Browsing by Subject "seismic anomalies"

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Analiza geologiczno-geofizyczna anomalii sejsmicznych w utworach miocenu w rejonie Rylowej (zapadlisko przedkarpackie)
(Data obrony: 2012-12-21) Drozd, Arkadiusz
Wydział Geologii, Geofizyki i Ochrony Środowiska
The thesis presents the problem of identification of seismic anomalies in the Carpathian Foredeep applying analysis of direct hydrocarbon indicators DHI. The influence of reservoir parameters on P-wave velocity (Vp) and the acoustic impedance was analysed together with the interpretation of well logs which allowed to draw conclusions on the absence of a clear correlation between porosity, shale content and Vp. Interpretation of seismic attributes and recursive inversion showed similarities between the tuning effects and gasification layers and revealed the effect of frequency shadow anomaly. The study also indicated the relationship between tectonics of the Sub-Miocene basement and the gas presence in the area of research.
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Analiza geologiczno-geofizyczno-złożowa rejonu złoża gazu ziemnego Morawsko (Przedgórze Karpat)
(Data obrony: 2010-10-19) Smoleń, Mirosław
Wydział Geologii, Geofizyki i Ochrony Środowiska
One of the major areas for gas prospecting is the Carpathian Foredeep with more than 100 discoveries of high methane gas in autochthonous Miocene. The subject of the thesis is the gas accumulation called Morawsko located in the SE part of the Carpathian Foredeep. It is the multilayer gas field. Traps for the natural gas have been classified into structural type, and they are limited of by faults. The structural type traps is a result of anticline-shaped layers overlying basement elevations. In the thesis depth contour maps were brought up to date on the basis of new seismic data. Also, the CaCO3 influence on the porosity and permeability of rocks was analysed in the zones by the boreholes. Thanks to this reinterpretation the II horizon in the borehole Morawsko-4 was regarded as perspective in terms of accumulation of hydrocarbons. Results of the well logging, using the borehole cores descriptions, and genesis of the natural gas in the area of Carpathian Foredeep were also discussed.