中国东北盆地群白垩纪末构造反转特征  

Characteristics of late cretaceous tectonic inversion for China Northeast Basin group

作　　者：尚尧 陈均亮[2] 林春华[2] 范立国 SHANG Yao;CHEN Junliang;LIN Chunhua;FAN Liguo(No.6 Oil Production Plant of Changqing Oilfield Company,Xi’an 710000, China;Exploration and Development Research Institute of Daqing Oilfield Co Ltd.,Daqing 163712,China;Daqing No.1 Geophysical Exploration Company of BGP,CNPC,Daqing 163357,China)

机构地区：[1]长庆油田分公司第六采油厂,陕西西安710000 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]中油集团东方地球物理公司大庆物探一公司,黑龙江大庆163357

出　　处：《大庆石油地质与开发》2021年第4期26-31,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重大科技专项“大庆油气持续有效发展关键技术研究与应用”(2016E-02)。

摘　　要：为了搞清中国东北盆地群晚期构造变形特征,通过二维地震剖面的解释、钻井和野外露头资料分析,结合东北盆地群的构造样式和演化机制分析,对中国东北盆地群白垩纪末构造变形进行了研究。研究结果表明:白垩纪末期由于阿穆利雅地块与锡霍特-阿林岛弧发生碰撞,对东北盆地群产生了近东西向的挤压作用;在该挤压作用下,东北盆地群表现为近东西向缩短,构造格局发生了性质上的变化,形成了一系列反转构造,该期构造反转奠定了东北盆地群现今的构造格局;在地震剖面上削截特征和逆断层活动明显,变形均集中于先存构造发育处且受先存断裂的控制。总体上东北盆地群晚期构造反转强度自西北向东南变大,具有“东南强、西北弱”的特点。In order to make clear of the characteristics of the deformed late-stage structures in China Northeast Basin Group,with the help of 2D seismic section interpretation and the analyzed data of the drilling and outcrop,and integrated with the analyses of the tectonic pattern and inversion mechanism of the group,the tectonic deformation at the late stage of Cretaceous for China Northeast Basin Group is researched.The results show that during this period,due to the collision between Amuliya Block and Sikhote-Alin island arc,the near EW compression occurred for the group;under the action of this compression,Northeast Basin Group was shortened in the direction of near EW,and the structural framework changed in nature,thus a series of inverted tectonics were formed,so the structural inversion at this period laid the present tectonic pattern of Northeast Basin Group;in the seismic section,the truncation feature and reverse fault activities are obvious and all the deformation are concentrated in the pre-existed well-developed tectonics and furthermore controlled by the pre-existed faults.Generally,the inversed intensity decreases from southeast to northwest and is characterized by“strong in the southeast and weak in the northwest”.

关 键 词：东北盆地群 白垩纪末 白垩系 挤压应力 构造反转 

分 类 号：TE121.2[石油与天然气工程—油气勘探]