Experimental study for the process of the borehole thermal reaming by means of the angular plasmatronOleksii Voloshyn, Iryna Potapchuk, Volodymyr Yemelianenko, Mykola Zhovtonoha and Vitalii PertsevyiE3S Web Conf., 109 (2019) 00113DOI: https://doi.org/10.1051/e3sconf/201910900113