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Simulation and Device for the Ultrasonic Telemetry Channel in Drill String with Fluid
Observation of producing wells is inherently associated with reliable methods for geophysical parameters transmitting. In order to better understanding the telemetry transfer, the physical experiments should be performed according to similar principles focused on the signal transfer in the drill string. This paper discusses the design of a receiving and transmitting system of telemetry data. The main feature of this design is the use of ultrasonic frequencies. It is assumed it will reduce the signal attenuation and increase the transmission speed-rate. The devices are developed based on the ma40s4r receiver and the ma40s4s transmitter. During the study, a strong interference effect was found, making it difficult to identify a useful signal. In this regard, the acoustic signal receiver was transformed into a vibration signal receiver, which significantly reduced signal fluctuations. Related discussions and recommendations for modeling and design are made