摘要
采用断裂活动速率方法对郯庐断裂带渤海段主干断裂活动的差异性进行了分析,并探讨了断裂活动差异性对该地区新近系油气成藏的影响。结果表明:渤中段南部和莱州湾段主干断裂晚期活动性较强(>20m/Ma),晚期较强烈的主干断裂活动为油气晚期充注提供了垂向运移的条件,围绕主干断裂分布了一系列新近系油田;而辽东湾段主干断裂晚期活动速率较低(<20m/Ma),不利于油气从古近系烃源岩向上发生垂向运移,因而在新近系尚未有大中型油田发现。
By using a method of faulting rate（FR）,the main differential faulting along Bohai segment of Tanlu Fault Zone（TLFZ） has been analysed,and its impacts on Neogene hydrocarbon accumulation have been discussed.The results indicate that the main faulting is relatively stronger along the southern Bozhong segment and Laizhouwan segment（20 m/Ma）,and that such faulting has created a condition of vertical hydrocarbon migration,with a series of Neogene oilfields around the main segments of TLFZ.By contrast,Liaodongwan segment is relatively weaker in main faulting（20 m/Ma）,which is detrimental to upwardly vertical migration of hydrocarbon from Paleogene source rocks,with no large and major oilfield discovered in Neogene sequence.
出处
《中国海上油气》
CAS
北大核心
2010年第4期237-239,242,共4页
China Offshore Oil and Gas
基金
中海石油(中国)有限公司天津分公司项目(SC06TJ-TQL-004)资助部分研究成果
关键词
郯庐断裂渤海段
断裂活动速率
差异性
新近系
油气成藏
Bohai segment in Tanlu Fault Zone
faulting rate
differential
Neogene
hydrocarbon accumulation
