ABSTRACT
Research is devoted to the development of formulations detergent for drilling muds in order to reduce the adhesion of clay particles to drill pipes while deepening complex sections of the trajectory of a directional well in the intervals composed of clay rocks. Three types of glycerol-based additive composition with the addition of emulsifiers and water repellents were investigated in various concentrations in the range of 0.5 - 2%. As a result of complex studies which including measurements of the rheological parameters of drilling fluids and bench tests on the model according to the methodology presented in the report, the optimal formulation of detergent was determined. The best results were determined for the additive at a concentration of 1% for all test samples of the presented drilling fluids. The effectiveness of the detergent is estimated in the mass reduction degree of oil seal which formed on the simulator. It amounted to 65-71% in the experiments.
