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Browsing by Subject "SHmax"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Interpretacja zniszczeń ścian otworów wiertniczych pod kątem współczesnych naprężeń tektonicznych
    (Data obrony: 2014-09-30) Bobek, Kinga
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    Interpretation of borehole wall failures was carried out on three boreholes: Nosówka 8, Zubowice 2 and Mełgiew 5 localized in SE Poland. The study concerned the Paleozoic strata in the Lublin Basin and beneath the Eastern Outer Carpathians. Based on a succession of tectonic structures occurring in cores, the Variscan tectonic history of the study area was discussed. In the area deformations related to thrust faulting regime following that created in normal faulting regime. Direction of present – day tectonic stress field was established using geophysical logs. Identification of borehole breakouts was performed on data from 6 – arm dipmeter tool with additional control of the results based on acoustic (CAST) and microresistivity (RESMAP) images. The results show N – S direction of SHmax in the borehole Zubowice 2, NNE – SSW in the borehole Nosówka 8 and NNW – SSE in the borehole Mełgiew 5. Results of the studies can be used for planning inclined boreholes and stimulation of exploitation of hydrocarbons reservoirs.