摘要
珠江口盆地前第三纪基底主要是燕山期岩浆岩。由于遭受热液作用、风化作用和构造作用的改造，岩体表层上部形成了风化壳和裂隙带，成为良好的储集层。珠江口盆地与已发现高产基岩油气藏的越南南部陆架盆地有着相似的大地构造背景，相似的形成、演化史，相同的烃源岩系－第三系始新统－渐新统湖相泥岩，基岩岩石类型、侵入期和化学成分以及储集层类型相近，因此同样具有形成基岩油气藏的条件。文中还提出了勘探基岩油气藏需要进一步工作的区域和构造。
The pre-Tetiary basement of the Pearl River Mouth Basin mainly consists of Yanshan magamatite. In the surface and upper part of basement, diagenesis, consequential weathering, hydrothermalism and structural activity generated weathering crust and fractured zones which could be potential reservoirs. The characteristics of the basin are similar to those of the southern continental shelf basin of Vietnam with basement oil accumulations including tectonic background, basin formation mechanism and developing history, lithology, intrusive event and geochemical characteristics, and reservoir types. Based on analysis of formation conditions of basement oil accumulation, the region and prospects with possible oil potertial in the basin are put forward in this paper.
出处
《中国海上油气（地质）》
1998年第6期361-369,共9页
China Offshore Oil and Gas(Geology)
关键词
珠江口盆地
基岩油气藏
油气远景
风化壳
裂隙带
大陆架盆地
buried basement high
oil accumulation
weathering crust
fractured zone
continental shelf basin
