成都理工大学学报（自然科学版）2017，Vol.44Issue(4)：470-477,8.DOI:10.3969/j.issn.1671-9727.2017.04.10
渤东地区新近系“脊-断”耦合控藏模式与定量表征
Study on quantitative characterization of "ridge-fault" coupling reservoir-controlling model in the Neogene of Bodong area, Bohai Sea, China
摘要
Abstract
Lateral and vertical favorable migration pathways of hydrocarbon were analyzed based on abundant drilling data of Bodong area,and the hydrocarbon migration and accumulation patterns of uplift and ramp area were established in this paper.It reveals that buried-hill unconformity and regional sandstone layer are essential transporting ridge channels,the existence of deep ridge is fundamental for the accumulation of Neogene hydrocarbon,and shallow hydrocarbon migration is greatly controlled by the coupling of these ridges and faults.According to the assemble style between traps and faults,the coupling relationship are divided into contact-type and non-contact type,and the former can be further divided into trap-controlling type and non-trap controlling one.It shows that the contact type is favorable for shallow hydrocarbon migration,while those trap-controlling types are the most optimum ones.An effective predict method of hydrocarbon accumulation coefficient is proposed by consideration of size and contact area between the transporting ridges and effective source rocks,trap area along transporting ridges and differential pressure in accordance with available drilling results.Hydrocarbon accumulation coefficient is controlled by fault activity and regional seal thickness,ratio between fault throw and cap rock thickness can be used as a semi-quantitative evaluation index.Statistics show that 0.25 and 1 is the threshold of regional seal of Dongying Formation and the Lower Member of Neogene Minghuazhen Formation,respectively.It shows that the distribution area of transporting ridges is important in the exploration of hydrocarbon,and the shallow layers with well coupled "ridge-fault" are the most favorable shallow exploration targets.关键词
渤东地区/远源/输导脊/“脊-断”耦合/区域盖层/断盖比Key words
Bodong area/remote source/transporting ridge/"ridge-fault" coupling/regional seal/ratio of fault throw and cap rock thickness分类
能源科技引用本文复制引用
刘朋波,官大勇,王昕,王广源,张宏国,赵野..渤东地区新近系“脊-断”耦合控藏模式与定量表征[J].成都理工大学学报（自然科学版）,2017,44(4):470-477,8.基金项目
“十二五”国家科技重大专项(2011ZX05023-001,2011ZX05023-002,2011ZX05023-006). （2011ZX05023-001,2011ZX05023-002,2011ZX05023-006）
