Study on Hoist Force Calculation of Hydraulic Lifting System Used in Pressure Balance Workover Rig

Abstract:

Abstract. Pressure balance workover is an advanced downhole operation technique. It can hoist the strings of the tube or put it down under certain pressure. The research on pressure balance workover rig has become a hotspot in both domestic and overseas. Pressure balance workover operation technique has been widely used oversea. At the present time, relevant studies have been developed in China. In this paper, domestic and international technology status is fully analyzed, working principle of hydraulic lifting system is studied, then equivalent calculation model and calculation method of hoist force are put forward, calculation program of hoist force was compiled for the different oil pipe depth, curve and charts changing with the oil pipe depth are given, It provides a theory reference to field operation.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 2448-2451
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.2448
• Online since: August 2011
• Authors: Si Zhu Zhou, Xin Bin Hu, Li Ming Cao, Ke Qiang Zhu, Ben Liu
• Keywords: Hydraulic Lifting System, Working Pressure, Workover Device

References

[1] Guojian Zhao, Youjun Li, Lanming Chen, Technical survey on imported snubbing unit, Oil Field Equipment. 2004, p.104–107.

[2] Jiangpin Fan, Gaofeng Zhang, Xuejia Wang, Status and Development of Snubbing Operation Equipment, Oil Field Equipment, (2008)

[3] Weixi Chen, Yanxu Mu, Yuanqaing Fu, foreign snubbing unit, China Petroleum Machinery

[4] Yongjin Xie, Liming Cao, Study on new snubbing unit, China Petroleum Machinery, (2007)

[5] Yali Ma, Zhijian Huang, Accumulator Practical Technology, Chemical Industry Press, (2007)

[6] Yong Peng, Jinquan Wang, Bing Cai, Heng Wu, Hydraulic control scheme for lifting system of non-well-killing workover device, (2008)