PREPARATION METHOD OF SOLID INHIBITORS OF COMPOUND ACTION FOR PREVENTION OF ASPHALTENE-TARRY-PARAFFIN DEPOSITS AND HYDRATING Russian patent published in 2009 - IPC C09K8/52 C09K8/54 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil production, namely to the preparation method of solid inhibitors of compound action for prevention of asphaltene-tarry-paraffin deposits and hydrating. Preparation method of solid inhibitor includes, first, heating of carrier materials mixture: stillage residue of amines production C₁₇-C₂₀ and oil construction bitumen, then, adding of industrial cleaning agent and polyacrylamide to the heated stuff, then calcium chloride and carbamide, in this connection the mixing ratio of the components is the following, wt %: industrial cleaning agent 30-40, carbamide 10-20, calcium chloride 20-30, polyacrylamide 0.2-0.3, stillage residue of amines production C₁₇-C₂₀ 12.35-25.0, oil construction bitumen - all the rest. Asphalt of BI-70/30 grade is used as oil construction bitumen.

EFFECT: simultaneous prevention of asphaltene-tarry-paraffin deposits and hydrating at wells drowning.

2 cl, 5 tbl