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为提高单弯螺杆马达在水平井段钻进的稳斜效果,以及提高钻进速度和降低开发成本,本文对单弯螺杆钻具水平钻进时稳斜效果进行数值模拟方法进行了研究。考虑单弯螺杆马达在井底钻进时的复杂情况,建立了钻具组合的简化数值模型,并通过改变近钻头扶正器的外径、马达的弯角、近钻头扶正器和上部扶正器的位置,分析这些参数的改变对钻头处稳斜效果的影响。对仿真结果数据进行对比分析表明,近钻头扶正器外径、马达弯角、近钻头扶正器距离马达弯点位置、扶正到近钻头扶正器的距离等因素对单弯螺杆马达稳斜效果有一定的影响。
In order to improve the stability of the single-bend screw motor in horizontal well drilling, as well as to improve the drilling speed and reduce the development cost, this paper studied the numerical simulation method of the steady-slope effect of single-screw screwdriver horizontal drilling. Considering the complex situation of the single-bend screw motor when drilling in the bottom hole, a simplified numerical model of the drill assembly is established. By changing the outer diameter of the near-center drill centralizer, the motor corner, the near-center drill centralizer and the upper centralizer Position, analyze the effect of these parameters on the steady-state effect at the drill bit. The comparison of simulation results shows that the factors such as the outer diameter of the centralizer, the angle of the motor, the position of the near centralizer from the point of the motor bend, the distance between the centering and the near-center bit stabilizer have a certain effect on the stability of the single-bend screw motor Impact.