40KHz Ultrasonic Transducer Downhole Drilling Transducer for Downhole Sensors

Technical parameters:

Block diagram of ultrasonic transducer :

Schematic Diagram of Temperature Sensor (model: MF58_502F3470):


Integrated type Cable instruction:   

1.Wiring instruction of transducer: interface (3pin, 2.54mm terminal)
Red: transducer +      
White: transducer -         
Black: shielding


2.Cable Instruction of Temperature Sensor: interface (3pin, 2.0mm terminal)

Red and black are temperature sensor wiring

Split type: standard 10m cable, with each additional 50m of cable, the signal attenuation is 6dB

Three-core wiring instructions:                
                        
    Red: Transducer +
     Blue: temperature sensor +
     Black: Public-

 Four-core wiring instructions:

Red: Transducer +                      
Yellow: Transducer-
Blue, black: temperature sensor

Downhole Sensors Application:

A downhole ultrasonic transducer to acquire a high-resolution borehole surface image in the harsh environmental operating conditions experienced while drilling. The ultrasonic transducer was designed and developed to be incorporated into a downhole drilling tool to acquire a pulse-echo signal from the borehole wall, known in the industry as imaging while drilling. The design of the transducer incorporated acoustic modeling to achieve the desired sensitivity and bandwidth using a composite piezoelectric element, two impedance matching layers, and a high impedance backing. Mechanical design techniques, including a manufacturing procedure that produces reliable bonds between layers, a ruggedized housing, and impact-resistant transducer packaging, were chosen to ensure the transducer's reliability in the downhole environment.