摘要
北部湾盆地是一个以新生代为主的中新生代沉积盆地.其早第三纪为断陷,晚第三纪为拗陷.盆地内油源丰富,储集层发育,生、储、盖层良好,油气藏类型多,已获一批油气田,属构造油气藏、地层油气藏和复合油气藏.油气藏主要分布在生油凹陷中心及其周缘.
The Beibu Gulf basin is a Mesozoic and Cenozoic sedimentary basin, doni-inated by Cenozoic sediments. The basin is located at the juncture of the circ-um-Pacific tectonic belt and the Tethyan-Himalayan tectonic belt, belonging to neither a stable table-land type nor an active trough type. In the basin, wr-ench structure is dominant and mainly distribute three groups of faults, trend-ing NE, NW and NW in strike.
Palaeogene is in faulted phase, and Neogene in downwarping phase. Liush- agang Formation, a mud-shale source bed of over 1,000m thick, was built up from Eocene to early Oligocene. In the basin, source reservoir and capping are in good conditions. There are various oil and gas resources. Some oil-gas fields (or oil-gas bearing structures) have been found, belonging to structural, strati-graphic and' composite types. These oil and gas resources mainly He in the center and sides of a source depression. But the know oil reserves are far from the potential oil resources, therefore, some other tectonic parts of the basin are also with bright prospects.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1989年第3期73-82,共10页
Marine Geology & Quaternary Geology
