The Sheling Formation of the Chaluhe Depression in the Yitong Basin is presented in the early stage of depression, It is largely influenced by fault, The sand thickness and distribution of lateral changes quickly, with the feature of near the source, short-circuiting'. For the Situation of less drilling and uneven distribution , making use of Seismic data about seismic reflection shape and internal structure, combing well point, core logging features to establish correspondence between seismic facies - sedimentary facies, in order to achieve the undrilled areas' sedimentary facies. Studies have shown that Chaluhe Depression can identify three types of seismic facies, have our kinds of sedimentary facies; nearshore subaqueous fan , slump fan and lakes.%伊通盆地岔路河断陷奢岭组处于凹陷发展初期,受断陷影响较大,砂体厚度和分布横向变化快,具典型的“源近流短”沉积特征.针对研究区钻井少且分布不均的情况,利用地震资料进行地震反射外形及内部结构分析.结合地震属性、井点岩心、测井特征,建立地震相—沉积相的对应关系,从而实现对未取芯井段和未钻井地区进行物源及沉积相研究.研究表明岔路河断陷奢岭组可识别3种类型地震相,主要发育近岸水下扇、滑塌扇及湖泊4种沉积相.
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