Split type resistivity logging button electrode, preparation method and instrument

Through the split design and the use of sealing rubber rings, the problem of sealing failure of button electrodes in high temperature, high pressure and high vibration environments is solved, the reliability and service life of the electrode are improved, and more efficient logging work is achieved.

CN119804573AActive Publication Date: 2025-04-11HANGZHOU FENGHE PETROLEUM TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202510294740.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-04-11
Estimated Expiration
2045-03-13

AI Technical Summary

Technical Problem

Existing button electrodes are prone to failure of seal between electrodes and insulating materials in high temperature, high pressure and high vibration environments, resulting in electrode failure and failure of internal circuits of the instrument, causing logging work to be unable to be completed, and huge time and economic losses.

Method used

The split design is used to separate the button electrode into an upper case, electrode block, probe, insulating assembly, metal base and bottom plate, and seal it through a sealing rubber ring to ensure that the insulation layer between each component is sealed and filled and sealed to improve sealing.

Benefits of technology

It effectively solves the problem of seal failure, improves the reliability and service life of button electrodes, reduces the difficulty of process design and production costs, and ensures full contact between the electrode and the well wall and low friction, supporting drilling and logging work.

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Abstract

The invention discloses a split resistivity logging button electrode, a preparation method and an instrument, the split resistivity logging button electrode comprises an upper shell, an electrode block, a probe, an insulation assembly, a metal base and a bottom plate, the electrode block is in sealed connection with an upper opening of the upper shell, the electrode block comprises a plurality of electrode assemblies which are not in contact with each other, the metal base is provided with a plurality of probe holes, and the probe holes are communicated with the bottom plate. The electrode assembly is provided with a probe connecting hole, the top end of the probe penetrates through the probe hole and is connected with the electrode block through the probe connecting hole, the bottom end of the probe is provided with a bonding wire hole, the bottom plate is connected to a lower opening of the upper shell in a sealed mode, and a wire is led out of the bonding wire hole and then connected with an instrument through a wire passing hole of the bottom plate. The insulation assemblies enable insulation layers with certain insulation thickness to be formed between the electrode assemblies and between the electrode assemblies and the metal base, the space between the electrode assemblies is filled with the insulation layers in a sealed mode, the upper shell is connected with an instrument in a sealed mode, and the process design and product implementation difficulty is lowered while the performance is not affected.
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