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Work purpose пїЅ study of the feasibility of using biotesting methods for screening ecologically safe components of drilling solutions, to control the technology of neutralizing drilling sludges in the case of sumpless drilling. To achieve the purpose, biotesting methods based on the survival of daphnia, infusoria, quenching of luminescence of luminous bacteria, immobilization of algae was used. For reduction in cost of technology of drilling studied a possibility of replacement of medicines of chloride sodium by ...