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本文通过分析SP44频繁作业的情况及作业原因,表明由于该井存在大井斜角造成造斜点处频繁杆断作业,影响油井的正常生产;在上述认识基础上采用静力学和考虑碰撞瞬态动力学方法分析抽油杆的运动特征,分析表明斜井中的螺杆泵抽油杆在弯曲载荷作用下不断与油管内部碰撞摩擦是造成杆柱失效的主要原因;同时生产实践也表明在斜井中抽油机井比螺杆泵要稳定。综合上述认识,SP44进行螺杆泵转抽油机的采油方式转变,目前运行良好,因此建议斜井采用抽油机生产。
This paper analyzes the SP44 frequent operations and operating causes, indicating that due to the presence of large wells inclined well at the beating point at the frequent pole off operations, affecting the normal production wells; based on the above understanding of the use of static and consider the transient transient power The analysis of the movement characteristics of the sucker rod shows that the main reason that the sucker rod in the inclined shaft continuously collides with the internal friction of the tubing under the bending load is the failure of the rod; Drilling wells than the screw pump to be stable. Based on the above understanding, SP44 screw pump pumping unit oil production changes, is currently running well, it is proposed inclined shaft pumping unit production.