METHOD CONTROL OVER OIL DEPOSIT DEVELOPMENT Russian patent published in 2012 - IPC E21B43/32 E21B33/13 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to control over oil deposit development and may be used for increasing reservoir recovery or in reservoirs developed by heat methods. Method of developing deposit with different-permeability beds and high seam temperature of 90°C and higher, or in subjecting the bed to 100-320°C, comprises injecting, portion-by-portion, the water solution of aluminium and carbamide salt. Note here that, first, injected is portion of water solution containing in wt %: aluminium salt 1.0-3.0, carbamide 3.75-15.0 wt % and water making the rest, to make sol in the bed, and, then, one more portion of water solution containing in wt %: aluminium salt 3.5-17.0, carbamide 16.0-30 and water making the rest to make gel in the bed. Aluminium salts represent anhydrous or hydrated aluminium chloride or nitrate, or their partially hydrolysed elements. Note that aluminium hydroxochloride aluminium oxide 10-30 wt %.

EFFECT: higher yield.

1 tbl, 2 dwg