Study on the Influence of Fluid Pulsation on Hydraulic Impactor Performance in Drilling Engineering

The combination of the hydraulic impactor and positive displacement motor (PDM) is becoming more popular in drilling engineering. However, negatives PDM on cannot be ignored. To improve performance technique, influence fluid pulsation from was studied first; then, structure optimized to its impact force; finally, field tests were carried out 2 wells shallow formation. results indicate that fluctuation generated can restrain impactor, force increased by 24.4% 28.6% through optimization design. Field show this technique further efficiency rotating stability polycrystalline diamond compact bit, rate penetration bit footage increase 32.5% 34.6%, respectively. In study, effect inlet using computational dynamics method. This unlike other studies have mostly considered as a steady flow. Furthermore, combine used improved structural optimization.