FIELD: oil and gas production.
SUBSTANCE: loaded drilling mud includes the following, wt %: sodium carbonate 0.3 - 0.5, sodium hydroxide 0.2 - 0.3, bentonite 3-5, poly-anionic cellulose PATS-SV 0.6 - 0.8, amylase Fito-RK 1- 2, lignosulfonate FHLS 0.5 - 1.5, anti-foaming agent PES-1 0.1 - 0.5, lubricating additive Lurioil 0.5 - 0.8, potassium muriate 3-5, organosiloxane GKZH-PN 0.3 - 0.5, baryte 45 - 65, Givpan 0.3 - 0.5, bactericide LPE-32 0.2 - 0.3, water is the rest.
EFFECT: reduction of filtration, improvement of lubricating properties.
3 ex, 2 tbl
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