摘要
以现有资料为基础,通过对区域构造、沉积储层、烃源岩特征等基础石油地质条件研究,认为南海海域各盆地经历了断陷期和坳陷期沉积演化,沉积了巨厚的新生代地层,自下而上发育了冲积扇相、河湖相、滨岸沼泽相、滨海相、浅海相、半深海相沉积体系,区域上存在始新统、渐新统和中新统3套烃源岩,前新生代基岩潜山、渐新统砂岩、中新统生物礁3套储层,区域盖层为上新统和更新统浅海-半深海相泥岩。本文对中石油南海探区相关的曾母、北康、南薇西、中建南和琼东南5个盆地的石油地质条件进行综合分析,并对其油气资源潜力进行了预测。
Based on available data, the study on regional structure, sedimentary reservoir and source rock characteristics shows that the basins in South China Sea had experienced sedimentary evolution in faulting period and depression period, deposited thick Cenozoic formation, upwardly developed alluvial fan facies, river-lake facies→ coastal swamp facies→ coastal facies, neritic facies and bathyal deposit system, regionally had 3 source rocks of Eocene, Oligocene and Miocene, 3 reservoirs of pre-Cenozoic basement buried hill, Oligocene sandstone and Miocene reef, with Pliocene and Pleistocene neritic facies and bathyal shale as regional caprock. This paper studies the geological conditions in PetroChina exploration zones in South China Sea including Zengmu, Beikang, Nanweixi, Zhongjiannan and Qiongdongnan these 5 basins and predicts their oil and gas resources potential.
出处
《特种油气藏》
CAS
CSCD
2007年第2期22-26,共5页
Special Oil & Gas Reservoirs
关键词
资源潜力
储层
烃源岩
区域构造
南海
resource potential
reservoir
source rock
regional structure
South China Sea
