| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: telemetric system is proposed for monitoring of bottomhole parameters, using a pipe string for transfer of data with the help of an acoustic field, which comprises a surface module of reception and processing of a signal and a bottomhole module lowered into the pipe string, and the bottomhole module includes a unit of measurement of bottomhole parameters, a unit of control of a bottomhole module, a unit of an acoustic generator, a device of connection and disconnection with a pipe from the pipe string, an actuating mechanism, and also a power supply unit. The actuating mechanism is made as capable of providing a direct acoustic contact with the surface of the internal wall of the pipe by means of pressing of an element to it, which is made of a material with hardness exceeding the hardness of the pipe material, with introduction of the latter into the material of the pipe wall. The surface module of reception and signal processing is made with a function of registration of parameters of an information signal received in one or several different frequency ranges, and with a function of detection of working frequency ranges of the acoustic field by means of their selection inside frequency bands, where the level of natural and structural noise in the field of reception of the information signal on the surface is minimal relative to the level of the specified noise in other frequency bands.EFFECT: improved efficiency of information transfer with the help of an acoustic field.9 dwg |
