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Featured researches published by Paulina Krakowska.


Computational Geosciences | 2016

X-ray computed microtomography—a useful tool for petrophysical properties determination

Jadwiga Jarzyna; Paulina Krakowska; Edyta Puskarczyk; Kamila Wawrzyniak-Guz; J. Bielecki; Konrad Tkocz; Jacek Tarasiuk; Sebastian Wroński; Marek Dohnalik

The main goal of the research was to employ the unique data delivered by various methods to improve the determination of rock reservoir properties. Results of X-ray computed tomography (XRCMT), one of the newest techniques providing high-resolution images of rocks, were used to show that very precise information from this tool is complementary to results from other methods. Standard laboratory measurements (helium pycnometer, mercury injection porosimetry, permeameter) and sophisticated experiments (X-ray computed tomography and nuclear magnetic resonance spectroscopy) were performed to obtain and compare results. Four types of specimens: typical Miocene sandstone-mudstone-claystone rock samples, artificial corundum specimens, shale gas plugs, and limestone sample were investigated to obtain the porosity, permeability, density, and other parameters used in rock descriptions. Mutual relationships between selected groups of rock material properties were presented to provide an integral picture of rock characteristics. The XRCMT results were in general not influenced by lithology, but there were observed shaliness effects on the shape of pores, cross sections, and the tortuosity of porous channels. An analysis of the average porosity and the standard deviation of each XRCMT plot provided information about differences in the heterogeneity of a formation. Thus, the XRCMT method was recommended in pore space parameter determination for microfracture fluid propagation monitoring. There was also observed equivalence between part of the NMR signal from clay-bound water and the XRCMT volume subgroups in porosity/permeability—structural classes I and II. So, the use of the two-subsample approach in the XRCMT interpretation was promoted.


Acta Geophysica | 2015

Tight Reservoir Properties Derived by Nuclear Magnetic Resonance, Mercury Porosimetry and Computed Microtomography Laboratory Techniques. Case Study of Palaeozoic Clastic Rocks

Paulina Krakowska; Edyta Puskarczyk

Results of the nuclear magnetic resonance (NMR) investigations, mercury porosimetry measurements (MP) and computed microtomography (micro-CT), applied to the tight Palaeozoic rocks from the depths lower than 3000 m, were presented to estimate their reservoir potential. NMR signal analysis and interpretation were performed. Based on NMR driven models, permeability and Free Fluid Index were calculated for data sets divided into homogeneous clusters. Computerized mercury porosimetry results visualization and processing provided useful information, as the automatically determined Swanson parameter is correlated with petrophysical properties of rocks. Micro-CT enriched the image of porous space in qualitative and quantitative ways. Homogeneity of pore space structure was discussed using micro-CT approach. Integration of the results in the frame of reservoir parameters from standard laboratory methods and the modern ones resulted in the improvement of methodology for determining the old, deep-seated, hard sedimentary rocks reservoir potential.


Archive | 2017

Shale Gas in Poland

Jadwiga Jarzyna; Maria Bała; Paulina Krakowska; EdytaPuskarczyk; Anna Strzępowicz; Kamila Wawrzyniak-Guz; DariuszWięcław; Jerzy Ziętek

An example of interpretation of the Silurian and Ordovician shale formations in the Baltic Basin in Poland regarding determination of potential sweet spots is presented. Short geological information shows the position of shale gas play. Description of the data—laboratory measurement outcomes (petrophysical and geochemical) and well logging—presents results available for analyses. Detailed elemental analyses and various statistical classifications show the differentiation between sweet spots and adjacent formations. Elastic property modelling based on the known theoretical models and results of comprehensive interpretation of well logs is a good tool to complete information, especially in old wells. Acoustic emission investigations show additional characteristic features of shale gas rock and reveal that acoustic emission and volumetric strain of a shale sample induced by the sorption processes are lower for shale than for coals.


Applied Magnetic Resonance | 2015

Rock Reservoir Properties from the Comprehensive Interpretation of Nuclear Magnetic Resonance and Mercury Injection Porosimetry Laboratory Results

Jadwiga Jarzyna; Paulina Krakowska; Edyta Puskarczyk; Roman Semyrka

AbstractCombination of laboratory measurements res ults of various properties, i.e. porosity, density, permeability and mineral composition, was done to get additional factors useful in fluid flow description in the Miocene sandy-shaly formation. Special computer processing of nuclear magnetic resonance outcomes and mercury injection porosimetry results turned out to be useful in the estimation of the relationships facilitating the reservoir characterization and defining new helpful factors. Determination of the relationships between groups of quantities describing pore space of rock formation was presented as the basis for permeability prediction and for relationships extrapolation into interesting areas.


Studia Geotechnica et Mechanica | 2017

Technical note. The concept of a computer system for interpretation of tight rocks using X-ray computed tomography results

Magdalena Habrat; Paulina Krakowska; Edyta Puskarczyk; Mariusz Jędrychowski; Paweł Madejski

Abstract The article presents the concept of a computer system for interpreting unconventional oil and gas deposits with the use of X-ray computed tomography results. The functional principles of the solution proposed are presented in the article. The main goal is to design a product which is a complex and useful tool in a form of a specialist computer software for qualitative and quantitative interpretation of images obtained from X-ray computed tomography. It is devoted to the issues of prospecting and identification of unconventional hydrocarbon deposits. The article focuses on the idea of X-ray computed tomography use as a basis for the analysis of tight rocks, considering especially functional principles of the system, which will be developed by the authors. The functional principles include the issues of graphical visualization of rock structure, qualitative and quantitative interpretation of model for visualizing rock samples, interpretation and a description of the parameters within realizing the module of quantitative interpretation.


Journal of Natural Gas Science and Engineering | 2016

Computed X-ray microtomography as the useful tool in petrophysics: A case study of tight carbonates Modryn formation from Poland

Paulina Krakowska; Marek Dohnalik; Jadwiga Jarzyna; Kamila Wawrzyniak-Guz


Annales Societatis Geologorum Poloniae | 2013

Multi-method approach to velocity determination from acoustic well logging

Jadwiga Jarzyna; Maria Bała; Paulina Krakowska


Journal of Thermal Science | 2018

Comprehensive Approach for Porous Materials Analysis Using a Dedicated Preprocessing Tool for Mass and Heat Transfer Modeling

Paweł Madejski; Paulina Krakowska; Magdalena Habrat; Edyta Puskarczyk; Mariusz Jędrychowski


Journal of Petroleum Science and Engineering | 2018

Innovative characterization of tight sandstones from Paleozoic basins in Poland using X-ray computed tomography supported by nuclear magnetic resonance and mercury porosimetry

Paulina Krakowska; Edyta Puskarczyk; Mariusz Jędrychowski; Magdalena Habrat; P. Madejski; M. Dohnalik


Geology, Geophysics and Environment | 2011

Velocity models for seismics based on well log data

Jadwiga Jarzyna; Maria Bała; Paulina Krakowska

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Jadwiga Jarzyna

AGH University of Science and Technology

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Edyta Puskarczyk

AGH University of Science and Technology

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Kamila Wawrzyniak-Guz

AGH University of Science and Technology

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Magdalena Habrat

AGH University of Science and Technology

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Mariusz Jędrychowski

AGH University of Science and Technology

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Paweł Madejski

AGH University of Science and Technology

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Maria Bała

AGH University of Science and Technology

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Roman Semyrka

AGH University of Science and Technology

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Anna Strzępowicz

AGH University of Science and Technology

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J. Bielecki

Polish Academy of Sciences

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