Based on existing anti-whirl technologies and the idea of flexible bit, a new kind of flexible anti-whirl PDC bit is designed.

• 回旋是导致PDC钻头失效的主要原因,在研究国内外抗回旋技术的基础上,基于挠性钻头的创新思想,设计了新型挠性抗回旋PDC钻头。