摘要
将层序控制因素分析和沉积学响应相结合 ,以短期基准面旋回为成因地层单元 ,较详细地分析了坳陷盆地、断陷盆地浅水辫状河三角洲发育区可容纳空间的不同发育特点、河流作用方式的变化、以及储层宏观分布特征 ,讨论了物源供给对储层的影响。以鄂尔多斯盆地塔巴庙地区和焉耆盆地宝浪油田宝北区块为例 ,说明了短期基准面旋回识别标志 :厚层叠置砂体底部冲刷面和下切谷、辫状分流河道曲流化特征、滨岸沙坝 -滨岸沼泽相沉积 ;阐述了厚层稳定煤层作为地层对比标志的理论依据 ;
In this paper, the author integratesthe controllingfactors of sequence with sedimentary response. It takes a short term base level cycleas a geneticstratigraphic unit to discuss the different accommodationspace development, the change of fluvial process, macroscopic distribution of reservoirs, the influence of sediment supply in a down warped basin or a rift basin where shallow water braided delta develops. Taking the Tabamiao Area of Ordos Basin and the Baobei Block, Baolang Oil field of Yanqi Basin as examples, It points out some identification symbols such as the wash plane and incised valley at the bottom of thick overlap sand-body, the meandering of braided distributary channel, the sedimentaries of offshore barrier faciesand offshore marsh facies. It provides the theoretical evidence for stable and thick coal bed regarded as a mark of formation comparison. The conception, overplus subaerial accommodationspace, explains reasonablywhy the reservoirs mainly distributein rise half cycle of base levelcycle.
出处
《沉积学报》
CAS
CSCD
北大核心
2004年第1期87-94,共8页
Acta Sedimentologica Sinica
