摘要
对于一个处于勘探初期的沉积凹陷,岩相古地理的恢复无论是对于油气储层的预测还是对于油气资源潜力的评价,都具有十分重要的意义。研究在古生物化石特征分析和沉积地球化学特征分析的基础上,利用介形类与孢粉组合、痕迹化石特征、沉积岩颜色、干酪根类型、微量元素分布等多种信息来综合推断白音查干凹陷下白垩统巴彦花群沉积期的古气候、古水深、水介质特征,建立了该时期沉积体系,指出了勘探的主力生油层和储集层,为下一步油气勘探提供了地质依据。
For a sedimentary depression at the early exploring stage,it was very important to study its litho-facial paleogeography restoration not only for reservoir forecasting,but also for petroleum resource assessment. On basis of studying the features of paleobio-fossol and analyzing the characters of sedimentary geochemistry,the assemblage of ostracoda & sporopollens,bios-traces,the colors of sedimentary rock,the type of kerogen and the distribution of microelements was used for comprehensively judging the paleo-climate,the depth and the brinishness of the water at the sedimentary stage of Bayanhua,early Cretaceous epoch by using multiple discipline information. The sedimentary system of the epoch is established and the major hydrocarbon genetic zones and reservoirs are pointed out,it provides a geological basis for next exploration.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第2期161-165,共5页
Journal of Oil and Gas Technology
关键词
岩相古地理
沉积环境
化石
沉积地球化学
白音查干凹陷
fossil
sedimentary geochemistry
sedimentary environment
paleogeography
Baiyinchagan Sag
