元坝地区陆相地层存在可钻性差、结构复杂、岩性变化大等特点,采用常规钻井液钻井机械钻速低,井下复杂情况较多,建井周期长。本文首先从控压钻井技术的概述及发展现状入手,结合元坝地区应用实例分析了其提速、溢流井漏及窄密度窗口等方面的可行性,并结合该地区的特点提出了控压钻井分级解决方案及配置要求。 In the Yuanba area, the terrestrial strata are characterized by poor drillability, complex structure and large changes of lithology. The conventional drilling fluid has low drilling rate, complex underground conditions and long well period. Based on the summary and current development of the controlled-pressure drilling technology, this paper analyzes the feasibility of speed-up, over-flow well leakage and narrow-density window combining with the practical application in the Yuanba area. Combined with the characteristics of this area, Grading solutions and configuration requirements.