随着我国油气田的开发 ,深井数量不断增加 ,由深井上部大直径井段机械钻速偏低引发的问题越来越引起了广泛的关注。其根本原因在于钻井设备、钻头、钻具与大直径井眼的钻井工艺不相适应。现文提出了解决这些问题的基本思路和措施 ,对于提高深井上部井段机械钻速有一定的意义。 With the development of China’s oil and gas fields, the number of deep wells has been increasing. The problem caused by the low penetration rate of large-diameter well sections in the upper part of deep wells has drawn more and more attention. The fundamental reason is that drilling equipment, drill bits and drilling tools are not suitable for the drilling process of large diameter boreholes. Now put forward to solve these problems of the basic ideas and measures for improving the upper section of deep well ROP has some significance.