Dynamics control of a drilling tool by installing a downhole hydromechanical compensator of pressure fluctuations of drilling fluid into the bottom hole assembly

Abstract

Abstract The fluctuation processes of the drilling tool and the pressure of the drilling fluid resulted from numerous factors of both downhole and wellhead nature lead to many negative consequences. The article describes the impact of non-uniformity of the pressure of the drilling fluid on the drilling process, provides an analytical study of the developed downhole hydromechanical compensator of pressure fluctuations of the drilling fluid installed into the bottom hole assembly. The authors obtained an analytical dependence of the degree of decrease in the amplitude of the pressure fluctuations of the drilling fluid in the compensator on the number of damping stages installed in it. The article describes the results of pilot tests of the compensator, indicating the reliability of the theoretical provisions and the high efficiency of the compensator.