摘要
根据地震数据、岩心、测井及重矿物等资料,利用EBM盆地模拟系统,模拟南堡凹陷高柳断层的活动速率和古落差,分析高柳断层活动特征及其对沉积的控制。结果表明:高柳断层的活动受南堡凹陷盆地构造演化和区域应力方向转变的联合控制,垂向上呈现"弱—强—弱"的演化趋势,平面上Es1、Ed3x、Ed3s沉积期表现明显的分段活动特征,到Ed2、Ed1和Ng沉积期,分段活动特征消失,活动均一性增强。高柳断层的活动引起南堡凹陷北部沉积中心的迁移,由拾场次凹向南迁移到高柳断层下降盘。高柳断层东段和中段连接部位、高柳断层与柏各庄断层相接部位是陆源碎屑进入凹陷的通道,高柳断层的强烈活动为扇三角洲沉积体系发育提供合适的坡降条件和可容纳空间。高柳断层对沉积体系的空间展布具有重要的控制作用,总体可划分为两种类型,即走向斜坡控砂型和断角控砂型。研究结果可为南堡凹陷构造—沉积综合分析及油气成藏预测提供参考。
According to the seismic data,cores,well logging and heavy mineral data,the activity rate and paleo fall of the Gaoliu fault in the Nanpu sag were quantitatively simulated by use of the EBM software,and then the activity characteristic of the Gaoliu fault and its control on sedimentation were analyzed.The results show that the activity of the Gaoliu fault was jointly controlled by the basin tectonics evolution and the change of region stress direction.In the vertical profile,the Gaoliu fault showed the evolution law of " weak-strong-weak".In the map view,the Gaoliu fault showed the characteristic of segmentation in the Es1,Edx3,Eds3,while the characteristic of segmentation disappeared in the Ed2,Ed1,Ng.The Gaoliu fault controlled the migration of the depocenters in the northern Fushan sag,which migrated from the Shichang sub-sag to the downthrown side of the Gaoliu fault.The joint part of the middle and east parts of the Changliu fault,and the joint part of the Gaoliu and Bogezhuang faults were the passageways of debris resource.The intense activity of the Changliu fault was favor to the development of fan daltas.The Gaoliu fault controlled the spatial distribution of sedimentary systems,which can be divided into two types.The research of the activity of Gaoliu fault and its control over sedimentation may provide reference for the tectonic-sedimentary integrated study and the forecast of petroleum accumulation.
出处
《东北石油大学学报》
CAS
北大核心
2018年第2期51-61,共11页
Journal of Northeast Petroleum University
基金
国家自然科学基金项目(41272122)
国家科技重大专项(2016ZX05006-006-002)
关键词
南堡凹陷
高柳断层
断层活动速率
分段活动性
沉积相
控砂模型
Nanpu sag
Gaoliu fault
fault activity rate
segment activity
sedimentary facies
sand-control model
作者简介
王观宏（1989-）,女,博士,讲师,主要从事层序地层学、构造沉积学方面的研究.
