ENGAGEMENT MODEL OF DOWNHOLE MOTOR AND APPLICATION

KUANG YuChun; ZHANG Cong; WU LongMei; DONG ZongZheng; REN HaiTao

doi:10.16579/j.issn.1001.9669.2017.05.023

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ENGAGEMENT MODEL OF DOWNHOLE MOTOR AND APPLICATION

更新时间：2022-09-22

- ENGAGEMENT MODEL OF DOWNHOLE MOTOR AND APPLICATION
- Journal of Mechanical Strength Vol. 39, Issue 5, Pages: 1132-1137(2017)
- 作者机构：
  
  1. 西南石油大学机电工程学院
  2. 成都九鼎科技(集团)有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.05.023
  CLC：
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KUANG YuChun, ZHANG Cong, WU LongMei, et al. ENGAGEMENT MODEL OF DOWNHOLE MOTOR AND APPLICATION. [J]. 39(5):1132-1137(2017)
DOI：

KUANG YuChun, ZHANG Cong, WU LongMei, et al. ENGAGEMENT MODEL OF DOWNHOLE MOTOR AND APPLICATION. [J]. 39(5):1132-1137(2017) DOI： 10.16579/j.issn.1001.9669.2017.05.023.

摘要

螺杆钻具马达定转子之间的过盈量决定了马达的密封性能并对其机械性能产生重要的影响,确定定转子之间合理的过盈量对提高马达的机械性能具有重要的意义。基于赫兹接触理论,建立了马达定子、转子二维啮合模型,遵循接触力系平衡原理,通过迭代方法得到转子运动的中心轨迹和法向过盈量。通过测量两只具有不同理论过盈量的马达定转子廓形,利用啮合模型得到其计算过盈量,并且与理论过盈量进行对比,结果表明:相较于理论过盈量,计算过盈量的值偏大。同时,对两只钻具进行整机试验,对比其机械性能发现计算过盈量更能合理解释马达的实验结果,并且计算过盈量处于合理的数值时,螺杆钻具马达将获得良好的机械性能。

Abstract

The interference between the rotor and stator has significant effect on the seal and mechanical performance of mudmotor. The suitable interference is significant to improve the performance of downhole motor. Based on the Hertz contact theory,the two-dimensional engagement model of rotor and stator was established. Through the balance theory of contact force system and the iteration method,the center trace of rotor and the normal interference were obtained. The profiles of rotor and stator were acquired through the measurement of two mudmotors which have different theoretical interference,and the calculated interferences were gained through the engagement model of mudmotor. Compared with the theoretical interference,the results show that the calculated interference values are a little larger. Meanwhile,two mudmotors‘ performance tests were conducted and the calculated interference can be more reasonable to explain the motor’s performance compared with the test data. Besides,when the calculated interference was in a range of suitable value,the downhole motor would have good performance.

关键词

螺杆钻具定子转子啮合模型

Keywords

Downhole motorStatorRotorEngagement model

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