| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: procedure consists in following stages: facilitation of clean flow, in actuating one or several "clean" pumps for pumping clean flow from surface of well into borehole, in pumping mud flow including solid material in liquid carrier, in actuating one or several mud pumps of one or various types in any combination for pumping mud flow from surface of well into borehole and in forming working fluid together with clean flow. Also, number of mud pumps is conditioned with efficiency of each pump below nominal output facilitating increased efficiency of the rest mud pumps to their nominal efficiency at failure of one of mud pumps. ^ EFFECT: raised efficiency of procedure and reliability of device. ^ 36 cl, 12 dwg |
