【摘要】 钻井水龙头由于结构设计的原因,冲管盘根在钻井过程中不断磨损,特别是在高压泥浆的作用下,盘根密封常常被破坏。分析了冲管密封的原理,建立了有限元模型,计算了不同情况下橡胶盘根和冲管之间的接触压力,提出了延长冲管盘根密封寿命的建议。更多还原

【Abstract】 The wash pipe packing of drilling swivel showed wear-and-tear continually in drilling process due to its structural design.The packing assembly was often torn by high pressure mud.The article analyzed the seal principle of wash pipe,created the finite element model and calculated the contact pressure between the wash pipe and the packing under different circumstances,then put forward improvements to prolong service life of wash pipe and packing assembly.更多还原