D-13井位于南海莺歌海盆地东方构造,属于高温高压井。在钻进过程中钻遇高压地层,提高钻井液密度后发生井漏,引起下部地层流体大量进入井内,造成上漏下喷复杂情况。本文通过对该井井漏的发生和处理经过的叙述,分析原因,总结经验教训、预防措施以及对处理过程的认识。 Well D-13 is located in the eastern part of the Yinggehai Basin in the South China Sea and belongs to the high-temperature and high-pressure well. Drilling in the process of drilling high-pressure formations to increase the drilling fluid density after the occurrence of well leakage, resulting in a large number of lower formation fluid into the well, resulting in the complexity of the situation under the spray. This paper describes the reasons for the occurrence and treatment of the well leakage, analyzes the reasons, summarizes the lessons learned, preventive measures and understanding of the process.