The agitator can improve the effectiveness of bit weight transfer and reduce the friction between drilling tool and borehole through the longitudinal vibration produced by the hydraulic action of drilling fluid, especially in the process of directional drilling to improve the bit weight transfer and reduce torsional vibration. It is a downhole tool used to solve downhole depressurization and improve weight on bit transfer. Smooth weight on bit transfer improves the ability to adjust the bit toolface to reach further target zones. It does not require too much work to adjust the tool face during drilling, keeping the tool face stable and increasing ROP. Particularly suited for horizontal, extended-reach Wells, it can be used in conjunction with MWD, screw, and any bit.

1. The Agitator can effectively reduce the friction between the BHA and the borehole wall and effectively improve the bit weight transfer in sliding drilling.

2. Reduces downhole torsion, reduces lateral vibration and increases ROP.

3. Directional drilling efficiency can be greatly improved, allowing for smoother boreholes.

4. Agitators can be used in vertical Wells, motor guided drilling, rotary guided drilling, extended reach Wells, shale gas reservoir drilling.

5. Can solve the problems of support pressure, slip and poor control of the bit on the tool face. Improve directional drilling tool face control, effectively improve the directional ability.

6. The pressure pulse generated by the hydraulic oscillator does not interfere with the MWD signal and will not damage the MWD instrument.

7. The Agitator has good adaptability to conventional PDC bit and roller cone bit.