Field operation shows that, by using the hydrodynamic propulsor, not only the penetration rate is increased, the vibration of the bit and drill stem is reduced as well, thereby the service life of the bit is extended.

• 1995-1998年井下液力推进器在大港油田等地区不同区块20余口井上施工的实践证明，使用这种推进器不但可以提高机械钻速，而且减轻了钻头和钻杆的振动，进而延长了钻头寿命。