摘要
中国近海分布着广泛的前新生代地层 ,特别是台湾海峡盆地至渤海海域 ,50 %探井的钻遇此套地层。前新生代地层在海域以沉积岩为主 ,厚度大 ,时代全 ,主要为华北地台与下扬子准地台为背景的新生代沉积基础层。通过地化分析、油岩对比 ,证明前新生代沉积岩有良好的生烃条件。经源岩对比 ,证明源岩对油气的成藏作出了贡献。井的测试结果与储层分析都证明前新生代地层有良好的储集性能。海域前新生代地层是下步油气勘探的新领域 ,有广阔的前景。预测存在有前生前储、新生前储及混合
The Pre Cenozoic stratum was widely distributed in Chinese offshore areas, particularly from Taiwan Strait basin to Bohai Bay basin. About 50% of exploration wells in Chinese offshore areas penetrated the Pre Cenozoic stratum which consists mainly of sedimentary rock with large thickness and different ages. The geochemical analysis and oil source correlation indicate that good source rock exists in Pre Cenozoic, and part of oil in reservoirs derived from the source. Core test and reservoir analysis show that there exists certain good reservoir in the Pre Cenozoic stratum. The Pre Cenozoic stratum in Chinese offshore areas is a new venture for next exploration, and is of wide prospectivity. Three possible types of oil/gas pools are predicted, and these are both source and reservoir for the Pre Cenozoic,the source for the Cenozoic and reservoir for the Pre Cenozoic, and mixed above two types.
出处
《地学前缘》
EI
CAS
CSCD
2000年第3期215-226,共12页
Earth Science Frontiers
