Subsurface geological relations in the field Klokočevci : master's thesis

Eksploatacijsko polje Klokočevci nalazi se u Osječko - baranjskoj županiji. Geološki gledano pripada istočnom dijelu Dravske depresije. Ukupno je izrađeno 18 bušotina od kojih je 5 proizvodnih naftnih. Strukturno gledajući naftno plinsko polje Kolkočevci dio je antiklinorija s dva tjemena Bokšić – Klokočevci . U naftnom polju Klokočevci pronađene se dvije ležišne „serije“ ugljikovodika, E i F. Donjomiocenske starosti je „serija“ F, a izgrađena je od kvarcnih breča i konglomerata s fragmentima gnajsa i kvarcita. „Serija“ E je badenske starosti i čine ju raspucali lapori, pjeskoviti lapori i laporoviti vapnenci uz kvarcne šljunkovite pješčenjake i polimiktne breče i konglomerate. Zamke su strukturno – stratigrafskog tipa. Kartirane su strukture po EK-markerima te načinjeni pregledni geološki stupovi.Abstract: Exploitation field Klokočevci is located in the esat part of Croatia (Osječko – baranjska county). Geologically it belongs to the eastern part of the Drava Depression. There are 18 wells and 5 of them are oil producing. Structurally, the oil and gas field Bokšić - Klokočevci represent an elongated brachianticline with two tops. There are two reservoir hydrocarbons "series", E and F. Lower Miocene age is of "series" F, which is made of quartz breccias and conglomerates with fragments of gneiss and quartzite. "Series” E is Badenian age and is made of fractured marls, sandy marls and marly limestones with quartzitic, gravelly sandstones, conglomerates and breccias. Traps are of structural – stratigraphic type. There are interpolated structural maps based on e-log markers and numerous geological sections had been given