Drilling Localization and Error Analysis of Radial Horizontal Jet Drilling Based on Magnetic Gradient Tensor

Zhongxiang Liu, Minghui Wei, Peng Zhang, Yutao Zhang, Tingtao Lu, Rui Xiong and Changchun Qin
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Zhongxiang Liu: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Minghui Wei: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Peng Zhang: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Yutao Zhang: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Tingtao Lu: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Rui Xiong: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Changchun Qin: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Energies, 2020, vol. 13, issue 19, 1-10

Abstract: To obtain the real-time drilling trajectory of radial horizontal jet drilling (RHJD), a magnetized nozzle localization method based on magnetic gradient tensor (MGT) is proposed. The MGT system consisting of five tri-axial magnetometers, a tri-axial accelerometer, and a tri-axial gyroscope are installed in the casing. The magnetized nozzle is made of a strong magnetic permanent magnet whose position can be obtained by measuring the MGT generated by itself at the measurement point. The simulation and experiment of the localization method are carried out, which show that the method has high accuracy. When the detection distance is 40 m, the error is only 0.07 m, which meets the requirements of engineering practice. The accuracy of the magnetometer, the baseline distance and the magnetization strength of the nozzle are the main factors affecting the localization error. This localization method can meet the requirements of positioning accuracy in practical engineering, which greatly avoids the drilling failure of RHJD and has a wide application prospect.

Keywords: radial horizontal jet drilling; localization; magnetic gradient tensor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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