METHOD FOR DEVELOPMENT OF HIGH-VISCOSITY OIL DEPOSIT IN SLIGHTLY CEMENTED BEDS Russian patent published in 2009 - IPC E21B43/248 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to methods for development of oil deposits in slightly cemented beds with the help of thermal action. Pressure and production wells are drilled. Coolant is pumped in pressure wells, and oil is extracted from production wells equipped with operational, pump-compressor pipes and equipment for liquid lifting from well. Operational column of production wells is installed below oil bed top. Shaft under operational column is left open to well bottom. Hydraulically isolated cavity is created through production well below oil bed. Protective jacket is installed under operational column to the depth of equipment lowering for liquid lifting. Equipment for liquid lifting is installed higher than the level of oil and water contact. Hydraulically isolated cavity is used for collection and storage of oil bed disintegration products.

EFFECT: increase of oil production due to reduction of number of operations on removal of sand plugs, creation of favourable conditions for operation of underground equipment with simultaneous increase of well debit.

3 cl, 4 dwg, 1 ex