ACOUSTIC SYSTEM OF DETERMINING PARAMETERS OF PERFORATION AT SECONDARY OPENING OF OIL AND GAS DRILLING WELLS Russian patent published in 2017 - IPC G01V1/40 

FIELD: measuring equipment.

SUBSTANCE: method is carried out by means of measurement of acoustic wave propagation during the perforation on the hydrodynamic channel: along the adjacent rock, including the cement ring, along the inner channel of the casing itself, with the sound source being the mechanism of the perforator during operation and the noise of the supply water. From the publicly available sources of patent and scientific and technical information, there are no known acoustic methods for determining the parameters of cavities in the well and in the near-bore space of a perforated well, as well as control of the accuracy of cutting the casing, in which the new significant distinctive operations introduced by us will be used, in which the new significant distinctive operations introduced by us will be used to provide the proposed method with obtaining a new technical result set forth for the purposes of the claimed invention.

EFFECT: ensuring the possibility of a high degree of accuracy in determining the state of the parameters of the well at hydromechanical perforation in conditions of acoustic noise with a signal-to-noise ratio less than one, simplification of the method.

1 dwg