绥滨坳陷地震层序地层识别
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摘要
应用地震层序地层分析方法对绥滨坳陷进行了层序地层识别,在绥滨坳陷选择了7条主干地震测线(剖面)来进行层序地层解释。结果是,发育的8个三级层序(sq1~sq8)在绥滨坳陷主干地震剖面呈横向分布。其中,过滨参1井的南北向269测线(剖面)发育Sq7以下层序;过滨参1井的近东西向44测线(剖面)sq7和sq8层序向上逐渐被削掉;工区南部的近东西向40测线(剖面)sq5到sq8层序向上逐渐被削掉;工区西南部的近南北向256测线(剖面)和工区西北部的近南北向268测线(剖面)各层序之间具有明显的旋回性;工区中部的近东西向68测线(剖面)从sq1到sq8没有明显的层位缺失;工区中部的近南北向280.5测线(剖面)地震发射特征不明显,但仍可进行层序划分和对比。为绥滨坳陷提供了最有利勘探区带。
Method for seismic sequence stratigraphic analysis was used for seismic sequence stratigraphic recognition in Suibin Depression. The major basis for recognition was the termination mode (including toplap, onlap, truncation and downlap) of seismic reflection. It included internal overall reflection characteristics, seismic stratigraphic classification was to determine the limit of stratigraphy. The result shows that 8 Grade III stratigraphies developed in it are laterally distributed in the major seismic profile of Suibin Depression.
Method for seismic sequence stratigraphic analysis was used for seismic sequence stratigraphic recognition in Suibin Depression. The major basis for recognition was the termination mode (including toplap, onlap, truncation and downlap) of seismic reflection. It included internal overall reflection characteristics, seismic stratigraphic classification was to determine the limit of stratigraphy. The result shows that 8 Grade III stratigraphies developed in it are laterally distributed in the major seismic profile of Suibin Depression.
引文
[1]蔡希源,李思田等·陆相盆地高精度层序地层学[M]·北京:地质出版社,2003·
[2]Van Wagoner J C,Posamentier H W,Mithchum R M,et al·层序地层学基础———综述和关键定义[A]·徐怀大译·层序地层学原理———海平面变化综和分析[M]·北京:石油工业出版社,1993·49~55·
[3]Jervy MJ·硅质碎屑岩层序及其地震表示的定量模拟[A]·徐怀大译·层序地层学原理———海平面变化综和分析[M]·北京:石油工业出版社,1993·56~85·
[2]Van Wagoner J C,Posamentier H W,Mithchum R M,et al·层序地层学基础———综述和关键定义[A]·徐怀大译·层序地层学原理———海平面变化综和分析[M]·北京:石油工业出版社,1993·49~55·
[3]Jervy MJ·硅质碎屑岩层序及其地震表示的定量模拟[A]·徐怀大译·层序地层学原理———海平面变化综和分析[M]·北京:石油工业出版社,1993·56~85·
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