摘要
苏北盆地泰州组烃源层是国内少有的上白垩统烃源层,其有机质丰度高,干酪根类型为偏腐泥型,处于低熟—成熟演化阶段。尽管泰州组烃源层厚度较薄（20～30m）,但近年来的勘探已发现9个由泰州组烃源层供烃的油藏。泰州组烃源层与电阻率“六尖峰”段相对应,该特征代表了发育于半深湖—深湖、半咸水—咸水环境、以化学成因为主的泥质碳酸盐岩及其有机质形成特征。
As an Upper Cretaceous source rock rare in China,the source bed in Taizhou Formation,Subei basin,is high in organic matter abundance,sapropelic in kerogen type and lower mature-mature in thermal evoluation.The recent exploration has indicated that 9 oil reservoirs are charged by the source bed,although it is quite thin（20～30 m）.The source bed is corresponding to a resistivity interval of ＂six peaks＂,which may represent a hemi-deep to deep lacustrine environment with brackish to salt water,where argillaceous carbonate and organic matter can deposit mainly by a chemical process.
出处
《中国海上油气》
CAS
2008年第1期28-33,共6页
China Offshore Oil and Gas
关键词
苏北盆地
上白垩统
泰州组
烃源层
Subei basin
Upper Cretaceous
Taizhou Formation
source bed
