FOAM-FORMING COMPOUND FOR COMPLETING AND WASHING WELLS AND METHOD FOR IMPLEMENTING SAID COMPOUND Russian patent published in 2005 - IPC

FIELD: oil and gas industry.

SUBSTANCE: compound including chlorine ammonium, sodium nitrite, reaction initiator, surfactant and water, as reaction initiator and surfactant has special alkylphosphate with following ratio of components in percents of mass: chlorine ammonium 5.0-28.0, sodium nitrite 5.0-28.0, alkylphosphate 0.5-5.0, water - the rest. Method for completing and washing wells and cleaning face zone of bed from pollutions, including pumping of foam-forming compound, pressing this into bed or to face, closing well, exposure for generation of nitrogen and forming of foam, then launch of well for self-drain, uses above-mentioned foam-forming compound, which is pressed by oil or mineralized water.

EFFECT: higher efficiency.

2 cl, 5 ex, 1 tbl