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: proposed method comprises drilling, at least, one pair of continuous horizontal wells, extracting well and fill-in well above the former, arranging casing with filter in producing formation section, injecting heat carrier into fill-in well and extracting oil though appropriate well. In compliance with this invention, extracting horizontal well is located in the section of most permeable band by 6 to 8 m above producing formation or oil-to-water contact bottom. Fill-in horizontal well is arranged 6 to 7 m from extracting well. Every 20 to 30 m, channels are made in said wells with their length varying from 40 to 100 m that run parallel to oil-to-water contact of producing formation bottom and perpendicular to horizontal bore. Said channels are arranged in one plane, one above the other. Heat carrier is injected from fill-in well mouth and bottom, while products are extracted from producing well mouth and bottom.

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

1 ex, 2 dwg