Electrode device for measuring seabed weak electric field signal and manufacture method of electrode device

Abstract

The invention discloses an electrode device for measuring a seabed weak electric field signal and a manufacture method of the electrode device. The electrode device comprises a silver / silver chloride electrode, an electrode boot, an electrode protective cover and a signal transmission connector, wherein the silver / silver chloride electrode comprises a silver / silver chloride electrode sheet, a micropore tube, an organic glass rod and a mixture of silver chloride powder and diatomite; the electrode boot and the electrode protective cover are made of ABS (Acrylonitrile Butadiene Styrene) materials; the upper part of the electrode boot is designed for realizing the connection of the signal transmission connector with the silver / silver chloride electrode and the sealing of the silver / silver chloride electrode; the lower part of the electrode boot and the electrode protective cover are provided with multiple pores in the surfaces; the signal transmission connector is sealed on the top end by using an O-shaped ring and the electrode boot; and the electrode protective cover is fixed on the bottom of the electrode boot. The electrode device provided by the invention has lower noise, betterweak signal distinguishing capacity and good stability, and can be used for accurately measuring the seabed weak electric field signal.

Description

technical field [0001] The invention relates to the technical field of electrochemistry and the field of geophysical exploration, in particular to an electrode device for measuring weak electric field signals on the seabed and a preparation method thereof, which are suitable for collecting weak electric field signals on the seabed. Background technique [0002] The collected submarine magnetotelluric signals, after data processing, can reveal the distribution law of the rock medium below the seafloor, understand the complex underground geological conditions, and detect the reserves and distribution of submarine oil, natural gas hydrates and various mineral deposits. However, the submarine electric field signal is different from the terrestrial electric field signal, which is embodied in: [0003] 1. Due to the attenuation of the signal due to the high conductivity shielding effect of seawater, the electric field signal of the seabed is extremely weak compared with the land. ...

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Problems solved by technology

[0004] 2. Submarine electric field signals are mainly medium and low frequency signals, so the acquisition time is relatively long

[0006] At present, silver / silver chloride (Ag / AgCl) is selected as the basic material of marine electrodes in research and experiment, but its commonly used electrodes are solid silver / silver chloride electrodes made by powder pressing method. Silver (Ag) and silver chloride (AgCl) are mixed according to a certain ratio, pressed, and sintered to make it. It corrodes continuously with the erosion of seawater and cannot obtain accurate and consistent signals. Accuracy of the obtained signal is inconsistent

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