EP0376422A2 - Method of cleaning well shafts - Google Patents

Method of cleaning well shafts Download PDF

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Publication number
EP0376422A2
EP0376422A2 EP89250124A EP89250124A EP0376422A2 EP 0376422 A2 EP0376422 A2 EP 0376422A2 EP 89250124 A EP89250124 A EP 89250124A EP 89250124 A EP89250124 A EP 89250124A EP 0376422 A2 EP0376422 A2 EP 0376422A2
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EP
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Prior art keywords
washing liquid
deposits
measurements
dissolved
additives
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Granted
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EP89250124A
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German (de)
French (fr)
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EP0376422B1 (en
EP0376422A3 (en
Inventor
Kerry F. Dipl.-Ing. Paul
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Charlottenburger Motoren- und Geratebau KG Hw Paul
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Charlottenburger Motoren- und Geratebau KG Hw Paul
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Publication of EP0376422A3 publication Critical patent/EP0376422A3/en
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    • 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
    • E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/10—Locating fluid leaks, intrusions or movements
    • E21B47/113—Locating fluid leaks, intrusions or movements using electrical indications; using light radiations

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • This object is achieved in that the ion concentration of various ions dissolved from the deposits in the washing liquid is measured during the cleaning process, that the duration of the cleaning process is controlled depending on the result of these measurements, and that the concentration of the ions released from the deposits in the washing liquid depending on the result of these measurements is suitably reduced for the further cleaning process.
  • the ions to be measured are, for example, the cations iron, manganese, calcium and / or aluminum, as well as the anions, e.g. Sulfate and / or chloride, and also the cations and anions of the washing liquid additives.
  • sum parameter parameters of the washing liquid containing the various dissolved deposits can also be measured and the further cleaning process can also be influenced as a function of these measurements.
  • the master parameters are essentially the pH value, the conductivity and / or the redox voltage of the washing liquid.
  • the measurement can be carried out continuously or discontinuously. By determining the respective ion concentration and in particular its change over time, it can be determined which composition the Deposits and which detergent composition is the cheapest. If, for example, the concentration of one type of ion increases only very slowly, although the absorption capacity of the washing liquid for these ions is far from exhausted, this means that these ion-forming deposits are only present to a negligible extent. If, on the other hand, there is no longer an increase in the concentration of an ion type because the absorption capacity of the washing liquid has been exhausted for this purpose, then suitable measures must be taken to ensure a further absorption of these ions in the washing liquid chain.
  • the washing liquid is expediently led out of the shaft upwards and then returned to the shaft. This also facilitates the removal of used and fresh washing liquid, since these measures can then also be carried out outside the shaft.
  • the fresh washing liquid can ver by reducing the ion concentration of the dissolved deposits in the removed needed washing liquid can be obtained.
  • the composition of the fresh washing liquid supplied is preferably determined by the result of the measurement, so that the absorption capacity is increased specifically for ions which are still present to a considerable extent in the deposits.
  • the deposits to be removed must not only be those that gradually accumulate during well operation, but can also be so-called drilling fluid additives that were used in the manufacture of the well and then have to be removed, since they impair the performance of the well.
  • the detergent liquid can also contain additives suitable for disinfection.
  • the measurements carried out then also serve to control the disinfection and, if appropriate, by means of additional measurements to detect biological activities.
  • the total amount of the deposited deposits, divided into the individual types of ions measured can also be determined. This enables conclusions to be drawn about the condition of the respective well, for example at what intervals cleaning is carried out or whether the well should be replaced.
  • the concentration of the ions can be replaced by the continuous pumping out of the sample by continuous removal of ions from the washing liquid.
  • the figure thus represents only an example to explain the claimed method and in no way limits the application of the method by the representation of the figure.
  • the necessary measurements can be carried out inside or outside the well, depending on the requirements and the design of the system.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

A method of cleaning well shafts is described in which a washing liquid, consisting of the ground water with suitable admixtures, is forced out of the well filter pipe into gravel layers adjoining the filter-pipe wall and is drawn back again. Here, deposits, which reduce the capacity and are to be removed, can be dissolved with and in the admixtures so that they are dissolved by the washing liquid and are absorbed in the latter in the dissolved state. During the cleaning operation, the ion concentration of various ions, dissolved from the deposits, in the washing liquid is measured and the further cleaning operation is controlled as a function of the result of these measurements. In addition, summation-parameter command variables of the various dissolved deposits and of the washing liquid can also be measured, the further cleaning operation also being controlled as a function of these measurements.

Description

Die Erfindung betrifft ein Verfahren nach dem Ober­begriff des Anspruchs 1.The invention relates to a method according to the preamble of claim 1.

Bisher ist man bei der Reinigung von Brunnenschächten zumeist so vorgegangen, daß zunächst eine visuelle Inspektion des Schachtes durchgeführt wurde und hiernach beispielsweise die Zusammensetzung der Waschflüssigkeit und die Dauer des Reinigungsvorganges bestimmt wurden. Eine Vorrichtung zur Durchführung dieses Verfahrens ist beispielsweise aus der DE-PS 34 45 316 bekannt.Up to now, the cleaning of well shafts has mostly been carried out by first performing a visual inspection of the shaft and then determining, for example, the composition of the washing liquid and the duration of the cleaning process. A device for performing this method is known for example from DE-PS 34 45 316.

Dieses Verfahren ist naturgemäß sehr ungenau, da die visuelle Untersuchung nur einen ungenügenden Aufschluß über den Umfang und die Art der Verunreinigung gibt. Daher tritt entweder der Fall ein, daß die Reinigung nicht ausreichend ist, oder der Fall, daß zuviel Waschmittel zugeführt wird.This method is naturally very imprecise, since the visual examination only provides insufficient information about the extent and type of contamination. Therefore, there is either the case that the cleaning is insufficient or the case that too much detergent is added.

Es ist Aufgabe der vorliegenden Erfindung, eine Verfahrenssteuerung zur Reinigung von Brunnen­schächten anzugeben, die gute Reinigungsergebnisse bewirkt und kostengünstig arbeitet.It is an object of the present invention to provide a process control for cleaning well shafts, which brings about good cleaning results and works inexpensively.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß während des Reinigungsvorganges die Ionen­konzentration verschiedener aus den Ablagerungen gelöster Ionen in der Waschflüssigkeit gemessen wird, daß die Dauer des Reinigungsvorganges in Abhängigkeit vom Ergebnis dieser Messungen gesteuert wird, und daß die Konzentration der aus den Ab­lagerungen gelösten Ionen in der Waschflüssigkeit in Abhängigkeit vom Ergebnis dieser Messungen für den weiteren Reinigungsverlauf geeignet verringert wird.This object is achieved in that the ion concentration of various ions dissolved from the deposits in the washing liquid is measured during the cleaning process, that the duration of the cleaning process is controlled depending on the result of these measurements, and that the concentration of the ions released from the deposits in the washing liquid depending on the result of these measurements is suitably reduced for the further cleaning process.

Die zu messenden Ionen sind zum Beispiel die Kationen Eisen, Mangan, Calcium und/oder Aluminium, sowie die Anionen, z.B. Sulfat und/oder Chlorid, und außerdem die Kationen und Anionen der Wasch­flüssigkeit-Zusätze.The ions to be measured are, for example, the cations iron, manganese, calcium and / or aluminum, as well as the anions, e.g. Sulfate and / or chloride, and also the cations and anions of the washing liquid additives.

Zusätzlich können auch Summenparameter-Leitgrößen der die verschiedenen gelösten Ablagerungen enthalten­den Waschflüssigkeit gemessen und auch in Abhängig­keit von diesen Messungen der weitere Reinigungs­vorgang beeinflußt werden. Die Summenparameter­Leitgrößen sind im wesentlichen der pH-Wert, die Leit­fähigkeit und/oder die Redoxspannung der Wasch­flüssigkeit. Die Messung kann kontinuierlich oder diskontinuierlich durchgeführt werden. Durch die Ermittlung der jeweiligen Ionenkonzentration und insbesondere ihrer zeitlichen Veränderung kann festgestellt werden, welche Zusammensetzung die Ablagerungen aufweisen und welche Waschmittel­zusammensetzung jeweils am günstigsten ist. Nimmt beispielsweise die Konzentration einer Ionenart nur noch sehr langsam zu, obwohl die Aufnahmefähigkeit der Waschflüssigkeit für diese Ionen noch längst nicht erschöpft ist, dann bedeutet dies, daß diese Ionen bildenden Ablagerungen nur noch in vernachlässigbarem Umfang vorhanden sind. Ist dagegen kein Anstieg der Konzentration einer Ionenart mehr zu verzeichnen, weil die Aufnahmefähigkeit der Waschflüssigkeit hierfür erschöpft ist, dann müssen geeignete Maßnahmen getroffen werden, um eine weitere Aufnahme dieser Ionen in der Waschflüssigketi sicherzustellen.In addition, sum parameter parameters of the washing liquid containing the various dissolved deposits can also be measured and the further cleaning process can also be influenced as a function of these measurements. The master parameters are essentially the pH value, the conductivity and / or the redox voltage of the washing liquid. The measurement can be carried out continuously or discontinuously. By determining the respective ion concentration and in particular its change over time, it can be determined which composition the Deposits and which detergent composition is the cheapest. If, for example, the concentration of one type of ion increases only very slowly, although the absorption capacity of the washing liquid for these ions is far from exhausted, this means that these ion-forming deposits are only present to a negligible extent. If, on the other hand, there is no longer an increase in the concentration of an ion type because the absorption capacity of the washing liquid has been exhausted for this purpose, then suitable measures must be taken to ensure a further absorption of these ions in the washing liquid chain.

Demgemäß ist es vorteilhaft, die Konzentration der Ionen gelöster Ablagerungen in der Waschflüssig­keit zu verringern.Accordingly, it is advantageous to reduce the concentration of ions of dissolved deposits in the washing liquid.

Wird kein nennenswerter Anstieg der gemessenen Ionenkonzentration mehr festgestellt, obwohl die Waschflüssigkeit zur Aufnahme entsprechender Ionen noch fähig ist, dann sind die Ablagerungen im wesentlichen beseitigt und der Reinigungsvorgang kann beendet werden.If there is no longer any appreciable increase in the measured ion concentration, although the washing liquid is still capable of absorbing corresponding ions, the deposits are essentially removed and the cleaning process can be ended.

Zur Durchführung der Messung wird die Waschflüssigkeit zweckmäßig nach oben aus dem Schacht heraus- und anschließend wieder in den Schacht zurückgeführt. Dies erleichtert auch eine Abführung verbrauchter und Zuführung frischer Waschflüssigkeit, da diese Maßnahmen dann ebenfalls außerhalb des Schachtes vorgenommen werden können. Die frische Waschflüssig­keit kann durch Herabsetzung der Ionenkonzentration der gelösten Ablagerungen in der abgeführten ver­ brauchten Waschflüssigkeit gewonnen werden. Die Zusammensetzung der zugeführten frischen Wasch­flüssigkeit wird vorzugsweise durch das Ergebnis der Messung bestimmt, damit gezielt die Auf­nahmefähigkeit gerade für solche Ionen erhöht wird, die noch in erheblichem Maße in den Ab­lagerungen vorhanden sind.To carry out the measurement, the washing liquid is expediently led out of the shaft upwards and then returned to the shaft. This also facilitates the removal of used and fresh washing liquid, since these measures can then also be carried out outside the shaft. The fresh washing liquid can ver by reducing the ion concentration of the dissolved deposits in the removed needed washing liquid can be obtained. The composition of the fresh washing liquid supplied is preferably determined by the result of the measurement, so that the absorption capacity is increased specifically for ions which are still present to a considerable extent in the deposits.

Die zu lösenden Ablagerungen müssen nicht nur solche sein, die sich während des Brunnenbetriebes allmählich ansammeln, sondern es kann sich hierbei auch um sogenannte Bohrspülzusätze handeln, die bei der Brunnenherstellung eingesetzt wurden und anschließend entfernt werden müssen, da sie das Leistungsver­mögen des Brunnens beeinträchtigen.The deposits to be removed must not only be those that gradually accumulate during well operation, but can also be so-called drilling fluid additives that were used in the manufacture of the well and then have to be removed, since they impair the performance of the well.

Die Waschmittelflüssigkeit kann auch zur Desinfektion geeignete Zusätze enthalten. Hierbei dienen die durchgeführten Messungen dann jeweils auch zur Steuerung der Desinfektion sowie gegebenenfalls durch zusätzliche Messungen zum Nachweis von bio­logischen Aktivitäten.The detergent liquid can also contain additives suitable for disinfection. In this case, the measurements carried out then also serve to control the disinfection and, if appropriate, by means of additional measurements to detect biological activities.

Durch Messung der Menge der verbrauchten Wasch­flüssigkeit und der in dieser enthaltenen Ionen­konzentrationen kann auch die Gesamtmenge der herausgelösten Ablagerungen, unterteilt in die einzelnen gemessenen Ionenarten, bestimmt werden. Dies ermöglicht Rückschlüsse auf den Zustand des jeweiligen Brunnens, beispielsweise in welchen Zeitabständen eine Reinigung vorgenommen oder ob der Brunnen erneuert werden sollte.By measuring the amount of washing liquid used and the ion concentrations contained in it, the total amount of the deposited deposits, divided into the individual types of ions measured, can also be determined. This enables conclusions to be drawn about the condition of the respective well, for example at what intervals cleaning is carried out or whether the well should be replaced.

Die Erfindung wird im folgenden anhand eines in der Figur dargestellten Beispiels näher erläutert.The invention is explained below with reference to an example shown in the figure.

Diese zeigt beispielhaft die schematische Darstellung der Konzentrationsverläufe für eine beliebig gewählte Ionenart der zu lösenden Ablagerungen aus dem Brunnen in Abhängigkeit von Lösungs- und Abpumpvorgängen für ein beispielsweise abschnittsweise arbeitendes Brunnenreinigungs­verfahren. Parameter sind: Regenerierung mit Säuren, Einhaltung eines konstanten pH-Wertes.This shows, by way of example, the schematic representation of the concentration profiles for any chosen ion type of the deposits to be released from the well, depending on the solution and pumping-out processes for a well cleaning process that works, for example, in sections. Parameters are: regeneration with acids, maintaining a constant pH value.

Dabei sind im einzelnen:

  • 1. spezifische Ionen-Konzentration im Reinigungs­gerät-Arbeitsabschnitt, z.B. Eisen-Gesamt
  • 2. Zeit
  • 3. maximale Aufnahme-Kapazität der Reinigungs­flüssigkeit für die jeweils gemessene Ionen-Art
  • 4. gesteuerte Dosierung -Regeneriermittel
  • 5. gesteuerte Nach-Dosierung-Regeneriermittel
  • 6. Lösungsvorgang
  • 7. Zwischen-Abpumpen
  • 8. Abpumpen
  • 9. entfernte Menge 1. Durchgang
  • 10. entfernte Menge 2. Druchgang
  • 11. entfernte Menge vorletzter Durchgang
  • 12. entfernte Menge letzter Durchgang
  • 13. alle Ablagerungen gelöst
  • 14. Umsetzen des Reinigungsgerätes auf den nächsten Arbeitsabschnitt
  • 15. im zeitlichen Verlauf zur vollständigen Lösung der tatsächlich vorhandenen Ablagerungen eventuell notwendige Reinigungsdurchgänge am Arbeitsabschnitt.
The following are:
  • 1. specific ion concentration in the cleaning device working section, for example total iron
  • 2nd time
  • 3. Maximum absorption capacity of the cleaning liquid for the measured ion type
  • 4. Controlled dosage - regenerating agent
  • 5. Controlled post-dosing regenerant
  • 6. Solution process
  • 7. Intermediate pumping
  • 8. Drain
  • 9. Quantity removed 1st round
  • 10. Quantity removed 2nd pass
  • 11. removed quantity penultimate round
  • 12. Quantity removed last run
  • 13. All deposits removed
  • 14. Transfer of the cleaning device to the next working section
  • 15. In the course of time for the complete removal of the actually existing deposits, possibly necessary cleaning passes on the working section.

Selbstverständlich kann die Konzentration der Ionen durch kontinuierlichen Ionen-Entzug aus der Wasch­flüssigkeit das beispielhafte Zwischen-Abpumpen ersetzen. Die Figur stellt somit auch nur ein Beispiel zur Erläuterung des beanspruchten Verfahrens dar und schränkt die Anwendung des Verfahrens durch die Darstellung der Figur in keiner Weise ein. Die notwendigen Messungen können je nach Erfordernissen und Anlagengestaltung im oder außerhalb des Brunnens vorgenommen werden.Of course, the concentration of the ions can be replaced by the continuous pumping out of the sample by continuous removal of ions from the washing liquid. The figure thus represents only an example to explain the claimed method and in no way limits the application of the method by the representation of the figure. The necessary measurements can be carried out inside or outside the well, depending on the requirements and the design of the system.

Claims (9)

1. Verfahren zur Reinigung von Brunnenschächten, bei dem eine Waschflüssigkeit, bestehend aus dem Grundwasser mit geeigneten Zusätzen, aus dem Brunnenfilterrohr in an die Filterrohr­wandung angrenzende Kiesschichten gedrückt und wieder zurückgesaugt wird, wobei zu beseitigende leistungsmindernde Ablagerungen mit und in den Zusätzen lösbar sind und von der Wasch­flüssigkeit gelöst und in dieser in gelöstem Zustand aufgenommen werden,
dadurch gekennzeichnet,
daß während des Reinigungsvorganges die Ionen­konzentration verschiedener aus den Ablagerungen gelöster Ionen in der Waschflüssigkeit gemessen wird, daß die Dauer des Reinigungsvorganges in Abhängigkeit vom Ergebnis dieser Messungen gesteuert wird, und daß die Konzentration der aus den Ablagerungen gelösten Ionen in der Waschflüssigkeit in Abhängigkeit vom Ergebnis dieser Messungen für den weiteren Reinigungs­verlauf geeignet verringert wird.1.Procedure for cleaning well shafts, in which a washing liquid, consisting of the groundwater with suitable additives, is pressed out of the well filter pipe into gravel layers adjacent to the filter pipe wall and sucked back again, whereby the performance-reducing deposits to be removed can be removed with and in the additives the washing liquid is dissolved and absorbed in the dissolved state,
characterized,
that during the cleaning process the ion concentration of various ions released from the deposits in the washing liquid is measured, that the duration of the cleaning process is controlled depending on the result of these measurements, and that the concentration of the ions released from the deposits in the washing liquid depends on the result of these Measurements suitable for the further course of cleaning is reduced. 2. Verfahren nach Anspruch 1, dadurch gekenn­zeichnet, daß zusätzlich Summenparameter-­Leitgrößen der verschiedenen gelösten Ab­lagerungen und der Waschflüssigkeit gemessen werden, und daß in Abhängigkeit von diesen Messungen der weitere Reinigungsvorgang gesteuert wird.2. The method according to claim 1, characterized in that sum parameter parameters of the various dissolved deposits and the washing liquid are additionally measured, and that the further cleaning process is controlled as a function of these measurements. 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Waschflüssig­keit zur Durchführung der Messung nach oben aus dem Schacht heraus- und anschließend wieder in den Schacht zurückgeführt wird oder die Messung direkt in dem zu reinigenden Abschnitt ausgeführt wird.3. The method according to any one of claims 1 or 2, characterized in that the washing liquid for carrying out the measurement upwards out of the shaft and then returned to the shaft or the measurement is carried out directly in the section to be cleaned. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zur Verringerung der Konzentration der Ionen gelöster Ab­lagerungen ein Teil der verbrauchten Wasch­flüssigkeit durch frische Waschflüssigkeit ersetzt wird.4. The method according to any one of claims 1 to 3, characterized in that to reduce the concentration of the ions of dissolved deposits, a part of the used washing liquid is replaced by fresh washing liquid. 5. Verfahren nach Anspruch 4, dadurch gekenn­zeichnet, daß in der zu ersetzenden ver­brauchten Waschflüssigkeit die Ionenkonzen­tration der gelösten Ablagerungen herabge­setzt und diese Waschflüssigkeit dann wieder dem Reinigungsvorgang zugeführt wird.5. The method according to claim 4, characterized in that in the used washing liquid to be replaced the ion concentration of the dissolved deposits is reduced and this washing liquid is then fed back to the cleaning process. 6. Verfahren nach Anspruch 4, dadurch gekenn­zeichnet, daß die Zusammensetzung der frischen Waschflüssigkeit vom Ergebnis der Messung gesteuert wird.6. The method according to claim 4, characterized in that the composition of the fresh washing liquid is controlled by the result of the measurement. 7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die jeweilige Gesamtmenge der bei einem Reinigungsvorgang in der Waschflüssigkeit gelösten Ablagerungen ermittelt wird.7. The method according to any one of claims 1 to 6, characterized in that the respective total amount of the deposits dissolved in a washing process in the washing liquid is determined. 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Waschflüssigkeit geeignete Zusätze zur Desinfektion enthält, und daß die durchgeführten Messungen zusätzlich zur Steuerung der Desinfektion durch Messungen, die die biologischen Aktivitäten bestimmen, ergänzt werden.8. The method according to any one of claims 1 to 7, characterized in that the washing liquid contains suitable additives for disinfection, and that the measurements carried out in addition to controlling the disinfection by measurements, which determine the biological activities are supplemented. 9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Waschflüssigkeit geeignete Zusätze zur Entfernung von Bohrspül­zusätzen enthält und daß die durchgeführten Messungen durch geeignete Messungen hinsichtlich der verwendeten Zusätze zur Entfernung sowie der zu entfernenden Bohrspülzusätze ergänzt werden und die Messungen zusätzlich zur Steuerung der Entfernung und zur mengenmäßigen Bestimmung der Bohrspülzusätze verwendet werden.9. The method according to any one of claims 1 to 8, characterized in that the washing liquid contains suitable additives for the removal of drilling fluid additives and that the measurements carried out are supplemented by suitable measurements with regard to the additives used for removal and the drilling fluid additives to be removed and the measurements in addition to Control of the distance and for the quantitative determination of drilling fluid additives can be used.
EP89250124A 1988-12-30 1989-12-20 Method of cleaning well shafts Expired - Lifetime EP0376422B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3844499A DE3844499C1 (en) 1988-12-30 1988-12-30
DE3844499 1988-12-30

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EP0376422A2 true EP0376422A2 (en) 1990-07-04
EP0376422A3 EP0376422A3 (en) 1991-10-30
EP0376422B1 EP0376422B1 (en) 1995-03-01

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EP89250124A Expired - Lifetime EP0376422B1 (en) 1988-12-30 1989-12-20 Method of cleaning well shafts

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EP (1) EP0376422B1 (en)
AT (1) ATE119236T1 (en)
DD (1) DD292286A5 (en)
DE (2) DE3844499C1 (en)
ES (1) ES2071650T3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940107C2 (en) * 1989-12-05 1999-03-18 Bauer Reinhold Device for cleaning the filter gravel fill in water wells
DE4133531C2 (en) * 1991-10-10 1994-09-15 Aquaplus Brunnensanierung Kaet Combined mechanical / chemical well regeneration method and device for carrying out the same
SE9201843L (en) * 1992-06-16 1993-12-17 In Terra Aqua Fresh water storage facility
DE10224677B4 (en) * 2002-06-03 2005-06-16 Aquaplus - Brunnensanierung H. Munding Gmbh & Co. Kg Method for combined mechanical / chemical well regeneration
DE102005027405A1 (en) * 2005-06-13 2006-12-14 Aqua Brunnen Service Regenerierungstechnik Gmbh Process and assembly to clean sub-surface pipes by pumping cleaning agents in solution through radial discharge outlets
DE102008055623B4 (en) * 2008-11-03 2012-04-26 Peter Nillert Apparatus and method for activating or cleaning wells
DE102009018383B4 (en) 2009-04-26 2011-04-07 Nillert, Peter, Dr. Ing. Device for activating or cleaning filter tube wells
DE102014007812A1 (en) 2014-06-02 2015-12-03 Teftorec Gmbh Device for activating or cleaning wells
DE102015002476A1 (en) 2015-02-26 2016-09-01 Teftorec Gmbh Apparatus and method for activating or cleaning wells

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3547194A (en) * 1968-12-06 1970-12-15 Maher D L Co Method of cleaning gravel packed,gravel developed,and drilled igneous wells
US4392529A (en) * 1981-11-03 1983-07-12 Burwell Maurel R Method of cleaning a well and apparatus thereof
EP0103779A2 (en) * 1982-09-20 1984-03-28 John E. Oliver Removing contaminates from a well fluid and well system
DE3303802A1 (en) * 1983-02-04 1984-08-16 Deutsche Nalco Chemie GmbH, 6000 Frankfurt Process for cleaning and conditioning water storage and water distribution systems and a cleaner for water wells
DE3504752A1 (en) * 1985-02-08 1986-08-14 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Process for cleaning well shafts and bore wells
EP0282231A2 (en) * 1987-03-09 1988-09-14 Services Petroliers Schlumberger Monitoring drilling mud

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DE3025275A1 (en) * 1980-07-03 1982-01-28 Siemens AG, 1000 Berlin und 8000 München METHOD FOR MONITORING PURE WATER FOR FOREIGN DION CONTENT USING A CONDUCTIVITY MEASUREMENT
DE3445316A1 (en) * 1984-12-07 1986-06-19 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Apparatus for cleaning well shafts

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US3547194A (en) * 1968-12-06 1970-12-15 Maher D L Co Method of cleaning gravel packed,gravel developed,and drilled igneous wells
US4392529A (en) * 1981-11-03 1983-07-12 Burwell Maurel R Method of cleaning a well and apparatus thereof
EP0103779A2 (en) * 1982-09-20 1984-03-28 John E. Oliver Removing contaminates from a well fluid and well system
DE3303802A1 (en) * 1983-02-04 1984-08-16 Deutsche Nalco Chemie GmbH, 6000 Frankfurt Process for cleaning and conditioning water storage and water distribution systems and a cleaner for water wells
DE3504752A1 (en) * 1985-02-08 1986-08-14 Charlottenburger Motoren- und Gerätebau KG H.W. Paul, 1000 Berlin Process for cleaning well shafts and bore wells
EP0282231A2 (en) * 1987-03-09 1988-09-14 Services Petroliers Schlumberger Monitoring drilling mud

Also Published As

Publication number Publication date
DE58909063D1 (en) 1995-04-06
EP0376422B1 (en) 1995-03-01
DE3844499C1 (en) 1990-07-05
ES2071650T3 (en) 1995-07-01
EP0376422A3 (en) 1991-10-30
ATE119236T1 (en) 1995-03-15
DD292286A5 (en) 1991-07-25

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