Wyniki wyszukiwania - BazTech

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Diagnostyka nieeksploatowanych studni w aspekcie włączenia ich do eksploatacji

Górka T., Styrkowiec E., Macuda J.

Technologia Wody

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2018

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Nr 4 (60)

30--34

PL

Dynamiczny rozwój miast oraz zwiększenie zapotrzebowania na wodę skłaniają przedsiębiorców do poszukiwania dodatkowych źródeł zaopatrzenia w wodę, a także zapewnienia rezerwowych ujęć wód. Niejednokrotnie działania inwestycyjne zwracają się ku studniom, których w przeszłości nie włączono do eksploatacji lub eksploatacja została zaniechana. Należy jednak zwrócić uwagę, że mimo braku poboru wody w długim okresie czasu, w nieużytkowanych studniach zachodzi wiele procesów naturalnych, które wpływają negatywnie na ich konstrukcję oraz sprawność hydrauliczną (procesy starzenia). Dynamika tych zjawisk jest bezpośrednio związana z lokalnymi warunkami hydrogeochemicznymi warstwy wodonośnej, jakością zastosowanych materiałów konstrukcyjnych, jak również z wiekiem studni. Dla oceny racjonalności włączenia (lub przywrócenia) do eksploatacji nieużytkowanych studni konieczne jest wykonanie w nich pełnej diagnostyki stanu technicznego, a przede wszystkim profilowań geofizycznych otworu, inspekcji TV oraz pompowań pomiarowych. Badania te obrazują m.in. aktualny stan konstrukcji studni, wydajność eksploatacyjną, jakość wody, czy też umożliwiają opracowanie zaleceń dotyczących dalszej eksploatacji. Wyniki badań pozwalają zakwalifikować studnię do włączenia do eksploatacji, rekonstrukcji lub do likwidacji. Ponadto stanowią wiarygodną podstawę do analizy ekonomicznej przedsięwzięcia, zwłaszcza w zakresie poniesienia dodatkowych kosztów związanych z uruchomieniem studni.

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Studnie w dobrym stanie

Styrkowiec E.

Kierunek Wod-Kan

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2018

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Nr 4

42--45

PL

Podstawą ekonomicznego zarządzania przedsiębiorstwem wodociągowym jest zapewnienie wieloletniej i bezawaryjnej pracy każdego z elementów infrastruktury, a zwłaszcza źródła zaopatrzenia w wodę, czyli studni.

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Impact of wells reconstruction on their operational parameters

Macuda J., Styrkowiec E., Rajpold W.

AGH Drilling, Oil, Gas

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2018

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Vol. 35, no. 1

335--342

EN

Use of deep water-bearing horizons on an industrial scale is an expensive undertaking, mainly in the first phase of the project which is the well construction stage. Also, emergencies occur during the well operation, with the most frequent including yield reduction caused by the poor technical condition of the well. These 17 frequently lead to the total decommissioning of the well, caused, for example, by backfill, filter damage or casing pipe damage. After conducting the proper diagnostics, a decision is most often made in such cases to reconstruct a well, and much less seldom to drill a new well hole. Reconstruction of water intake wells usually encompasses replacement of the entire filter column with the well filter damaged as a result of ageing. As new technologies and materials become available on the market, it is possible to use new generation filters in the well construction, with better technical parameters (in terms of strength, hydraulics and corrosion resistance). In many cases, it allows for maintaining or achieving similar operational parameters in the reconstructed well. The determination of resources for a reconstructed well should, however, take into account modified filtration conditions in the aquifer’s zone adjacent to the filter because of the zone siltation during previous use of the well. The paper includes an evaluation of the impact of the reconstruction of two wells extracting water from the Lower Cretaceous level on improvement of their yields.

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Stan chemiczny wód podziemnych aglomeracji łódzkiej

Małecki J. J., Porowska D., Styrkowiec E., Ziułkiewicz M.

Przegląd Geologiczny

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2017

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Vol. 65, nr 11/2

1329--1333

EN

The article identifies the hydrogeochemical environments controlling the chemical composition of groundwater in the Lódź agglomeration. The study was conducted with a different position of the groundwater table within: the Quaternary, Upper- and Lower Cretaceous aquifers. These aquifers are continuously exploited from a long time till present. The papers focuses on geogenic factors resulting from geological construction, lithology, circulation in the Lódź basin and anthropogenic factors associated with the change of the circulation system and the potential migration of pollution from the surface. The chemical composition of water from the Quaternary, Upper- and Lower Cretaceous aquifers was stable, without any anthropogenic changes. The hydrochemical inversion of water within the Cretaceous aquifers is the result of the different lithology of these aquifers and the variation in the way and magnitude of groundwater recharge.

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The influence of borehole design on the production and efficiency parameters of wells intaking Quaternary waters in the south of Łódź

Macuda J., Styrkowiec E.

AGH Drilling, Oil, Gas

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2017

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Vol. 34, no. 4

895--906

EN

Quaternary wellbores are very liable to rapid drops of hydraulic efficiency mainly caused by clogging processes and the corrosion of the wellbore structure. The presence of such processes and their intensity largely depend on the hydrogeochemical conditions of the intaken aquifer and also the production rate and extraction method of a given wellbore. Among the major factors slowing down the hydraulic intensity are a correctly designed well, especially the properly selected type and design of the filter. A well designed wellbore filter should have low hydraulic resistance of the inflowing water and be resistant to clogging and corrosion in the given hydrochemical conditions. This allows for long and failure-free extraction of large high-production wells. The results of analyses of the effect of intake wellbore design on its hydraulic efficiency are presented in the paper. The intake wells producing Quaternary waters for waterworks in the southern part of Łódź were analyzed.

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Many years’ extraction of groundwater in the context of established usable groundwater reserves

Macuda J., Styrkowiec E.

AGH Drilling, Oil, Gas

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2017

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Vol. 34, no. 2

419--427

EN

The operation of water supply networks basically relies on the ability of supply water, which in the case of groundwater intakes, is defined by usable reserves offered by the wells involved. Their establishing is the last stage of an investment, i.e. building of groundwater intakes, and their value determines the type of infrastructure and technological hardware in the wells. Owing to the fact that the usable groundwater reserves are conditioned by a number of factors (economic, technological, environmental) their correct determining depends on the correct definition of the number and quality of measurements and hydrogeological observations. In practice, these measurements tend to be shortened to minimum (test pumping) or discarded (diagnostics of well construction) for financial reasons. As a result the user obtains either over- or underestimated information about the intake parameters. Exploitation of a well with overestimated capacity brings about serious technological and economic consequences, starting from the lowered productivity (drop of water table, lower yield), change of chemical composition of water, sanding up of the well as well as well failures and damage. The use of a well with underrated output does not shorten the life of the well, though is disadvantageous for the economic reasons. The productivity of wells can be verified after a few years of controlled extraction, on the basis of which the cost of water extraction, stability of chemical composition or impact on other intakes in given work conditions. Accordingly, this is a basis for updating usable groundwater reserves of the wells. Moreover, after many years of observation of groundwater intakes, one can formulate recommendations warrantying long life of wells, rational management of pump aggregates and well renovation plans.

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The technical and technological aspects of commissioning a new intake wells

Macuda J., Styrkowiec E.

AGH Drilling, Oil, Gas

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2016

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Vol. 33, no. 3

641--649

EN

Correctly performed intake wells are a warranty of long and efficient exploitation of the object. A number of important factors are involved, starting from the correct technology of drilling to proper supervision of the investor and control of realization of particular stages of work. These factors are typical of each stage of the investment process, from the stage of determining project requirements, quality of drilling to commissioning of the well. For this reason it is extremely important for the investor to establish the requirements and technical criteria which will be presented to the authors of the geological project and potential performer of the well. Geological works can be successfully verified with available diagnostic techniques, thanks to which the quality of performance can be recognized, make the contractor remove construction failures and improve the efficiency of hydraulic well before final commissioning. The necessity of performing such an analyses should be included in the budget of the planned well.Properly defined technical condition of the drilled well and evaluation of its hydraulic efficiency, being a basis for commissioning, allows the designers to select rational parameters of production and elongate a well’s life.

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Badania diagnostyczne wnętrza studni wierconych za pomocą inspekcji telewizyjnej na przykładzie doświadczeń z Łodzi i okolic

Piąstka W., Styrkowiec E.

Przegląd Geologiczny

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2015

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Vol. 63, nr 10/2

992--996

EN

Maintaining the proper technical condition of drilled wells is essential to the rational utilisation of underground water supplies both from the environmental and economic perspective. This cannot be achieved without the diagnostic monitoring of underground water extraction equipment. Keeping track of the water wells’ operational parameters is not sufficient, however. The ability to assess the technical condition of drilled wells quickly and easily is equally important, especially in cases of malfunctions and failures. Video inspection – one of the methods of well-hole diagnostics – allows to picture the technical condition of the structure, identify root causes of the malfunction and indirectly interpret the environment within the water well; all during the examination itself. It is a perfect tool to assist more traditional methods of monitoring the well’s operational parameters. It can also serve to verify the quality and compliance of the structure of new water wells as well as to assess the condition of wells before they are made operational.