摘要
依据钻井、地球化学和油藏分析等资料,通过济阳坳陷断层-扇体组合样式和不同断层-扇体组合样式地震泵作用效率差异的分析,对济阳坳陷地震泵作用与新近系大油田高效形成进行研究。结果表明:济阳坳陷断层-扇体配置主要形成独立断层型、断层-扇体线接触型和断层-扇体面接触型3种组合样式;在地震作用开启及高压→浮力转换驱动下,油气沿断层-扇体线接触型组合呈'活塞式'运移充注,地震泵作用效率高,独立断层型和断层-扇体面接触型组合地震泵作用效率低;济阳坳陷沾化地区普遍发育断层-扇体线接触型组合,其主要成藏期、地震泵作用期与新近系大型披覆构造圈闭定型期'三期'良好耦合,约2 Ma高效形成了孤岛油田等一批新近系亿吨级油田。
Based on drilling, geochemical and reservoir analysis data, the relationship between the seismic pumping and the big oilfield formation of Neogene in Jiyang Depression was studied through the analysis of fault-fan configuration styles and their differences in seismic pumping efficiency in the depression. The results show that three fauh-fan configuration styles include independent fault type, fan-fauh line contact type and fan-fault surface contact type. Driven by the conversion of high pressure to buoyancy, oil and gas migrate and infill-inject like ＇ Piston＇ along the fan-fauh line contact type of source fault when the seismic pumping occurrs. Hydrocarbon accumulation efficiency of ＇ Piston＇ migration is the highest pattern. Independent fault type and fan-fault surface contact type of source fault are inefficient vertical migration patterns. The good coupling of major accumulation period, seismic pumping action period and large drape structures formation period account for the formation of million-ton Neogene oiffields such as Gudao Oilfield, Gudong Oilfield and Chengdao Oilfield in Zhanhua area in 2 Ma.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第2期32-37,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家重大油气专项(2011ZX05006)
关键词
济阳坳陷
断-扇配置
新近系
地震泵作用
高效成藏
Jiyang Depression
fault-fan configuration
Neogene
seismic pumping
high-efficiency hydrocarbon accumulation
