In order to solve the problem of environmental safety improvement and the effectiveness of flushing out of well that are being drilled a modernized scheme of drilling rig pumping-circulatory system has been designed. System approach of modernizing separate elements of pumping-circulatory system has been used. The maximum air-tight pumping-circulato...

By Lesya Shkitsa, Teodoziya Yatsyshyn, Mikhaylo Lyakh, Olga Sydorenko