EP0620356A2 - Méthode et dispositif pour le nettoyage des tubes filtres dans un puit - Google Patents

Méthode et dispositif pour le nettoyage des tubes filtres dans un puit Download PDF

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Publication number
EP0620356A2
EP0620356A2 EP94105279A EP94105279A EP0620356A2 EP 0620356 A2 EP0620356 A2 EP 0620356A2 EP 94105279 A EP94105279 A EP 94105279A EP 94105279 A EP94105279 A EP 94105279A EP 0620356 A2 EP0620356 A2 EP 0620356A2
Authority
EP
European Patent Office
Prior art keywords
explosion
hydrogen
gas mixture
filter
cone
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.)
Withdrawn
Application number
EP94105279A
Other languages
German (de)
English (en)
Other versions
EP0620356A3 (fr
Inventor
Anatoly Dr. Gurinovitsch
Dmitrie Dr. Kozlov
Wladimir Dr. Ivaschetschkin
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.)
DML DIESELMOTORENWERK LEIPZIG GmbH
Original Assignee
DML DIESELMOTORENWERK LEIPZIG GmbH
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 DML DIESELMOTORENWERK LEIPZIG GmbH filed Critical DML DIESELMOTORENWERK LEIPZIG GmbH
Publication of EP0620356A2 publication Critical patent/EP0620356A2/fr
Publication of EP0620356A3 publication Critical patent/EP0620356A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E21B37/02—Scrapers specially adapted therefor
    • 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 method and a device for cleaning borehole filters in liquid extraction bores.
  • the object of the invention is to avoid the disadvantages of the known methods and devices, to reduce the outlay in terms of process and device technology and to increase the effectiveness.
  • the object is achieved in that pressure pulses are triggered in the cavity of the borehole filter by ignition and explosion of a hydrogen-oxygen-gas mixture using the known combustion and detonation methods.
  • the hydrogen-oxygen-gas mixture is obtained by electrolysis in the section of the filter to be treated immediately before the explosion. This fulfills safety requirements and simplifies the process-specific equipment.
  • atomized water is sprayed into the explosion products at the time of their collapse. Explosion products of the hydrogen-oxygen mixture are superheated water vapors, which partially cool down as they expand and then flood under the effect of the hydrostatic pressure and cause a series of pulsations until they have completely cooled and condensed.
  • the explosion zone of the hydrogen-oxygen-gas mixture is delimited from above and below by rubber sleeves and combined with mechanical cleaning.
  • the pressure is p g ⁇ 2 MPa
  • the pressure is p g ⁇ 3 MPa, etc.
  • the combustion can be used to regenerate borehole filters that are clogged by loose, collating deposits that are low in strength.
  • 4.4 kJ of energy are released during the detonation of 1dm3 of the mixture 2H2 + 2O2 (under normal conditions).
  • the detonation creates a pressure wave that is broken in the water and can reach the filter.
  • the pressure wave is very short and transfers a small part of the explosion energy.
  • the main part of the total energy of the explosion is the kinetic energy of the liquid, which destroys the accumulating deposits and sweeps them away.
  • the detonation can be used for work in boreholes that are clogged by solid conglomerate-shaped deposits.
  • the device for cleaning borehole filters consists of a cylindrical dielectric housing, in the upper part of which there is an explosion chamber. At the upper end of this housing, a cylinder with the same longitudinal axis but a smaller diameter is firmly connected to the housing. In this part of the device an ignition device is attached which is preferably a spark plug.
  • the supply of the reagent opens into the upper horizontal wall of the explosion chamber.
  • the lower boundary of the explosion chamber is formed by a conical reflector, the cone tip pointing upwards. Outlet slots are made in the outer wall of the device at the level of the reflector.
  • the gas generator of the device is located below the reflector. The gas generator is connected to the explosion chamber by an additional chamber.
  • the explosion mixture generated in the gas generator enters this chamber through a safety valve.
  • a cone rigidly attached to the reflector is connected to another movable cone by means of a bellows located under the cone. This cone has additional water intake nozzles.
  • a dielectric center rod is located in the center of the gas generator. Attached to this central rod are elliptical electrodes which are inclined in a ring shape and which are encased in the device housing. Narrow bushings are arranged between this jacket and the electrodes.
  • Above and below the explosion chamber there are rubber sleeves on the outer wall of the housing, at the lower end of the outer wall of the housing there are brushes around the diameter. The lower end of the housing is closed by a base plate in which an outlet opening is made.
  • Fig. 1 shows the device according to the invention in the borehole
  • Fig. 2 shows the device according to the invention in section.
  • the lifting device 4 Fig. 1
  • the device for cleaning borehole filters 1 is lowered over the guide roller 5 on the cable into the area of the filter to be processed in such a way that the device already makes several up and down movements along the entire filter surface, thereby a partial mechanical cleaning of the inner filter surface is achieved by the brushes 32 (FIG. 2).
  • a direct voltage is passed via lines 34 and 35 to the electrodes 27 of the device.
  • the reagent passes through the hose 33 into the explosion chamber 8 and partly spreads through the outlet slots 9 into the zone near the filter.
  • the electrolysis begins.
  • the decay products carbon and hydrogen which arise between the electrodes 27 pass through the passage 28 between the electrodes 27 and the cylindrical jacket 29 to the overflow valve 17.
  • this valve opens and the gas mixture passes through the chamber 16 into the explosion chamber 8. After reaching a certain one Volume of gas in the explosion chamber 8, the gas mixture is brought to explosion by means of the ignition devices 11 and 12.
  • the resulting pressure wave is reflected by the reflector 7 and directed to the filter.
  • the flowing liquid acts on the movable cone 20 and moves it downwards.
  • the bellows 19 held by the immobile cone 18 is pulled apart.
  • An additional amount of water is drawn through the nozzles 21.
  • the movable cone 20 moves upward and compresses the bellows 19.
  • the bellows 19 acts on the liquid in it in such a way that they are expelled in a finely atomized form through the nozzles 21 into the explosion products.
  • the occurrence of water dust in the explosion products accelerates their condensation and ensures the enlargement of the second pressure peak and the vacuum when collapsing. Since the reagent was in the filter cavity prior to ignition, the colmantant is exposed to an impulse-reagent effect. After each new pulse, the device for cleaning borehole filters is advanced to a new treatment interval.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP94105279A 1993-04-14 1994-04-05 Méthode et dispositif pour le nettoyage des tubes filtres dans un puit. Withdrawn EP0620356A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934311843 DE4311843A1 (de) 1993-04-14 1993-04-14 Verfahren und Vorrichtung zur Reinigung von Bohrlochfiltern in Flüssigkeitsentnahmebohrungen
DE4311843 1993-04-14

Publications (2)

Publication Number Publication Date
EP0620356A2 true EP0620356A2 (fr) 1994-10-19
EP0620356A3 EP0620356A3 (fr) 1995-07-19

Family

ID=6485234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105279A Withdrawn EP0620356A3 (fr) 1993-04-14 1994-04-05 Méthode et dispositif pour le nettoyage des tubes filtres dans un puit.

Country Status (2)

Country Link
EP (1) EP0620356A3 (fr)
DE (1) DE4311843A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836394A (en) * 1996-07-07 1998-11-17 Blank; Karl-Heinz Well regeneration apparatus
CN1055147C (zh) * 1997-12-19 2000-08-02 汤井林 采油油井油层孔道裂缝清洗装置及处理方法
CN103946477A (zh) * 2011-11-30 2014-07-23 韦尔泰克有限公司 用于处理套管的内表面的清洁工具和方法
CN109138920A (zh) * 2018-11-13 2019-01-04 盐城德正机械有限公司 一种环保节能型清蜡石油机械
EA036590B1 (ru) * 2018-12-28 2020-11-26 Белорусский Национальный Технический Университет Устройство для регенерации фильтров водозаборных скважин
CN114000851A (zh) * 2021-12-30 2022-02-01 山东泉益环保科技有限公司 一种抽油井无污染高温氮气清洗作业装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999180B (zh) * 2018-08-13 2020-11-13 北京理工北阳爆破工程技术有限责任公司 一种陆域形成中软土地基整体推进清淤方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732016A (en) * 1956-01-24 macleod
US4392529A (en) * 1981-11-03 1983-07-12 Burwell Maurel R Method of cleaning a well and apparatus thereof
EP0450170A2 (fr) * 1990-04-06 1991-10-09 R. Späne Gmbh Chem. Techn Produkte Dispositif de régénération de puits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732016A (en) * 1956-01-24 macleod
US4392529A (en) * 1981-11-03 1983-07-12 Burwell Maurel R Method of cleaning a well and apparatus thereof
EP0450170A2 (fr) * 1990-04-06 1991-10-09 R. Späne Gmbh Chem. Techn Produkte Dispositif de régénération de puits

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836394A (en) * 1996-07-07 1998-11-17 Blank; Karl-Heinz Well regeneration apparatus
CN1055147C (zh) * 1997-12-19 2000-08-02 汤井林 采油油井油层孔道裂缝清洗装置及处理方法
CN103946477A (zh) * 2011-11-30 2014-07-23 韦尔泰克有限公司 用于处理套管的内表面的清洁工具和方法
CN109138920A (zh) * 2018-11-13 2019-01-04 盐城德正机械有限公司 一种环保节能型清蜡石油机械
EA036590B1 (ru) * 2018-12-28 2020-11-26 Белорусский Национальный Технический Университет Устройство для регенерации фильтров водозаборных скважин
CN114000851A (zh) * 2021-12-30 2022-02-01 山东泉益环保科技有限公司 一种抽油井无污染高温氮气清洗作业装置
CN114000851B (zh) * 2021-12-30 2022-04-08 山东泉益环保科技有限公司 一种抽油井无污染高温氮气清洗作业装置

Also Published As

Publication number Publication date
DE4311843A1 (de) 1994-10-20
EP0620356A3 (fr) 1995-07-19

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