FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to methods of developing accumulations of low-gravity super high-viscosity oils and bitumen using heat, steam and solvents. Substance claim: proposed method comprises injecting steam into formation, heating formation by creating steam chamber, combined injection of steam carbon solvent and products extraction. In compliance with this invention, said carbon solvent can represent mix of hydrocarbons of aliphatic series and aromatic series, the primary component of which is benzol. Combined injection of steam and hydrocarbon solvent is carried out after reaching the temperature in steam chamber not lower than that of the phase transition of the steam-solvent mix. Thereafter aforesaid temperature is maintained therein.
EFFECT: higher efficiency, lower costs.
1 ex,1 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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