舞阳凹陷核桃园组核二段砂体沉积模式分析  

The depositional model of the second member of Hetaoyuan formation in Wuyang depression

作　　者：金燕林[1] 杨香华[1] 郭巧珍[1] 严永新[2] 蒋永福[2] 

机构地区：[1]中国地质大学(武汉)资源学院,湖北武汉430074 [2]中国石化河南油田分公司石油勘探开发研究院

出　　处：《石油地质与工程》2010年第6期6-9,共4页Petroleum Geology and Engineering

基　　金：中国石化河南油田分公司项目"舞阳凹陷古地貌及沉积体系分析"研究成果(2008026028);国家自然科学基金项目(40672090)资助

摘　　要：综合地震、钻井与砂体物源定量示踪分析,认为舞阳凹陷核桃园组核二段沉积时期砂体呈现出极不对称分布。针对这种特殊的砂体分布模式,结合区域地质背景及盐岩发育规律,建立了舞阳凹陷核二段的沉积模式:舞阳凹陷核二段处于断层活动高峰期,东北部地层抬升致使北部物源通道受阻,打破了核三段南北物源均衡供给的模式,表现出南部辫状河三角洲砂体规模大且向凹陷中心延伸较远,北部扇三角洲砂体规模小且顺北部边界断裂发育的沉积特点。Based on seismology,drilling and provenance quantita-tive tracing,we presented an extremely asymmetric sand-body distribution of the second member of Hetaoyuan forma-tion in Wuyang depression.Aiming at this special distribu-tion model of sand body,we integrated the regional geolog-ical setting and the development discipline of salt rock,and established the deposition model of the second member of Hetaoyuan formation in Wuyang depression as follows.In The northern boundary fault acted intensively during the deposition of the second member of Hetaoyuan formation,The relevant raising of northern provenance resulted in the barrier of northern source and therefore breaking the balance between southern and northern source during the deposition of the third member.The sandbody scale of braided riverdelta in the south was large and slope advanced relatively far,but the sandbody scale of fan delta near the northern was small and distributed locally along the boundary fault.

关 键 词：舞阳凹陷 核桃园组 核二段 沉积模式 盐岩 

分 类 号：TE111.3[石油与天然气工程—油气勘探]