全文快速搜索:          
引用本文:刘 培1,2 蒋有录1 郝建光1,2 郭富欣1. 渤海湾盆地歧口凹陷主要生烃期断层活动与新近系油气富集关系[J]. 中国地质, 2013, 40(5): 1474-1483.
LIU Pei1,2, JIANG You-lu1, HAO Jian-guang1,2, GUO Fu-xin1. The relationship between the fault activity and the Neogene hydrocarbon enrichment during the main hydrocarbon generation period in Qikou Sag of Bohai Bay Basin[J]. Geology in China, 2013, 40(5): 1474-1483(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1739次   下载 2271 本文二维码信息
码上扫一扫!
分享到: 微信 更多
渤海湾盆地歧口凹陷主要生烃期断层活动与新近系油气富集关系
刘 培1,2 蒋有录1 郝建光1,2 郭富欣11,2
1.中国石油大学(华东)地球科学与技术学院,山东 青岛 266580;2.中海石油(中国)有限公司深圳分公司研究院,广东 广州 510240
摘要:
提要:基于烃源岩热演化及生烃期、断层活动差异性及其定量评价等综合分析,对渤海湾盆地歧口凹陷生烃期断层活动差异性与新近系油气富集关系进行了研究。结果表明,研究区主力烃源岩大量生烃的新近纪至第四纪时期,断层活动差异类型可分为早盛晚衰型、渐盛转衰型、渐衰转盛型、早衰晚盛型、稳定活动型五种,差异系数(FDC)能较好地反映断层活动差异与新近系油气富集的关系。综合明化镇期断层活动速率及差异系数将断层控油级别分为Ⅰ、Ⅱ、Ⅲ类,其中断层活动速率及差异系数相对较大的Ⅰ、Ⅱ类断层控制的有利圈闭油气较为富集;而断层活动速率及差异系数较小的Ⅲ类断层控制的圈闭油气富集程度差,断层活动速率控制油气运移规模,差异系数控制油气富集程度。
关键词:  断层活动  油气富集  生烃期  新近系  歧口凹陷  渤海湾盆地
DOI:
分类号:
基金项目:国家油气重大专项课题(2011ZX05006-003)资助。
The relationship between the fault activity and the Neogene hydrocarbon enrichment during the main hydrocarbon generation period in Qikou Sag of Bohai Bay Basin
LIU Pei1,2, JIANG You-lu1, HAO Jian-guang1,2, GUO Fu-xin11,2
1.School of Geosciences, China University of Petroleum (East China), Qingdao 266580, Shandong, China;2.Reseorch Institute of Shenzhen Branch of CNOOC Ltd., Guangzhou 510240, Gaungdong, China
Abstract:
Abstract:Based on a comprehensive analysis of the generation characteristics of source rocks as well as the difference and the quantitative evaluation of fault activity, the authors studied the relationship between the difference of fault activity and the Neogene hydrocarbon enrichment during the hydrocarbon generation period in Qikou Sag of Bohai Bay Basin. The results show that the fault activity differences during the main hydrocarbon generating periods from Neogene to the present can be divided into five categories, i.e., the early-acted-late-declined type, the gradually-acted-turned declined type, the gradually-declined-turned acted type, the early declined-late acted type and the acted stable type. The relationship between the difference of fault activity and the Neogene hydrocarbon enrichment can be revealed by the fault activity difference coefficient (FDC). According to the fault activity rate in the phase of the Minghuazhen Formation and the fault activity difference coefficient,the faults are divided into 3 types, namely Ⅰ, Ⅱ and Ⅲ. Hydrocarbon is mainly concentrated in the favorable traps controlled by type Ⅰand type Ⅱ faults whose activity rate and FDC are relatively high. The enrichment of oil and gas is poor in the traps controlled by type Ⅲ faults whose activity rate and FDC are relatively low. The scale of oil and gas migration is controlled by fault activity rate, while the extent of hydrocarbon enrichment is controlled by FDC.
Key words:  fault activity  hydrocarbon enrichment  hydrocarbon generation period  Neogene  Qikou Sag  Bohai Bay Basin