黄骅坳陷孔南地区孔一段膏泥岩段的形成模式及层序地层学意义Formation Model and Significance of Sequence Stratigraphy of Gypsum Mudstone Section on Member 1 of Kongdian Formation in Kongnan Area,Huanghua Depression
王欣;周立宏;薛林福;闫青华;王建强;
摘要(Abstract):
黄骅坳陷孔南地区孔一段顶部发育了一套特征的膏泥岩段,为孔店组勘探层系的盖层,对油藏勘探开发具有重要意义,膏泥岩段也是等时地层单元划分的重要标志层。主要以测井资料、录井资料为基础,利用等时地层对比方法,讨论了该区膏泥岩的分布特征、分布模式、沉积环境以及层序地层学意义。综合分析得出,膏泥岩段的分布总体上具有自东向西加厚和由南、北向中间加厚的特征,可分为4种分布模式类型:无膏泥岩沉积类型、自东向西膏泥岩层厚度减薄类型、膏泥岩厚度自沧州一捷地地区向两侧减薄类型、膏泥岩层自西向东减薄尖灭类型,其主要形成环境为暂时性的盐渍洼地和长期发育的盐湖,属高位体系域。
关键词(KeyWords): 膏泥岩段;孔一段;层序;黄骅坳陷;孔南地区
基金项目(Foundation): 国家油气选区专项“大庆探区外围中、新生代断陷盆地群演化与油气远景”(XQ-2004-07-06)
作者(Author): 王欣;周立宏;薛林福;闫青华;王建强;
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