FIELD: oil and gas production.
SUBSTANCE: invention can be used for drilling out salt bearing deposits, for primary and secondary pays opening, for well killing and for various operations at well repair under conditions of abnormally high reservoir pressure and high temperature. Composition for preparation of process liquids without solid phase for killing and repair of wells contains, wt %: calcium chloride 39.0-78.8, technological calcium nitrate 20.8-60.7, calcium hydroxide 0.2-0.3, hydrogen sulphide neutraliser 0.2-4.7.
EFFECT: reduced corrosion activity.
7 ex, 1 tbl
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