OIL FIELD DEVELOPMENT Russian patent published in 2006 - IPC E21B43/22 

FIELD: oil field development, particularly to extract residual fluid from productive reservoirs.

SUBSTANCE: method involves drilling vertical wells to productive reservoir in accordance with predetermined pattern; drilling side horizontal bores at later development stage so that the bores are arranged between vertical production wells in parallel planes; injecting 18-50% hydrogen peroxide mixed with stabilizing agent in one well having side bore; injecting 5% sodium permanganate in another well provided with side bore so that sodium permanganate volume is equal to that of horizontal well bores; forcing hydrogen peroxide and sodium permanganate in productive reservoir by water plug; creating backpressure at heads of wells having side bores; exciting technological time-delay along with oil displacement due to reaction product discharge and performing additional oil displacement after reaction termination through production wells by water plugs supplied from day surface through injection wells having side horizontal bores. The stabilizing agent is starch or laundry soap.

EFFECT: increased efficiency of residual oil recovery stimulation due to improved oil reservoir treatment.

2 cl, 1 tbl, 2 dwg