METHOD FOR EXTRACTING DEPOSITS OF HIGHLY VISCOUS OILS AND BITUMENS BY SLANTED-HORIZONTAL WELLS Russian patent published in 2004 - IPC

FIELD: oil extractive industry.

SUBSTANCE: method includes drilling wells according to certain mesh schematics, feeding displacing agent through force wells and extracting bed fluids through product wells. Drilling of wells is performed according to radial mesh. Force wells are placed along productive bed closer to upper limit of bed along most penetrable seams. Extracting wells are placed closer to lower limit of bed. At starting stage of extraction in all wells thermo-cyclic treatment of bed is performed with steam stimulation. Then, extraction of bed fluids is started through product wells with area effect on a bed through force wells.

EFFECT: higher productiveness of bed due to heat carrier treatment, lower areas of terrain used for wells drilling and later operation, better ecological factor of technological process.

1 ex, 2 dwg