METHOD FOR ELIMINATION OF INTENSIVE ABSORPTION Russian patent published in 2004 - IPC

FIELD: well construction technology. SUBSTANCE: method includes lowering of filling column with a generator of hydroacoustic waves mounted on its lower end, preparation of backfill compound, pumping and forcing through of backfill compound into absorbing layer. During pumping and forcing through, compound is dispersed by hydroacoustic waves. Well is then seasoned for a period of concrete consolidation. According to the method, as backfill compound gel-concrete solution is used. Its pumping and forcing through is performed with effect of hydroacoustic waves with vibration frequency of 10³...16•10³ Hz and with amplitude of pressure oscillations up to 6 MPa. Generator of hydroacoustic waves is mounted on pumping line before cementing head and/or on lower end of lowered filling column with a through packer placed above it. EFFECT: lesser time and material costs. 2 cl, 1 tbl