Oil accumulation, regional groundwater flow, and inert gas risk in the southern Danube Basin, Hungary

Abstract

In spite of its considerable size and the presence of mature oil source rocks, the Neogene Danube Basin is characterized by the absence of commercial oil accumulations. However, important [Formula: see text] fields have been discovered in the basin, which have been possibly explained recently by displacement of oil by later migration of [Formula: see text] into the reservoirs. Previous studies performed independently in the southern, Hungarian part of the basin (known as the Little Hungarian Plain) have attempted to model petroleum generation/migration history, to identify sources of the [Formula: see text], and to understand the tectonic evolution of the basin and its deep-water flow regime. We were attempting to combine the results of these studies to interpret the fluid-migration history and reveal the influencing processes. This work supports the hypothesis that [Formula: see text] could have played a key role in preventing the formation of oil accumulations. During the latest Miocene, early mature oil and saline water, the latter formed by dissolution of up to now unidentified halites, moved together toward the Mihályi High, a regional uplifted structure in the central part of the basin. Modest amounts of oil could have been trapped there while saline water mixed with the low-salinity water of the reservoirs, with the [Formula: see text] arriving later and displacing the oil.

The Socio-Economic Impact of Migration on the Labor Market in the Romanian Danube Region

“…The scientific literature on the field of the Danube Region is not very wide in terms of articles or books, but there are some topics related to the DRB that need to be mentioned: environmental issues [15][16][17][18], socio-economic issues [19][20][21], strategic and political issues [13,[22][23][24][25][26][27][28] or country-related articles (seven countries that have a percentage of the DRB more than 5% were chosen-Austria (10%) [29][30][31][32], Bulgaria (5.9%) [33][34][35], Germany (7%) [36][37][38], Hungary (11.6%) [35,[39][40][41][42], Romania (29%) [15,34,[43][44][45][46], Serbia (10.2%) [20,[47][48][49][50] and Slovakia (5.9%) [51].…”