Design and Analysis of a While-Drilling Energy-Harvesting Device Based on Piezoelectric Effect

Jun Zheng, Bin Dou, Zilong Li, Tianyu Wu, Hong Tian and Guodong Cui
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Jun Zheng: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Bin Dou: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Zilong Li: Research Institute No. 717, Shipbuilding Industry Corporation, Wuhan National Laboratory for Optoelectronics, Wuhan 430074, China
Tianyu Wu: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Hong Tian: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
Guodong Cui: Faculty of Engineering, China University of Geosciences, Wuhan 430074, China

Energies, 2021, vol. 14, issue 5, 1-15

Abstract: A while-drilling energy harvesting device is designed in this paper to recovery energy along with the longitudinal vibration of the drill pipes, aiming to serve as a continuous power supply for downhole instruments during the drilling procedure. Radial size of the energy harvesting device is determined through the drilling engineering field experience and geological survey reports. A piezoelectric coupling model based on the selected piezoelectric material was established via COMSOL Multiphysics numerical simulation. The forced vibration was analyzed to determine the piezoelectric patch length range and their best installation positions. Modal analysis and frequency response research indicate that the natural frequency of the piezoelectric cantilever beam increased monotonously with the increase of the piezoelectric patch’ thickness before reaching an inflection point. Moreover, the simulation results imply that the peak voltage of the harvested energy varied in a regional manner with the increase of the piezoelectric patches. When the thickness of the piezoelectric patches was 1.2–1.4 mm, the designed device gained the best energy harvest performance with a peak voltage of 15–40 V. Works in this paper provide theoretical support and design reference for the application of the piezoelectric material in the drilling field.

Keywords: while drilling device; piezoelectric cantilever beam; longitudinal vibration of the drill pipe; energy recovery; modal analysis (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: 2021
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