The huge thick mudstone section deposited at the turning position from uprising to subsiding of the base level is the main hydrocarbon source rock and favourable reginal cap rock.
基准面上升到下降的转换位置发育的大套泥岩段是区内的主要烃源层和良好的区域盖层。
Based on the features of mudstone with higher gamma ray than sandstone in sandstone -mudstone section, we can distinguish sandstone reservoir from the drilling profiles with gamma ray log.
在砂泥岩剖面中，泥岩往往比砂岩具有较高的自然伽马值，从而可以利用自然伽马测井将砂岩储层划分出来。
The Xionghuangchang section of the Upper Jurassic series is the principal ore-host strata, composed mainly of dolomite, limestone, mudstone, and siltstone.
赋矿地层为上侏罗统雄黄厂段，主要由白云岩、灰岩、泥岩和粉砂岩组成。
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