牙轮钻头是钻井的重要工具。建国二十五年来,我国生产的牙轮钻头品种日益增多,质量不断提高,最近并已开始生产新型的储油密封轴承牙轮钻头,为不断提高钻井速度,降低钻井成本,加速我国油、气田的勘探开发创造了有利条件。 今年上半年,我们先后收到上海第一石油机械厂生产的9(3/4)″3AZ—M型和9(3/4)″3 AR Tricone bit is an important tool for drilling. Twenty-five years after the founding of the People’s Republic of China, the number of roller cone drill bits produced in China has been increasing and the quality has been continuously raised. Recently, the Company has started to produce new type of oil-sealed sealed roller cone drill bits. In order to continuously improve drilling speed, reduce drilling costs and accelerate oil and gas fields The exploration and development have created favorable conditions. In the first half of this year, we have successively received 9 (3/4) “3AZ-M and 9 (3/4)” 3 AR from Shanghai No. 1 Petroleum Machinery Factory