WELL ABSORPTION AREA ELIMINATION METHOD Russian patent published in 2004 - IPC

FIELD: well-boring under complicated conditions. SUBSTANCE: method includes placing a pipe in a well. Lower end of pipe is placed within absorption area. Then solidification plugging compound and gas are fed into mixing area, connected to pipe upper end. Obtained gas- plugging compound is then fed into the well. Compound is located within absorption area. In first embodiment, which is used if pressure in absorption area and atmospheric pressure is of one order, gas-plugging compound is supplied by means of a pipe, upper and lower ends of which are of reduced cross-section. Gas-plugging compound is fed into absorption area at uniform condition with soluted gas. In absorption area compound amount increases. In second embodiment, which is used if the pressure in absorption area is of one order with pipe pressure during supplying process, i.e. by one order or more greater than atmospheric pressure, gas-plugging compound is supplied by means of pipe, upper end of which is of reduced cross-section. Gas-plugging compound is fed into absorption area at uniform condition with soluted gas. In absorption area compound amount increases. EFFECT: increased quality of plugging for all types of absorptions. 2 cl, 3 ex