古水深曲线在测井资料层序地层分析中的应用

层序地层学的精华就是综合应用露头、钻测井和地震资料进行层序地层分析。因此,在缺乏以陆上暴露不整合面为特征的层序界面的湖相沉积中,如何应用测井资料进行层序划分就成为层序地层学研究中一个重要环节。本文以柴达木盆地金达 1井第四系为例,介绍了一种综合利用岩芯、岩屑和电测曲线等测井资料,通过相对古水深曲线的建立,来进行层序地层分析的快速简便的方法。

Application of Paleobathymetric Curve in the Sequence Stratigraphy of Well-logging Data

It is well known that integrated use of outcrop, well-logging and seismic data is the key to sequence stratigraphy. Therefore, how to identify the sequence boundary by well-logging in the lacustrine sediments which are lack in the unconformity is critical step to sequence stratigraphic analysis. With an example of sequencestratigraphy of Quaternary in well Jinda1, Qaidam basin, this paper presents the basic procedures of new approach for a stratigraphic subdivision of well logs into sequences by reconstruction of paleobathymetric curve.