1.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.

1.沥青类处理前钻井中的防塌作用越来越重要,应用越来越广,但由于其基质沥青成分的复杂及由于各种改手的应用,使沥青类处理的室内评价指标与现场应用效果越来越难以统一。