Some experimental results measuring P-wave phase velocity and seismic attenuation in laboratory under dry and water-saturated conditions at ultrasonic frequencies and atmospheric pressure on sandstone samples of the Milk River Formation in the Writingon-Stone Provincial Park (WOSPP), southern Alberta, are presented and are correlated with petrophysical data obtained from these samples as clay c...

A significant vegetational change occurs in the Late Mississippian (Serpukhovian, Namurian A) across the Enna Marine Zone (EMZ), Upper Silesian Basin, Czech Republic. All plant clades were impacted, including both spore-producing and seed-producing taxa; wetland taxa were unaffected. Similar vegetational responses are not identified elsewhere although, basinwide, thick marine zones (e.g., Barbo...

The Upper Pannonian (UP) sandstone formation has been utilised for thermal water production in Hungary several decades. Although sustainable utilisation requires the reinjection of cooled geothermal brine into host rock, only a fraction used is reinjected country. UP reported to exhibit low injectivity, making challenging, and its petrophysical properties are poorly known, which increases uncer...

the prediction of lithology is necessary in all areas of petroleum engineering. this means that todesign a project in any branch of petroleum engineering, the lithology must be well known. supportvector machines (svm’s) use an analytical approach to classification based on statistical learningtheory, the principles of structural risk minimization, and empirical risk minimization. in thisresearc...


 The article is devoted to the analysis of geological-petrophysical properties Kursengi and Southern fields Lower Kura depression with a view clarify changes in physical (carbonate content, permeability, porosity) rocks depth. Promising sediments horizons deposits are also considered based on detailed numerous rock samples. Oil gas bearing objects especially distinguished by area, as well...