DEVELOPMENT OF INHIBITING DRILLING SOLUTIONS FOR INCREASING EFFICIENCY OF WELL CONSTRUCTION IN COMPLEX MINING-GEOLOGICAL CONDITIONS

The experience of drilling shows that the use of modern drilling equipment does not always ensure a high quality of well construction in the sections represented by clay rocks. This is probably due to the fact that when selecting and applying drilling fluids, differences in the properties of the clay are not taken into account, and the properties of drilling fluids are selected without taking into account the features of interaction with rocks. Many complications and accidents in the construction of wells in the regions of Western Siberia are due to the presence of highly colloidal wet clays well hydrated and swelling upon contact with the drilling mud, as well as microfractured mudstones prone to screes and landslides in the geological section, which are opened in one dollying, which leads to the deviation of drilling fluid parameters from set values, packing, lowering the mechanical drilling speed, breaking the stability of the barrel, reducing commercial speed of well construction. It is necessary to develop a formulation of highly effec-tive inhibitory drilling mud, the use of which will increase the mechanical speed of drilling, increase the stability of the trunk, reduce cavernousness, improve the technical and economic parameters of well construction in difficult mining and geological conditions, including large deviations from the vertical