METHOD OF ACOUSTIC INFLUENCE ONTO OIL POOL IN FACE ZONE Russian patent published in 2006 - IPC G01V1/00 

FIELD: oil industry.

SUBSTANCE: method can be used at oil deposit exploration and cleaning of water wells and ore wells. According to the method, acoustic radiator is placed into perforation zone of casing string. Radiator has two radiating members made in form f discs and at least one reflecting screen disposed between radiators on external surface of case. Acoustic field is localized in two resonating spaces limited by resonating members, screen, wells of casing string and external surface of radiator's case. Moreover, radiating surface of radiating member and reflecting surface of screen in any space are disposed in perpendicular to axis of casing string and at some distance between those surfaces, which distance equals to half wavelength at working frequency in well fluid. Resonant frequency of spaces is brought into coincidence with resonant frequency of radiator.

EFFECT: higher intensity of acoustic field in face zone inside casing string and space close to well independently on internal diameter of casing string.

2 cl, 1 dwg