Rock breaking efficiency of the self-propelled swirling jet bit

被引：0
|
作者：
Bi G. [1 ]
Li G. [2 ]
Qu Z. [1 ]
Niu J. [2 ]
Huang Z. [2 ]
Xi Z. [3 ]
Dou L. [1 ]
机构：
[1] School of Petroleum Engineering, Xi'an Shiyou University, Xi'an, 710065, Shaanxi
[2] State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing
[3] Changqing Downhole Technology Company, CNPC Chuanqing Drilling Engineering Company Limited, Xi'an, 710021, Shaanxi
来源：
Bi, Gang (8bigang@163.com) | 2016年 / Science Press卷 / 37期
关键词：
Multi-jet; Rock breaking efficiency; Single jet; Straight-swirling jet; Swirling jet;
D O I：
10.7623/syxb201605012
中图分类号：
学科分类号：
摘要：
To achieve high rock breaking efficiency using the limited discharge rate and increase the extension capacity of radial horizontal wellbore is a key to perform new radial horizontal well technology. The performance of jet bit is the primary problem solved by this key technology. Based on the multi-jet bit, the authors developed a self-propelled swirling jet bit, and analyzed its working principle. Based on experiments, a study was conducted on the rock breaking and drilling laws of jet bits with the changes in time, jet pressure and standoff distance, including self-propelled swirling single-hole jet bit, self-propelled straight-swirling single-hole jet bit, self-propelled swirling multi-hole jet bit and self-propelled straight-swirling multi-hole jet bit. The results indicate that when standoff distance is 9-12 mm and jet pressure is 20-35 MPa, and under the same conditions of standoff distance and jet pressure, the rock breaking efficiency of self-propelled straight-swirling multi-hole jet bit is better than that of self-propelled swirling multi-hole jet bit, and that of self-propelled straight-swirling multi-hole jet bit (1+4 holes) was optimal. The designed new jet bit is able to improve the drilling rate of radial horizontal well. © 2016, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：680 / 687
页数：7
相关论文
共 23 条
  • [1] Dickinson W., Dickinson R.W., Horizontal Radial Drilling System, (1985)
  • [2] Dickinson W., Anderson R.R., Dickinson R.W., The Ultrashort-radius Radial System, (1989)
  • [3] Dickinson W., Dykstra H., Nees J.M., Et al., The Ultrashort Radius Radial System Applied to Thermal Recovery of Heavy Oil, (1992)
  • [4] Dickinson W., Dykstra H., Nordlund R., Et al., Coiled-tubing Radials Placed by Water-jet Drilling: Field Results, Theory, and Practice, (1993)
  • [5] Henry B.M., Horizontal Directional Drilling in Wells
  • [6] Henry B.M., Horizontal Directional Drilling in Wells
  • [7] Michael U., Horizontal Drilling for Oil Recovery
  • [8] Roderick D.M., Lateral Jet Drilling System
  • [9] He Y., Shen Z., Wang R., Experimental study of conical rotatory water jet, Journal of the University of Petroleum, China: Edition of Natural Science, 18, 1, pp. 30-34, (1994)
  • [10] Wang R., Zhou W., Shen Z., Et al., Study on mechanism of rock-breaking by swirling water jet, China Safety Science Journal, 9, pp. 1-5, (1999)
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