METHOD TO DEVELOP STICKY OIL AND BITUMEN ACCUMULATION Russian patent published in 2010 - IPC E21B43/24 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to oil-and-gas industry and can be used in developing sticky oil and bitumen reservoirs. Substance claim: fill-in wells and horizontal extracting wells are drilled, heat carrier is injected via fill-in wells and oil is extracted through production wells. Bore of production horizontal well is located nearby production formation bottom so that the distance from the point fill-in well bore enters the production formation at horizontal section of production well bore makes 0.8 of formation depth. Bottom section of fill-in well bore is arranged at one level horizontal production well at 5 to 10 m between them. Note here that fill-in wells are drilled controlled-directional at 45° to formation bottom.

EFFECT: efficient displacement of sticky oil and bitumen, increased oil yield, higher rate of formation heating and extraction rate.

1 ex, 2 dwg