柴西地区英雄岭构造带构造特征差异及控制因素  

Differences in structural characteristics and control factors of Yingxiong Range structural belt in the western Qaidam Basin

作　　者：邵绪鹏 管树巍[1] 靳久强[1] 沈亚 孟庆洋[1] 王丽宁[1] 王鹏[3] SHAO Xupeng;GUAN Shuwei;JIN Jiuqiang;SHEN Ya;MENG Qingyang;WANG Lining;WANG Peng(PetroChina Research Institute of Petroleum Exploration ＆ Development,Beijing City,100083,China;Research Institute,Bureau of Geophysical Prospecting INC.,China National Petroleum Corporation,Zhuozhou City,Hebei Province,072751,China;Qinghai Oilfield Company,PetroChina,Dunhuang City,Gansu Province,736202,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油东方地球物理公司研究院,河北涿州072751 [3]中国石油青海油田公司,甘肃敦煌736202

出　　处：《油气地质与采收率》2018年第4期67-72,共6页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"前陆冲断带及复杂构造区地质演化过程;深层结构与储层特征"(2016ZX05003-001);国家自然科学基金项目"断层转折褶皱作用的参数空间及其对应的力学机制与预测模型"(41472176);中国石油天然气股份有限公司重大科技专项"高原咸化湖盆油气地质理论深化认识"(2016E-0101)

摘　　要：利用最新采集的地震、钻井等资料,结合构造物理模拟实验,对柴达木盆地西部地区(简称柴西地区)英雄岭构造带的构造特征差异及控制因素进行分析。结果表明:柴西英雄岭构造带具有东西分段、南北分带、深浅分层的构造特征;下干柴沟组上段沉积时期是英雄岭构造带构造变形的关键时期,受先存的古构造正断层的影响,在该时期沉积的暗色泥岩、膏岩盐等软弱岩层的不均衡分布是控制英雄岭构造带构造特征差异的因素。古近纪,阿尔金断裂开始活动,英雄岭构造带在弱伸展构造环境下发育正断层,控制暗色泥岩、膏岩盐等软弱岩层的发育;新近纪,东昆仑断裂开始活动,柴西英雄岭构造带在强挤压构造环境下形成现今的正反转构造特征。Using the newest acquired seismic and drilling data,combined with physical analogue modeling,the differencesin structural characteristics and control factors of Yingxiong Range structural belt in the western Qaidam Basin were analyzed.The results indicate that Yingxiong Range structural belt of the western Qaidam Basin is characterized by“the westeastsegmentation,the north-south zonation and the vertical stratification”. The sedimentary period of the Eocene E3^2xg wasthe key period of structure deformation of Yingxiong Range structural belt of the western Qaidam Basin. As affected by thenormal faults in the pre-existing paleo-structure,the uneven distribution of flexible or weak rock such as the dark mudstone and gypsum rock in that period were the main factors controlling the difference of structural characteristics of Yingxiong Range structural belt of the western Qaidam Basin. During Paleogene,the Altyn Tagh Fault began to function,normalfaults developed in Yingxiong Range structural belt of the western Qaidam Basin under the weak extensional tectonic setting,which controlled the development of flexible or weak rock such as the dark mudstone and gypsum rock. During Neogene,the Eastern Kunlun Fault began to function,and the present characteristics of“positive inversion structure”wereformed under the strong compressive tectonic setting in Yingxiong Range structural belt of the western Qaidam Basin.

关 键 词：构造特征 构造变形 构造物理 模拟实验 正反转构造 柴达木盆地 

分 类 号：TE121.2[石油与天然气工程—油气勘探]