The invention discloses a
turbine type hydroscillator for
well drilling. The
turbine type hydroscillator for
well drilling comprises a vibration short section
assembly and a power short section
assembly, a static valve and a movable valve are mounted in the power short section
assembly, a movable valve runner is mounted on the movable valve, a static valve runner is mounted on the static valve, the overflow area of communication of the movable valve runner and the static valve runner is periodically changed, flowing-in
well drilling liquid generates axial simple
harmonic quantity pressure
waves, a
turbine shaft and a turbine rotating drive structure are arranged in the power short section assembly, the top of the turbine shaft is connected with an adjusting
nozzle, the adjusting
nozzle isused for adjusting the well drilling liquid flow flowing through the turbine rotating drive structure to adjust the frequency of the simple
harmonic quantity pressure
waves, the simple
harmonic quantity
pressure wave can be transmitted to the vibration short section assembly, under the effect of the pressure
waves, the vibration short section assembly can achieve continuous axial simple harmonic quantity vibration, back-pressure sticking in the deep well oil base
slurry drilling process can be solved, shortcomings of an existing hydroscillator can be overcome,
static friction force can be converted into movable
friction force, friction resistance can be reduced, the effective
drill pressure can be increased, and mechanical
drill speed can be effectively improved.