The study and correlation of strata to elucidate Earth history on the basis of their lithology, or the nature of the well log response, mineral content, grain size, texture and color of rocks.

根据地层中岩石的岩性、录井反响的性质、所含矿物、颗粒大小、结构与颜色等对地层进行的研究与对比以阐明地球史。

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Hiatus and different thickness of the same formation are two key problems on automatic stratigraphic correlation based on log data from well to well.

地层缺失和厚度不等是基于测井数据进行井间地层自动对比中需要解决的关键问题。

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