The mechanism that cuttings were removed and transported by drilling fluids at bottomhole were investigated,and some new viewpoint on bottomhole cleaning we...

• 揭示了不同钻头水力结构条件下流场中“旋滚圈”的存在，进而探讨了井底岩屑随液流流动的运移机理，提出了有关井底清岩理论的新观点。