摘要
依据沉积学基础理论，结合岩心、地震、测井、粒度等资料，对渤南洼陷北部陡坡带沙四上亚段（Es4）～沙三下亚段（Es3^L）砂砾岩沉积相及其展布特征进行了研究。结果表明：砂砾岩具有近源、快速堆积的特征，结构成熟度和成分成熟度较低；砂砾岩主要分布于埕南断层下降盘Es4^13～Es3^L沉积时期形成的近岸水下扇中；扇体平面上具有分带性，垂向上具有分期性，碎屑物质主要来源于北部的埕东凸起；扇体主要受边界断层、古地层、母岩性质等因素控制。
Based on the basic theory of sedimentology and in combination with core observation,3-D seismic data,well logging and particle size analysis data,the conglomerate sedimentary characteristics and sedimentary facies distribution of Esu3-EsL4were studied.The study reveals that sandy conglomerates have the characteristics of near source and fast overlapping,they have low texture maturity and compositional maturity.The sandy conglomerates are mainly distributed in Esu3and EsL4nearshore subaqueous fans and located in downthrown side of Chengnan Fault.The fans have the characteristics of'multi-periods in vertical direction,multi-zones in the plane'.Fragments are originated from the northern Chengdong Bulge.The fans are mainly controlled by boundary fault,palaeostrata,properties of parent rocks and so on.
出处
《石油天然气学报》
CAS
CSCD
2014年第1期10-13,4,共4页
Journal of Oil and Gas Technology
基金
油气资源与勘探技术教育部重点实验室开放基金项目(K2013-14)
关键词
渤南洼陷
砂砾岩
沉积特征
平面展布
主控因素
Bonan Sag
sandy conglomerate
sedimentary characteristics
plane distribution
main controlling factor
