SU848600A1

SU848600A1 - Device for working filters inside wells

Info

Publication number: SU848600A1
Application number: SU792754922A
Authority: SU
Inventors: Владимир Александрович Романенко
Original assignee: Ленинградский Ордена Трудового Крас-Ного Знамени Инженерно-Строитель-Ный Институт
Priority date: 1979-04-17
Filing date: 1979-04-17
Publication date: 1981-07-23

Description

Изобретение относится к эксплуатации скважин на воду и предназначено для восстановления их производительности путем очистки фильтров и призабойной области от кольмагирующих осадков, препятствующих притоку воды в скважины .The invention relates to the operation of wells for water and is intended to restore their productivity by cleaning filters and bottom-hole area from colmagic sediments that impede the flow of water into the wells.

Известно устройство для обработки фильтра, содержащее крышку, патрубки для заливки реа генга [1}A device for processing a filter containing a lid, nozzles for filling the reengine [1}

Недостаток этого устройства в том, что не обеспечивается механического разрушения и диспергирования осадков.The disadvantage of this device is that it does not provide mechanical destruction and dispersion of sediments.

Наиболее близким к предлагаемому является устройство для обработки фильтров;; в скважине, включающее взрывную камеру, источник взрывчатой смеси, запальник, крышку и закрепленный в ней патрубок[2J.Closest to the proposed is a device for processing filters ;; in the well, including an explosive chamber, an explosive mixture source, an ignitor, a cap and a pipe fixed therein [2J.

Однако в указанном устройстве в открытую снизу камеру поступает не Только взрывчатый газ, но и газы которые образуются при контакте реагентов с кольматентами, что нарушает необходимое соотношение объемов газов, t обеспечивающих взрыв газовой смеси. ‘ При таких условиях, как показали опытные исследования, взрыва не происходит.However, in the specified device, not only explosive gas enters the chamber open from below, but also gases that are formed when reactants come in contact with colmatants, which violates the necessary ratio of the volumes of gases t providing the explosion of the gas mixture. ‘Under such conditions, as experimental studies have shown, an explosion does not occur.

Кроме того, смесь воды с реагентом в скважине сообщается атмосферой и уровень жидкости находится только лишь под атмосферным давлением, а между взрывной камерой и фильтром имеется зазор. Поэтому при взрыве газовой смеси под действием динамических нагрузок жидкость с реагентом не вытесняется в прифильтровую область, имеющую значительное гидравлическое сопротивление, а выталкивается в скважину, где гидравлические сопротивления минимальные. Внешне это проявляется в колебаниях уровня жидкости в скважине.In addition, the mixture of water with the reagent in the well is communicated by the atmosphere and the liquid level is only at atmospheric pressure, and there is a gap between the blast chamber and the filter. Therefore, in the explosion of the gas mixture under the action of dynamic loads, the liquid with the reagent is not displaced into the filter region, which has significant hydraulic resistance, but is pushed into the well, where the hydraulic resistance is minimal. Outwardly, this is manifested in fluctuations in the liquid level in the well.

Целы; изобретения — повышение надежности работы устройства.Goals; invention - improving the reliability of the device.

Поставленная цель достигается тем, что взрывная камера выполнена герметизированной из легкоразрушаемого материала, а запальник установлен в · 848000 верхней части патрубка, причем источ- от источника 8 ник взрывчатой смеси сообщен с па— объема газовой трубком,‘а крышка выполнена в виде благодаря чему зажигания до основного смеси в камере 11, взрыв газовой смеси герметизирующего устье скважины фланца.This goal is achieved by the fact that the explosive chamber is sealed from readily destructible material, and the igniter is installed in 848000 of the upper part of the nozzle, and the source of explosive mixture from source 8 is connected with the gas pipe by volume, and the cover is made in the form of which to the main mixture in the chamber 11, the explosion of the gas mixture of the sealing wellhead of the well of the flange.

На чертеже схематически изображено предлагаемое устройство для обработки фильтров.The drawing schematically shows the proposed device for processing filters.

К обсадной трубе скважины 1, оборудованной фильтром 2, приварен фланец 3 с отверстиями для болтов. Через крышку 4 проходит патрубок 5, на внутренней боковой поверхности которого установлена проволочная спираль 6, а в верхней части внутри₍,₍замкнутой каме- 15 ры 7 - запальник 8, выполненный в виде накаливающей спирали, соединенной с источником тока (на чертеже не показан). К патрубку 6 примыкает патрубок 9, снабженный вентилем 10 и соединенный с баллонами с окислительным и горючим газами (на чертеже не показаны) .На нижнем конце патрубка 5 насажена камера 11, выполненная из газонепроницаемого малопрочного материала, например, полиэтиленовой пленки.A flange 3 with bolt holes is welded to the casing of a well 1 equipped with a filter 2. A nozzle 5 passes through the cover 4, on the inner side surface of which a wire spiral 6 is installed, and in the upper part inside ₍ , ₍ closed chamber 15 - igniter 8, made in the form of an incandescent spiral connected to a current source (not shown ). A pipe 9 adjacent to the pipe 6 is provided with a valve 10 and connected to cylinders with oxidizing and combustible gases (not shown in the drawing). At the lower end of the pipe 5, a chamber 11 is made, made of a gas-tight low-strength material, for example, polyethylene film ki.

Через крышку 4 также проходит заливочная труба 12, снабженная вентилем 13. К этой трубе примыкает газоотводная трубка 14 с вентилем 15.A filler pipe 12 provided with a valve 13 also passes through the cover 4. A gas pipe 14 with a valve 15 is adjacent to this pipe.

Обработка, фильтров скважин производится следующим образом.Processing, well filters is as follows.

Крышку 4 ‘ прикрепляют болтами к фланцу 3, после чего производят заливку скважины раствором реагента через патрубок при открытом вентиле 13 и закрытых вентилях 10 и 15. В зависимости от состава кольматантов в качестве реагентов используют соляную кислоту , полифосфаты или смеси различных реагентов.The cap 4 ‘is bolted to the flange 3, after which the well is filled with the reagent solution through the pipe with the valve 13 open and valves 10 and 15 closed. Depending on the composition of the colmatants, hydrochloric acid, polyphosphates or mixtures of various reagents are used.

После заливки скважины раствором реагента закрывают вентиль 13 и открывают вентиль 15 на газоотводной трубке 14 для выпуска продуктов реакции реаген-⁴⁵та с кольматантами. Одновременно открывают вентиль 10, й в камеру 11 подается под давлением взрывчатая смесь. Последняя состоит из горючего газа (водорода, ацетилена, метана и других) и ⁵⁰ окислительного газа (кислорода или воздуха). После заполнения газовой смесью, камеры 11 вентиль 10 закрывают и на спираль 8 подают электрический ток. Спираль 8 накаляется и инициирует взрыв. ⁵⁵газовой смеси с разрушением камеры 11« Проволочная спираль 6 способствует турбулизации фронта пламени в патрубке 5 происходит в виде детонации.After filling the well with the reagent solution, close the valve 13 and open the valve 15 on the gas outlet pipe 14 to release the reaction products of the reagent ⁴⁵ with colmatants. At the same time, the valve 10 is opened, the explosive mixture is pressurized into the chamber 11. The latter consists of combustible gas (hydrogen, acetylene, methane and others) and ⁵⁰ oxidizing gas (oxygen or air). After filling with the gas mixture, the chamber 11 of the valve 10 is closed and an electric current is supplied to the spiral 8. Spiral 8 glows and initiates an explosion. ^{55 of the} gas mixture with the destruction of the chamber 11 "Wire spiral 6 contributes to the turbulence of the flame front in the pipe 5 occurs in the form of detonation.

При взрыве газовой смеси образуется ударная волна, которая воздействует на поверхность жидкости в скважине и передается на фильтр 2 и прифильтровую область. Под действием этого импульса ₁₀ сжатия с давлением в несколько мегапаскалей происходит механическое разрушение и диспергирование осадков, кольматирующих фильтр и прйфильтровую область. Благодаря этому интенсифицируется процесс растворения отложений реагентами. Одновременно расширяющиеся продукты взрыва газовой смеси действуют· на поверхность жидкости в скважине и вытесняют реагент за 20 контур фильтра, благодаря чему обеспечивается растворение осадков находящихся на расстоянии 1,0-1,5 м от фильтра. После взрыва в замкнутой камере над поверхностью жидкости в фильтре 25 образуется вакуум и раствор реагента частично возвращается в скважину, смешиваясь с реагентом, не вошедшим в реакцию с кольматантом...During the explosion of the gas mixture, a shock wave is formed, which acts on the surface of the liquid in the well and is transmitted to the filter 2 and the filter region. Under the action of this compression pulse ₁₀ with a pressure of several megapascals, mechanical destruction and dispersion of sediments occurring that clog the filter and the pre-filter region occurs. Due to this, the process of sediment dissolution by reagents is intensified. At the same time, the expanding products of the explosion of the gas mixture act on the surface of the liquid in the well and displace the reagent for the 20 filter loop, which ensures the dissolution of sediments located at a distance of 1.0-1.5 m from the filter. After an explosion in a closed chamber above the surface of the liquid, a vacuum is formed in the filter 25 and the reagent solution partially returns to the well, mixing with the reagent that has not entered into the reaction with the colmatant ...

После проведения первого цикла об30 работки фильтров предлагаемым способом крышку 4 снимают, на патрубок 5 насаживают новую камеру 11 и в указанной выше последовательности производят следующий взрыв газовой смеси. 35 Количество взрывов газовой смеси опре— деляют опытным путем.After the first cycle of processing the filters with the proposed method, the cover 4 is removed, a new chamber 11 is mounted on the pipe 5 and, in the above sequence, the next explosion of the gas mixture is performed. 35 The number of explosions of a gas mixture is determined empirically.

Таким образом, предлагаемый способ реагентной обработки фильтров скважин обеспечивает разрушение и диспергирование кольматирующих фильтр и прифильтровую область отложений, задавливание реагента за контур фильтра и растворение кольматантов. Испытания показали, что при использовании предлагаемого устройства удельный дебит скважины увеличивается в 2,5-3,0 раза по сравнению с первоначальным.Thus, the proposed method for the reagent treatment of well filters provides for the destruction and dispersion of the clogging filter and the filter region of the deposits, crushing the reagent behind the filter circuit and dissolving the mud. Tests have shown that when using the proposed device, the specific production rate of the well increases 2.5-3.0 times compared to the original.

Claims

(54) FILTER TREATMENT DEVICE The invention relates to the operation of wells for water and is intended to restore infrared power by cleaning the filters and the bottom area from clogging holes that prevent the inflow of water into the wells. A device for filter processing is known, which contains a cap, a pipe OLE of filling the reagent pi. The device’s core is that no mechanical destruction and dispersion of sediments is provided. The closest to the present invention is a device for filter processing ;, in a well, including an explosive chamber, a source of explosive mixture, a pilot light, a cover and a 2J branch pipe fixed in it. However, in this device, not a tonbKo explosive gas enters the bottom open chamber, but also gases which are formed when the reagents come into contact with the clogging agents, which disrupts the necessary volume ratio of gases that provide an explosion of the gas mixture in WELL. Under such conditions, as shown by experimental studies, an explosion does not occur. In addition, the mixture of water with the reagent in the well is communicated by the atmosphere and the fluid level is only at atmospheric pressure, and there is a gap between the blast chamber and the filter. Therefore, when a gas mixture explodes under the action of dynamic loads, the fluid with the reagent is not forced out into the filtering area, which has a significant hydraulic resistance, but is pushed out into the well, where the hydraulic resistances are minimal. Externally, this is manifested in fluctuations in the level of fluid in the well. The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that the sparking chamber is made of pressurized material that is easily destructible, and the pilot is installed in the upper part of the nozzle, the explosion pin of the mixture communicating with the nozzle, and the cover is made in the vice of the wellhead sealing flange. The figure shows schematically the proposed filter processing unit. The casing pipe of the well 1, equipped with the filter 2, is welded with a flange 3 with holes for the bolts. A cap 5 passes through the cover 4, on the inner side surface of which a wire helix 6 is installed, and in the upper part of the inside-closed chamber 7 there is a pilot light 3, made in the form of a glowing helix connected to the current source (not shown) 6 adjoins a pipe 9, equipped with a valve 1O and connected to cylinders with oxidizing and combustible gases (not shown). At the lower end of the pipe 5, chambers 11 are mounted, made of a gas-tight low-strength material, for example, polyethylene film. The cover 4 also passes a filling pipe 12 fitted with a valve 1 An exhaust pipe 14 with a valve 15 adjoins this pipe. Processing the well filters is done in the following way. The cover 4 is bolted to the flange 3 and then filled with a solution of the reagent through the nozzle with open valve 13 and closed valves 1O and 15. Depending on the composition of the mud, hydrochloric acid, polyphosphates or mixtures of different reagents are used as reagents. After the well has been filled, the valve 13 is closed with the reagent solution and the valve 15 is opened in the venting tube 14 to discharge the reagent's reaction products with the colmatants. At the same time, the digrats wag valve 10, and a mixture of explosives is fed into the chamber 11 under pressure. The latter consists of combustible gas (fuel, acetylene, methane, and others) and oxidation gas (oxygen or air). After filling the gas mixture of chamber 11, valve 10 is closed and electric current is supplied to coil 8. Spiral 8 firing initiates an explosion. gas mixture with the destruction of the chamber 11 A propelled coil 6 contributes to the turbulization of the flame front in the nozzle 5–4 from the source 8 aaji to the main volume of the gas mixture in chamber 11, which causes the explosion of the gas mixture in the form of detonation. When a gas mixture explodes, a shock wave forms, which affects the surface of the fluid in the well and transfers to filter 2 and filtering. Under the action of this impulse to press down with a pressure of several megapascals, mechanical destruction and dispersion of sediments occur, clogging up and filter areas. Due to this, the process of sediment dissolution by reagents is intensive. Simultaneously, the expanding products of an explosion of a gas mixture act on the surface of the fluid in the well and force the reagent out of the filter circuit, thereby allowing the sediment to dissolve at a distance of 1 to about 1.5 m from the filter. After the explosion, a vacuum is formed in the closed chamber over the surface of the liquid in the filter and the reagent solution is partially returned to the well, mixing with the reagent that did not react with the clogging agent ... After the first treatment cycle of the filters is performed using the proposed method, the cover 4 is removed A new chamber 11 and, in the sequence indicated above, produces the next explosion of the gas mixture. The number of explosions, the gas mixture is determined by experimental means. Thus, the proposed method of reagent treatment of wells in wells provides for the destruction and dispersion of sediments coagulating the filter and under the filter area, setting the reagent behind the filter circuit and dissolving the colmatants. Tests have shown that when using the proposed device, the specific flow rate of the well is increased by 2.5-3, O times compared with the original. A device for treating filters in a well, including an explosive chamber, a source of explosive mixture, a pilot light, a cover and a nozzle fixed therein, which has been made in such a way that, in order to increase reliability, the explosive chamber is made g-erme.tizi