南华北盆地谭庄凹陷巴1井下白垩统原油成因及地质意义  

Origin and geological significance of lower Cretaceous crude oil from well Ba1,Tanzhuang Sag,Southern North China Basin

作　　者：白森舒[1] 周小进[1] 倪春华[1] 严永新[2] 蒋永福[2] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214151 [2]中国石油化工股份有限公司河南油田分公司石油勘探开发研究院,河南南阳473132

出　　处：《石油实验地质》2011年第6期634-638,共5页Petroleum Geology & Experiment

基　　金：中国石油化工股份有限公司科技部项目(YPH08077)资助

摘　　要：通过对南华北盆地谭庄凹陷巴1井下白垩统原油的物理和地球化学特征分析,证实该原油属下白垩统的自生自储,由早期遭受降解的低熟油和晚期生成的高熟油混合而成。早期原油的改造主要与晚白垩世的隆升剥蚀和古近纪拉张断层的切割改造有关,晚期大量高成熟油的充注应与古近纪晚期以来下白垩统再次埋藏发生的二次生烃作用和构筑的良好保存条件有关,反映谭庄凹陷下白垩统不仅具有良好的生油潜能,而且具有晚期成藏的有利条件,是南华北地区较现实的勘探层系。The physical and geochemical features of the lower Cretaceous crude oil from well Ba1 of the Tanzhuang Sag of the Southern North China Basin were studied.The above-mentioned crude oil was generated and reserved in the lower Cretaceous itself.It was the mixture of low-maturity oil degraded during the early stage and high-maturity oil generated during the late stage.The transformation of early crude oil was controlled by the uplifting and denudation during the late Cretaceous and the cutting deformation of extensional fault during Paleogene.The charging of high-maturity oil during the late stage was influenced by secondary hydrocarbon generation and preservation condition resulted from the re-burial of the lower Cretaceous since the late Paleogene.The lower Cretaceous of the Tanzhuang Sag was favorable for petroleum generation and preservation.It was one of the realistic targets in the Southern North China Basin.

关 键 词：族组成 碳同位素 生标化合物 成熟度 下白垩统 巴1井 南华北盆地 

分 类 号：TE122.11[石油与天然气工程—油气勘探]