Analysis on the lateral vibration of drill string by mass effect of drilling fluid

被引：7
作者：
Yang, Chunxu [1 ,2 ]
Wang, Ruihe [1 ]
Han, Laiju [2 ]
Xue, Qilong [3 ]
机构：
[1] China Univ Petr, Sch Petr Engn, Qingdao, Shandong, Peoples R China
[2] Shengli Petr Engn Co Ltd, Drilling Technol Res Inst, Dongying, Peoples R China
[3] China Univ Geosci, Sch Engn & Technol, Beijing, Peoples R China
来源：
MECHANICAL SCIENCES | 2019年 / 10卷 / 02期
关键词：
DRILLSTRINGS; DYNAMICS;
D O I：
10.5194/ms-10-363-2019
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
It is well known that the influence of the internal and external drilling fluid on the lateral vibration characteristics of drillstring cannot be ignored. In this paper, experiment apparatus for simulating drillstring vibration was established. Hammering method is used to measure drillstring lateral natural vibration frequency when the internal and external drilling fluid is considered. The test results show that the drilling fluid can decrease the natural frequency of the drillstring. Based on the simulation model, considering the influence of the internal and external drilling fluid, an external drilling fluid additional mass coefficient is derived considering the dynamic pressure effect caused by external drilling fluid. Additional mass coefficient can get the result with high precision, which can meet the needs of the project. the simulation results are in good agreement with the test results, and the error is within 2 %. This work provides a useful attempt and lays the foundation for the dynamics of the drill string in the drilling fluid environment.
引用
收藏
页码：363 / 371
页数：9
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