Application Research on Impact Tool Combining PDC Bit

With the development of oil drilling in depth, strata are more ancient and abrasive. The Rate Penetration (ROP) is low conventional methods, Positive Displacement Motor (PDM) matching PDC bits often used to improve it. However, application excessive Weight on Bit (WOB) would easily lead PDM brake, over-standard well inclination, bit wearing aggravation other bad phenomena. Moreover, ROP improving effect limited. As a result, hydraulic jet impact tool was designed use conjunction with integrate advantages vibration shock rotary cutting rock breaking process. exerts dynamic load bit, which improves state at bottom optimize bit’s efficiency as result. Rock mechanism assisted by analyzed, structure working principle introduced, influence structural parameters analyzed based indoor tests. Finally, field applications were carried out using HY-4 wells Saudi Aramco block PX-3 China. effects 61.8% 95% higher than that adjacent respectively. Application analysis result proves combining hard abrasive strata.