摘要
渤中地区普遍存在油气多期运聚成藏。BZ26-2-1井馆陶组原油样品的地球化学分析表明,该原油具有降解和未降解的双重特征:①正构烷烃系列分布完整,且丰度高;②GC/MS分析检出相当丰富的25-降藿烷系列,且绝对浓度较高。这一现象表明馆陶组原油至少存在两期充注过程。
There widely exists oil and gas accumulation of migratory with multiplied characteristics in Bozhong region. Located in southwest of Bozhong depression region and west Bonan of raised region, the geochemical analysis of BZ26-2-1 crude oil samples of Guantao Formation showed that a double characteristics between degradable and non-degradable for crude oil existed in the region： complete distribution of normal paraffins series of high abundance; abundant 25-norhopane series was measured by GC/MS analysis with high absolute concentration. So, the phenomena proved that the crude oil of Guantao Formation was infused twice at least.
出处
《地质学刊》
CAS
2008年第3期161-164,共4页
Journal of Geology
基金
国家"十五"重点科技攻关项目(编号2001BA605A0-2-03-01)资助
关键词
生物降解
二次充注
渤中凹陷
渤海湾
Biological degradation
Twice infusing
Bozhong depression
Bohai bay
