西安石油大学学报（自然科学版）2017，Vol.32Issue(4)：1-10,10.DOI:10.3969/j.issn.1673-064X.2017.04.001
松辽盆地徐家围子北部宋站地区沙河子组地震相与沉积相解释应用
Seismic Facies and Sedimentary Interpretation of Shahezi Formation in Songzhan Region,Northern Xujiaweizi Fault Depresion, Songliao Basin
摘要
Abstract
According to core observation,well logging and seismic data,the seismic facies and sedimentary interpretation of the Shahezi Formation in Songzhan region,northern Xujiaweizi Fault Depression are studied in detail based on the analysis of sequence division and sedimentary facies types.The results show that the Shahezi Formation can be divided into 4 third-order sequences,and its sedimentary facies mainly include fan delta,braided delta,lacustrine deposits,volcaniclastic deposits and nearshore subaqueous fan.Five categories of seismic facies,including foreset pattern,chaotic pattern,sheet parallel-subparallel pattern,divergent pattern and banded reflection pattern,were recognized according to the external and internal reflection configurations.Some categories can be further divided into several sub-types by different parameters,and they usually represent different sedimentary environment or tectonic background.Moreover,according to the sedimentary interpretation of seismic profiles and the comprehensive analysis of the horizontal distributions of seismic facies and sandstone content,it is held that fan delta is widely developed in the eastern gentle slope during the early sedimentary stage of the Shahezi Formation,and with the expansion of the basin,the east gentle slope is gradually dominated by braided delta;lacustrine facies is locally distributed in the deep faulted belt,and the fan delta is mainly developed in the west steep slope.关键词
地震相/沙河子组/沉积解释/宋站地区/断陷盆地Key words
seismic facies/Shahezi formation/sedimentary interpretation/Songzhan region/graben basin分类
能源科技引用本文复制引用
蔡全升,胡明毅,胡忠贵,王丹,叶颖,张维祯..松辽盆地徐家围子北部宋站地区沙河子组地震相与沉积相解释应用[J].西安石油大学学报（自然科学版）,2017,32(4):1-10,10.基金项目
国家“十三五”重大科技专项(编号:2016ZX05007-002) （编号:2016ZX05007-002）
油气资源与勘探技术教育部重点实验室开放基金项目(编号:K2016-07) （编号:K2016-07）
