长岭断陷大安断裂正反转构造成因机制探讨  

A probing of the cause mechanism in positive reverse structure,DaAn fault,Changlin fault depression

作　　者：程建[1] 江兴歌[1] 韦庆亮 刘运黎[1] 陆建林[1] 左宗鑫 

机构地区：[1]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126

出　　处：《内蒙古石油化工》2014年第15期1-4,共4页Inner Mongolia Petrochemical Industry

基　　金：中石化无锡石油地质研究所所控基金项目(编号:WXSK-2012-9)资助

摘　　要：大安断裂是松辽盆地南部长岭断陷内的典型正反转构造。为探讨大安断裂正反转构造成因机制,本文主要采用地震解释方法,分析大安断裂正反转构造形态特征,发育、发展过程,及先存构造对正反转构造演化的控制作用。分析认为,大安断裂正反转构造在动力学机制上属于"主动反转构造",在形成机制上属断层型反转构造,先存构造的发育、发展决定了正反转构造的演化。在大安断裂正反转构造前期拉张下沉过程中发育了沙河子组、火石岭组优质烃源岩,在其后期挤压隆升时,形成了一系列构造圈闭,并与油气大量生成运气相匹配形成了油气藏,证实了大安正反转构造与油气藏的密切联系。Daan fault is a typical ＂Positive lower and Opposite Upper＂ pattern positive reverse structure which developed in Changling fault-depression,southern Songliao basin. For the purpose of the dynamic mechanism of the Daan reverse structure,the seismic-interpretation was used as the main method to analyzing the characteristics,developing and how the pre-structures to control the developing of Daan positive reverse structure. As a consequence, in terms of the dynamic mechanism,Daan fault belongs to ＂positive inversion structure＂,and ,in terms of formation mechanism ,it belongs to fault pattern of inversion structure. The pre-structures decided the developing and evolution of the Daan positive reverse structure. During the depression rifting of early stage of Daan fault positive reverse structure,superior source rock developed in Shahezi formation,Huoshilin formation,at the last stage of compressing uplift,it developed a series of structural traps matched with generating of abundance petroleum and finally developed hydrocarbon reservoir,that was confirmed the relationship between the hydrocarbon reservoir and the Daan positive reverse structure.

关 键 词：松辽盆地 长岭断陷 大安断裂 正反转构造 成因机制 

分 类 号：P618.310.1[天文地球—矿床学]