403A3/fr

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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
    • E03B3/15—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 and a corresponding method for the same application.
  • 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.
  • 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.
  • various methods and devices are known that make use of hydromechanical, hydropneumatic and chemical principles of action. For discharging deposited and / or dissolved particles from the annulus and the mountains adjacent thereto, it is necessary to generate as high flow velocities in the area to be cleaned.
  • 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.
  • the invention has for its object to provide an apparatus and a method for activating or cleaning wells, which with simple means a cleaning effect in the annulus and in the adjacent mountains of the well intensified and the necessary working time is reduced.
  • a device for activating or cleaning filter tube wells with a filter tube comprises a first and second sealing piston, each extending longitudinally to the well longitudinal axis, and a central chamber formed between the first and second sealing piston and bounded by the inner wall of the filter tube. Furthermore, the device comprises a first and second edge sealing piston, which are arranged adjacent to the first and second sealing piston and respectively opposite to the central chamber, wherein between the first edge sealing piston and the first sealing piston, a first edge chamber, and between the second edge sealing piston and the second Sealing piston, a second edge chamber are formed, wherein both edge chambers are each bounded by the inner wall of the filter tube.
  • the sealing pistons and the edge sealing pistons act sealingly against the filter tube, the device being displaceable relative to the filter tube.
  • the central chamber and the first and second marginal chambers may be hydraulically connected to a pumping device.
  • the direction of flow between the central chamber and the two marginal chambers can also be reversed by sucking or withdrawing water from the two marginal chambers, thereby pumping or injecting water into the central chamber.
  • Such a reversal of the flow direction between the central chamber and the two edge chambers has the advantage that locally particularly soiled subspaces of the filter tube well are flowed successively from different directions and thus subjected to a more efficient cleaning.
  • a central delivery line is provided, by means of which the central chamber communicates with the pumping device.
  • the device can be moved along the filter tube of the Filterrohrbrunnens, for which purpose the central conveyor line is designed sufficiently tensile and pressure resistant.
  • the Central conveyor line to be made flexible, for example as a flexible conduit in the form of a tube, wherein the displacement of the device within the filter tube by means of a fixed to the device linkage, which extends through the filter tube to an open end of the filter tube well, is possible.
  • the central conveyor line passes through the central chamber in its longitudinal direction substantially completely, and is formed perforated in the region of the central chamber, so that the lateral surface of the central conveyor line can be traversed by water and thus serves as inlet funnel.
  • the openings or holes of this inlet strainer are dimensioned sufficiently large, so that even contaminants contained in the water can pass therethrough.
  • a first and second additional delivery line are provided, which connect the first and second marginal chamber with the pumping device.
  • water can be sucked out by means of the pumping device from the first / second edge chamber or pumped into it.
  • a strainer is arranged in the first and second marginal chamber, through which water can flow together with any soiling.
  • the strainer has the advantage of a mechanically stable construction and is therefore stable against mechanical loads. Overall, the two strainer give the device in the region of a respective edge chamber sufficient stability.
  • the device advantageously has compact dimensions, since the pump device, sucked out by means of the well water and the above-mentioned circulation flow is achieved, is not arranged in the device itself, but over days.
  • the central delivery line as well as the two additional delivery lines in this case ensure a fluid connection between the central chamber or the two marginal chambers and the pumping device.
  • the two edge chambers and the central chamber with the pumping device are in communication such that at least a portion of the water, which is sucked out by means of the pumping device from the central chamber, is conveyed back into the first and second edge chamber.
  • an external filter device can be provided, by means of which the water sucked out of the central chamber / from the edge chambers can be filtered before it is conveyed back into the marginal chambers / into the central chamber.
  • Such an external filter device ensures that dirt particles or the like, which have been conveyed out of the filter tube well, are not pumped into the filter tube well again.
  • the longitudinal extent of the first and second sealing piston along the filter tube may be substantially the same length. This supports easy handling of the device.
  • the longitudinal extent of each sealing piston substantially corresponds to the height of the central chamber. In this case, the entire length or height of the device is determined to be substantially one third by the height of the central chamber and two thirds by the longitudinal extent of the sealing piston.
  • Such an embodiment of the device enables efficient cleaning or activation of the well, since each section of the filter tube, with the exception of the lowermost and the uppermost, is passed through in each case three times after a corresponding displacement of the device within the filter tube. In this case, virtually a pre-cleaning, a deep cleaning and a post-cleaning of each filter section takes place, wherein a measurement and control of the cleaning process can be performed integrally for all three sections.
  • the height of the central chamber may be less than about 20% of the total length of the device along the longitudinal axis of the filter tube, in particular less than about 10% of this total length.
  • the central chamber takes the form of a gap chamber, wherein the distance between the two sealing piston is small to each other. This allows the deep cleaning in the adjacent to the well edge mountains are improved due to an increased flow velocity of the water.
  • the two edge seal pistons are spaced from the adjoining sealing piston such that a height of the first and second marginal chamber is less than about 10% of the total length of the device along the longitudinal axis of the filter tube.
  • the comparatively small height of the marginal chambers causes the water conveyed or injected out of the marginal chambers to flow as far radially as possible into the filter tube well or its filter gravel bed. On the one hand, this causes a sufficient deep cleaning of the filter bed of gravel, with the water injected from the marginal chambers flowing back into the central chamber.
  • this circulation flow between the two marginal chambers and the central chamber causes a kind of hydraulic barrier for further groundwater flowing from the direction of the filter tube and the two edge sealing pistons in the direction of the central chamber. This groundwater is forced to flow around the above-mentioned circulation flow laterally, wherein it flows through radially outer regions of the Filterkiesringraums or even the adjacent mountains. This results in an improved cleaning of the well.
  • the device is displaceable within the filter tube of the well or can be moved therein.
  • Such displaceability is achieved in that the sealing piston have a flexible outer skin, which is formed either by pneumatically volume-modifiable seals on the piston skirt surfaces or by a flexible material.
  • At least one of the two sealing piston can be made of a flexible material and filled by a fluid.
  • a supply line can be guided substantially parallel to the central conveyor line, which is in fluid communication with the interior of the first and the second sealing piston. This allows a space-saving feeding of fluid into the sealing piston to increase the internal pressure when a seal between the sealing piston and the inner wall of the filter tube is required.
  • the second sealing piston which first comes into contact with well water during insertion of the device into the filter tube, made of the flexible material.
  • An opening in the form of a directional control valve may be provided at a lower end of the supply line adjacent to an edge of the second sealing piston opposite the withdrawal chamber. The first time the device is introduced into the filter tube, the directional control valve can be opened so that the second sealing piston fills with well water.
  • the explained pressure increase within the second sealing piston is achieved solely by a comparatively small amount of water, which is conveyed through the supply line into the second sealing piston.
  • the supply line may be coupled to a vent line.
  • both sealing piston made of the flexible material.
  • the supply line can pass through the first and second sealing pistons and be perforated within the respective sealing pistons so that the fluid connection to the sealing piston is created by the perforation. It is understood that the supply line is suitably sealed at the connection points to the end faces of the sealing piston, so that an undesired escape of fluid at a pressure increase within the sealing piston is excluded.
  • At least one of the two sealing pistons can consist of a rigid cylindrical body, which with its outer diameter is slightly smaller than the inner diameter of the filter tube.
  • a flexible layer may be disposed on an outer peripheral surface of the cylindrical body.
  • the outer diameter of this flexible layer is slightly larger than the inner diameter of the filter tube.
  • the flexible layer can be made of a foam, in particular an open-cell foam or a foam rubber.
  • the provision of the flexible layer on the outer peripheral surface of the cylindrical body has the advantage that all pressure lines are not required, for example in the form of the aforementioned supply line. Accordingly, a targeted pressure increase and relief in the sealing piston is not required, which facilitates the operation of the device.
  • both variants of the sealing piston ie the inflatable embodiment consisting of the flexible material, as well as the embodiment as a rigid cylinder body with the flexible layer of foam, foam or the like on the outer peripheral surface are suitable for use in so-called winding wire filters, wherein the characteristic relief structure of the filter tube - Inner wall is suitably sealed by the sealing piston against a flow of water between the filter wire rods.
  • this flexible layer can be exchanged if the cell structure of this layer is attacked or damaged by frequent displacement of the device along the well longitudinal axis.
  • the flexible layer eg. in the form of an open-cell foam, be glued to a sleeve, in which case this sleeve is pushed onto the cylindrical body and firmly connected to the latter.
  • the flexible layer is firmly connected to the cylindrical body and secured against axial displacement, wherein for replacement of the flexible layer, the sleeve is removed from the cylindrical body.
  • the two sealing pistons can be integrally formed from an annular cylinder whose outer wall is formed perforated at least in the region of the removal chamber.
  • the two sealing pistons respectively form the upper and lower part of the device.
  • a lower part of the device, ie the second sealing piston is in this case closed at its lower end side, wherein an upper part of the device, ie the first sealing piston at its upper end side has an opening in which the central conveyor line leads into or is secured therein.
  • the annular cylinder On the outer peripheral surface of the annular cylinder may be adjacent to the central chamber, ie in an upper and lower portion of the cylinder sealing elements, for example in the form of the above-described pressure-controlled sealing body or in the form of the flexible layer, mounted a seal against an inner wall of the well filter tube to ensure. If the perforation of the annular cylinder extends beyond more than its central portion, the length of the outer wall of the annular cylinder adjacent the central chamber or its height may be adjusted by a length of the sealing body applied to the outer circumferential surface of the annular cylinder. In the same way as the sealing piston and the edge sealing piston can be made either of a flexible material whose outer diameter can be changed by a change in fluid pressure within the sealing piston.
  • the edge sealing pistons may also be formed as a rigid cylinder body, which is covered by a flexible layer in the form of foam rubber, foam or the like. Both variants allow both a sufficient seal against an inner wall of the filter tube and a jamming-free mobility within the filter tube.
  • the sealing pistons which define between them the central chamber, and the two edge sealing pistons form a rigidly connected structure of the device.
  • the two sealing pistons and the two edge sealing pistons are always moved simultaneously with each other.
  • a method according to the invention for activating or cleaning filter tube wells comprises the following steps:
  • An essential advantage of the invention is that different operating modes can be realized by means of the device in terms of flow mechanics.
  • the first or second mode of operation is chosen depending on the type of filter tube
  • the water which is injected to establish the circulation flow again in the central chamber or the two marginal chambers, a chemical cleaning agent may be added. Since this circulation flow is enclosed outside of a protective flow, namely well water, which flows from further out into the central chamber or the two marginal chambers, a drifting of the purifying agent in the aquifer is not possible.
  • the flow direction between the central chamber and the two marginal chambers in desired Reverse way.
  • a saving of additional required water can be achieved that the water sucked out of the central chamber / out of the edge chambers is at least partially conveyed back into the marginal chambers / in the central chamber.
  • the water conveyed back into the device is previously passed through an external filter device so as not to re-enter contaminants and the like in the filter tube wells.
  • the second operating mode is selected for the method according to the invention when the contamination of the filter tube wells are relatively large and are not readily dissolve with the first mode of operation.
  • water is injected out of the first and second peripheral chambers radially outward into the filter tube wells.
  • a cleaning solution is injected from the central chamber radially outward into the filter tube well or its filter annulus, with the flow regions of the water injected from the marginal chambers providing a hydraulic barrier to the cleaning solution injected from the central chamber.
  • a suction pressure can also be applied to the two marginal chambers, so that suction of water or cleaning agent takes place both via the central chamber and the two marginal chambers.
  • the cleaning solution may contain an active ingredient for chemical treatment of contamination of the Filterrohrbrunnens.
  • the cleaning effect achieved is further improved.
  • the inventive method has the advantage that the device is moved after a first cleaning cycle substantially to the height of the central chamber in a new operating position, so that in addition to a complete cleaning of the mountains also a two-time intensive cleaning of the same section of the annulus. This happens when, in an advantageous development of the invention, the steps d) and e) are repeated.
  • a displacement of the device in a further operating position can be carried out as a function of a measurement of the solids content of particles contained in the conveyed water, namely, when this solids content falls below an allowable limit. This is an indication that the appropriate well section has been sufficiently cleaned.
  • steps d and e are repeated once in a step f, before in a step g the device is moved to a new operating position in the same direction along the filter tube by a distance that substantially corresponds to the length of the device in that, in the newly set operating position, the end face of the second sealing piston facing away from the removal chamber is located at the point at which the front side of the first sealing piston facing away from the removal chamber has been arranged in the preceding operating position.
  • the device is operated in the new operating position according to step g, wherein a suction pressure is applied to the central chamber.
  • a suction pressure is applied to the central chamber.
  • the method according to the invention can also be operated with a device in an embodiment in which the two sealing pistons and the two edge sealing pistons consist of essentially rigid cylindrical bodies whose outer diameter is slightly smaller than the inner diameter of the filter tube and which have a flexible layer on their outer circumferential surface ,
  • a device is continuously displaced along the filter tube during the steps c) to e) in the first operating mode of the method and remains continuously in operation. This takes less time to treat the filter tube well (activation or cleaning).
  • FIG. 1 is a perspective view of a device according to the invention in the assembled state
  • FIG. 2 is a longitudinal cross-sectional view of the device of FIG. 1; FIG.
  • FIG. 3 is an exploded view of the device of FIG. 1 with its essential components;
  • Fig. 4 is a longitudinal cross-sectional view of the device of Fig. 1 in a
  • FIG. 5 shows the device of FIG. 4 operating in a first mode of operation
  • Fig. 7 shows the device operating in a horizontal filter train of a well.
  • FIGS. 1 to 3 A preferred embodiment of a device 1 according to the invention and its structure will be explained in detail below with reference to FIGS. 1 to 3.
  • the device 1 is shown in Fig. 1 in a perspective view.
  • the device 1 comprises two sealing pistons, namely a first sealing piston 2 and a second sealing piston 4.
  • the sealing pistons 2, 4 are interconnected by a central conveying line 6, wherein the central conveying line 6 passes through the first sealing piston 2 and with its front end to the second Seal piston 4 is attached.
  • a second edge sealing piston 10 is arranged, which is also slightly spaced from the second sealing piston 4.
  • the device 1 of Fig. 1 is shown in a longitudinal cross-sectional view, wherein the respective individual parts are shown in an exploded view of Fig. 3.
  • the device 1 comprises a first additional conveying line 12, which passes through the first edge sealing piston 8 and opens with its end face between the first edge sealing piston 8 and an end face of the first sealing piston 2.
  • the device 1 comprises a second additional conveying line 14, which passes through both the first edge sealing piston 8 and both sealing pistons 2, 4, and opens with its open end face in front of the second edge sealing piston 10.
  • the above-mentioned components of the device 1 are shown in the perspective view of FIG. 3.
  • Both the two sealing pistons 2, 4 and the two edge sealing pistons 8, 10 are each formed from a substantially rigid cylindrical body, wherein the outer diameter of the sealing piston and the edge sealing piston is the same.
  • a jacket-shaped flexible layer is attached in each case, which is made of an open-cell foam rubber.
  • the layer 16 for a corresponding sealing piston 2, 4 and the layer 18 for a corresponding edge sealing piston 8, 10 are mounted on a respective sealing piston or on a respective edge sealing piston, characterized in that the end-side edge plates 3 of the sealing piston or the edge sealing piston with respect to a Central lateral surface have a slightly increased diameter.
  • the flexible layers 16, 18 are fixed axially (with respect to the longitudinal axis 9 of the device 1) on the sealing piston.
  • Fig. 3 can not be seen sleeves on which said flexible layers 16, 18 are respectively glued.
  • the attachment of the flexible layers 16, 18 carried on the respective sealing piston 2, 4 suitably by pushing these sleeves on the sealing piston, wherein an inner diameter of these sleeves is adapted to the outer diameter of the sealing piston.
  • the front-side edge plates 3 can be removed from the sealing pistons 2, 4, so that a sliding of the sleeves on the sealing piston is possible.
  • a subsequent fastening of the edge plates 3 to the respective sealing piston 2, 4 ensures axial attachment of the sleeve or the flexible layer on the sealing piston 2, 4. Should a replacement of a flexible layer 16, 18 be required, this can be done simply by that after disassembly of the edge plate 3, the sleeve, with which the flexible layer is glued, is pushed down by the sealing piston.
  • the device 1 serves to be inserted into a filter tube of a filter tube well to suitably clean and / or activate the filter tube well.
  • a filter tube is simplified indicated by dashed lines and designated by the reference numeral 20.
  • a central chamber 22 is formed, which is a Inner wall of the filter tube 20 is limited.
  • a first edge chamber 24 is formed between the first edge sealing piston 8 and the first sealing piston 2
  • a second edge chamber 26 is formed between the second edge sealing piston 10 and the second sealing piston 4, wherein these edge chambers 24, 26 are likewise delimited by the inner wall of the filter tube 20 become.
  • the central delivery line 6 is perforated in the region of the central chamber 22 (FIG.
  • an annular strainer 28 is arranged, wherein the first additional conveying line 12 opens with its open end in this strainer 28. If water is sucked out of the first edge chamber 24 by means of the first additional conveying line 12, the water flows through this strainer 28.
  • a strainer 28 is likewise arranged between the second edge sealing piston 10 and the second sealing piston 4, ie within the second edge chamber 26. The open end side of the second additional conveying line 14 opens into this strainer 28.
  • the two strainer 28, which are arranged in the respective edge chambers, have sufficiently large openings or passage openings, so that dirt particles that may be contained in the water, through there can occur.
  • the device 1 is shown in a state when fully inserted in the filter tube 20 of a filter tube well.
  • the flexible layers 16, 18, which are fastened on the outside to the two sealing pistons 2, 4 and the two edge sealing pistons 8, 10, are formed with their outer diameter slightly larger than the inner diameter of the filter tube 20.
  • the flexible layers 16, 18 are slightly compressed so that they closely conform to an inner wall of the filter tube 20.
  • the pores of the flexible layers 16, 18 fill, so that a sufficient sealing effect is established between an outer circumferential surface of the two sealing pistons 2, 4 or the two edge sealing pistons 8, 10 and the inner wall of the filter tube 20.
  • At least one or both sealing pistons 2, 4 and at least one or both edge sealing pistons 8, 10 may also be formed as cylindrical tubular bodies which consist of a flexible material.
  • These hose bodies can be filled with a fluid, eg compressed air or water.
  • this hose body is filled by suitable lines for compressed air or water, which are connected to the sealing piston or the edge sealing piston.
  • a change in the pressure within the hose body causes a change in the outer diameter of the sealing piston or the edge sealing piston.
  • FIG. 4 illustrates that the total length L of the device 1 is measured from an outer end face of the first edge sealing piston 8 to an outer end face of the opposite second edge sealing piston 10.
  • a length h of the two sealing pistons 2, 4 is substantially equal.
  • a height h of the central chamber 22 substantially corresponds to the length II of a respective sealing piston 2, 4.
  • the two edge sealing pistons 8, 10 each have a length I 2 , which assumes only a small value in relation to the total length L of the device 1. The same applies to a height h 'of a respective marginal chamber 24, 26.
  • the height h 1 is less than approximately 10% of the total length L of the device 1.
  • Fig. 4 shows the device 1 of Fig. 2 when fully inserted into the filter tube 20 of a filter tube well.
  • the well has a borehole edge 30 which encloses an annulus 32.
  • the annular space 32 is expanded with filter gravel or sand, whereby outside the annulus 32 natural mountains 34 or the aquifer adjoin one another.
  • the filter tube 20 is inserted, which is designed for a required water permeability, for example with slots.
  • the device 1 is moved longitudinally displaceable within the filter tube 20 by means of the central conveyor line 6, for which purpose the central conveyor line 6 is formed sufficiently pressure and tensile strength.
  • the Central delivery line 6 is guided centrally together with the two additional delivery lines 12, 14 bundled within the filter tube 20 so that chafing or the like is prevented on an inner wall of the filter tube 20.
  • the central delivery line 6 is led out of the filter tube 20 to the outside together with the two additional delivery lines 12, 14 and communicates there with a pump device (not shown).
  • a pump device By means of the pumping device, water can be conveyed out via the central delivery line 6 or the two additional delivery lines 12, 14 out of the central chamber 22 or out of the two marginal chambers 24, 26 or pumped in there, which will be explained in detail below.
  • Fig. 2 are one or more rigid or flexible tubes, which are guided through the entire device 1 in the longitudinal direction and serve as a passage for water in the well pipe when retracting and extending the device 1 from the filter tube 20, provided that the seals passably made of flexible sealing rubber or material with similar properties. If the sealing pistons 2, 4 and possibly also the edge sealing pistons 8, 10 are designed as pressure-retaining shape-changing cylindrical annular rubber bubbles, the passage tubes or tubes are not required.
  • arrows B from the two marginal chambers 24, 26 into the filter tube wells.
  • the groundwater which additionally enters from above and below the respective edge sealing piston 8, 10 in the central chamber 22, urged radially outward, and thereby rinses radially further remote areas of the filter packing and / or the adjacent aquifer in the form of mountains 34.
  • the additional water which is conveyed or injected into the two marginal chambers 24, 26 via the two additional conveying lines 12, 14, can be proportionately composed of the water which has previously been sucked out of the central chamber 22 by means of the central conveying line 6.
  • the water conveyed out by means of the central delivery line 6 is suitably filtered by an external filter device (not shown) and subsequently pumped back into the device 1 by the two additional delivery lines 12, 14. This advantageously reduces the required total water requirement.
  • the external filter device which is arranged outside the device 1 and over days, contaminants or dirt particles from the water, which is pumped out of the well, dissolved out. Accordingly, a re-entry of these dirt particles is prevented in the well.
  • the operation of the device 1 in the first operating mode according to FIG. 5 can be carried out in such a way that the device 1 is displaced continuously within the filter tube 20.
  • the first mode of operation may be performed such that, with the circulation flow set as shown in FIG. 5, the device 1 remains at rest and is not displaced within the filter tube 20.
  • the device 1 is then displaced in the direction of the well longitudinal axis by a distance which corresponds at least to the height h of the central chamber 21. After shifting to this new operating position, the circulation flow is then set again as explained above.
  • the device 1 starting from a first operating position in which the circulation flow has been adjusted as shown in FIG. 5, be moved along the well longitudinal axis by a distance which is about three times the amount of height h central chamber 22 corresponds.
  • the end face of the second sealing piston 4 remote from the central chamber 22 reaches the point at which the end face of the first sealing piston 2 facing away from the central chamber 22 has been arranged in the preceding operating position.
  • a chemical cleaning solution can be added to the water injected to establish the circulation flow in order to dissolve and remove chemically dissolvable adhesions on the filter grains and / or on the filter tube or the pore-bonding deposits.
  • This can be z. B. by means of a metering device in the pumping device.
  • the admixing of such a chemical cleaning solution is particularly advantageous in the purification of remediation wells, which are operated for pumping out groundwater fluid contaminants, which can also be very viscous in some cases.
  • the device 1 By means of the device 1, it is not only possible to discharge solids from the Filterkiesringraum 32, but also to effect a resolution of Kornanhaftept, especially in the adjacent to the annulus 32 mountains 34.
  • the device 1 is operated in a second mode of operation of the method as explained below with reference to Figs. 6a and 6b.
  • FIG. 6 a shows a first phase ("phase 1") of the second operating mode.
  • phase 1 water from the first and second marginal chambers 24, 26 is injected radially outward into the filter tube wells.
  • the flows, which thereby radially adjust out of the marginal chambers 24, 26, are identified in FIG. 6a by the regions IV.
  • These flow areas IV form a hydraulic restriction in the axial direction with respect to the region of the filter tube well which radially adjoins the two sealing pistons 2, 4 and the central chamber 22. parallel to the well longitudinal axis.
  • a cleaning solution is injected from the central chamber 22 out through the central delivery line 6 into the well (indicated by the arrows V in FIG.
  • phase 2 In a second phase (FIG. 6b: “phase 2") of the second operating mode, the flow direction with respect to the central chamber 22 is reversed. This means that now by means of the pumping device, a negative pressure is applied to the central delivery line 6, as a result of which water and thus also the previously introduced cleaning solution are sucked out of the central chamber 22.
  • Fig. 6b the inflow of water (or cleaning solution) radially into the center is shown. Trale chamber 22 indicated by arrows.
  • the injection rates at which water from the two marginal chambers 24, 26 and the cleaning solution are conveyed from the central chamber 22 into the well are dependent upon well geometry, permeability contrast values and position the device 1 are to be dimensioned within the well filter relative to its upper and lower edges.
  • the amount of cleaning agent depends on the intended radial penetration, which is to be achieved. If the total amount of detergent or the water enriched with it in the second phase 2 of the second mode is to be returned, is also the natural flow gradient in the aquifer in the dimensioning of the injection water and possibly a contact time before the start of the back pumping and the possible rainpumprate note.
  • the treatment of the filter well after the operating mode according to FIG. 6 can be carried out in sections in the same manner as in the first operating mode according to FIG. 5.
  • the device 1 sequentially in the first operating mode and the second Operating mode to thereby eliminate different causes of the aging of the well filter sequentially or simultaneously.
  • a further embodiment of the device 1 is shown, which is suitable for use in a horizontal filter strand 35.
  • the groundwater level is marked in FIG.
  • the basic structure of this embodiment and its operation correspond to the embodiment according to FIGS. 1-6.
  • the horizontal filter strand 35 opens into a well shaft 36.
  • the filter strand 35 has a filter tube 20 in which the device 1 is longitudinally displaceable.
  • the device 1 may consist of suitable sections, which are mounted together only when inserted into the filter tube. These sections may be formed from the sealing piston 2, 4 and the edge sealing piston 8, 10, wherein suitable connection means are provided which ensure a defined distance of the piston to each other.
  • the central conveyor line consists of a flexible line 6 ', which is guided out of the shaft well to the opening. Over days, the flexible conduit 6 'is connected to the pump device 37 (shown in simplified form in FIG. 7). Regardless of the flexible nature, the central delivery conduit 6 'performs the same function as in the embodiment of FIGS. 1-6, namely, providing fluid communication between the central chamber 22 and the pumping device 37.
  • Attached to the device 1 is a linkage 38 by means of which the device 1 can be displaced within the filter tube 20 or in the longitudinal direction of the horizontal filter strand 35.
  • the linkage 38 is attached to an outer end side of the edge sealing piston 8 by means of a coupling 39.
  • the coupling 39 By means of the coupling 39, the linkage 38 can be mounted on or demounted from the edge sealing piston 8.
  • the coupling 39 ensures a tension and pressure-stable connection of the linkage 38 with the device 1, wherein the linkage 38th if necessary can be removed from the device 1.
  • the flexible central conveyor line 6 ' is suitably carried.
  • the linkage 38 may consist of individual linkage elements which can be rigidly connected together, e.g. by means of threaded sleeves 40.
  • the structure of the linkage 38 from such individual linkage elements facilitates insertion into the horizontal filter strand.

Landscapes

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

Abstract

L'invention concerne un dispositif (1) d'activation ou de nettoyage de puits à tube-filtre (20), ce dispositif comportant un premier et un second piston d'étanchéité (2, 4) s'étendant chacun le long de l'axe longitudinal du puits, ainsi qu'une chambre centrale (22) formée entre le premier et le second piston d'étanchéité (2, 4) et délimitée par la paroi intérieure du tube-filtre (20). Le dispositif selon l'invention comprend en outre un premier et un second piston d'étanchéité périphérique (8, 10) qui sont disposés adjacents au premier et au second piston d'étanchéité (2, 4), respectivement, à l'opposé de la chambre centrale (22). Une première chambre périphérique (24) est formée entre le premier piston d'étanchéité périphérique et le premier piston d'étanchéité et une seconde chambre périphérique (26) est formée entre le second piston d'étanchéité périphérique et le second piston d'étanchéité, chacune des deux chambres périphériques étant délimitée par la paroi intérieure du tube-filtre. Les pistons d'étanchéité (2, 4) et les pistons d'étanchéité périphériques (8, 10) assurent l'étanchéité vis-à-vis du tube-filtre (20), le dispositif (1) pouvant être déplacé par rapport au tube-filtre (20).
PCT/DE2009/001522 2008-11-03 2009-10-30 Dispositif et procédé d'activation ou de nettoyage de puits WO2010060403A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09795304A EP2367985A2 (fr) 2008-11-03 2009-10-30 Dispositif et procédé d'activation ou de nettoyage de puits à tube-filtre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008055623.8 2008-11-03
DE200810055623 DE102008055623B4 (de) 2008-11-03 2008-11-03 Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen

Publications (2)

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WO2010060403A2 true WO2010060403A2 (fr) 2010-06-03
WO2010060403A3 WO2010060403A3 (fr) 2010-10-14

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DE (1) DE102008055623B4 (fr)
WO (1) WO2010060403A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112647902A (zh) * 2020-12-25 2021-04-13 核工业北京化工冶金研究院 一种地浸采铀钻井过滤器及成井方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022109822A1 (de) 2022-04-24 2023-10-26 Technische Universität Dresden, Körperschaft des öffentlichen Rechts Verfahren und Vorrichtung zur Regenerierung eines Versickerungsbrunnens in einem ungesättigten porösen Medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973316C (de) 1953-09-16 1960-01-21 Katharina Geigenmueller Vorrichtung zum Regenerieren, Reinigen und Desinfizieren von Filtertiefbrunnen
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
DE4017013A1 (de) 1990-05-26 1991-11-28 Aquaplus Brunnensanierung Kaet Vorrichtung zum reinigen von brunnenschaechten
FR2742795A1 (fr) 1995-12-22 1997-06-27 Rech Geol Et Minieres Brgm Bur Dispositif de prelevement selectif de liquides a differents niveaux d'un forage

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US3945436A (en) * 1975-01-07 1976-03-23 Rostislav Nebolsine Method and apparatus for cleansing well liner and adjacent formations
DE3445316A1 (de) * 1984-12-07 1986-06-19 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Vorrichtung zum reinigen von brunnenschaechten
DE3844499C1 (fr) * 1988-12-30 1990-07-05 Charlottenburger Motoren- Und Geraetebau Kg H.W. Paul, 1000 Berlin, De
DE9014275U1 (de) * 1990-10-15 1990-12-20 Aquaplus - Brunnensanierung Käthe Munding GmbH & Co. KG, 8640 Kronach Abdichteinrichtung für ein Brunnenreinigungsgerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973316C (de) 1953-09-16 1960-01-21 Katharina Geigenmueller Vorrichtung zum Regenerieren, Reinigen und Desinfizieren von Filtertiefbrunnen
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
DE4017013A1 (de) 1990-05-26 1991-11-28 Aquaplus Brunnensanierung Kaet Vorrichtung zum reinigen von brunnenschaechten
FR2742795A1 (fr) 1995-12-22 1997-06-27 Rech Geol Et Minieres Brgm Bur Dispositif de prelevement selectif de liquides a differents niveaux d'un forage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112647902A (zh) * 2020-12-25 2021-04-13 核工业北京化工冶金研究院 一种地浸采铀钻井过滤器及成井方法

Also Published As

Publication number Publication date
WO2010060403A3 (fr) 2010-10-14
DE102008055623A1 (de) 2010-05-06
EP2367985A2 (fr) 2011-09-28
DE102008055623B4 (de) 2012-04-26

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