COMPOSITION FOR PREVENTING ASPHALTENE-RESIN-PARAFFIN DEPOSITS Russian patent published in 2020 - IPC C09K8/524 E21B37/06 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil industry, in particular to compositions for preventing deposits of asphaltenes, resins and paraffins, and can be used in oil production, transportation and storage processes. Composition inhibitor of asphaltene-resin-paraffin deposits contains, wt. %: non-ionic surfactant - oxyethylated alkylphenol - neonol AF 9–6 1.0–10.0, solvent - water - 22.5–28.5, additive 10.5–16.0, methanol - the rest. Additive used is a mixture of ethyl cellosolve and pentaerythritol in a weight ratio of 15–30.

EFFECT: technical result of implementation of invention is providing stable composition of ARPD inhibitor in wide temperature range and possibility of its use at temperatures below minus 50 °C, high efficiency of inhibiting ARPD, providing low corrosion aggressiveness, compatibility with oil and commercial deemulsifiers used in oil collection facilities and in transport pipelines; in addition, the disclosed ARPD inhibitor increases the effectiveness of commercial deemulsifiers.

1 cl, 4 tbl, 10 ex