Geologia
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ISSN 0138-0974
e-ISSN: 2353-0782
Issue Date
2011
Volume
T. 37
Number
Nr 4
Description
Journal Volume
Geologia
T. 37 (2011)
Projects
Pages
Articles
Application of simple seismic models for interpretation of small reef objects under conditions of low resolution seismic data and incomplete borehole information
(Wydawnictwa AGH, 2011) Barmuta, Jan Paweł; Pietsch, Kaja
Tracing facies and saturation with hydrocarbon along sedimentary beds is one of Seismic's most important objectives. The application of simple seismic modeling for the interpretation of low resolution seismic data is presented. This method confirmed the possibility to trace changes in Main Dolomite (Ca2) development and to detect, comparatively small to the seismic resolution, hydrocarbon traps.
Modelowania 1-D procesów generowania gazu ziemnego w utworach karbońskich w głębokiej części polskiego basenu czerwonego spągowca
(Wydawnictwa AGH, 2011) Botor, Dariusz
One-dimensional numerical modeling of hydrocarbon generation in profiles of Carboniferous source rocks was performed. These source rocks were located in the substratum of select areas in the central deep Rotligend Basin (Objezierze IG-1, Piła IG-1, Byczyna-1, Brześć Kujawski IG-1, Budziszewice IG-1 and Kutno-1). Carboniferous sediments of the central deep basin with a mean random vitrinite reflectance of 1.0-2.7%, generated significant amounts of methane, with low nitrogen content. Gas generation processes occurred mostly during the Mesozoic era particularly between Early Triassic to Late Jurassic periods and achieved kerogen transformation ratio (TR) values of 77-100%.
Interpretacja ilościowa profilowań geofizyki otworowej w przypadku niskiej jakości profilowań i ograniczonego zakresu metodycznego pomiarów
(Wydawnictwa AGH, 2011) Czopek, Barbara; Nowak, Józef
This paper presents a causal analysis of the most common errors occurring during recording and preliminary processing of well logs on both archival as well as current data obtained with Halliburton tools. The authors discuss the ways to identify and to correct these errors, under specific conditions. They present graphic examples of recording errors and the effects of their elimination. Examples of applying corrected standardized logs in petrophysical quantitative analysis involving determination of mineral composition, porosity and water saturation are provided by the authors. It is their opinion that the results of such analysis make it possible to generate reliable synthetic (theoretical) logs of density and interval transit time, which are useful input data in solving various geological problems related to hydrocarbon exploration, production and storage, to geothermal energy sources and many other issues.
Kompleksowe badania geofizyczne i geologiczne w celu rozpoznania nagromadzenia osadów ochrowych w rejonie miejscowości Zabratówka koło Rzeszowa
(Wydawnictwa AGH, 2011) Gołębiowski, Tomisław; Sala, Dariusz; Ratajczak, Tadeusz
This article presents the results of comprehensive research on ochre sediments from the Zabratówka, village near Rzeszów. Fourteen boreholes were drilled in the investigation area for visualization of geological structures and for collecting ground samples for further laboratory measurements. Geochemical, mineralogical and petrophysical analyses were carried out in laboratory and their results were correlated to prepare a geophysical interpretation model. Preliminary georadar surveys were conducted between boreholes to analyze the possibilities and limitations of this measurement technique used in outlining Carpathian ochre accumulations. Detailed three-dimensional georadar surveys were carried out in the selected area of the research site and the results of geophysical measurements were correlated with the information from boreholes and laboratory tests.
Rozwój tektoniczno-basenowy Karpat zewnętrznych na przykładzie budowy geologicznej złóż Grabownica, Strachocina i Łodyna oraz ich otoczenia
(Wydawnictwa AGH, 2011) Jankowski, Leszek; Probulski, Jaromir
Łodyna, Grabownica, Strachocina, Wańkowa and Leszczowate oil fields are situated in the northern margin of the central Carpathian Depression, on both sides of so called Węglówka Unit and it's prolongation to the East. Fieldwork and seismic section interpretations indicate multistage and complexity of process of closing basin and tectonic deformation. During the compression and oblique collision stage of the tectonic deformation southern margin of Węglówka horst was reactivated as a strike-slip fault and associated (with this strike-slip) flower structures were developed. The Węglówka intrabasinal ridge (horst) was cut in many places off and a few tectonic elements has been created. In front of the Silesian Unit thrust a footwall shortening is visible. The whole area of these oil fields is apparently connected with reactivated tectonic zone, southern margin of formerly intrabasinal Węglówka ridge. In the last stage of deformation some thrust and strike-slip structures were reactivated as a normal faults (posttectonic collapse structures). Immaturity of the Menilite Beds in this region suggests a lack of relationship between the local oil and Menilite Beds and indicates migration origin of local oil. A lots of tectonic mélange zones developed in this area play important role in petroleum system creating open or closed geochemical system - in some cases they are migration paths for gas and oil. However, main migration paths in this seems to be deep rooted, reactivated, normal faults normal to the strike of main tectonic elements, probably inherited from syncollisional extension stage.