馆陶组底部的砂砾岩体作为新近系油藏的重要输导通道和良好储层,但是鉴于直接资料少、研究少,对其成因及分布认识不清,制约了新近系的油气勘探开发.依据地质录井、测井、地震资料,对砂砾岩体的识别方法、电性响应、物源进行研究,在此基础上对研究层段沉积相特征进行系统分析.结果表明:该套砂砾岩体具有较为明显的测井响应和地震反射特征,可采取定性和定量指标对其进行有效识别;砂砾岩体岩性可以细分为砾岩、砾状砂岩、含砾不等粒砂岩、细砂岩、粉砂岩和泥质粉砂岩,并通过电性响应进行有效区分;物源供应主要来自研究区的南部和东部,西部物源相对较远;研究区砂砾岩体属于辫状河沉积,发育有心滩、河道充填、道间滩地、道间洼地4种微相.%Glutenite at the bottom of the Guantao Formation are important migration pathways and good reservoirs of Neogene reservoirs. Due to the lack of direct data and related research, however,its cause and distribution have remained unclear, which restricts further oil and gas exploration and development.Aiming at this problem,based on mud logging, well logging and seismic data,this paper mainly focuses on the identification method,electrical responses and the origin of the glutenite. The characteristics of the sedimentary facies of the study section were first systematically analyzed;and then some conclusions were drawn. Firstly,logging responses and seismic reflection of the glutenite are apparent,and can be effectively identified using qualitative and quantitative indicators. Secondly,the glutenite can be subdivided into five lithological types,including conglomerate, conglomeratic sandstone, conglomeratic anisometric sandstone, fine sandstone, and siltstone and politic silt-stone,which can be recognized using the glutenite's electrical responses. Thirdly, when glutenite deposites, the supply of the material is mainly from the south and the east,while the western originis relatively remote. Lastly,it is considered that glutenite in this area is braided river deposits,which can be further subdivided into four types of microfacies:channel depos-its,diara,overbank origin and flood plain.
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