The new finding of two beds quartzitic conglomerate in the Ertix piedmont is sedimentary response with Altay nappe structure.

在额尔齐斯带新发现两套石英质砾岩，是阿尔泰推覆构造的沉积响应。

It is proved that the anti-collapse function of the treating chemical in fluid kerite in piedmont drilling is more and more obvious, and the application is more and more widely.

沥青类处理剂在钻井中的防塌作用越来越重要,应用越来越广泛,但由于其基质沥青成分的复由于各种改手段的应用,使沥青类处理剂的室内评价指标与现场应用效果越来越难以统一。