空心抽油杆螺纹黏结原因分析及预防

Cause Analysis of and Preventative Actions Against Thread Galling of Hollow Sucker Rod

摘要: 介绍了空心抽油杆的螺纹结构、加工工艺和基本使用条件。对出现螺纹黏结的杆头和接箍进行了材料成分和性能分析，对使用现场的相关设备、操作过程进行了追踪检查，指出了空心抽油杆螺纹黏结既与制造质量有关，也与现场应用不当相关。同时对空心抽油杆的螺纹黏结给出了预防措施，并对现行标准的进一步完善提出了相关建议。

Abstract: Described here in the paper are the thread type, processing technology and basic application conditions of the hollow sucker rod.Relevant analyses of chemical composition and properties of the thread-galling rod head and coupling are conducted.And the related field-used equipment and operation process are followed up and checked.As a result, it is identified that thread galling of the hollow sucker rod is not only related to the manufacture quality, but also to the maloperation in the field.Accordingly, preventative actions against the said galling failure are determined, while proposal for further completing prevailing applicable standard is put forward.