lutite

How to solve the logging problem of the fine cuttings drilled by PDC bits has become the focus that has been paid close attention to by the geological logging persons.

如何解决PDC钻头钻进的细碎岩屑录井问题,已成为地质录井界有关人士关注的焦点。

Distinguishing lithologies of the small core samples through measuring their GR values on the ground.;

利用细岩屑地面自然伽马测量值划分岩性

The deposit is controlled by fanlt and stratigraphy,principly bounded to the sheared zone which formed in a sequence of fine lithic tufls and carbonaceous shale in the contact zone between the tuffaceous and the andesitic sequence within Nafirdeib series.

该矿床受构造及地层控制，主要赋存于Ｎａｆｉｒｄｅｉｂ群安山质岩组和凝灰质岩组接触带内一套细粒岩屑凝灰岩和碳质页岩中发育的构造剪切带里。