FIELD: oil and gas production.
SUBSTANCE: procedure for preparation of hydroxi-methyl derivatives of fulvic acids consists in transition of brown coal crumbled to dimension of particles 500 mcm into water dissolved salts of high molecular compounds. Further, it is transited into high molecular organic acids consisting of constituent non-soluble in water in form of hydro-gels and constituent in form of paste soluble in water. Fulvic acids are extracted from paste by extraction with isopropyl alcohol. Fulvic acids are transformed into hydroxi-methyl derivatives of fulvic acids under effect of formaldehyde.
EFFECT: production of more reactive hydroxi-methyl derivatives of fulvic acids.
1 ex, 4 dwg
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