Study on Axial Force of Multi-Stage Fracturing String in Horizontal Wells
In order to investigate packer failures during multi-stage fracturing in horizontal open-hole wells,mechanical model is established according to the working process of multi-stage fracturing.The influence of temperature and pressure changes on packers and tubing string is considered in this model.Case study indicated that force in each packer changes obviously in different fracturing stage; the force on the hanger is large in the whole fracturing process,and it will change direction opposite to the original direction in the last fracturing interval; in a given fracturing interval,the force in the upper packer is much higher than that in the lower packer; due to the restriction of the packers,the axial force distribution of the tubing is not smooth and changes abruptly at packers.Therefore,the pressure bearing capacity of packers should be taken into account during design and operation,and based on which appropriate packers and operation parameters be selected.
Multi-Stage fracturing packer string force
Zhang Hongqiang Gao Baokui Han Xuanzhuo Qin Xing Wang Wei
China University of Petroleum,Beijing,China
国际会议
西安
英文
459-463
2013-07-27（万方平台首次上网日期，不代表论文的发表时间）