Coupling response characteristics of drill string unfreezing by high-frequency excitation

被引：0
|
作者：
Zhang Y. [1 ]
Zheng Z. [1 ]
Chen J. [1 ]
Huang L. [1 ]
Zhang H. [1 ]
Wang Z. [1 ]
Ge Z. [1 ]
机构：
[1] College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2020年 / 41卷 / 12期
关键词：
Coupling model; Excitation unfreezing; Natural frequency; Sticking of drill string; Unfreezing force;
D O I：
10.7623/syxb202012022
中图分类号：
学科分类号：
摘要：
The use of top high-frequency excitation for drill string unfreezing has the advantages of simple operation, high efficiency and low cost, but the effect of unfreezing operation is seriously affected by the complex downhole environment. Combining the unfreezing device with the drill string and considering the impact of environmental factors, this study establishes a coupled vibration model of the unfreezing device and drill string, so as to reveal vibration response characteristics of the system, and the influence characteristics of such factors as the viscosity of drilling fluid, the depth of free point, hole deviation angle, and working parameters of the high-frequency unfreezing device on the unfreezing force at the free point. Additionally, the optimal range of working parameter is determined according to specific working conditions. The research results show that in the unfreezing operation through high-frequency excitation, the influence factors of unfreezing effect are coupled with each other; according to the actual operating environment and drill string structure, the unfreezing effect can be effectively improved by obtaining the optimal operating parameters. © 2020, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
引用
收藏
页码：1697 / 1705
页数：8
相关论文
共 23 条
  • [1] LI Zifeng, Research situation and development trend of string dynamic shock in oil and gas wells, Acta Petrolei Sinica, 40, 5, pp. 604-610, (2019)
  • [2] ZHU Xiaohua, LIU Weiji, Rock breaking and ROP rising mechanism of rotary-percussive drilling technology, Acta Petrolei Sinica, 39, 2, pp. 216-222, (2018)
  • [3] GONZALEZ O J, BERNAT H, MOORE P., The extraction of mud-stuck tubulars using vibratory resonant techniques, (2007)
  • [4] GONZALEZ O J, BERNAT B., Stuck coiled-tubing recovery utilizing surface equipment and methods, (2010)
  • [5] LI Zifeng, LI Jingyuan, ZHAO Jinhai, Et al., Influence of drilling fluid viscosity on drill string longitudinal vibration, Journal of Southwest Petroleum University: Science & Technology Edition, 30, 2, pp. 134-137, (2008)
  • [6] HU Daliang, PENG Jingguo, WANG Xiyong, Et al., Influence of drilling fluid on natural vibration of drill string, Natural Gas Technology, 2, 4, pp. 37-39, (2008)
  • [7] YANG Xiaohong, ZHANG Bangcheng, CHEN Zhaofeng, Mechanical analysis and optimization design of oilfield workover derricks, Petroleum Exploration and Development, 34, 4, pp. 488-492, (2007)
  • [8] LU Ruidian, LI Huaizhong, TANG Pinghan, Et al., An analysis of the impact force of the while-drilling jar bumper and its influencing factors, China Petroleum Machinery, 38, 7, pp. 23-25, (2010)
  • [9] ZHANG Qingsheng, WANG Mule, QI Xinglong, Et al., Research on high-efficiency jarring and unfreezing technology, China Petroleum Machinery, 41, 10, pp. 9-11, (2013)
  • [10] DARVISHPOUR A, SEIFABAD M C, WOOD D A, DARVISHPOUR A, Et al., Wellbore stability analysis to determine the safe mud weight window for sandstone layers, Petroleum Exploration and Development, 46, 5, pp. 974-980, (2019)
123