井下动力钻具轴承发展现状调研

Research on the development status of bearings for downhole motor

摘要:

井下动力钻具用轴承承受着冲击、摩擦、腐蚀等恶劣工况，其可靠性和寿命对保障钻进的顺利进行至关重要，是井下钻具的关键部件之一。本文对井下动力钻具常用的止推轴承、扶正轴承进行了详细调研，分别对金属滚动轴承、滑动止推轴承和扶正轴承等发展现状、主要特点、发展趋势等进行深入分析，并指出了井下动力轴承的发展与改进方向，可为其选用提供参考。

Abstract:

The bearings of downhole power drilling tool, being one of the key components of drilling tools, bear the impact, friction, corrosion and other harsh working conditions, the reliability and longevity are essential to ensure the smooth drilling. In this paper, the frequently-used thrust bearing and the stabilizing bearing of the downhole drilling tools are studied in detail; the deep analysis on the development status, main characteristics and development trend of metal rolling bearing, sliding thrust bearing and stabilizing bearing are carried out respectively and the development and improvement direction of bearings for downhole power are pointed out, which can be used as reference.