关键词: 穆格莱德盆地, 浅层次生油藏, 岩性油藏, 基岩潜山油藏, 天然气藏

Abstract: The primary reservoirseal assemblage (RSA) of the BentiuAradeiba formations in the Muglad Basin, Sudan is becoming overexplored, which significantly reduces inventory of drillable prospects and makes further exploration more difficult. Based on our reservoir forming study and recent drilling data, we propose that there are four novel exploration domains in the basin, i.e., the secondary oil reservoir in shallow formations, lithological oil reservoir, buried basement hill oil reservoir, and gas reservoir below source rocks. The four domains are characterized as follows: the fault step zones and palaeouplifts of the Kaikang subbasin are the favorable targets for the secondary oil reservoir in shallow formations; the Fula, Bamboo and Sufyan depressions and Neem South slope are potential candidates for the lithological oil reservoir; the basement hills blanketed by AG2 and/or AG4 source rocks in the center and slope of depressions should be the first choice for buried basement hill oil reservoir; and finally, the AG5 structural prospects distributed in the Neem area, the FulaMoga and SharafAbu Gabra structural zones and the central structural zone of the Sufyan depression, could be selected as favorable targets for the largemiddlescale natural gas reservoir below source rocks.

Key words: Muglad Basin, secondary reservoir in shallow formations, lithological reservoir, buried basement hill reservoir, natural gas reservoir