摘要
目前,对沉积盆地地层原始厚度的恢复主要有压实法、压实系数法、脱压实法、镜质体反射率法和地质统计模型法。纵观这些方法,大多数受应用条件、适用范围的限制,难于推广;有的方法虽很精确,但计算过程繁杂,应用起来十分不便;有的方法存在较大的缺陷和较明显的不合理之处。有鉴于此,在系统分析和总结的基础上,以某人工井地层原始厚度恢复结果为蓝本,充分考虑碎屑岩的岩性特征,绘制了地层原始厚度恢复经验图版。运用该图版,只要知道盆地地层现今的观察厚度和岩性,便可直接查到地层的原始厚度。
Abstract
There are several methods of recoverying initial strata thickness such as compaction,coefficient of compaction,dehydrata compaction,vitrinite reflectance and geological statistics.Most of these methods have evident shortcomings and are irrational.So the plate of recoverying initial strata thickness has established by means of the computation of the initial strata in certain artificial well.The initial strata thickness can be obtained by this method through knowing present strata thickness and lithology in wells.This method is proved to be covenient and practical.
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