Naslov
Indicator Kriging porosity maps of Upper Miocene sandstones, Sava Depression, Northern Croatia

Autori
Malvić, Tomislav ; Novak, Karolina ; Novak Zelenika, Kristina

Izvornik
RMZ - Materials and geoenvironment (1408-7073) 62 (2015), 1; 37-45

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
sandstones ; Indicator Kriging ; porosity ; Upper Miocene ; Sava Depression ; Croatia

Sažetak
There are geologically and geostatistically analysed two, presently, the most interesting Upper Miocene sandstone Croatian hydrocarbon reservoirs in the Sava Depression regarding injection of carbon-dioxide. The intention is increasing oil recovery and, simultaneously, keeps part of injected CO2 permanently in depleted reservoirs. Lithologically, both reservoirs are dominantly fine to medium- grained sandstones, with very restricted pelitic content, where silt, clay and marl fractions are increased only in laterally marginal parts. Lithostratigraphically (informally) those two reservoirs are named as “Gamma 3” (older, here analysed as reservoir “A”) and “Gamma 4” (younger, here as reservoir “B”), both belonging to the Iva Member, i.e. the Ivanić Grad Formation. Indicator Kriging had been used to map probabilities to obtain different porosities that indicated on different lithofacies.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Rudarstvo, nafta i geološko inženjerstvo

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