METHOD FOR ACOUSTIC BALANCING OF FLOOD FRONT OF OIL BED Russian patent published in 2012 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: according to the method, injection and producing wells are arranged in a bed of uneven permeability with large and fine cracks, also the ones formed by a bed hydraulic rupture. According to the invention, previously at the end of a tubing pipe facing the injection well bottomhole, a row of holes is arranged, which are designed for outflow of injected water and radiation of a turbulent low-frequency sound. Additionally quarter-wave-length resonators are installed at the end of the tubing pipe to convert the specified turbulent low-frequency sound into a high-frequency range. Then the tubing string with quarter-wave-length resonators is lowered into the well. Then water is pumped with additional of gel particles for their coagulation and swelling under impact of standing waves and coverage of the specified large cracks. At the same time the injected water is distributed in direction of producing wells among small cracks, balancing the flood front of the oil bed.

EFFECT: higher efficiency of deposit development due to acoustic technology of oil bed flood front balancing.

8 dwg