METHOD OF EXPRESS REPAIR TO RECOVER TIGHTNESS OF GAS-WATER-OIL EXPOSING WELLS Russian patent published in 2012 - IPC E21B33/13 C09K8/508 

FIELD: oil and gas industry.

SUBSTANCE: method includes first discharge of excessive pressure from annular spaces down to atmospherical value, then to plug macrochannels and microchannels of fluids migration, annular and borehole spaces are filled to the upper zone of the wellhead with a sealing liquid on the basis of an aqueous solution of saponified tall oil pitch with concentration from 5 to 17%, containing 1-5% of carbon mixture having high reaction capacity by means of at least its single free topping or pumping into annular or borehole spaces under pressure, at the same time well tightness is identified in annular spaces by drop of excessive pressure down to zero values using a pressure gauge or fluid flow rate from a flow meter from annular spaces of the well.

EFFECT: liquidation of annular pressures and annular crates, prevention of gas saturation in near-surface borehole deposits, prevention of conditions for occurrence of explosions and fires at the area adjacent to the wells.

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