摘要
河控三角洲前缘砂体是河控三角洲沉积体系中沉积最活跃的部分,也是我国陆相盆地中重要的储集体之一。河控三角洲前缘水下分流河道与河口坝之间相互影响,其形成演化可分为三个阶段。平面上形成演化造成垂向上沉积特征的差异,按所处位置不同和测井曲线形态差异,将三角洲前缘垂向沉积特征划分为五类:单一水下分流河道、上水下分流河道下河口坝;上河口坝下水下分流河道;孤立式河口坝区和叠加式河口坝区。以现代三角洲研究和沉积模式为指导,对永安镇油田永三断块三角洲前缘砂体进行了解剖,确定了水下分流河道与河口坝之间的组合关系及平面分布形态。
The front sand of fluvial induced delta front is the most active deposition in the delta facies,and also one of the most important reservoir in our terrestrial basin. The distributary channel and mouth bar in the delta front interact each other,and its evolution may be classified into three stages. The planar evolution may result in the vertical depositional differences,and according to the depositional difference,location and well logging curves,the vertical depositional in the delta front may be divided into 5 types: the single distributary channel,upper distributary bar,upper bar distributary channel,isolated bar and superimposed bar. Based on the guidance of modern delta study and depositional mode,the delta front sand in Sha II member of Yonganzhen oilfield is analyzed thoroughly to ascertain the combination relationship of distributary channel and mouth bar,as well as the planar distribution.
出处
《新疆石油天然气》
CAS
2015年第1期1-4,111,共4页
Xinjiang Oil & Gas
基金
国家重大科技专项"胜利油田特高含水期提高采收率技术"(2011ZX05011)
关键词
三角洲前缘
水下分流河道
河口坝
永安镇油田
Delta front
Underwater distributary channel
Mouth bar
Yonganzhen oilfield
