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Browsing by Subject "subfacies"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Analiza profilowań geofizyki otworowej pod kątem oceny facji z wykorzystaniem informacji geologicznej
    (Data obrony: 2013-10-07) Wysokiński, Tomasz
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    The M.Sc. Thesis includes geological description of the Zechstein reservoir rocks in the Polish Lowland. The research was done on three subfacies of the main dolomite: mudstones, grainstones and boundstones. Assessing the possibility of subfacies recognition on well log measurements was done with the use of laboratory results and petrophysical parameters. Analysed subfacies have specific petrophysical properties and give characteristic features in well logs. Recognition and distinguishing of these features means recognition of reservoir rock facies.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zmienność parametrów petrofizycznych subfacji dolomitu głównego zachodniej strefy półwyspu Grotowa w świetle badań porozymetrycznych
    (Wydawnictwa AGH, 2008) Semyrka, Roman; Semyrka, Grażyna; Zych, Izabela
    The microfacial analysis, together with detailed sedimentological analysis, enabled the authors to distinguish depositional environments of the Main Dolomite succession in the study area. The Main Dolomite is characterized by diversity in thickness, lithology and facial development of the following zones: foot of the carbonate platform, barrier and platform plain. Three principal sub-facies were distinguished there: grainstones, mudstones and boundstones (the microbial sub-facies). These sub-facies reveal diversified petrophysical paramaters. The analysis is based on results of porosimetric measurements which enable assessment and qualification of this horizon from the point of view of its hydrocarbon reservoir capacity and pore space character. Principles of porous rock qualification in terms of hydrocarbon reservoirs include mainly assessment of: effective and dynamic porosities for oil and gas, bulk and framework densities, and pore space geometry (distribution of predominating pore diameters and specific surface of the pore space). This assessment refers to the pore space in which processes of migration and accumulation of reservoir fluids occur. Statistical analysis of the petrophysical parameters revealed their relationships within the distinguished lithofacial zones, which represent also an important solution.