METHOD OF PREPARING EMULSIFIER-STABILIZER FOR HYDROPHOBIC-EMULSION DRILLING MUDS

摘要

FIELD: oil and gas production. SUBSTANCE: emulsifier-stabilizer appropriate for creating high-stability hydrophobic emulsion drilling muds with high water content for use when boring in polymineral-composition salts and instable argillaceous rock, when exposing productive formations and killing wells is prepared by heating and stirring for 4-8 h at atmosphere pressure and temperature 120-150 C, in solvent medium, in particular diesel fuel or kerosene (15.0-42.1%), fatty acid production vat residue/triethanolamine mixture at ratio (4-5):1 (57.9-85.0%). EFFECT: combined emulsifying and stabilizing properties resulting in high heat resistance, low filtration, and high structural characteristics of hydrophobic-emulsion drilling muds. 2 cl, 3 tbl, 4 ex