| 摘要 |
FIELD: oil production, particularly to stimulate oil production with the use of chemical reagents. ^ SUBSTANCE: method involves injecting acetate buffer agent, 50% hydrogen peroxide solution and catalyst, namely manganese, solution; decomposing hydrogen peroxide in reservoir along with releasing heat; injecting water and lifting oil via production wells. The acetate buffer agent is 5% solution of acetic acid and sodium salt thereof, namely CH3COOH+CH3COONa, 5% solution of above catalyst; injecting above buffer agent in amount equal to 0.1 of pore volume before above hydrogen peroxide solution injection in amount of 0.2 of pore volume. After hydrogen peroxide solution injection the buffer agent is injected in amount equal to two flow string volumes and then above catalyst solution is injected in amount of 0.013 of pore volume. ^ EFFECT: increased efficiency of residual oil production due to increased force applied to bound water. |
