Radial jet drilling (RJD) technology is an effective method to enhance oil and gas recovery by penetrating the near-wellbore damage zone, and increasing the drainage radius greatly. Recently, it is identified as a potential technology to develop the geothermal energy. But the extension ability, one of the most critical issues of the RJD, is limited. Because only high pressure flexible hose (HPFH), which is hard to be fed in and subjected to greater resistance by the diverter, can be used as the drill stem to turn from vertical to horizontal in the casing. In this paper, an innovative method to feed in the HPFH by the drag force generated by high velocity flow in narrow annulus is proposed. The drag force model is built, validated, and modified by theoretical and experimental ways. Results show that the resulting drag force, which is equivalent to the self-propelled force, can easily achieve and feed in the HPFH. There is a power law relationship between the drag force and the average velocity; the drag force increases linearly with the length of the narrow annulus. Higher average velocity and 1–1.5 m annulus length are recommended. According to force analysis, the extension ability of the RJD can be doubled theoretically by this method. The results of this paper will greatly promote the development of RJD technology.
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September 2018
Research-Article
A Method to Double the Extension Ability of Radial Jet Drilling Technology
Li Jingbin,
Li Jingbin
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: Lijingbin555@hotmail.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: Lijingbin555@hotmail.com
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Zhang Guangqing,
Zhang Guangqing
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: zhang200800@gmail.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: zhang200800@gmail.com
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Li Gensheng,
Li Gensheng
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: ligs@cup.edu.cn
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: ligs@cup.edu.cn
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Huang Zhongwei,
Huang Zhongwei
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: huangzw@cup.edu.cn
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: huangzw@cup.edu.cn
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Li Weichang
Li Weichang
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: 754434811@qq.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: 754434811@qq.com
Search for other works by this author on:
Li Jingbin
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: Lijingbin555@hotmail.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: Lijingbin555@hotmail.com
Zhang Guangqing
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: zhang200800@gmail.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: zhang200800@gmail.com
Li Gensheng
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: ligs@cup.edu.cn
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: ligs@cup.edu.cn
Huang Zhongwei
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: huangzw@cup.edu.cn
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: huangzw@cup.edu.cn
Li Weichang
State Key Laboratory of Petroleum Resources
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: 754434811@qq.com
and Prospecting,
China University of Petroleum Beijing,
Beijing 102249, China
e-mail: 754434811@qq.com
1Corresponding author.
Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received October 14, 2017; final manuscript received March 26, 2018; published online May 7, 2018. Assoc. Editor: Ray (Zhenhua) Rui.
J. Energy Resour. Technol. Sep 2018, 140(9): 093102 (7 pages)
Published Online: May 7, 2018
Article history
Received:
October 14, 2017
Revised:
March 26, 2018
Citation
Jingbin, L., Guangqing, Z., Gensheng, L., Zhongwei, H., and Weichang, L. (May 7, 2018). "A Method to Double the Extension Ability of Radial Jet Drilling Technology." ASME. J. Energy Resour. Technol. September 2018; 140(9): 093102. https://doi.org/10.1115/1.4039977
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