The impact assessment of plant oils on unctuousity of drilling fluids

The object of study is natural oils. Lubricating additives based on substances – vegetable oils and animal fats meet the increased requirements for environmental safety materials used in drilling process. Consumption environmentally friendly lubricants constantly growing requires an expansion raw material base their production. Therefore today are important reagents. From ecological point view, lubricating greatest interest. main physicochemical properties sunflower castor influence these rheological characteristics fluids were investigated. In addition, water-clay investigated parameters determined according to standard API methods. During testing samples, we took into account, first all, a shear rate filter cake (CFC). It value that characterizes strength by ratio necessary tangential displacement cyclic load across its weight. CFC samples solutions with lubricant additive certain concentration studied. Based above studies, it can be concluded addition oil effectively reduces coefficient friction filtration crust formed from studied (fresh, mineralized, saline). recommended concentrations this fluid 0.5 %, 1 5 %. Sunflower has effective effect saline solution, less mineralized 3 On basis conducted researches prospects use at development new compounding greasing mud defined. Further research aimed assessing lubricity limit «metal-metal». planned repeat Sticking Tester OFI (USA).