通过大量文献调研及现场生产资料,得出钻井施工质量对气井生产非常重要,而面对复杂地质条件、井下压力剖面变化大、可钻性差的地层,精细化控压钻井技术,MPD(Managed Pressure Drilling),是解决上述问题的一种重要技术,因此作者进一步对精细化控压钻井技术的原理、工艺、分类以及在川渝地区的应用进行了介绍,为精细化控压钻井技术发展提供了较为综合的信息。 Through a large number of literature research and field production data, it is concluded that drilling construction quality is very important for gas well production. However, in the face of complex geological conditions, the downhole pressure profile changes greatly and the drillability is poor, fine controlled pressure drilling technology, MPD Drilling) is an important technology to solve the above problems. Therefore, the author further introduces the principle, technology, classification of fine controlled-pressure drilling technology and its application in the areas of Sichuan and Chongqing, and provides the basis for the development of fine controlled pressure drilling technology More comprehensive information.