METHOD OF HYDROPHOBIC TREATMENT OF BOTTOM-HOLE ZONE OF PRODUCTIVE FORMATION Russian patent published in 2011 - IPC E21B43/22 C09K8/84 

FIELD: oil and gas industry.

SUBSTANCE: in method of hydrophobic treatment of bottom-hole zone of productive formation, which involves supply to porous-crack space of bottom-hole zone of formation of mixture of surface active substances, well soaking for capillary intake and change-over to hydrocarbon influx mode, there used as the above mixture is the following solution containing the following, wt %: mixture of polyatomic alcohols - by-product during production of mono-, di- and triethylene glycols 75.0-96.0, concentrate of main impurities of production of ethyl alcohol from food raw material 1.0-4.0, intermediate fractions of production of ethyl alcohol from food raw material 0.5-4.0, grain oil 1.0-3.0, neonol 0.5-4.0, hydroxyethylated fatty acids 1.0-10.0, delivery is performed by alternating the above solution with stable condensate, starting from and ending with delivery of stable condensate; well soaking is performed during 24-60 hours; and after that, fluid is discharged from well to plume till the beginning of steady operation of well.

EFFECT: higher efficiency and reliability of hydrophobisation of bottom-hole zone of formation owing to reducing and stopping the water filtration, increasing the influx of hydrocarbons and enlarging the duration of hydrophobisation effect.

2 tbl, 1 ex