Link for citation: Tretyak A.Ya., Krivosheev K.V., Bezmolitvenny D.I. Influence of the additive of copper nanoparticles on the properties of drilling fluids. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 7, рр. 43-49. In Rus.

Relevance. Currently, drilling companies affect up to 30 % of productive time to combat differential grabs. The development of drilling fluids that contribute to the reduction of differential tacks is an urgent task. It is known that nanodisperse particles have a positive effect on the technological process of drilling wells, in this regard, the issue of developing nanostructured drilling fluids for drilling companies is in demand. Experimental studies have been carried out at the Department of Oil and Gas Engineering and Technology of the South-Russian State Polytechnic University (Novocherkassk Polytechnic University) and highly inhibited drilling fluids with the addition of nanodispersed copper with a concentration of up to 4 % and a particle size from 40 to 80 nm have been developed at the level of inventions. It has been experimentally established that the addition of nanoparticles of nanodispersed copper to highly inhibited drilling fluids improves rheological, lubricating and anti-seizure performance. Nanodispersed copper particles in the drilling fluid help to reduce the surface tension at the separation of the two phases – drilling column – filtration crust, which helps to reduce the probability of differential tacks. The aim of the purpose of the research is to study the properties of the developed highly inhibited water-based solutions with the addition of nanodispersed copper, as well as to study their rheological, filtration, lubricating and anti-seizure capabilities. Objects: highly inhibited drilling fluids and their main properties. Methods: experimental-analytical method for studying the addition of copper nanoparticles to the properties of the drilling fluid. Results. Laboratory studies of the effect of copper nanoparticle additives on the quality of the drilling fluid were carried out. The effect of dispersed copper nanoparticles on the main parameters of the drilling fluid was established.