基于沉积相反演的砂砾岩体沉积期次精细划分与对比
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“十一五”国家科技项目 ‘国际重大资源态势评价与预测技术开发’(2006BAC18B05)


Fine Division and Correlation of Glutenite Sedimentary Cycles Based On Sedimentary Inversion
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    摘要:

    砂砾岩体一般为多期发育、多次沉积的复合体,其内部结构非常复杂,对砂砾岩体沉积期次的精细划分对比问题,国内外尚无很好的解决先例。本文提出了基于沉积相反演的砂砾岩体沉积期次精细划分方法。文章在岩心观察和描述的基础上,用岩心对成像测井资料进行刻度,建立研究区成像测井模式,并精确地识别出鲍马层序、高密度浊流序列和中扇辫状水道和外扇泥岩等微相层序,建立了研究区沙四上亚段全层位的成像测井的单井相层序,通过沉积相层序分析进行沉积期次精细划分。用成像测井单井相层序标定常规测井曲线,将岩心、成像测井与常规测井的层序界面识别标志有机结合并以相带展布规律作为约束,在由上升半旋回控制的长期旋回内采取由上而下的“递推对比法”和从高级到低级的“层次对比法” 进行连井旋回对比,在一定程度上解决了平面相变问题,建立了研究区的高分辨率层序地层格架。

    Abstract:

    Glutenite sedimentary system has a complex internal compositon owing to the multiple development and deposition. At present, no practicable method is available for the fine division and correlation of glutenite sedimentary cycles at home and abroad. In this paper a new method of fine division and correlation of glutenite sedimentary cycles based on secimentary inversion using the well sedimentary sequence is put forward. We use drill core to portray FMI and then distinguish 4 kinds of sedimentary sequences: Bouma cycle, high density turbidity flow, middle fan channel and outer fan mudstone and build the FMI-sedimentary sequence further. The cycle interfaces are distinguished under the direction of sedimentary sequences. According to standardizing logging curves by FMI, combining cores, FMI and borehole log, and on the basis of distribution regularities of sedimentary facies belts, we use the contrasting method to contrast multi-cross well cycles in the principle :from large scale to small scale,from top to bottom.The areal facies change problem can be perfectly solved with this method.

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李存磊,张金亮,宋明水,史超群,石宁,刘婷.2011.基于沉积相反演的砂砾岩体沉积期次精细划分与对比[J].地质学报,85(6):1008-1018.
Li Cunlei, Zhang Jinliang, Song Mingshui, Shi Chaoqun, Shi Ning, Liu Ting.2011. Fine Division and Correlation of Glutenite Sedimentary Cycles Based On Sedimentary Inversion[J]. Acta Geologica Sinica,85(6):1008-1018.

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  • 收稿日期:2010-06-11
  • 最后修改日期:2011-03-08
  • 录用日期:2011-04-02
  • 在线发布日期: 2011-05-20
  • 出版日期: