EP2334874B1 - 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
EP2334874B1
EP2334874B1 EP08843205.9A EP08843205A EP2334874B1 EP 2334874 B1 EP2334874 B1 EP 2334874B1 EP 08843205 A EP08843205 A EP 08843205A EP 2334874 B1 EP2334874 B1 EP 2334874B1
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EP
European Patent Office
Prior art keywords
filter tube
well
removal space
volume
height
Prior art date
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EP08843205.9A
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German (de)
English (en)
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EP2334874A2 (fr
Inventor
Peter Nillert
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Teftorec GmbH
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Teftorec GmbH
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Publication of EP2334874A2 publication Critical patent/EP2334874A2/fr
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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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 for the same purpose according to the preamble of claim 5.
  • 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 which make use of hydromechanical, hydropneumatic and chemical principles of action.
  • 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 AbsperrSystem for entering 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.
  • US-A-2 288 233 and US-A-3 032 116 are each a generic device with the features of the preamble of claim 1 known.
  • Out GB-A-2 347 702 is also a generic device with the features of the preamble of claim 1 known.
  • solid bodies are used, each consisting of a rigid cylindrical body with a diameter smaller than a borehole of a Filterrohrbrunnens and are provided on the outer periphery with a flexible layer whose diameter is larger than the filter tube.
  • an internal pressure is generated within the flexible layer, which presses this flexible layer against the filter tube and thereby brings it into contact with the wall thereof.
  • the invention has for its object to provide a device and a method for activating or cleaning wells, wherein the device is a sealing effect against the filter tube with robust and simple means realized and intensified for the process with simple means of the particle discharge and the necessary working time is reduced.
  • a device for activating or cleaning filter tube wells comprises a first and a second volume body, each extending longitudinally to the well longitudinal axis, with its outer diameter adapted to the inner diameter of the filter tube and flexibly formed on its outer peripheral surface at least radially with respect to the well longitudinal axis, so that a sealing effect is achieved between the outer circumferential surfaces of the respective volumetric bodies and the inner wall of the filter tube.
  • At least one of the two solid bodies consists of a rigid cylindrical body, which is formed with its outer diameter smaller than the inner diameter of the filter tube.
  • a removal chamber is formed, which is hydraulically connectable with a pumping device and whose height is determined from the distance between the two solids to each other.
  • the longitudinal extension of the respective volume body in the direction of the longitudinal axis of the device corresponds to the height of the removal chamber.
  • a flexible layer is disposed on an outer circumferential surface of the cylindrical body. An outer diameter of this flexible layer is formed slightly larger than the inner diameter of the filter tube.
  • the flexible layer is made of a foam, in particular an open-cell foam or a foam rubber.
  • the device according to the invention is characterized in that the two volumetric bodies fulfill the function of a sealing piston, the volumetric bodies delimiting a central chamber arranged between them in the form of the removal chamber.
  • the solids ensure a seal against the filter tube of the well along their entire length.
  • the sealing effect is achieved with respect to the filter tube by the deformation of the foam from which the flexible layer is made, for example when inserted into the filter tube.
  • the flexible layer adapts to the inner diameter of the filter tube during insertion of the device into the filter tube and sucks with it full of water in the well. As a result, a sufficient tightness between an outer peripheral surface of the cylindrical body and inner wall of the filter tube is achieved to seal the filter tube in this area.
  • the device according to the invention is equally suitable for use in vertical and horizontal filter strands of filter tube wells with built in the annulus between the filter tube and mountains Filterkies deliberatelyung, as well as for use in well structures without built-in filter gravel.
  • the second volume first comes into contact with well water.
  • the sealing piston in the form of the two solids the filter tube of the well is sealed on both sides of the sampling chamber relative to the annulus or the adjacent mountains, namely in the longitudinal direction of the well.
  • the distance between the solids can be adjusted, so that the aspect ratio between the height of the extraction space and the longitudinal extent of the solid is variable.
  • the distance between the two solids can be achieved, for example, by means of a length-adjustable telescopic punch or the like, by means of which the solid bodies are connected to one another at their opposite end faces.
  • a first or second shut-off disk can be arranged on the solids adjacent to the removal chamber, wherein the two shut-off disks are concentric and substantially parallel to each other and with their outer diameter substantially adapted to the inner diameter of the filter tube.
  • the shut-off discs improve the sealing effect of the volume body with respect to the inner wall of the filter tube and a defined delimitation of the volume body to the removal chamber.
  • the device can have a delivery line which can be brought into connection with the pump device and which is in fluid communication with the removal chamber.
  • the delivery line can pass through the first volume body so that the first volume surrounds the delivery line.
  • the delivery line is designed sufficiently tensile and pressure resistant, so that a displacement of the device is ensured within the filter tube reliable. A detachment of the volume body in such a displacement is advantageously avoided in that they can be attached to the first and the second shut-off disc, for example by means of welding, screwing or the like.
  • At least one of the two solids can be slidably mounted on the delivery line, so that the distance to the respective other volume body and thus the height of the removal space is changed by a displacement of this volume body relative to the delivery line along the well longitudinal axis.
  • the concerning the Delivery line displaceable solids can be determined by a locking device to ensure a defined and consistent height of the removal chamber.
  • the formation of the solid as a rigid cylinder body with the flexible layer of foam, foam or the like on the outer peripheral surface is 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 solid against a water flow 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 two solids 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 solid bodies respectively form the upper and lower part of the device.
  • a lower part of the device, ie the second volume body is in this case closed at its lower end side, wherein an upper part of the device, that is, the first volume body at its upper end side has an opening in which the delivery line leads into or is secured therein.
  • sealing elements in the form of the above-described flexible layer which ensure a seal against an inner wall of the well filter tube can be mounted adjacent to the removal chamber, ie in an upper and lower portion of the cylinder.
  • the length of the outer wall of the annular cylinder adjacent to the removal chamber or its height by a length of the on the Outer circumferential surface of the annular cylinder applied sealing body can be adjusted.
  • the shut-off discs may each be formed of two disc elements, between which a sealing disc is enclosed, wherein an outer diameter of the disc elements smaller than the inner diameter of the filter tube and an outer diameter of the sealing washer are larger than the inner diameter of the filter tube.
  • a respective sealing disc may be made of a soft rubber or the like, which is fastened between a shut-off disc and a further sheet-metal disc having a diameter similar or similar to the blocking disc. The sealing disc obstructs in the variant of the volume body with a flexible layer on the outer peripheral surface of the cylindrical body, a flow around the shut-off of the flexible layer into the extraction chamber, whereby the cleaning of the adjacent annular space is improved.
  • the delivery line can completely pass through the removal chamber and be guided to the second shut-off, wherein the delivery line is formed perforated within the removal chamber.
  • the second shut-off disc can be fixed to a lower free end side of the conveyor line.
  • a fluid connection between the delivery line and the removal chamber is ensured by the perforation, wherein the perforation is chosen sufficiently large taking into account the particles to be discharged.
  • the longitudinal extent of the first and second volume body along the filter tube may be substantially the same length. This supports a uniform cleaning action of the annulus on both sides of the extraction chamber.
  • Another advantage is when the longitudinal extent of each volume body substantially corresponds to the height of the removal space.
  • the entire length or height of the Device determined by one third of the height of the extraction space and two thirds by the longitudinal extent of the solid.
  • 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.
  • a step f the steps d and e are repeated once before
  • a step g the apparatus is shifted to a new operating position in the same direction along the filter tube by a distance three times the height corresponds to the removal room, so that in the newly set operating position the front side of the second volume body facing away from the removal space is located at the point at which the front side of the first volume body facing away from the removal space 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 removal chamber.
  • the inventive method has the advantage that the device is moved after a first cleaning cycle substantially to the height of the removal 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.
  • Such a method is particularly suitable for cleaning or activating a well filter with expanded Filterkiesringraum. Since a respective annular space section is only flowed through once, with such a method, a very fast cleaning of the well along its entire length with respect to the annulus can be made. If such a method is carried out with a device in which the height of the extraction space substantially corresponds to the respective longitudinal extent of the two solids, this device can be moved in step g by a distance which substantially corresponds to three times the height of the extraction space.
  • the device 1 comprises a delivery line 2 which can be longitudinally inserted into a filter tube of a well, which will be described below with reference to FIG Fig. 2 is still explained.
  • a first shut-off disk 3 and a second shut-off disk 4 are fastened such that the two shut-off disks 3, 4 are concentric and substantially parallel to each other.
  • the in Fig. 1 simplified is shown by dashed lines and designated by reference numeral 5, is introduced, a removal chamber 6 is formed between the first and second shut-off disc 3, 4 and an inner wall of the filter tube 5.
  • the height h of this removal chamber 6 is determined by the distance between the two shut-off disks 3, 4 to each other. Between the two shut-off disks 3, 4, the delivery line 2 is formed with recesses and thus perforated, so that a fluid connection between the delivery line 2 and the removal chamber 6 is present. By applying a suction pressure to the delivery line 2, water can be conveyed out of the removal chamber 6, which is in Fig. 1 is indicated by an arrow F.
  • a first volume body 7 is arranged, which is penetrated by the delivery line 2.
  • a second volume 8 is arranged below the second shut-off disk 4 and outside of the removal chamber 6.
  • Both solids 7, 8 are made of a flexible material, which in Fig. 1 symbolized by wavy lines. Due to the flexible material, the two solid bodies 7, 8 are flexible radially with respect to the well longitudinal axis 9.
  • the solids 7, 8 are respectively attached to the first and second shut-off disc 3, 4 and extend opposite to the removal chamber 6 along the well longitudinal axis 9.
  • the two solids 7, 8 are adapted in its outer diameter R substantially to an inner diameter of the filter tube 5 ,
  • Both solids 7, 8 can be filled with a fluid, wherein the outer peripheral surface expands in the direction of the inner wall of the filter tube 5 by increasing the pressure within the volume body. This is in Fig. 1 indicated by dash-dotted lines. If the outer circumferential surface of the two volume bodies 7, 8 comes into contact with the inner wall of the filter tube 5 as a result of said pressure increase and bears against it, a sealing effect can be achieved therebetween.
  • Fig. 2 shows a longitudinal cross-sectional view of the device 1 of Fig. 1 when fully inserted into a filter tube 5 of a well.
  • the well has a borehole edge 10 which encloses an annular space 11.
  • the annulus 11 is expanded with filter gravel or sand, outside of the annulus 11 natural mountains 12 and the aquifer adjoins.
  • the filter tube 5 is used, which is designed for a required water permeability, for example with slots.
  • Parallel to the delivery line 2 a supply line 13 is guided, which passes through both the first volume body 7 and the second volume body 8.
  • the supply line 13 is provided with perforated sections 13a, so that a fluid connection between the supply line 13 and an interior of the respective solids 7, 8 is.
  • a directional control valve 14 is provided at a removal chamber 6 opposite end face of the second volume body 8.
  • the delivery line 2 is formed perforated between the two shut-off discs 3, 4, namely in the form of an inlet seeder 2a.
  • the second volume body 8 and thus also the directional control valve 14 first comes in contact with well water.
  • the directional control valve 14 is opened, so that well water can flow from below through the supply line 13 or its perforated sections 13a into the interior of the first and second volume bodies 7, 8.
  • the directional control valve 14 is closed again. If so, as by the double arrow of Fig. 2 indicated, from above a fluid (eg water) pumped into the two solids 7, 8 and thus the internal pressure within the solid is increased, expand the outer peripheral surfaces of the volume body 7, 8 radially outwardly and sealingly come into contact with the inner wall of the Filter tube 5.
  • the internal pressure within the first and second volume body 7, 8 suitably reduced, so that the outer peripheral surfaces of the two solids 7, 8 get out of contact from the inner wall of the filter tube 5.
  • the length L of the device 1 is composed of the height h of the removal chamber 6 and the longitudinal extension of the respective bulk body 7, 8 together. As in Fig. 2 shown, the height of the removal chamber 6 and the respective longitudinal extents of the two solids 7, 8 each equal thirds.
  • the device will be referred to as a "symmetrical double piston chamber".
  • shut-off discs 3, 4 are optional, so that the operation of this embodiment is also given without shut-off.
  • the end faces of the solids 7, 8 adjacent to the removal chamber 6 expediently stiffened.
  • the device 1 After operation of the device 1 in the operating position of Fig. 3a for a sufficiently long time, the device 1 is then moved to a further operating position within the filter tube 5, namely approximately by a distance corresponding to the height h of the removal chamber 6. This is in Fig. 3b shown.
  • a suction pressure is applied to the feed line 2, it comes in the marked by the double arrow well section to a pronounced radial inflow of well water into the extraction chamber 6.
  • this this is indicated by appropriate arrows. This is accompanied by not only a cleaning of the annular space 11, but also a cleaning in the adjacent to the annulus 11 aquifer 12.
  • the purification of the aquifer 12 is related to the increased flow rate in the well section in question, which is due to the fact that because of the barrier effect of First and second volume body 7, 8 adjacent to the removal chamber 6 well water can not flow directly from the filter tube 5 and therefore the flow rate in the annulus area is increased radially adjacent to the removal chamber 6.
  • Fig. 3a illustrates that the well section marked by the double-headed arrow points twice with respect to its annulus ( Fig. 3a and Fig. 3c ), and in the operating position of Fig. 3b not only its annulus, but also the adjacent aquifer is cleaned.
  • the operating positions of the Fig. 3a or 3c have the effect of a pre-cleaning and a post-cleaning with respect to Brunnenringraums.
  • the directional control valve 14 can be opened to drain the water from the two solids 7, 8 down into the well. This reduces the weight of the device 1 and facilitates withdrawal of the device from the filter tube 5.
  • the 4 and 5 each show a longitudinal cross-sectional view through the well construction and the device 1.
  • the device 1 is shown in an initial operating position, analogous to the position of Fig. 3a .
  • the annular space sections I are thoroughly cleaned, since well water flows essentially parallel to the well longitudinal axis 9 in these sections.
  • Fig. 1 flows into the removal chamber 6.
  • the annulus sections I laterally adjoin the first and second solids 7, 8, respectively.
  • the device 1 is displaced in the filter tube 5 by a distance which essentially corresponds to the height of the withdrawal space 6, which is shown in FIG Fig. 4 is shown on the right.
  • the annular space sections II are then cleaned in a renewed operation of the device 1, which laterally adjacent to the first and second volume body 7, 8.
  • the device 1 is displaced within the filter tube 5 in the same direction by a distance generally equal to the total length of the device or to the embodiment according to FIG Fig. 4 the triple height h of the removal chamber 6 corresponds, see. Fig. 5 .
  • the end face of the second volume body 8 facing away from the removal space 6 reaches the point at which, in the preceding operating position (FIG. Fig. 4 right) the removal chamber 6 facing away from the end face of the first volume body 7 has been arranged.
  • new operating position of the device 1 are based on the Fig. 4 repeatedly explained processes.
  • Fig. 6 a further embodiment of the device 1 is explained. Same components in comparison to the above-described device of Fig. 1 respectively. Fig. 2 are here provided with the same reference numerals and not explained again to avoid repetition.
  • the device of Fig. 6 has an axially shortened inlet pipe 2a ', wherein the shut-off disks 3 and 4 have a smaller distance from one another. Accordingly, the height h of the removal chamber 6 is lower. The same applies to the total length L of the device, which is composed of the height h of the removal chamber 6 and the longitudinal extent of the two solids 7, 8.
  • the device according to Fig. 6 is referred to as a "shortened symmetrical double piston chamber".
  • the radial flow laterally adjacent to the removal chamber 6 within the annular space 11 and in the aquifer 12 increases during operation of the device 1.
  • the offset of the device is limited to the height of the removal chamber 6.
  • the resulting overhead in the operation of the device is the illustrated deep-acting discharge of particles from the adjacent to the annulus 11 aquifer 12 opposite.
  • the two solid bodies are made of a flexible material and are filled for sealing against the inner wall of the filter tube 5 with a fluid
  • the two solid bodies are formed in the form of a cylindrical rigid body, wherein the Each outer peripheral surfaces of these two solid bodies attached to a flexible layer, which is made of an open-cell foam or foam rubber.
  • the flexible layer is formed with its outer diameter slightly larger than the inner diameter of the filter tube.
  • Fig. 7 an embodiment of the device 1 according to the invention is explained, which is particularly suitable for use in wells without filter annulus, ie without built-in Filterkies thoroughlyung.
  • Fig. 7 shows a longitudinal cross-sectional view through the well structure and the device 1, the structure of which is explained in detail below.
  • the device 1 in the embodiment of Fig. 7 a delivery line 2, which opens into a first shut-off disc 3 '.
  • a second shut-off disc 4' by means of spacer webs 15 concentric and substantially parallel thereto attached.
  • the first volume body 7 ' is in the form of a rigid cylindrical body.
  • the delivery line 2 passes through the first volume body 7 "which is fastened to the first shut-off disk 3.
  • the second volume body 8 ' is likewise embodied in the form of a rigid cylindrical body which is fastened below the second shut-off disk 4.
  • the two shut-off disks 3', 4 ' are analogous to the embodiment of Fig. 1 matched with its outer diameter at an inner diameter of the filter tube 5.
  • the two solids 7 ', 8' are formed slightly smaller than the inner diameter of the filter tube with their respective outer diameters.
  • a flexible layer 17 is attached, which is made of an open-cell foam rubber.
  • the layer 17 is formed slightly larger than the inner diameter of the filter tube 5 with its outer diameter.
  • the flexible layers 17 on the first or second volume body 7 ', 8' are slightly compressed, so that they tightly conform to an inner wall of the filter tube 5.
  • the pores of the flexible layer 17 fill, so that a sealing effect between an outer peripheral surface of the first and second volume body 7 ', 8' and the inner wall of the filter tube 5 forms.
  • the cleaning or activation of the well by means of the device of Fig. 7 takes place in a continuous process in which the device is continuously displaced within the filter tube 5 during its operation.
  • the optimal rate of displacement may be selected such that dischargeable particles may be transported into the sampling space 6 'from a location located at a certain radial distance from the filter in the annulus during the time that the well water flow acts on that location.
  • the achieved substance discharge can be measured continuously and thus the efficiency of the well cleaning or activation can be controlled. If the substance discharge does not reach a desired value, the operation of the device 1 can be repeated at this point of the well, where appropriate, the displacement speed of the device within the filter tube 5 is contiguous.
  • the depth effect of the cleaning measure is regulated by the level of the delivery rate.
  • Fig. 7 The device according to Fig. 7 is called "moving double-piston gap chamber" and is particularly suitable for activation and regeneration of well structures without built-in filter gravel.
  • a fountain type is in Fig. 7 shown in which at the borehole edge 10 of the well directly the mountains or the aquifer 12 adjacent.
  • Fig. 8 is shown in a simplified representation in principle, a further embodiment of the device 1 according to the invention.
  • the delivery line 2 opens into a corresponding recess of the first shut-off disk 3 ".”
  • a second shut-off disk 4" is fastened concentrically and substantially parallel thereto, namely by means of a plurality of telescopic punches 18.
  • the distance of the telescopic pistons can be determined by means of these telescopic punches both shut - off disks 3 ", 4" are adjusted and thus the height of the removal space between the two shut - off disks can be changed
  • Fig. 8 is a small distance between the two shut-off disks shown to each other with thick solid lines. With dash-dotted lines a changed position for the second shut-off disc 4 "is shown, in which it has a greater distance from the first shut-off disc 3".
  • a volume body 7 ", 8" is fastened to each of the first and second shut-off disk 3 “, 4", the second shut-off disk 8 "being shown only partially for the sake of simplicity Filter tube 5.
  • the solids 7 ", 8” can with a flexible layer (see. Fig. 7 ), which ensures a sufficient sealing effect with the inner wall of the filter tube 5.
  • the flexible layer allows a displacement of the device 1 within the filter tube 5, without a pressure medium control with respect to the solid is required.
  • the flexible layer makes it possible to adjust the two shut-off disks 4 "to one another in order to change the height of the removal space 6.
  • a further embodiment according to the invention of the device 1 is shown in a longitudinal cross-sectional view.
  • the first and second Bulk body 7 "', 8'" are both formed as a substantially rigid cylindrical body whose outer diameter is slightly smaller than the inner diameter of the filter tube 5 is selected.
  • the first volume body 7 "' is penetrated by a through-opening 19.
  • the delivery line 2 is passed through this through-opening 19, wherein the inner diameter of the through-opening 19 and the outer diameter of the delivery line are adapted to each other such that the first volume body 7"' clamping and play-free on the delivery line 2 in well longitudinal axis 9 can be moved.
  • the second volume body 8 '" is fixed to a free end of the delivery line 2, for example, by welding or the like
  • the delivery line 2 is perforated in its area adjacent to the second volume body 7"'.
  • a distance of the two solids 7 "', 8'" determines the height h of the removal chamber 6.
  • the height h of the removal chamber 6 can be changed by displacing the first volume body 7 "'relative to the delivery line 2.
  • a locking device 20 is attached to the first volume body 7" by means of which the first volume body 7 "' can be fixed relative to the delivery line The locking device 20 fixes a position of the first volume body 7 "'relative to the delivery line 2, resulting in a predetermined height h of the removal space 6.
  • the height h of the removal chamber 6 can either be increased or decreased.
  • a pressure-controlled sealing body used in a required sealing seat analogous to the embodiment according to Fig. 1 is pressurized with a fluid.
  • the device 1 in the embodiment according to Figure 9 is characterized by simplicity and robustness, with simple means the height h of the removal chamber 6 is variable.
  • the height h of the extraction chamber can also be adjusted when the device 1 is already introduced into the filter tube 5.
  • Fig. 9 not shown, can be arranged on the solids 7 "', 8"' adjacent to the removal chamber 6 shut-off, analogous to the embodiment according to Fig. 1 , It is understood that on the first volume body 7 "'attached shut-off disk has a passage opening through which the feed line 2 is guided to allow a displacement of the first volume body 7"' in connection with this shut-off.
  • a further embodiment of the device 1 is shown in a longitudinal cross-sectional view.
  • the first and second solids 7 "", 8 “" are integrally formed from an annular cylinder 21, the first solid 7 "" forming an upper part of this cylinder 21 and the lower solid 8 “” forming a lower part of this cylinder 21.
  • the cylinder 21 is at its lower end, ie at one closed at the lower end face of the second volume body, and has at its upper end, ie at an upper end face of the first volume body 7 "" an opening 22.
  • the cylinder 21 is designed hollow inside and thus forms a removal chamber 6, wherein an outer wall of the cylinder 21 is formed perforated in the region of its middle third. Through this perforation, well water can flow from the outside into the cylinder 21, resulting in Fig. 10 indicated by arrows.
  • the delivery line 2 is introduced from above through the opening 22 in the removal chamber 6, ie in the interior of the cylinder 21 and connected to a submersible pump 23.
  • the underwater motor pump 23 is received within the cylinder 21 and extends substantially parallel to the longitudinal axis of the cylinder 21.
  • the length of the submersible pump 23 and the number of their motor stages is adapted to the necessary flow rate of the device 1.
  • the underwater motor pump 23 has an inlet pipe 24, which is arranged in front of an inlet of the conveying line and acts as a filter.
  • the underwater motor pump 23 is enveloped in the longitudinal direction by a jacket tube 24, which is open at its lower end side, where the submersible pump 23 ends.
  • the jacket tube 24 is adjacent to the inlet pipe 24 fixedly connected to an outer peripheral surface of the conveying line 2.
  • the casing tube 24 essentially fulfills two tasks: on the one hand, to direct the water conveyed by the underwater motor pump 23 selectively in the direction of the inlet pipe 24 and, on the other hand, to ensure cooling of the underwater motor pump 23 by the well water flowing past it.
  • the jacket tube 24 extends in its longitudinal extension to below the last stage of the submersible motor pump 23.
  • the embodiment of the device 1 according to Fig. 1 is because of the one-piece of the first and second volume body 7 "", in the form of the cylinder 21 very robust and can be produced inexpensively.
  • the submersible-motor pump 23 can also be arranged outside the cylinder 21 or the removal chamber 6, in particular when the submersible-motor pump 23 has a larger diameter because of a required large pumping capacity.
  • the embodiments according to the Fig. 9 and 10 can be operated to clean or activate a well in the same way as the embodiments according to the Fig. 2 and the Fig. 6 and have the same quality of cleaning action. To avoid repetition, reference is made to the explanation above with respect to the operation of the device Fig. 2 to Fig. 6 directed.

Claims (9)

  1. Dispositif (1) d'activation ou de nettoyage des puits à tube-filtre avec un tube-filtre (5) comportant
    un premier et un deuxième corps de volume (7, 8) s'étendant chacun le long de l'axe longitudinal du puits (9), qui sont adaptés avec leur diamètre extérieur au diamètre intérieur du tube-filtre (5) et sont formés de manière flexible à leur surface périphérique extérieure au moins radialement par rapport à l'axe longitudinal du puits (9) de manière qu'un effet d'étanchéité est obtenu entre les surfaces périphériques extérieures des corps de volume respectifs (7, 8) et la paroi intérieur du tube-filtre (5), au moins un des deux corps de volume (7, 8) comportant un corps rigide cylindrique qui est formé avec son diamètre extérieur légèrement plus petit que le diamètre intérieur du tube-filtre (5), une couche flexible (17) étant agencée à une surface périphérique extérieure du corps cylindrique, le diamètre extérieur de la couche flexible (17) étant légèrement plus grand que le diamètre intérieur du tube-filtre (5),
    un espace de prélèvement (6) étant formé entre le premier et le deuxième corps de volume (7, 8) et la paroi intérieure du tube-filtre (5), qui peut être lié hydrauliquement avec un dispositif de pompage et dont la hauteur (h) est déterminée par la distance des deux solides (7, 8) entre eux,
    l'extension longitudinale des corps de volume respectifs (7, 8) dans la direction de l'axe longitudinal du dispositif correspondant à la hauteur (h) de l'espace de prélèvement (6),
    caractérisé en ce que
    la couche flexible (17) est fabriquée d'une mousse, surtout d'une mousse à cellules ouvertes, ou d'un caoutchouc mousse,
  2. Dispositif (1) selon la revendication 1, dans lequel la distance entre les corps de volume (7, 8) est ajustable de manière que le rapport d'allongement entre la hauteur (h) de l'espace de prélèvement (6) et l'extension longitudinale des corps de volume (7, 8) est variable.
  3. Dispositif (1) selon la revendication 1 ou 2, dans lequel un premier et/ou un deuxième disque d'arrêt (3, 4) chacun est agencé aux corps de volume (7, 8) adjacent à l'espace de prélèvement (6), les deux disques d'arrêt (3, 4) étant espacés entre eux concentriquement et parallèlement, et adaptés avec leur diamètre extérieur au diamètre intérieur du tube-filtre (5).
  4. Dispositif (1) selon l'une quelconque des revendications 1 à 3, dans lequel les disques d'arrêt (3, 4) sont formés chacun de deux éléments de disque entre lesquels une rondelle de joint est encadré, un diamètre extérieur des éléments de disque étant plus petit que le diamètre intérieur du tube-filtre (5) et un diamètre extérieur de la rondelle de joint étant plus grand que le diamètre intérieur du tube-filtre (5), une rondelle de joint respective étant fabriqué d'un caoutchouc souple ou similaire qui est fixé entre un disque d'arrêt (3, 4) et un autre disque en tôle avec le même diamètre que le disque d'arrêt.
  5. Procédé d'activation ou de nettoyage des puits à tube-filtre avec les étapes suivantes :
    a) Fournir un dispositif (1) selon l'une quelconque des revendications 1 à 4, une opération du dispositif (1) s'effectuant par application d'une pression d'aspiration à l'espace de prélèvement (6) au moyen du dispositif de pompage de manière que de l'eau est débitée de l'espace de prélèvement (6) et donc des particules sont déchargées du puits à tube-filtre,
    b) Introduire le dispositif (1) dans un tube-filtre (5) d'un puits à tube-filtre jusqu'à ce que le dispositif (1) soit entièrement immergé dans l'eau du puits,
    c) Opération du dispositif (1) dans une position initiale de fonctionnement dans laquelle le dispositif (1) est agencé dans une position déterminée relative à l'axe longitudinal du puits (9),
    d) Déplacer le dispositif (1) par une distance dans une autre position de fonctionnement, la distance correspondante à la hauteur (h) de l'espace de prélèvement (6), et
    e) Opération du dispositif (1) dans l'autre position de fonctionnement, les étapes d) et e) étant répétées,
    caractérisé par les autres étapes:
    f) Une seule répétition des étapes d et e,
    g) Déplacer le dispositif (1) dans une nouvelle position de fonctionnement dans la même direction le long du tube-filtre (5) par une distance correspondante à trois fois la hauteur (h) de l'espace de prélèvement (6) de manière que dans la nouvelle position de fonctionnement la face frontale du deuxième solide (8) orientée à l'opposé de l'espace de prélèvement (6) se trouve à l'endroit où dans la position précédente de fonctionnement la face frontale du premier corps de volume (7) orienté à l'opposé de l'espace de prélèvement (6) a été agencée
    h) Opération du dispositif (1) dans la nouvelle position de fonctionnement selon l'étape g.
  6. Procédé selon la revendication 5, dans lequel un déplacement du dispositif (1) dans une autre position de fonctionnement a lieu lorsque dans le position précédente de fonctionnement la valeur est inférieure à une teneur admissible de matières solides de particules contenue dans l'eau débitée.
  7. Procédé selon la revendication 5 ou 6, dans lequel le dispositif (1) avant l'étape d) est mis hors service en déconnectant le dispositif de pompage ou au moins abaissant la pression d'aspiration appliquée à l'espace de prélèvement (6).
  8. Procédé selon l'une quelconque des revendications 5 à 7, dans lequel après l'étape h) l'étape f) sera effectuée.
  9. Procédé selon la revendication 8, dans lequel après l'étape h) l'étape f) sera effectuée aussi souvent que cela correspond à la longueur du tube-filtre (5) du puits.
EP08843205.9A 2007-10-23 2008-10-22 Dispositif et procédé d'activation ou de nettoyage de puits Active EP2334874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050966A DE102007050966A1 (de) 2007-10-23 2007-10-23 Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen
PCT/DE2008/001701 WO2009052791A2 (fr) 2007-10-23 2008-10-22 Dispositif et procédé d'activation ou de nettoyage de puits

Publications (2)

Publication Number Publication Date
EP2334874A2 EP2334874A2 (fr) 2011-06-22
EP2334874B1 true EP2334874B1 (fr) 2016-03-02

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Application Number Title Priority Date Filing Date
EP08843205.9A Active EP2334874B1 (fr) 2007-10-23 2008-10-22 Dispositif et procédé d'activation ou de nettoyage de puits

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EP (1) EP2334874B1 (fr)
DE (2) DE102007050966A1 (fr)
DK (1) DK2334874T3 (fr)
WO (1) WO2009052791A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009018383B4 (de) 2009-04-26 2011-04-07 Nillert, Peter, Dr. Ing. Vorrichtung zum Aktivieren oder Reinigen von Filterrohrbrunnen
DE102010010181B3 (de) 2010-03-03 2011-07-21 Teftorec GmbH, 47445 Vorrichtung und Verfahren zum Erzeugen von Hochdruck-Impulsen
DE202010003119U1 (de) 2010-03-03 2011-08-23 Teftorec Gmbh Vorrichtung zum Erzeugen von Hochdruck-Impulsen
DE102015002476A1 (de) * 2015-02-26 2016-09-01 Teftorec Gmbh Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen

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DE285159C (fr) *
US2288233A (en) * 1940-11-08 1942-06-30 Artesian Well & Equipment Co I Apparatus for increasing the flow of water in artesian wells
US2512801A (en) * 1947-02-17 1950-06-27 Shell Dev Perforation washer
DE973316C (de) * 1953-09-16 1960-01-21 Katharina Geigenmueller Vorrichtung zum Regenerieren, Reinigen und Desinfizieren von Filtertiefbrunnen
US3032116A (en) * 1958-12-11 1962-05-01 Jersey Prod Res Co Drill stem testing packers, pipe, and couplers
DD58942A1 (de) * 1966-12-23 1967-11-20 Vorrichtung zum Absperren und Abpumpen von Grundwasserführern in Bohrbrunnen
US3945436A (en) * 1975-01-07 1976-03-23 Rostislav Nebolsine Method and apparatus for cleansing well liner and adjacent formations
DE2631513C3 (de) * 1976-07-10 1981-01-29 Charlottenburger Motoren- Und Geraetebau Kg H.W. Paul, 1000 Berlin Einrichtung zum Reinigen von Brunnenschächten
DE2947282C2 (de) * 1979-11-20 1986-08-14 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Reinigungsgerät für Brunnenschächte
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
US4484625A (en) * 1982-04-20 1984-11-27 The Western Company Of North America Well casing perforated zone washing apparatus
DE3445316A1 (de) * 1984-12-07 1986-06-19 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Vorrichtung zum reinigen von brunnenschaechten
DE8801702U1 (fr) * 1988-02-10 1988-04-14 Meister, Karl, 8346 Simbach, De
DE4017013C2 (de) * 1990-05-26 1994-01-27 Aquaplus Brunnensanierung Kaet Vorrichtung zum Reinigen von Brunnenschächten
DE9014275U1 (fr) * 1990-10-15 1990-12-20 Aquaplus - Brunnensanierung Kaethe Munding Gmbh & Co. Kg, 8640 Kronach, De
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GB9902436D0 (en) * 1999-02-04 1999-03-24 Solinst Canada Ltd Double acting packer

Also Published As

Publication number Publication date
WO2009052791A2 (fr) 2009-04-30
DE102007050966A1 (de) 2009-04-30
DE202008014113U1 (de) 2009-02-05
EP2334874A2 (fr) 2011-06-22
DK2334874T3 (en) 2016-06-13
WO2009052791A3 (fr) 2009-07-09

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