王龙;梅朝佳;李屹尧;赵静;

• 1:中国地质大学(北京)地球科学与资源学院

• 2:中国石油集团渤海钻探工程有限公司测井分公司

摘要(Abstract)：

为揭示鄂尔多斯盆地奥陶系马家沟组层序地层发育特征及其对油气成藏的影响,结合钻井和野外露头等资料,采用曲线频谱趋势属性分析技术,根据层序地层四分模式划分奥陶系马家沟组层序地层,分析层序地层格架下的油气藏分布和发育规律。结果表明:马家沟组可以分为4个三级层序,SQ1由马一段至马三段构成,SQ2由马四段和马五_(10)至马五_6亚段构成,SQ3由马五_5至五_1亚段构成,SQ4由马六段构成,只在局部残存;每个层序内部的地层叠加形式有3种,分别为海侵、正常海退及强迫型海退成因的沉积;烃源岩和储集层的发育明显受层序格架控制,主要形成于海退阶段,层序SQ4或SQ3顶部的区域不整合面长期遭受风化剥蚀,控制风化壳型储集层的发育。该结果为鄂尔多斯盆地天然气藏的勘探提供指导。

关键词(KeyWords)：鄂尔多斯盆地;马家沟组;层序地层;频谱趋势属性分析;储集层;烃源岩

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05004-002);; 国家自然科学基金项目(41472090,40472065)

作者(Author):王龙;梅朝佳;李屹尧;赵静;

Email:

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