With the development of oil and gas exploration and the increase of highly deviated wells and horizontal wells in recent years, the displacement is getting longer and longer for directional well and horizontal well, drifting for blocking is frequent, low one-time success ratio of completion logging affects well construction period. Though the analysis on the causes of blocking in completion logging in some directional and horizontal wells of west and northeast Sichuan, the countermeasures of “strong inhibition-cross linking-wall consolidation” and high-efficient lubrication slug technologies are put forward mainly for drilling fluid to improve one-time success ratio of completion logging. Field application shows that these technical countermeasures offer a new way to solve the blocking in logging.