Magneto-resistive seismic wave detector

Abstract

Disclosed is a magneto-resistive seismic wave detector. The magneto-resistive seismic wave detector comprises a magneto-resistive element, a magnet, a housing and a spring. The spring is arranged inside the housing, and both ends of the spring are fixed onto the two inner walls of the housing; the magnet is mounted on the spring and in the middle of the spring; the magneto-resistive element is arranged under the magnet, the lower end of the magneto-resistive element is fixed onto the bottom surface of the housing, and the geometric center of the magneto-resistive element is located in the linear distribution zone of the magnetic field produced by the magnet. When receiving seismic waves, under the action of the spring, the magnet and the magneto-resistive element interact with each other to generate inertial oscillation and accordingly can produce relative displacement to change the magnetic field, so that seismic signal collection can be completed. The magneto-resistive seismic wave detector can effectively collect the seismic signals of deep stratums, improve the seismic exploration accuracy, meet the requirements of precise geological exploration and obtain obvious economic benefits.

Description

technical field [0001] The invention belongs to special equipment for oil field seismic exploration and engineering exploration, and is a magnetoresistive geophone. Background technique [0002] A geophone is a specialized sensor used in geological exploration that converts ground vibrations into electrical signals. The existing geophones are mainly moving coils. Due to structural design flaws, poor low-frequency and high-frequency responses, and small dynamic range, it is difficult for seismic exploration equipment to collect effective deep signals, which affects the accuracy of petroleum seismic exploration. It cannot meet the requirements of precise geological exploration. Contents of the invention [0003] The purpose of the present invention is to design a magnetoresistive geophone, which overcomes the deficiencies in the prior art, can collect effective deep-layer signals, improves the accuracy of petroleum seismic exploration, and satisfies complex terrain conditio...

AI Technical Summary

Problems solved by technology

The existing geophones are mainly moving coils. Due to structural design flaws, poor low-frequency and high-frequency responses, and small dynamic range, it is difficult for seismic exploration equipment to collect effective deep signals, which affects the accuracy of petroleum seismic exploration.

Unable to meet the requirements of precise geological exploration

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