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随着深井和超深井的勘探开发比例不断增加,对提高油气钻井速度和质量提出了新的挑战,然而深部地层PDC钻头出现的粘滑振动现象严重制约着机械钻速的提高,在PDC钻头上安装扭力冲击器是目前可以减小或消除该现象的最有效方法。在分析粘滑振动现象的基础上,分析了国内外扭力冲击器的研究进展,按照结构将其分为涡轮驱动类型和钻井液直接驱动类型,并分别论述了其中典型扭力冲击器的工作原理、结构、现场应用和优缺点,并提出了扭力冲击器的发展趋势,为国内早日摆脱国外对该技术的封锁,实现大规模商业应用提供参考。
With the increasing exploration and development ratio of deep and ultra-deep wells, new challenges have been raised for improving the drilling speed and quality of oil and gas. However, the stick-slip vibration phenomenon in the PDC bit of deep formation severely restricts the increase of ROP, The installation of torsional impactor is the most effective way to reduce or eliminate this phenomenon. Based on the analysis of the phenomenon of stick-slip vibration, the research progress of torsional impactor at home and abroad is analyzed. According to the structure, it is divided into the type of turbine drive and the type of direct drilling fluid. The working principle of the typical torsional impactor, Structure, field application, advantages and disadvantages, and put forward the development trend of torsional impactor, providing a reference for the domestic as soon as possible to get rid of the blockade of this technology abroad and realize large-scale commercial application.