构造变换带沉积充填特征与油气分布规律Sedimentary filling features and hydrocarbon distribution rules in structural transfer zone
杨勉,付广,张云峰,王月庆
YANG Mian1,2,FU Guang2,ZHANG Yun-feng2
摘要(Abstract)：
以海拉尔盆地巴彦塔拉构造带为例,通过古地形恢复对构造变换带的沉积充填特征进行了分析,并总结了其油气分布规律。结果表明,沉积物输送及充填过程受控于构造变换带上主断层形成的断阶带与调节带。构造带西部陡坡发育两组断阶带与调节带,沉积物入洼可由扇三角洲快速相变为湖泊沉积体系,形成良好的生储盖组合,是岩性油气藏形成的有利地区;东部缓坡处断阶带与调节带不发育,以辫状三角洲与湖泊沉积体系为主,不利于岩性油气藏的形成。
Taking Bayantala transfer zone in Hailaer Basin as an example,this paper analyzes sedimentary filling features in structural transfer zone through paleotopography restore and summarizes its hydrocarbon distribution rules.Result shows that sediments transportation and filling process is controlled by fault terrace zone and accommodation zone formed by the major fault in structural transfer zone.West steep slope in the transfer zone develops two groups of fault terrace zones and accommodation zones.Sediments entering depression can changes phases rapidly from fan deltaic to lacustrine sedimentary system,forming favorable source rock-reservoir-cap rock combination and being favorable area for lithologic reservoir forming.East mild slope has not much fault terrace zones or accommodation zones,being mainly braided deltaic and lacustrine sedimentary system,and not favorable for lithologic reservoir forming.
关键词(KeyWords)：
构造变换带;巴彦塔拉;沉积充填;油气分布
structural transfer zone;Bayantala;sedimentary filling;hydrocarbon distribution
基金项目(Foundation):
作者(Author):
杨勉,付广,张云峰,王月庆
YANG Mian1,2,FU Guang2,ZHANG Yun-feng2
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