Naslov
The relationship between sandstone depositional environment and water injection system, a case study from the Upper Miocene hydrocarbon reservoir in northern Croatia

Autori
Ivšinović, Josip

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), stručni

Izvornik
2nd Croatian scientific congress from geomathematics and terminology in geology- PROCEEDINGS OF REVIEWED PAPERS / Malvić, Tomislav ; Velić, Josipa ; Rajna, Rajić - Zagreb : Rudarsko-geološko-naftni fakultet Sveučilišta u Zagrebu, 2018, 65-75

ISBN
978-953-6923-40-3

Skup
2. hrvatski znanstveni skup iz geomatematike i nazivlja u geologiji

Mjesto i datum
Zagreb, Hrvatska, 06.10.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Neogene, sandstones, hydrocarbons, injection, dehydration, Croatia

Sažetak
In the Sava Depression (in Northern Croatia), typical Lower Pontian (Neogene) sandstone reservoir “K”, and the largest hydrodynamic units “K1” are present. The reservoir lithology has been strongly influenced by the regional geological settings, especially lacustrine depositional environments with periodically active turbidites. A contour (isopach) map and correlation section showed an increase of pelitic detritus into reservoir sandstones and/or pinching out. Moreover, marginal fault zones create strike-slip pull-apart during Lower Pontian, which have lately been inverted into present day faulted anticlines (pop-up). Such geological settings affected the entire production process and equipment for water injection and separation. An appropriate selection of technology has improved the hydrocarbon recovery in terms of absolute volumes as well as the oil - water ratio. A similar approach was very successful for long- term hydrocarbon production on other fields in the Sava Depression, i.e. in heterogeneous sandstone reservoirs, with a large portion of pelitic detritus.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Rudarstvo, nafta i geološko inženjerstvo

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