EP2334874A2 - Dispositif et procédé d'activation ou de nettoyage de puits - Google Patents

Dispositif et procédé d'activation ou de nettoyage de puits

Info

Publication number
EP2334874A2
EP2334874A2 EP08843205A EP08843205A EP2334874A2 EP 2334874 A2 EP2334874 A2 EP 2334874A2 EP 08843205 A EP08843205 A EP 08843205A EP 08843205 A EP08843205 A EP 08843205A EP 2334874 A2 EP2334874 A2 EP 2334874A2
Authority
EP
European Patent Office
Prior art keywords
filter tube
removal chamber
well
volume body
shut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08843205A
Other languages
German (de)
English (en)
Other versions
EP2334874B1 (fr
Inventor
Peter Nillert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teftorec GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2334874A2 publication Critical patent/EP2334874A2/fr
Application granted granted Critical
Publication of EP2334874B1 publication Critical patent/EP2334874B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 operate 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 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 a device and a method for activating or cleaning wells, which intensified by 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 substantially adapted to the inner diameter of the filter tube and formed on its outer peripheral surface at least radially with respect to the well longitudinal axis, so that a sealing effect between the outer peripheral surfaces of the respective solids and the inner wall of the Filterrrohrs is achieved.
  • 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 substantially corresponds to the height of the removal space.
  • 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. In their function as a sealing piston, the solids ensure a seal against the filter tube of the well along their entire length.
  • the erfindungsgeffleBe device is equally suitable for use in vertical and horizontal filter strands of filter tube wells with built-in annular space between the filter tube and mountains Filterkies deliberatelyung, as well as for use in well structures without built-in filter gravel.
  • the second volume Upon insertion of the device into the filter tube, the second volume first comes into contact with well water.
  • 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.
  • This has the effect that the water flows into the extraction chamber reinforced radially through the annulus or from the adjacent mountains, supplemented by shares of well water, which flow in the areas of the annulus adjacent to the solids axially with respect to the well longitudinal axis in the direction of the sampling chamber and then enter it.
  • the solids thus cause an inflow of the well water to the central open chamber in the form of the extraction chamber, which inflow flows along or parallel to the well longitudinal axis relative to the sealing volumetric solids. Due to the two solids and the increased flow velocity caused by them radially to the annulus, on the one hand the deep cleaning in the mountains and on the other hand the cleaning in the annulus adjacent to the solid bodies is improved.
  • 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, via a length-adjustable telescopic ram or the like, by means of which the Solid bodies are connected to each other 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 in 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 mounted displaceably on the conveyor line, so that by a displacement of this volume body relative to the feed line along the
  • Feed line slidable solids can be determined by a locking device to a defined and consistent
  • At least one of the two solid bodies can be made of a flexible material and filled by a fluid.
  • a fluid By increasing the fluid pressure within the volume body whose outer peripheral surface is movable in the direction of the inner wall of the filter tube, so that the outer peripheral surface presses against the inner wall of the filter tube.
  • the outer peripheral surface of the volume body is sealed against the inner wall of the filter tube. It is understood that the volume body is pressurized only when pumping well water from the sampling space, wherein the positive pressure within the volume body is reduced to move the device within the filter tube to a new operating position and thereby the outer peripheral surfaces of the volume body out of contact from the Pass inside wall of the filter tube.
  • a supply line can be guided substantially parallel to the delivery line, which supply line is in fluid communication with the interior of the first and the second volume body. This allows a space-saving feeding of fluid into the volume body to increase the internal pressure when a seal between the volume body and the inner wall of the filter tube is required.
  • the second volume body which first comes into contact with well water during insertion of the device into the filter tube, made of the flexible material.
  • a directional control valve may be provided at a lower end of the supply line adjacent to the removal chamber opposite edge of the second volume body. The first time the device is introduced into the filter tube, the directional control valve can be opened so that the second volume body fills with well water. After closing the directional control valve, the described pressure increase within the second volume body is achieved solely by a comparatively small amount of water, which is conveyed through the supply line into the second volume body. To ensure this Pressure increase, the supply line may be coupled to a vent line.
  • the directional control valve In a well exit of the device, ie when pulling the device out of the filter tube addition, the directional control valve is opened, so that the water can flow out of the second volume out in the well. This has the advantage that the weight of the device at the well exit is considerably reduced.
  • both solids can be made of the flexible material.
  • the supply line can pass through the first and the second volume body and be perforated within the respective volume body, so that the fluid connection to the volume body 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 solid, so that an undesired escape of fluid at a pressure increase within the solid is excluded.
  • At least one of the two solid bodies may consist of a rigid cylindrical body, which is formed with its outer diameter 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 solids is not required, which facilitates the operation of the device.
  • Cylindrical bodies with the flexible layer of foam, foam or the like on the outer circumferential surface are suitable for use in so-called winding wire filters, wherein the characteristic relief structure of
  • Filter tube inner wall is suitably sealed by the solid body 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 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 eg in the form of the above-described pressure-controlled sealing bodies or in the form of the flexible layer, can be mounted adjacent to the removal chamber, ie in an upper and lower region of the cylinder, which ensure a seal against an inner wall of the well filter tube , If the perforation of the annular cylinder extends beyond more than its central portion, the length of the outer wall of the annular cylinder may be adjacent to the extraction chamber or whose height is adjusted by a length of the applied on the outer peripheral surface of the annular cylinder seal body.
  • 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. In this case, the entire length or height of the device to one third by the height of the sampling room and two Third determined 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.
  • the height of the sampling 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 removal chamber takes the form of a gap chamber, wherein the distance between the two solid bodies is small to each other.
  • a method for activating or cleaning filter tube wells comprises the following steps: a) Provision of a device, as explained above, whereby the device is operated by applying a suction pressure to the withdrawal chamber by means of the pumping device, so that water is conveyed out of the removal chamber and thus B) inserting the device into a filter tube of a filter tube well until the device is completely submerged in the well water; c) operating the device in an initial operating position in which the device is located in a specific position with respect to the well longitudinal axis; d) shifting the device by a distance to a further operating position, which distance substantially corresponds to the height of the extraction space, and e) operation of the device in the further operating position.
  • 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.
  • 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 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.
  • a suction pressure is applied to the removal chamber.
  • a device in which the height of the withdrawal chamber is less than about 20% of the total length of the device along the longitudinal axis of the filter tube, the device being continuous along the filter tube during steps c) to e) is moved and is constantly in operation. Due to the comparatively small height of the removal chamber, the flow velocity is significantly increased radially with respect to the removal chamber in the adjoining annular space or mountains, so that both an optimal depth action cleaning within the mountains and a continuous displacement of the device within the filter tube are possible.
  • the height of the removal chamber is less than approximately 10% of the total length of the device, and in particular less than approximately 5% of the total length of the device.
  • the removal chamber takes the form of a gap chamber, wherein the distance between the two solid bodies is small to each other.
  • the flow velocity is increased radially with respect to the removal chamber or the gap chamber, thereby further improving the deep cleaning in the mountains.
  • Fig. 1 is a simplified longitudinal cross-sectional view of an inventive
  • FIG. 2 shows a longitudinal cross-sectional view of the device of FIG. 1 in one
  • FIG. 4 shows the device of Fig. 1 and Fig. 2 in an initial operating position and a further operating position within the filter tube
  • Fig. 5 device of Fig. 4 in a further operating position when it is displaced in the same direction along the filter tube therein 6 shows a longitudinal cross-sectional view of a device according to the invention in a further embodiment
  • FIG. 7 shows a longitudinal cross-sectional view of a device according to the invention in a further embodiment
  • Fig. 8 is a greatly simplified longitudinal cross-sectional view of a device according to the invention in a further embodiment, in which the distance between the two shut-off discs is adjustable to one another.
  • Fig. 9 is a simplified longitudinal cross-sectional view of an inventive
  • Fig. 10 is a simplified longitudinal cross-sectional view of an inventive
  • a first embodiment of a device 1 according to the invention and its structure and method of use will be explained in detail below with reference to FIGS. 1 to 5.
  • the device 1 comprises a delivery line 2, which can be longitudinally inserted into a filter tube of a well, which will be explained below with reference to FIG. 2.
  • 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 one another.
  • 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.
  • a suction pressure By applying a suction pressure to the delivery line 2, water can be conveyed out of the removal chamber 6, which is indicated by an arrow F in FIG.
  • 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 solid bodies 7, 8 are made of a flexible material, which is symbolized in Fig. 1 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 indicated in Fig. 1 by 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 it is 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 adjacent.
  • 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 Within the solids 7, 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 in
  • 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. If the device 1 is shifted to an initial operating position within the filter tube 5, the directional control valve 14 is closed again. If now, as indicated by the double arrow of Fig.
  • 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 shown in Fig. 2, the height of the removal chamber 6 and the respective longitudinal extents of the two solid bodies 7, 8 each equal thirds.
  • the device will be referred to as a "symmetrical double piston chamber".
  • shut-off disks 3, 4 are optional, so that the functioning of this embodiment is also provided without shut-off disks.
  • the end faces of the solids 7, 8 adjacent to the removal chamber 6 expediently stiffened.
  • FIGS. 3a to 3c This well section is indicated in FIGS. 3a to 3c with a double arrow.
  • the device 1 After an operation of the device 1 in the operating position of Fig. 3a for a sufficiently long time, the device 1 is then in a further Operating position shifted within the filter tube 5, namely approximately a distance corresponding to the height h of the removal chamber 6. This is shown in Fig. 3b.
  • a suction pressure is applied to the feed line 2, there is in the marked by the double arrow well section to a pronounced radial inflow of well water into the extraction chamber 6.
  • this In Fig. 3b this is indicated by corresponding 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. 3c the device 1 is then displaced again within the filter tube 5 by a distance which essentially corresponds to the height of the removal chamber 6. This is shown in Fig. 3c.
  • well water flows from the well section marked by the double arrow from below through the annular space 11 into the removal chamber 6.
  • FIGS. 3a to 3c illustrates that the well portion marked by the double arrow is cleaned twice with respect to its annulus (FIGS. 3a and 3c), and in the operating position of FIG. 3b not only its annulus but also its annulus adjacent aquifer is cleaned.
  • the operating positions of Fig. 3a and 3c have the effect of a pre-cleaning and a post-cleaning with respect to the 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.
  • FIGS. 4 and 5 there is shown a sequence with which the well can be efficiently cleaned by the apparatus of FIG. 1 mainly with respect to its annulus 11.
  • FIG. 4 and 5 each show a longitudinal cross-sectional view through the Wellausbau and the device 1.
  • Fig. 4 left the device 1 in a
  • annular space sections I are thoroughly cleaned, as in these sections well water flows into the extraction chamber 6 substantially parallel to the well longitudinal axis 9 (FIG.
  • the annulus sections I laterally adjoin the first and second solids respectively
  • the device 1 is moved by a distance that is substantially the same
  • Fig. 4 is shown on the right. In this new operating position, 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.
  • annular space II in the operating position shown on the left in FIG. 4 or the annular space I (in the operating position shown on the right in FIG. 4) additionally cleaned by the radial flow of the well water, analogous to the representation of Fig. 3b.
  • the device 1 is displaced within the filter tube 5 in the same direction by a distance which is generally the total length of the device or for the embodiment of FIG. 4 corresponds to three times the height h of the removal chamber 6, cf. Fig. 5.
  • the operations explained with reference to FIG. 4 are repeated.
  • FIG. 6 another embodiment of the apparatus 1 will be explained.
  • the same components in comparison to the device of FIG. 1 or FIG. 2 explained above are provided with the same reference numerals herein and are 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 each other. Accordingly, the height h of the removal chamber 6 is lower.
  • 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.
  • FIG. 7 shows a longitudinal cross-sectional view through the Wellausbau and the device 1, the structure of which is explained in detail below.
  • the device 1 has 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 solid T is in the form of a rigid cylindrical body.
  • the delivery line 2 passes through the first volume body 7 ', which is attached to the first shut-off disc 3.
  • the second volume body 8 ' is also formed in the form of a rigid cylindrical body which is fixed below the second shut-off disk 4.
  • the two shut-off disks 3 ', 4' are matched with their outer diameter to an inner diameter of the filter tube 5 analogously to the embodiment of FIG.
  • 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 and second solids 7 ', 8' are slightly compressed so that they closely 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 circumferential surface of the first and second volume body 7 ', 8 1 and the inner wall of the filter tube 5 forms.
  • the annulus area becomes radial adjacent to the removal chamber 6 ', including the adjacent aquifer 12 cleaned with depth effect. This is achieved by the high radial flow velocity, in particular in the adjacent mountains in the area between the solids T, 8 '.
  • the cleaning or activation of the well by means of the device of Fig. 7 is carried out 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.
  • the device according to FIG. 7 is referred to as a "moving double-piston gap chamber" and is particularly suitable for activating and regenerating well structures without built-in filter gravel.
  • a type of well is shown in Fig. 7, in which at the well edge 10 of the well directly the mountain or the aquifer 12 adjacent.
  • the foam-like flexible layer 17 can also be used in the device according to one of FIGS. 1 to 6. This has the advantage that a displacement of the device 1 within the filter tube 5 without a change in the internal pressure within the solids 7, 8 is possible and can be done correspondingly faster. In contrast, a pressurization of the volume body 7, 8 is recommended in the event that a particularly good sealing effect between the outer peripheral surfaces of the volume body 7, 8 and the inner wall of the filter tube 5 is necessary, or if the inner surface of the filter tube has such a strong relief, that the flexible layer would be heavily stressed during a displacement of the device within the filter tube.
  • FIG. 8 a further embodiment of the device 1 is shown in a basically greatly simplified representation.
  • 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
  • the height of the removal space between the two shut-off disks is thus adjusted, and a small distance between the two shut-off disks relative to one another is shown with thick solid lines., With dash-dot lines, a changed position for the second shut-off disk 4 shown "in which it has a greater distance from the first shut-off disc 3".
  • the first and second shut-off disc 3 ", 4" are each a volume body 7 ", 8" attached, the second shut-off disc 8 "for simplicity only partially shown.
  • the solid bodies 7 ", 8” can either be produced from a flexible material (cf., FIG. 1) in order to achieve an interference with the inner wall of the filter tube 5 by an increase in internal pressure.
  • the solid bodies 7 ", 8” can also be encased 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.
  • FIG. 9 shows a further embodiment of the device 1 in a longitudinal cross-sectional view.
  • the first and second solids 7 '", 8'" are both formed as 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 fastened 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'".
  • the removal chamber 6 is formed, wherein a distance of the two volume body 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 determines a position of the first volume body T "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 in a required sealing seat analogous to the embodiment of FIG. 1 with a fluid under pressure is set.
  • the second, ie the lower, volume body 8 '" can be equipped with a directional control valve 14, analogous to the embodiment of FIG.
  • the device 1 in the embodiment of 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. 10 shows a further embodiment of the device 1 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, i. is closed at a lower end face of the second volume body 8 "", and has at its upper end, i. on 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, which is indicated by arrows in FIG.
  • the delivery line 2 is from the top through the opening 22 into the removal chamber 6, i. introduced into 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 connected adjacent to the inlet pipe 24 fixed to an outer peripheral surface of the feed 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 well water is conveyed past the submersible motor pump 23 upwards in the direction of the inlet pipe 24, and is finally conveyed out of the well in the conveying line 2 as indicated by the arrow F.
  • the embodiment of the device 1 according to FIG. 1 is very robust because of the one-piece nature of the first and second volume body 7 "", 8 "" in the form of the cylinder 21 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 due to a required large pump capacity.
  • FIGS. 9 and 10 can be operated in the same way for cleaning or activating a well as the embodiments according to FIG. 2 and FIG. 6 and have the same quality of cleaning action. In order to avoid repetition, reference is made to the explanation of the operation of the device on FIGS. 2 to 6 above.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • 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, comportant un premier et un deuxième corps volumique (7, 8) s'étendant respectivement le long de l'axe longitudinal (9) du puits, essentiellement adaptés avec leur diamètre extérieur au diamètre intérieur du tube-filtre (5), et conçus flexibles sur leur surface périphérique extérieure, au moins radialement par rapport à l'axe longitudinal (9) du puits, de telle manière qu'un effet de joint est obtenu entre les surfaces périphériques extérieures des corps volumiques respectifs (7, 8) et la paroi intérieure du tube-filtre (5). Un espace de prélèvement (6) est formé entre le premier et le deuxième corps volumique (7, 8) et la paroi intérieure du tube-filtre (5), l'espace de prélèvement pouvant être connecté hydrauliquement à un dispositif de pompage, la hauteur (h) de l'espace étant définie par l'écart entre les deux corps volumiques (7, 8). L'extension longitudinale des corps volumiques respectifs (7, 8) en direction de l'axe longitudinal du dispositif correspond essentiellement à la hauteur (h) de l'espace de prélèvement (6).
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 true EP2334874A2 (fr) 2011-06-22
EP2334874B1 EP2334874B1 (fr) 2016-03-02

Family

ID=40340412

Family Applications (1)

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

Country Status (4)

Country Link
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
DE202010003119U1 (de) 2010-03-03 2011-08-23 Teftorec Gmbh Vorrichtung zum Erzeugen von Hochdruck-Impulsen
DE102010010181B3 (de) 2010-03-03 2011-07-21 Teftorec GmbH, 47445 Vorrichtung und Verfahren 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 (de) * 1988-02-10 1988-04-14 Meister, Karl, 8346 Simbach Regenerierungseinrichtung für Filterbrunnen
DE4017013C2 (de) * 1990-05-26 1994-01-27 Aquaplus Brunnensanierung Kaet Vorrichtung zum Reinigen von Brunnenschächten
DE9014275U1 (de) * 1990-10-15 1990-12-20 Aquaplus - Brunnensanierung Käthe Munding GmbH & Co. KG, 8640 Kronach Abdichteinrichtung für ein Brunnenreinigungsgerät
DE4338518A1 (de) * 1993-11-11 1995-05-18 Ieg Ind Engineering Gmbh Trennwandung für den Zwischenraum zwischen ineinandergeschobenen Hohlkörpern, insbesondere für Brunnenrohre
GB9902436D0 (en) * 1999-02-04 1999-03-24 Solinst Canada Ltd Double acting packer

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Also Published As

Publication number Publication date
WO2009052791A2 (fr) 2009-04-30
EP2334874B1 (fr) 2016-03-02
DE202008014113U1 (de) 2009-02-05
WO2009052791A3 (fr) 2009-07-09
DK2334874T3 (en) 2016-06-13
DE102007050966A1 (de) 2009-04-30

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