Recently, a new type of jet mill bit (JMB) has been introduced to improve the cutting transport efficiency in horizontal drilling by comminuting cuttings into dust-like particles immediately after the cuttings are generated. To promote the application of JMBs in the field, in this work, JMBs were further improved by including junk slots (JS) all around to allow cuttings to flow through the annulus and thereby prevent sticking from occurring while tripping out. Moreover, numerical and experimental investigations on the feasibility of horizontal drilling with the new type of JMB were carried out. The finite element method was used to analyze the strength of the new type of JMB, and flow field simulation analysis was also performed for JMBs with different sizes of JS. The simulation results indicated that the weakest point of the JMB was located at the bit connection instead of the bit frame, and it was demonstrated that the structural strength of the JMB met the requirements of actual working conditions. The JMB JS had a negative effect on promoting the upward return of cuttings from the bottom of the hole, and the larger the slot sizes were, the more negative the effects. Through a trip-out experiment with the new type of JMB, this paper studied the influence of the slot size on the trip-out process safety. The experimental results indicated that the minimum safe slot width was 60 mm. Finally, in a synthesis of the simulation and experimental results, the reasonable range of slot width was determined to be 60–70 mm; the aforementioned range was the most suitable for the bit based on safety and efficiency considerations. This paper provides guidance for the improvement and application of JMBs.
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September 2019
Research-Article
Numerical and Experimental Investigation on the Feasibility of Horizontal Drilling With a New Type of Jet Mill Bit
Tong Cao,
Tong Cao
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: cupbj@foxmail.com
China University of Petroleum
,Beijing 102249,
China
e-mail: cupbj@foxmail.com
Search for other works by this author on:
Kaian Yu,
Kaian Yu
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: kaianyu@163.com
China University of Petroleum
,Beijing 102249,
China
e-mail: kaianyu@163.com
Search for other works by this author on:
Xuyue Chen,
Xuyue Chen
1
MOE Key Laboratory of Petroleum Engineering,
Beijing 102249,
e-mail: chenxuyue2011@163.com
China University of Petroleum
,Beijing 102249,
China
e-mail: chenxuyue2011@163.com
1Corresponding author.
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Deli Gao,
Deli Gao
MOE Key Laboratory of Petroleum Engineering,
Beijing 102249,
e-mail: gaodeli@cup.edu.cn
China University of Petroleum
,Beijing 102249,
China
e-mail: gaodeli@cup.edu.cn
Search for other works by this author on:
Hongwu Zhu,
Hongwu Zhu
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: zhuhw@cup.edu.cn
China University of Petroleum
,Beijing 102249,
China
e-mail: zhuhw@cup.edu.cn
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YunQing Luo
YunQing Luo
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: 904487147@qq.com
China University of Petroleum
,Beijing 102249,
China
e-mail: 904487147@qq.com
Search for other works by this author on:
Tong Cao
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: cupbj@foxmail.com
China University of Petroleum
,Beijing 102249,
China
e-mail: cupbj@foxmail.com
Kaian Yu
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: kaianyu@163.com
China University of Petroleum
,Beijing 102249,
China
e-mail: kaianyu@163.com
Xuyue Chen
MOE Key Laboratory of Petroleum Engineering,
Beijing 102249,
e-mail: chenxuyue2011@163.com
China University of Petroleum
,Beijing 102249,
China
e-mail: chenxuyue2011@163.com
Deli Gao
MOE Key Laboratory of Petroleum Engineering,
Beijing 102249,
e-mail: gaodeli@cup.edu.cn
China University of Petroleum
,Beijing 102249,
China
e-mail: gaodeli@cup.edu.cn
Hongwu Zhu
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: zhuhw@cup.edu.cn
China University of Petroleum
,Beijing 102249,
China
e-mail: zhuhw@cup.edu.cn
YunQing Luo
College of Mechanical and Transportation Engineering,
Beijing 102249,
e-mail: 904487147@qq.com
China University of Petroleum
,Beijing 102249,
China
e-mail: 904487147@qq.com
1Corresponding author.
Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received October 21, 2018; final manuscript received March 15, 2019; published online April 4, 2019. Assoc. Editor: Gensheng Li.
J. Energy Resour. Technol. Sep 2019, 141(9): 093101 (9 pages)
Published Online: April 4, 2019
Article history
Received:
October 21, 2018
Revision Received:
March 15, 2019
Accepted:
March 16, 2019
Citation
Cao, T., Yu, K., Chen, X., Gao, D., Zhu, H., and Luo, Y. (April 4, 2019). "Numerical and Experimental Investigation on the Feasibility of Horizontal Drilling With a New Type of Jet Mill Bit." ASME. J. Energy Resour. Technol. September 2019; 141(9): 093101. https://doi.org/10.1115/1.4043246
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