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Application filed by îNTREPRINDEREA DE FORAJfiledCriticalîNTREPRINDEREA DE FORAJ
Priority to RO122449ApriorityCriticalpatent/RO94492B1/en
Publication of RO94492B1publicationCriticalpatent/RO94492B1/en
Fluidul de foraj, conform inventiei, este constituit din hidroxietilceluloza, monoetilenglicol-oxipropilat, sare de sodiu a acizilor humici, motorina, amestec de alchilarilsulfonat de sodiu si saruri alcaline ale acizilor humici de lignit, produs de reactie al diaminelor si poliamidelor alifatice cu acizi naftenici si cantitate necesara de apa dulce sau de mare si clorura de calciu pentru a realiza o greutate specifica de 1,04...1,36 kgf/dm3.The drilling fluid according to the invention consists of hydroxyethylcellulose, monoethyleneglycol-oxypropylate, sodium salt of humic acids, diesel oil, sodium alkylarylsulfonate mixture and alkali metal salts of lignite humic acids produced by the reaction of diamines and aliphatic polyamides with naphthenic acids and the required amount of fresh or sea water and calcium chloride to achieve a specific gravity of 1.04 ... 1.36 kgf / dm3.