高邮凹陷真武断裂构造演化特征  

Tectonic evolution of Zhenwu fault in Gaoyou sag

作　　者：吴林 束宁凯 陈清华[1] 肖斐[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]胜利油田森诺胜利工程有限公司,山东东营257000

出　　处：《油气地质与采收率》2015年第1期37-41,62,共6页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"煤层气开发技术经济评价"(2009ZX05042-001)

摘　　要：真武断裂是苏北盆地高邮凹陷重要的基底断裂,研究其演化规律对认识高邮凹陷的构造演化特征至关重要。在断裂构造解释的基础上,根据区域应力场状态将真武断裂的构造演化分为挤压、反转和伸展共3个主要时期。挤压期,真武断裂为印支期板块碰撞所形成的逆冲断裂;反转期,真武断裂继承性演化为真1断层和吴1断层,二者的构造演化特征存在差异;伸展期,受真1断层和吴1断层影响,形成真2断层和吴2断层等一系列次级断层,共同组成了真武断裂带和吴堡断裂带。高邮凹陷真武断裂伸展期砂箱模拟实验结果表明,区域拉张应力场和作为基底断裂的真武断裂是高邮凹陷南部边界断裂带构造演化的2个重要因素。Zhenwu fault is an important basement fault in Gaoyou sag,which is crucial to understanding the structural characteristics of Gaoyou sag. Based on the fault interpretation and the regional stress field,the evolution of Zhenwu fault could be divided into three stages:compression stage,inversion stage and extension stage. During the compression stage,Zhenwu fault was a thrust fault formed by the collision of the Indosinian plate;during the inversion stage,Zhenwu fault evolved inherently into Zhen1 fault and Wu1 fault which differ from each other;during the extension stage,a series of secondary faults formed under the influence of Zhen1 fault and Wu1 fault,such us Zhen2 fault and Wu2 fault,which resulted in the formation of Zhenwu fault zones and Wubao fault zones. The results of sandbox experiment modeling Zhenwu fault during the extension stage show that Zhenwu fault,as the basement fault,and regional stress field are the most important two factors that control the evolution of southern boundary fault zones in Gaoyou sag.

关 键 词：构造演化 基底断裂 砂箱模拟实验 真武断裂 高邮凹陷 

分 类 号：TE111.2[石油与天然气工程—油气勘探]