Ensuring the well bore stability during drilling is a regular task of drilling engineers. In this paper two extensively adopted technical measures at present, ceasing and mud flushing,are discussed.

• 在钻进过程中,确保井壁稳定,是钻井工作者一项经常性任务。文章就目前广泛采用的下套管和泥浆两项措施作了论述。