Browsing by Author "Zakrzewski, Adam"

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Charakterystyka geochemiczna materii organicznej mezozoiku centralnej części Gór Krymskich
(Data obrony: 2014-07-07) Zakrzewski, Adam
Wydział Geologii, Geofizyki i Ochrony Środowiska
In this dissertation geochemical characteristic of organic matter in the Mesozoic strata of central part of the Crimean Mountains from Aj-Petri and Jalta massifs was performed. The analysed sediments in most cases contains minimal quantity of organic carbon, usually below 0.2 wt.% and traces quantities of hydrocarbons. Rocks from all examine samples have weak hydrocarbon potential. Geochemical researches shows predominance II type of kerogen with admixture of kerogen type III. The thermal maturity changes within the interval from 0,6 to 1,7 in Ro scale or “oil window” and “gas window” range. The thermal modeling reveled, that received the “oil window” phase of the Upper Jurassic organic matter in the Aj-Petri and Jalta massifs took place in the Paleocene and increase in this phase of maturity lasted until the middle Eocene.
Access status: Open Access ,
Geochemical characteristics of Neogene methane-bearing lignite of the Bełchatów region
(2017) Maruta, Michał; Zakrzewski, Adam
Coal beds could contain various amount of methane. This attribute might be dangerous in shafts or quarrying. Among other things, the works in the coal beds, including drilling, potentially there is a risk of exceeding the methane lower explosive limit. But on the other hand it is a source of unconventional hydrocarbon accumulations. In this paper geochemical characteristic of organic matter of tertiary brown coal from central part of Poland were performed. Geochemical surveys helps to know about genesis of methane from study area. The analysed samples contain various quantity of organic carbon, from 20,74 to 71.93 wt. %. Lignite from examine samples have weak hydrocarbon potential. In tertiary sediments prevails III type of kerogen with admixture of II type of kerogen. The thermal maturity of the tertiary organic matter changes within the interval from 354 to 419 in Tmax scale. Organic matter is immature. The composition of bitumens is different in various part of study area. Elemental analysis confirm that brown coal was comprised mostly by humic-group macerals. Coal samples contain methane with mixed genesis.
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Procesy naftowe w utworach starszego paleozoiku w obszarze wyniesienia Łeby
(Data obrony: 2013-01-23) Zakrzewski, Adam
Wydział Geologii, Geofizyki i Ochrony Środowiska
W niniejszej pracy dokonano analizy procesów naftowych, które doprowadziły do wygenerowania węglowodorów i ich akumulacji w skałach starszego paleozoiku na obszarze wyniesienia Łeby. Przedstawiono również charakterystykę skał macierzystych górnego kambru, ordowiku i landoweru, dla oceny ich potencjału węglowodorowego. Z punktu widzenia możliwości akumulacji węglowodorów omówiono środkowokambryjskie piaskowce w kontekście ich roli jako skały zbiornikowej.