深井自动垂直钻具纠斜动力提取机构的动力学仿真与实验研究

Dynamic Simulation and Experimental Investigation on Deep Well Power Extraction Mechanism of Automatic Vertical Drilling Tools Correcting Incline

自动垂直钻井工具工作于深井超常环境压力下,其核心部件液控导向纠斜机构是否能直接可靠地在井下提取纠斜所需的动力是微型液压动力系统产生主动纠斜力、正常工作的保证。结合AMESim对微型液压动力系统的仿真数据,借助ADAMS对纠斜动力提取机构进行仿真分析,对导向套与钻杆之间是否保持相对转动以产生驱动液控导向纠斜机构工作的动力问题进行了深入探讨。并通过实测自动垂直钻具原理样机的导向套与钻杆的扭矩,对ADAMS仿真分析及结果进行了验证。仿真和实验表明,在深井实钻这一工况下,导向套和钻杆之间可以保持相对转速,液控导向纠斜装置正常工作的能量供给可靠,纠斜机构微型液压动力系统工作正常。

The automatic vertical drilling tools work under the deep well supernormal ambient pressure, weather the core component of the hydraulic control steering mechanisms could extract the power needed by anti-deviation in the well or not, is the assurance, which the micro-hydraulic power system could generate the power of driving correcting incline and work regularly. Combined by the simulation data of micro-hydraulic power system with AMESim, and a simulation research on power extraction mechanism of correcting incline had been carried on with ADAMS. The problem that the relative rotation between the steerable sleeve and the drill string was maintained or not, in accord to generate driving power of hydraulic steering and slope correction mechanism, was discussed profound. Furthermore, according to the torque of sleeve and drill string measured on automatic vertical drilling tools prototype, the simulation analysis and results of ADAMS was validated. Indication from simulation and experiment, under the working condition of practical drilling in the deep well, that the relative rotation between the steerable sleeve and the drill string could be maintained, the energy of hydraulic steering mechanism could also be supplied reliably, and the micro-hydraulic power system of correcting incline mechanism would work regularly.