螺杆说明书（中英文）.PDF

DOWNHOLE MOTOR MANUAL 1． 前言 1．Introduction 本手册主要介绍螺杆钻具的性能和使用要 This manual mainly introduces downhole motor 求以及注意事项，便于用户更好地了解螺杆钻 property, application and cautions, so as for the 具，结合钻井的需要，选好、用好、维护好钻具， customers to know well our downhole motors, and to 发挥其应有的技术性能，提高钻井经济效益。 do better selection, application, repair and maintenance of downhole motor according to drilling 2． 螺杆钻具工作原理 demand. As a result, our downhole motor may bring into play in its reliable technical function, to enhance 螺杆钻具是以泥浆为动力的一种井下动力钻 drilling economic efficiency. 具。泥浆泵泵出的泥浆液流经旁通阀进入马达， 2 Principle ． 在马达进出口处形成一定压差推动马达的转子 Downhole motor is a kind of downhole dynamic 旋转，并将扭矩和转速通过万向轴和传动轴传递 给钻头。螺杆钻具的性能主要取决于螺杆马达的 drilling tool upon the power of drilling mud. Mud stream 性能参数。 from the outlet of mud pump flows through a by-pass valve into the motor. This stream produces pressure 3． 螺杆钻具的组成 loss at both inlet and outlet of the pump, to push the rotor into rotating, and to transmit the torque and 螺杆钻具由旁通阀、马达、万向轴和传动 speed onto the bit. The downhole motor property 轴 四大总成组成 （如图 1） mainly depends upon its property parameters 3 Constit