Naftnogeološki potencijal područja Velika Ciglena

master's thesis

• Title (english): Petroleum potential of Velika Ciglena area
• Author: Leonarda Zlodi
• Mentor: Vlasta Ćosović (mentor)
• Committee member: Vlasta Ćosović (predsjednik povjerenstva)
• Committee member: Đurđica Pezelj (član povjerenstva)
• Committee member: Nenad Tomašić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2018-11-12, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Na području Bjelovarske subdepresije nalaze se bušotine od interesa Velika Ciglena-1 (VC-1), Velika Ciglena-1alfa (VC-1), Velika Ciglena-2 (VC-2) i Patkovci-1 (Ptk-1). Kako bi se odredio naftnogeološki potencijal područja Velika Ciglena korištene su petrografsko-sedimentološke i biostratigrafske te organskogeokemijske metode na odabranim jezgrovnim intervalima i uzorcima stijena sa sita. Mikroskopirani odabrani petrografski preparati klasificirani su na temelju mikropetrografskih svojstava, a biostratigrafski podaci preuzeti su iz završnih biostratigrafskih izvještaja i provjerni su u WORMS bazi podataka za svaku bušotinu. Za organskogeokemijsku metodu načinjene su na odabranim uzorcima sljedeće analize: sadržaj organskog ugljika, Rock Eval piroliza, ispitivanje netopljive organske tvari (kerogena), mikroskopska analiza organske tvari, ispitivanje bitumena i GC analiza. Prema dobivenim rezultatima određeni su matični intervali za svaku pojedinu bušotinu: VC-1 i VC-1 od 2400 do 2500 m, za VC-2 od 2355 do 2425 m i Ptk-1 od 2200 do 2305 m. Matične stijene područja Velika Ciglena su gornjomiocenski lapori, kalcitom bogati lapori i glinoviti vapnenci i srednjomiocenski fosiliferni šejlovi i fosiliferni lapori. Matične stijene su prosječnog do dobrog generativnog potencijala u višem stupnju katageneze.

Abstract (english)

In the area of Bjelovar subdepression are wells of interest: Velika Ciglena-1 (VC-1), Velika Ciglena-1alph (VC-1), Velika Ciglena-2 (VC-2) and Patkovci-1 (Ptk-1). In order to determine the petroleum potential of the Velika Ciglena area, petrographic-sedimentologic and biostratigraphic and organic geochemical interpretations were done on selected core intervals and ditch samples. Studied samples were classified based on their micropetrographical characteristics, whereas biostratigraphical data were taken from internal reports and checked according to WORMS data base. For organic geochemical study, on chosen samples the following analyses were preformed: Total organic carbon (TOC), Rock Eval pyrolysis, insoluble organic matter (kerogen), microscopic organic matter analysis, bitumen and GC analysis. According to the results, the source intervals for each well were defined: VC-1 and VC-1between 2400 and 2500 m, for VC-2 between 2355 and 2435 m and Ptk-1 between 2200 and 2305 m. The source rocks in Velika Ciglena area are of upper Miocene (marl, calcium rich marls and clayey limestone) and middle Miocene (fossiliferous shale and fossiliferous marl) ages. The source rocks have average to good generative potential in upper phase of katageneza.

• Keywords: Bjelovarska subdepresija; Velika Ciglena; ugljikovodici; organskogeokemijska
• Keywords (english): Bjelovar subdepression; Velika Ciglena area; hydrocarbons; organic geochemical method; source rock
• Language: croatian
• URN:NBN: urn:nbn:hr:217:404206
• Study programme: Title: Graduate university study of Geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-12-04 10:19:10