Wyniki wyszukiwania - BazTech

1

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.

2

Porównanie interpretacji obrazowania ścian otworu wiertniczego za pomocą sondy XRMI z wynikami strukturalnej analizy rdzeni wiertniczych

Liana B., Ząbek G.

Prace Naukowe Instytutu Nafty i Gazu

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2016

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nr 209 wyd. konferencyjne

169--172

PL

Obrazowanie ścian otworu wiertniczego przy wykorzystaniu imagera mikroopornościowego (XRMI) umożliwia lokalizację elementów strukturalnych, takich jak szczeliny naturalne oraz indukowane czy strefy uskokowe, a także określenie ich przestrzennej orientacji. Analiza strukturalna rdzeni wiertniczych pozwala na obserwację struktur bezpośrednio występujących w skale. Dodatkowo umożliwia badania mineralogiczno-geochemiczne wypełnienia szczelin oraz ocenę parametrów hydraulicznych szczelin. Praca przedstawia wady i zalety stosowania wymienionych metod analizy strukturalnej w obrębie otworu wiertniczego, a także opis integracji obydwu metod.

EN

Visualization of wellbore walls using X-tended Range Micro Imager Tool (XRMI) allows to identify structural elements such as natural and induced fractures, fault zones and to define spatial orientation of this structures. Structural analysis of cores enable observations of structures occured directly in rock formation. Additionally, it is possible to perform mineralogical and geochemical analysis of fracture filling and hydraulic conductivity evaluation based on core samples. Paper presents advantages and disadvantages of using mentioned methods of structural analysis in wellbore and also a description of integration of these.

3

Analysis of influence of temperature on wellbore tubing dimensions

Kwietniewski M., Miedzińska D., Niezgoda T., Małek E.

Journal of KONES

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2016

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Vol. 23, No. 4

269--273

EN

The construction of exploitation wellbore is complex, it consists of several columns of pipelines which perform different tasks. It is very important to preclude flow of reservoir fluid between wellbore and ground. Tubing is a kind of a pipeline which is very important element of oil and gas wellbore construction. It allows to transport fracturing medium between wellbore station and underground deposit. Manufacture quality and correct mounting of tubing in the wellbore are the key for effective exploitation. However, during work those pipes are subjected to changeable loads which results in temperature value changes for example. That temperature variations can be caused by cold medium transport inside the pipe. In the paper, analyses of influence of temperature value changes on the tubing shrinkage were presented. Numerical analyses of section of pipe vertically located in the wellbore and loaded with changeable temperature were carried out. The calculations were made with the use of coupled structural and thermal analyses. Received results of tubing shrinkage for fragment of pipe were adapted to the column of pipes of 3000 m length. Results of numerical analyses were verified with the analytical calculations. Material of tubing was assumed as steel P110 which is often applied in the wellbore construction.

4

Zastosowanie procesu utleniania manganianem(VII) potasu do wstępnego oczyszczania płynu zwrotnego otrzymywanego ze szczelinowania hydraulicznego odwiertu za gazem łupkowym

Michel M. M., Reczek L., Granops M., Borowicz M.

Przemysł Chemiczny

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2013

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T. 92, nr 5

682-684

5

Oczyszczanie ścieków (płynu zwrotnego) powstających po szczelinowaniu hydraulicznym

Granops M., Firlit Z., Michel M. M., Granops J.

Przemysł Chemiczny

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2013

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T. 92, nr 5

675-678

6

Badanie wstępnego oczyszczania płynu zwrotnego otrzymywanego ze szczelinowania hydraulicznego odwiertu za gazem łupkowym

Michel M. M., Reczek L., Granops M., Tomalak P., Okoński R., Żytelewska E.

Przemysł Chemiczny

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2013

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T. 92, nr 5

679-681

7

Numerical study of the hydrodynamic efficiency of the multi-stage filter setting technology

Kuljabekov A. B., Inkarbekov M. K., Tungatarova M. S., Alibayeva K. A., Kaltayev A.

Archives of Mining Sciences

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2013

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Vol. 58, no. 3

691--704

EN

In this work the numerical study of the hydrodynamic efficiency of the multistage filters setting technology is carried out on the basis of mathematical simulation. Obtained results of a flow of solution in porous media near a wellbore qualitatively conform to the experimental data. In calculations the well is considered as the high-permeability channel with the fictitious permeability coefficient depending on a filter construction (porosity, form of perforations). The results of calculation show that the fictitious permeability coefficient has deep influence on the fluid influx to the well and the distribution of flow rate on well height is not uniform. The developed model is used for the axisymmetric case. Calculations were carried out for a single well; however it can be easily applied to solve the 3D problem with various sets of wells.

PL

W artykule omówiono efektywność hydrodynamicznych filtrów na podstawie modelowania matematycznego. Decyzję doboru stref filtracji w sposób jakościowy są potwierdzone badaniami eksperymentalnymi. W obliczeniach numerycznych założono istnienie wysoko-przepuszczalnych kanałów z założoną fikcyjną przepuszczalnością zależną od konstrukcji (powierzchni otwarcia). Wyniki obliczeń pokazują, że współczynnik przepuszczalności ma duże znaczenie dla dopływu płynu do otworu i niejednorodnego profilu pionowego natężenia przepływu. Model numeryczny dotyczy symetrii osiowej. Obliczenie wykonano dla pojedynczego otworu. Rozwiązanie może być zastosowane do modelowania trójwymiarowego z uwzględnieniem otworów.

8

Study of usage efficiency of multistage filters on mineral leaching process

Alibayeva K. A., Kuljabekov A. B., Tungatorova M. S., Kaltayev A.

AGH Drilling, Oil, Gas

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2013

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Vol. 30, no. 1

19--35

EN

In this work the numerical study of the usage efficiency of the multistage filters setting technology on the process of mineral extraction by the in-situ leaching method is carried out on the basis of mathematical simulation. A comparison of the extraction degree at single and multistage filters is implemented. Obtained decisions for a multistage filters setting qualitatively conform to the experimental findings.

9

Vlianie kislotnoj obrabotki na proniacaemost’ karbonatnyh porod

Bulgakova G. T., Kamaltinova A. V.

Prace Instytutu Nafty i Gazu

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2008

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nr 150 wydanie konferencyjne

901--905

EN

Models of near wellbore region acidizing at pressures below the parting pressure of formation are constructed: one-dimensional model of a wormhole and stochastic model of dissolution structure. In one-dimensional case in wormhole model it is supposed, that the growth direction of dissolution structure is known, and the axis of model is the axis of a wormhole. Results of wormhole modeling were compared to experimental data of one of Russian oil Fields. In two-dimensional case it is impossible to predict growth direction as the dissolution process has stochastic nature. Therefore, the dissolution structure is considered as fractal. Stochastic model is based on model of dielectric-breakdown. On models various characteristics of dissolution structures depending on Damkohler number defined as ratio of convection time to reaction time and Peclet number defined as ratio of diffusion time to convection time were investigated, also acidizing optimum technological parameters were investigated.

10

Laboratoryjne symulacje usuwania uszkodzenia strefy przyodwiertowej w podziemnych magazynach gazu

Biały E.

Nafta-Gaz

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2008

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R. 64, nr 4

246-252

PL

W artykule opisano laboratoryjne badania usuwania uszkodzenia strefy przyodwiertowej w odwiertach PMG, spowodowanego przez olej sprężarkowy, metodą przemywania. W laboratoryjnych symulacjach usuwania uszkodzenia zastosowano nowe, nieszkodzące środowisku, środki chemiczne. Oceniono skuteczność zastosowanych preparatów w usuwaniu uszkodzenia skały złożowej z osadów olejowych i wytypowano najbardziej skuteczny produkt.

EN

In this paper were presented laboratory research for removing the near wellbore formation damage from underground gas storage, which is caused by compressor oil. In these laboratory tests for removing formation damage were used new harmless environment chemical agents. Effectiveness these agents for removing rock formation damage from oil deposits were estimated and the most effective product was chosen.