翁望飞,刘池洋,赵红格,王建强,张蓉蓉,陈洪,桂小军

• 1:中国石化江苏油田物探技术研究院
• 2:西北大学大陆动力学国家重点实验室
• 3:中国石化华东分公司

摘要(Abstract)：

鄂尔多斯盆地下白垩统为中生代盆地演化末期最晚沉积的地层,也是自鄂尔多斯盆地发育以来后期遭受剥蚀改造最为强烈的地层,残存范围最小。通过对全盆八百二十余口钻井现存中生代地层厚度及岩性的统计,从中选取了313口井读取声波时差值,采用声波时差和地层对比趋势法相结合进行剥蚀厚度估算,同时利用联井剖面对比法对整个盆地的恢复厚度进行对比验证。在此基础之上,恢复了早白垩世盆地原始沉积厚度,初步探讨了盆地原始沉积面貌,基本确定了盆地原始沉积边界,从而进一步加深了对晚白垩世以来盆地强烈构造变动的认识,对多种能源矿产同盆共存富集规律的研究具一定的启示。

关键词(KeyWords)： 声波时差;泥岩压实曲线;地层剥蚀;厚度恢复;早白垩世;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展规划(973)项目(2003CB214607)资助

作者(Author): 翁望飞,刘池洋,赵红格,王建强,张蓉蓉,陈洪,桂小军

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