螺杆马达

螺杆钻具是一种以钻井液（或压缩气体）为动力的容积式井下动力钻具，钻井液（或压缩气体）由泵泵出，经钻杆流经旁通阀进入马达，在马达进出口处形成一定压差推动马达的转子旋转，并将扭矩和转速通过万向轴和传动轴传递给钻头，从而实现钻井作业。螺杆钻具的性能主要取决于螺杆马达的性能参数。 Downhole motor is a type of positive-displacement downhole motor.After high pressure drilling fluid (or Compressed gases) enters into by-pass valve unit, pushes disc insert closing by-pass hole and allowing all mud to flow to motor, fluid pressure forces rotor to rotate that transfers torque to bit to achieve drilling purpose.螺杆钻具是一种以钻井液（或压缩气体）为动力的容积式井下动力钻具，钻井液（或压缩气体）由泵泵出，经钻杆流经旁通阀进入马达，在马达进出口处形  Downhole motor is a type of positive-displacement downhole motor.After high pressure drilling fluid (or Compressed gases) enters into by-pass valve unit, pushes disc insert closing by-pass hole and allowing all mud to flow to motor, fluid pressure forces rotor to rotate that transfers torque to bit to achieve drilling purpose.