FIELD: oil industry.
SUBSTANCE: invention relates to completion and repair of oil and gas wells and can be used in conditions of abnormally high formation pressures and high temperatures, in conditions of low temperatures of Extreme North for killing and performance of various types of works, including in wells, developing one or several formations having different formation pressure and permeability. Composition of heavy process fluid for killing wells contains 10.0–16.6 wt % zinc chloride, 0.30–0.62 wt % corrosion inhibitor, 23.1–30.1 wt % calcium chloride, 16.5–21.5 wt % calcium nitrate and 38.0–43.3 wt % of water.
EFFECT: technical result is low corrosion activity and freezing temperature of composition, preservation of mobility at low temperature.
5 cl, 1 dwg, 1 tbl
