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    Methods and apparatus for driving a means in a drill string while drilling
    2.
    发明授权
    Methods and apparatus for driving a means in a drill string while drilling 失效
    在钻孔时用于驱动钻柱中的装置的方法和装置

    公开(公告)号：US3908770A

    公开(公告)日：1975-09-30

    申请号：US46914774

    申请日：1974-05-13

    Applicant: TEXACO INC

    Inventor： RICHTER JR ALBERT P ,  MCEVERS JR WILLIAM R

    IPC: E21B4/00 ,  E21B4/02 ,  E21B47/16 ,  E21C7/08 ,  E21B3/12

    CPC classification number: E21B47/16 ,  E21B4/00 ,  E21B4/02

    Abstract: A method and at least one mechanism for carrying out the method is disclosed. A method of (1) generating time modulated torque pulses by engaging and disengaging a mud turbine driven rotating torque generator in the bottom of a wellbore, and (2) monitoring the top of the drill string for the torque pulses therein may be practiced by a mud driven turbine inertial wheel for being momentarily and precisely braked or decelerated relative to a drill collar on the lower end of a drill string in a wellbore while drilling for generating the time modulated torque pulses in the drill string for being monitored at the surface. Mechanical, electrical, and fluid operated brakes and a mud turbine driven motor are disclosed for providing power to a motor at the bottom of the drill string or for being intermittently braked rapidly for generating the torque pulses.

    Abstract translation: 公开了一种用于执行该方法的方法和至少一个机构。 （1）通过在井眼的底部接合和分离泥浆涡轮机驱动的旋转扭矩发生器来产生时间调制扭矩脉冲的方法，以及（2）监测钻柱的顶部用于其中的扭矩脉冲的方法可以通过 泥浆驱动的涡轮惯性轮相对于井筒中的钻柱的下端上的钻铤被暂时且精确地制动或减速，同时钻孔以在钻柱中产生时间调制扭矩脉冲以在表面处被监视。 公开了机械，电动和流体驱动的制动器和泥浆涡轮机驱动的电动机，用于向钻柱的底部的电动机提供动力，或者为了产生转矩脉冲而被快速间歇地制动。

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