准噶尔盆地侏罗系三工河组层序界面结构分析  

Analysis of Interfacial Structure in J1S22 Internal Sequence of Jurassic Sangonghe Formation in Junggar Basin

作　　者：刘豪[1] 王英民[1] 王媛[1] 金武弟[1] 

机构地区：[1]石油大学盆地与油藏研究中心,北京102249

出　　处：《新疆石油地质》2002年第2期127-129,共3页Xinjiang Petroleum Geology

摘　　要：通过对露头、钻井测井和地震资料的研究,认为在准噶尔盆地侏罗系三工河组J1s22砂体之中从反旋回的转折点上发育一侏罗系内部层序界面。该界面的识别标志明显,在露头、钻井、测井以及地震剖面中具有较好的反映。由于J1s22砂体的组合关系在盆地不同部位具有较大的差别,因而导致该界面的表现样式具有极大的差别,主要表现为层序底界具有上下岩性接触关系复杂、沿层地球物理参数变化多端以及界面上下地震反射结构差异较大等特征,因此该界面在全盆范围内非均一性特征突出。而形成该界面非均一性的主控因素为构造活动特别是盆地内的局部构造活动的差异性导致的不同区域可容空间的变化,此外沉积物供给和气候的变化也是主要影响因素之一。The research of outcrop,drilling,well log and seismic data showed that in J 1 s 22 sand body of Jurassic Sangonghe formation in Junggar basin,a Jurassic interior sequence interface that defined as J 1 S 3 was developed on anti-cycle's turning point,with obvious recognition mark and fair responses in outcrop,drilling,well log and seismic profile.Because of bigger differences of assemblage relations of J 1 s 22 sand body in different parts of the basin,extreme differ-ences occurred in the interfacial configuration,mainly showing the characteristics of complicated contact relations be-tween upper and lower lithologic properties in bottom of the sequence,varied geophysical parameters along its strata as well as bigger differences in upper and lower seismic interface reflection structures.The important controlled factor of forming non-homogeneity of this interface within the whole basin could be the fact that differentials of structural move-ment,particularly,those of local structural movements in the whole basin,which lead to variation of containable spaces in the different areas.Also,deposit supply and climatic variation or fluctuation is one of primary affective factors.

关 键 词：三工河组 界面结构 准噶尔盆地 早侏罗世 层序地层学 

分 类 号：P534.52[天文地球—古生物学与地层学] P618.130.2[天文地球—地质学]