【摘要】 目前,欧加登盆地油气探明程度低,处于早期勘探评价阶段。结合区域地质资料、少量钻井和地震数据,认为盆地为东非裂谷系构造成因,伸展构造环境下(半)地堑、地垒、掀斜断块等构造样式常见,相应发育断(块)鼻圈闭、构造-岩性圈闭和生物礁建隆。勘探部署首选区为中央隆起带及外围斜坡地带。中央隆起带形成时间早,后期受东非大裂谷作用较弱,西部紧邻生油凹陷,发育多套储盖组合,成藏条件优越,且已经发现一定规模的油气藏,是寻找大中型油气田的有利区带。更多还原

【Abstract】 As its oil/gas proved degree is low,Ogaden Basin is in the phase of early exploration and assessment. With reference to the regional geological data,few drilling and seismic data,it is believed that the basin is originated from the structure of East African rift system. In the stretching structural environment,( semi)- graben,horst and tilted block are very common,and correspondingly faulted( block) nose traps,structural- litho trap and bio- reef uplift were developed. The preferred areas for the exploration deployment are the central uplift area and the peripheral slope area. The central uplift area was formed at the early stage,so later East Africa Rift had little effect on the central uplift. Its western part is adjacent to oil generation sag,developing multiple sets of reservoir- caprock assemblage. The accumulation conditions are very favorable and a certain amount of oil and gas reservoirs have been discovered. Therefore,it is the favorable area to look for medium and large oil and gas fields.更多还原