根据钻探技术的历史经验,建议应进行大直径反循环回转钻进井底过程的研究。实践证明,已有的岩心钻或油井钻的井底过程的研究结论,尚不能直接在本领域内应用。本文将阐明这种研究的特殊意义、未来方向、主要内容及其基本方法。 According to the historical experience of drilling technology, it is recommended that large-diameter reverse circulation rotary drilling be studied. Practice has proved that the conclusions of the existing bottom hole process of core drilling or oil well drilling cannot be directly applied in the field. This article will clarify the special significance, future direction, main content and basic methods of this research.