中文摘要：

针对深井、超深井钻井机械钻速低的问题，根据调制水力脉冲激发钻头冲击振动的原理，研制了自激振荡式旋冲钻井工具。工具性能参数测试结果显示，工具产生的压力脉动与冲击力随排量的增加而增大。在塔河油田进行了3口井的试验应用，结果表明，自激振荡式旋冲钻井工具研制思路正确可行，与钻头类型、地层岩性、钻井液密度和排量等相关钻井参数具有良好的适应性，机械钻速相对提高31．8％0～80．5％。自激振荡式旋冲钻井工具具有性能稳定、操作简单、使用方便、寿命长、延缓PDC钻头磨损等特点，可推广性较强，为深井、超深井钻井提速提供了一条有效的技术途径。

英文摘要：

Self-excited vibration rotary percussion drilling tool was developed according to the principle of adjusting hydraulic pulse to cause the bit vibration for solving the problem of low penetration rate in deep and ultra-deep wells. The performance parameters of the tool were tested by experiment, the results show that increase of pulsation and impact force generated by the tool with the rise of flow rate. It has been used in three deep and ultra-deep wells in Tahe Oilfield,the idea of self-excited vibration rotary percussion drilling tool is correct and feasible, the drilling tools can adapt a variety of bit types, lithologies,mud densi- ty and flow rates,resulting in the increase of penetration rate of 31.8%-80.5%. The tool features stable performance, simple operation,long service life and deferral of PDC bit wear, and can be popularized as an effective way to increase rate of penetration for deep and ultra-deep well drilling.