多种方法确定单井中的地层重复——以吐鲁番—哈密盆地鄯科1井三叠系为例

鄯科 1井是吐鲁番—哈密盆地台北凹陷首次钻穿三叠系的一口科学探索井 ,并首次在三叠系发现轻质油流。文内以鄯科 1井为例 ,运用孢粉组合、岩性组合、地震剖面、倾角测井、无机元素、地球化学等多种方法从不同侧面分析了鄯科 1井三叠系内部地层重复的现象 ,这些方法有机的结合和相互的补充打破了单一方法进行地层划分的旧模式 ,初步进行了多方法交互使用进行地质分层的尝试 ,从而有效地消除了地层划分与对比中的多解性 ,使地层划分更可靠 ,相信这些方法的交互使用在其他地区和单井的地层划分对比中也同样有较好的使用价值

IDENTIFYING SINGLE-WELL REPETITION OF BEDS BY USING SEVERAL METHODS--AN EXAMPLE OF TRIASSIC IN SHANKE-1, TURPAN-HAMI BASIN, XINJIANG

Shanke 1 is a scientific research well which drilled out Triassic first in Taibei Depression, Turpa-Hami (Tuha) Basin. As an example, repetition of the Triassic beds in the borehole Shanke 1 has been identified by using several methods, such as sporopollen assemblages, lithological associations, seismic sections, dipmeter logging, inorganic element analysis and geochemistry. A combination of these methods may replace the old model of stratigraphic division by using a single method, and can eliminate the multiple answers and increase the accuracy in stratigraphic division. It is believed that the use of several methods is also helpful to single well stratigraphic correlation in other areas.