摘要
朱家墩气藏位于苏北盆地盐城凹陷南洋次凹的深洼带 ,古新统和上白垩统的天然气来自古生界烃源岩。朱家墩构造是被盐 2、盐 3断层夹持的断鼻构造 ,根据天然气运移指标、流体包裹体分析及断层演化特征研究 ,盐 2断层是天然气向上运移的主要通道 ,储集层是侧向运移通道 ,运移方向总体是从下向上、从南向北 ,主要成藏期为盐城组沉积期 (中新世 )。气藏的形成与断层作用密切相关 ,得益于断层活动性减弱。图 4表 2参
The analyses on the formed conditions of Zhujiadun gas pool in Yancheng sag, show that its formation is closely related with faulting,not only with its structural traping actions,more with connecting and sealing functions of faults. After detailed research on gas migration indexes,characteristics of faulting evolution and analysis on hydrocarbon packages etc., these conditions have been acquired, i. e. ,the gas migrating direction is from the lower part to heading up, from the south to northern part totally,the Yan 2 fault provide main passages for gas moving heading up, and the reservoir strata offer passages for natural gas lateral migrating, and hydrocarbon preservation is concerned with weakening functions of fault activity. The formation of the gas pool is relative lately, mainly in deposition period of Yancheng Formation (Miocene).
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2003年第4期5-6,28,共3页
Petroleum Exploration and Development
关键词
苏北盆地
盐城凹陷
朱家墩地区
油气运移
断层演化
天然气成藏
Subei Basin
Yancheng Sag
Zhujiadun area
oil and gas migration
faulting evolution
gas reservoir formation
