Abstract

The operation of a drilling rig top drive system (TDS) in drilling practice at a great depth or during the construction of a drill pipe stand in the case of failure of one of two motors is considered. In the existing kinematic scheme of most domestic and foreign TDSs, the two motors are mechanically rigidly connected to the drive shaft through a gear reduction unit. It is proposed to replace the gearbox with rigid mechanical connections with a double planetary gear reducer and, thereby, ensure the operation of the electric drive with two independent mechanical channels. Such a kinematic scheme with independent mechanical channels makes it possible to provide the drilling rig operation at great depths in the case of failure of one of the drives and when constructing pipes when disassembling the drilling string. Due to a wider range of torque control for each of the two channels, in the case of failure of one of the drives, the proposed scheme implements the indicated operating modes at a reduced speed, avoiding expensive downtime. The static mechanical characteristics of the TDS for the existing and proposed systems are presented. The calculation of the mechanical converter providing the required gear ratios for each of the mechanical channels is performed. The operation of the control system and power distribution unit of two drives is considered.

中文翻译：

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钻机顶部驱动系统的电驱动器

摘要

如果两个电动机之一发生故障，则应考虑在较大深度的钻井作业中或在钻杆架的建造过程中，钻机顶部驱动系统（TDS）的操作。在大多数国内外TDS的现有运动学方案中，两个电机通过齿轮减速器机械地刚性连接到驱动轴。建议用双行星齿轮减速器代替具有刚性机械连接的变速箱，从而确保具有两个独立机械通道的电驱动器的运行。这种具有独立机械通道的运动学方案使得在驱动器之一发生故障的情况下以及在拆卸钻柱时构造管道时，可以在较大深度提供钻机操作。由于针对两个通道中的每个通道的转矩控制范围更广，因此在驱动器之一发生故障的情况下，建议的方案以降低的速度实施所示的工作模式，从而避免了昂贵的停机时间。介绍了现有系统和拟议系统的TDS的静态机械特性。执行机械转换器的计算，以提供每个机械通道所需的齿轮比。考虑两个驱动器的控制系统和配电单元的操作。执行机械转换器的计算，以提供每个机械通道所需的齿轮比。考虑两个驱动器的控制系统和配电单元的操作。执行机械转换器的计算，以提供每个机械通道所需的齿轮比。考虑两个驱动器的控制系统和配电单元的操作。