人们对地层气侵入钻井液、处理剂在某种条件下降解发泡,而引起钻井液性能变化,造成一系列井下复杂情况的发生已具有足够的重视,并采取诸多有效的措施。但对空气侵污钻井液的现象往往注意不够、判断不准、采取措施不当,造成材料浪费,甚至会引起井下复杂情况的发生。本文仅对空气进入钻井液的方式、空气与地层气污染钻井液的现象及处理方法作简要的介绍。 People invade the drilling fluid by the formation gas and the treatment agent degrades and foams under certain conditions, causing the performance of the drilling fluid to change, causing a series of downhole complicated situations to take enough attention and taking many effective measures. However, the phenomenon of air intrusion drilling fluid often pay insufficient attention, not allowed to judge, to take improper measures, resulting in material waste, and even cause complex downhole. This article only on the way of air into the drilling fluid, air and formation gas contamination of drilling fluid phenomenon and treatment methods are briefly introduced.