Prøveforelesning - tid og sted
Fredag 11 oktober, 10:15 - 11:00, Auditorium 1, Geologibygningen:
Hydrothermal dolomitization: settings, geochemistry and models
Kreeringssammendrag
I avhandlingen undersøkes biologiske, kjemiske og mekaniske prosesser som påvirker muligheten for å finne gass i kalksteiner av Jura alder. Studien viser at tilstedeværelsen av gass i reservoaret forhindrer eller forsinker flere kjemiske prosesser, som har ført til god reservoarkvalitet i de undersøkte kalksteinsintervallene.
Hovedfunn
Kort sammendrag av Morads avhandling (på engelsk):
This study shows that the timing of gas emplacement in carbonate reservoirs are significant for the reservoir quality evolution, because gas inhibit diagenesis and any further reservoir quality destruction. Therefore, the best reservoirs are in the crest (i.e. gas zone) of the anticline and not the flanks (i.e. water zone).
This thesis combines several methods to unravel the chemical, biological and mechanical evolution (i.e. diagenesis) of Upper Jurassic carbonate rocks onshore Abu Dhabi in the United Arab Emirates. These methods have allowed us to get a better understanding of temperatures, chemical compositions of fluids, type of organisms and structures present, as well as the tectonic events that impacted the investigated carbonate rocks. This study shows that it is important to combine diagenesis with burial history and tectonic events in order to improve our knowledge of gas reservoirs in the Arabian Gulf and elsewhere.
Foto og annen informasjon:
Pressefoto: Daniel Morad (portrett)
Annet bildemateriale: Stylolite between highly cemented and less cemented grainstone | Thin section/1000px. Photo: Daniel Morad