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.

青类处理剂在山前钻井中的防塌作越来越重,越来越广,但由于其青成分的复杂性及由于各种改性手段的,使青类处理剂的室内评价指标与现场效果越来越难以统一。