Sound wave well logging transducer

Abstract

The invention discloses a sound wave well logging transducer, comprising a transmitting transducer and two receiving transducers. The transmitting transducer is a cylinder poured by epoxy resins, and a wire, a piezoelectric ceramic ring and a high voltage generation and vibration trigger are arranged in the cylinder, wherein the wire is connected with the high voltage generation and vibration trigger; and the piezoelectric ceramic ring is arranged at the periphery of the wire. The receiving transducer is a cylinder poured by the epoxy resins, and a wire, an amplifier, a PPR plastic tube and a piezoelectric ceramic ring are arranged in the cylinder, wherein the amplifier is arranged at the periphery of the wire; and the PPR plastic tube is arranged at the periphery of the amplifier, and the piezoelectric ceramic ring is arranged at the periphery of the PPR plastic tube. The transmitting transducer and the receiving transducers are connected by flexible wires and the receiving transducers are connected by PPR plastics. The transducers have the advantages of strong interference resistance, high signal-to-noise ratio, good waterproof property, small volume, high precision, light weight and convenient carrying, and can be used for achieving data collection of long line transmission.

Description

technical field [0001] The invention relates to engineering detection equipment, in particular to an acoustic logging transducer made of piezoelectric ceramic ring crystals. Background technique [0002] The disadvantages of the acoustic logging transducer used in the prior art are as follows: [0003] (1) The three transducers are hard-connected, because they cannot be bent, making the transducers inconvenient to carry; [0004] (2) Since the piezoelectric ceramic ring is a high-impedance device, the three piezoelectric ceramic rings are directly connected to the instrument through a shielded cable, and the distributed capacitance of the cable itself greatly attenuates the transducer signal, seriously reducing the performance of the acoustic-electric conversion , reflected in two aspects of poor high-frequency response and reduced sensitivity. [0005] Therefore, it is necessary to improve the existing acoustic logging transducers. Contents of the invention [0006] Th...

AI Technical Summary

Problems solved by technology

[0003] (1) The three transducers are hard-connected, because they cannot be bent, making the transducers inconvenient to carry;

[0004] (2) Since the piezoelectric ceramic ring is a high-impedance device, the three piezoelectric ceramic rings are directly connected to the instrument through a shielded cable, and the distributed capacitance of the cable itself greatly attenuates the transducer signal, seriously reducing the performance of the acoustic-electric conversion , reflected in poor high-frequency response and reduced sensitivity

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