Browsing by Author "Tarkowski, Radosław"

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Access status: Open Access ,
CO2-brine-rock interactions as a result of long term experiment onto rock samples from Chabowo anticline, Poland
(Wydawnictwa AGH, 2013) Wdowin, Magdalena; Tarkowski, Radosław; Manecki, Maciej
The presented work concerns investigations of $CO_{2}$-brine-rock interactions conducted over a period of 20-months. Experiments were carried out at laboratory scale with the use of equipment specifically designed for this purpose. Research materials (reservoir and cap rocks) were taken from the Chabowo 3 well located within Chabowo anticline. The experiments were carried out at room temperature (about 25°C) and pressure about 6 MPa. For samples before and after the experiment a numerous investigations were carried out i.e. petrophysical (porosity, surface area, threshold diameter, average capillary, framework and bulk densities) and petrological-mineralogical characteristics. Also brine used for examination before and after experiment was analyzed (chemical analysis). Petrophysical results have shown a significant decrease of porosity (from 17.0% to 7.5%) and surface area (from 0.395 m$^{2}$/g to 0.196 m$^{2}$/g) in case of sandstone. These changes are caused probably by crystallization of halite in pore spaces, because mineralogical analysis (XRD) has shown the presence of halite (3-5% vol. in the rock) after experiment. More detailed results were obtained during mineralogical analyses of thin sections. These results have shown in sandstone samples a small increase of porosity and a small decrease of feldspar and cements (carbonate and clay) as well as matrix which suggests dissolution of these constituents. For clay stone - after experiment XRD clay fraction has shown absence of clay minerals such as montmorillonite, which may also be caused by interaction between the rock, $CO_{2}$ and brine. Dissolution of some minerals is evidenced by chemical analysis of brine where amounts of most tested ions increase after experiment for both sandstone and claystone.
Access status: Open Access ,
Metody monitoringu podziemnego składowania CO2
(2005) Tarkowski, Radosław; Uliasz-Misiak, Barbara; Szarawarska, Ewa
Undeground storage of CO2 requires control by using monitoring. It needs to be done at the moment of choosing the site for sequestration and also after finishing the process of injection. The aim of monitoring CO2 underground storage is tracing CO2 spreading in geologic formation, controlling injection the integrity of wells during and after operation, verification of CO2 volume, which was injected and controlling parameters of injection. The article presents methods for monitoring underground storage of carbon dioxide used all over the world: measurement of reservoir and exploitation parameters, direct and indirect (well logging, time lapse seismics, crosswell seismics, electromagnetic monitoring of CO2 sequestration, electric resistivity tomography, gravimetric monitoring of aquifers, passive monitoring) methods for detecting the CO2 plume, satellite and air bore methods for detecting land surface deformation.
Access status: Restricted ,
Planowane!
Poziomy z fauną morską dolnego namuru w kopalni węgla kamiennego Sośnica (NW część Górnośląskiego Zagłębia Węglowego)
(Data obrony: 2005) Machłajewska, Iwona
Wydział Geologii, Geofizyki i Ochrony Środowiska
Celem pracy było rozpoznanie i scharakteryzowanie wyróżnionych w serii paralicznej kopalni Sośnica morskich poziomów faunistycznych, opis fauny i najbardziej charakterystycznych gatunków, w nich stwierdzonych, porównanie wykształcenia tych poziomów z ich odpowiednikami w pozostałej części GZW oraz ocena możliwości wydzielenia formalnych jednostek biostratygraficznych. Analiza 4401 okazów pochodzących z 10 poziomów morskich kopalni Sośnica pozwoliła na wyróżnienie 93 gatunków, wśród których stwierdzono 16 gatunków i rodzajów nie notowanych dotąd w NW części GZW. Oprócz stwierdzonych wcześniej poziomów warstw jaklowieckich i porębskich (Jarosz, Barbara, Gabriela, Koks, Henryk, Konrad, Roemer) wykazano obecność poziomów Bezimiennego i Enna. Rolę poziomów korelacyjnych mogą pełnić poziomy: Bezimienny, Enna, Barbara, Henryk, Andrzej, Roemer Dolny i Górny. Stwierdzono, że poziomy faunistyczne mogą być klasyfikowane jako jednostki litostratygraficzne (iłowiec gastropodowy z Sośnicy (wt.)), biostratygraficzne (podpoziom z Cravenoceras roemeri) i ekostratygraficzne, wyróżnione po raz pierwszy w karbonie GZW.
Access status: Open Access ,
Źródła dwutlenku węgla w Polsce dla zaawansowanych technik wydobycia ropy naftowej
(2005) Tarkowski, Radosław; Uliasz-Misiak, Barbara
The article presents possibilities of gaining CO2 from large point sources of emission in Poland for enhanced oil recovery by underground injection of this gas. This technology has been used for decades, especially in the USA, where natural and anthropogenic gas is used. In Poland due to little reserves and natural gas production, anthropogenic CO2 for EOR process could be used. The biggest CO2 emitters are presented (above 500 Gg/year), basic technological process which produce the gas, industrial plants locations, concentration of carbon dioxide in flue/industrial gases are characterized. Economical and environmental aspects of using CO2 for EOR are underlined. Location of the biggest CO2 emitters was defined in connection with hydrocarbon reservoirs location which have various sizes and stags of exploitation.