介绍了煤矿钻井泥浆技术研究与应用的现状和发展,针对大型煤矿钻井工程,指出了泥浆性能指标难以保持、性能参数调整困难、稳定性要求高等技术难点,以及泥包钻头、膨胀缩径等容易出现的问题并提出了解决问题的方法。 The current situation and development of research and application of drilling mud technology in coal mine are introduced. According to the drilling project of large coal mine, it is pointed out that it is difficult to maintain the mud performance index, difficult to adjust the performance parameters and high stability requirements. Problems that arise and put forward solutions to the problem.