Composite well vibration detection device

Abstract

The invention relates to an oscillation detection apparatus in a complex well. The oscillation detection apparatus is composed of a bearing hook, a housing, a detector unit, a self-compensation eccenteringailll unit, a hydrophone unit and a cable group. The housing includes an upper cylinder body, a middle cylinder body and a lower cylinder body. The detector unit includes a movement fixing body, a cable fixing block, etc. The movement fixing body and the cable fixing block are respectively in secured packaging inside the upper cylinder body via bolts and O-shaped seal rings. The self-compensation eccenteringailll unit is mounted inside the middle cylinder body and includes a motor, a screw rod, a sliding nut, an upper rocking arm, a lower rocking arm and a supporting rod, wherein the screw rod has a lower portion connected to an output shaft of the motor and has a upper portion connected to the sliding nut. The sliding nut hinges the supporting rod via the upper rocking arm and the lower rocking arm. The supporting rod extends out of the middle cylinder body is strutted on the well wall. The hydrophone unit is mounted inside the lower cylinder body. The oscillation detection apparatus has a reasonable composition, and has self-compensation eccenteringailll function. The oscillation detection apparatus not only can detect vibration signals, but can also detect water pressure variation signals, and is characterized by reliable sealing and easy operations, such as assembling, maintenance, and interchanging.

Description

technical field [0001] The invention relates to a vibration detection device in a well, in particular to a composite vibration detection device in a well. Background technique [0002] In the prior art, the vibration detection device in the well is provided with a motor in the housing, and a screw mandrel is arranged on the output shaft of the motor, and the screw mandrel is connected with a sliding nut, and the sliding nut hinges the pole. The applicant's invention patent ZL200910266764.4 discloses a self-compensating well vibration detection device, the housing is equipped with a motor, the output shaft of the motor is provided with a screw, the screw is connected with a sliding nut, and the sliding nut is hinged to the pole , the end of the screw rod connected to the motor output shaft is provided with a flat hole connector, and the corresponding motor output shaft is a flat shaft, the flat hole connector on the screw rod is slidingly connected with the motor output shaft...

AI Technical Summary

Problems solved by technology

[0003] The top of the self-compensating pushing body of the device can be equipped with a land geophone core for detecting seismic shock waves. Since the geophone core shares a cavity with the motor, sliding nut, hinge mechanism, etc., according to actual needs, the main body There are many sealing surfaces isolated from the external environment. Once there is an accidental leakage of water and electricity somewhere, although the DC motor and the hinge mechanism can still work, the sealing level required by the detector core is much higher, and it will be damaged due to water leakage. It cannot work due to electric leakage, which will affect and restrict the use and promotion of the product in actual use

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