Fluid-structure interaction simulation of rotary percussion drilling tool

被引：0
|
作者：
Yang Y. [1 ]
Liao H. [1 ]
Niu J. [1 ]
Wang Z. [1 ]
Zhang C. [1 ]
机构：
[1] School of Petroleum Engineering, China University of Petroleum, MOE Key Laboratory of Unconventional Oil & Gas Development, Qingdao, 266580, Shandong
来源：
Shiyou Xuebao/Acta Petrolei Sinica | 2019年 / 40卷 / 06期
关键词：
Fluid-structure interaction; Hydraulic hammer; Impact load characteristics; Percussion drilling; Vibration impact;
D O I：
10.7623/syxb201906009
中图分类号：
学科分类号：
摘要：
Rotary percussion drilling is believed to be an efficient way in deep and ultra-deep well drilling. Currently, the rotary percussion drilling tools are mostly driven by hydraulic energy. However, with the increasing of well depth, the hydraulic energy of drilling fluid loss increases dramatically, and the hydraulic impact device driven by drilling fluid also consumes hydraulic energy to further reduce the effective pressure drop of drilling bit. Therefore, the percussion drilling technology driven by hydraulic energy is restricted for deep and ultra-deep well drilling. Based on the string vibration theory, this paper proposes a new rotary percussion drilling tool driven by the coupling of hydraulic energy and drill string vibration. Through establishing a three dimensional physical model, the fluid-structure interaction method is adopted to obtain the influence laws of device load characteristics from inlet flow, vibration displacement, vibration frequency and inlet & outlet diameter. The results indicate that the dynamic load amplitude of the device is increased with the increasing of flow rate, vibration displacement and frequency, while static load only has relation to flow rate variation. © 2019, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：734 / 739
页数：5
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