FIELD: oil and gas industry.
SUBSTANCE: stabilised emulsion composition includes oily fluid medium, fluid medium being at least partially non-mixed with oily fluid medium, and emulsion-stabilising agent containing the first ionic compound soluble in oily fluid medium or the above fluid medium, and the second ionic compound with a charge with an opposite sign relative to the first ionic compound. The proposed method involves production of the above composition of stabilised emulsion and its placement into an underground formation as a part of underground work. The method involves production of the above composition and drilling of a well in the underground formation using it. The method for obtaining the above composition involves the following: production of oily fluid medium; production of the above fluid medium; production of emulsion-stabilising agent including the first ionic compound, which is soluble in oily fluid medium or the above fluid medium, and the second ionic compound with the charge with opposite sign relative to the first ionic compound, and combination of oily fluid medium, fluid medium and stabilising agent with formation of composition.
EFFECT: improvement of emulsion stability and reduction of the stabilising agent amount.
17 cl, 1 tbl
