WELL ACOUSTIC TRANSMITTER Russian patent published in 2018 - IPC E21B43/25 E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry and is intended, in particular, for the treatment of oil and gas wells. Proposed downhole acoustic emitter, comprising a housing with a sealed area filled with insulating fluid, a source of acoustic radiation placed in the cavity of the sealed portion of the housing, the source of acoustic radiation is provided with a waveguide rigidly and coaxially connected to the radiating surface of the source of acoustic radiation, on the opposite side of the waveguide is placed in the open cavity of the body, communicated with the external environment, the waveguide in the middle part, which coincides with the zero point of its oscillation, is rigidly and tightly connected along the perimeter with the body, dividing its cavities into an open and airtight one. In this case, the open portion of the body is adapted to ensure the passage of acoustic radiation to the well. Housing contains a second sealed section, while the open section of the housing is located between the sealed sections, the cavity of the second sealed section is filled with insulating liquid, in the cavity of the second sealed section axially to the first source of acoustic radiation, there is a second source of acoustic radiation, equipped with a waveguide rigidly and coaxially connected to the radiating surface of the second source of acoustic radiation and facing the first waveguide. Part of the second waveguide is placed in the open cavity of the housing opposite the first waveguide, the second waveguide in the middle part coinciding with the zero point of its oscillation is rigidly and tightly connected along the perimeter to the housing, separating the open cavity from the second sealed cavity, the waveguides are spaced apart. In addition, each waveguide is made with a through hole facing the opposite ends of the waveguide and communicated with the internal sealed cavity of the housing. Both waveguides are connected by a hollow connecting tube installed in the through holes of the waveguides, while the internal cavity of the connecting tube is isolated from the open cavity of the housing. Source of acoustic radiation and the connecting tube are installed with the possibility of changing the distance between the waveguides.

EFFECT: technical result is increased efficiency and increased functionality.

16 cl, 3 dwg