Two-section type horizontal adjustment device for underground sensor

Abstract

The invention provides a two-section type horizontal adjustment device for an underground sensor. The two-section type horizontal adjustment device comprises a cylindrical sensor shell sleeve. A cable penetration barrel is arranged at the top of the sensor shell sleeve. A vertical sensor adjustment mechanism and a horizontal sensor adjustment mechanism which are arranged up and down are arranged in the sensor shell sleeve. Each of the vertical sensor adjustment mechanism and the horizontal sensor adjustment mechanism comprises a rolling supporting seat and a gravity horizontal ball capable of rolling on the rolling supporting seat. A cavity is formed in the upper part of the gravity horizontal ball. A counterweight body is arranged in the lower part of the gravity horizontal ball. A sensor mounting plane is arranged at the top of the counterweight body. According to the invention, not only the horizontal and vertical measuring requirements of each sensor component can be met, but also the installation mode is simplified. Meanwhile, the weight and the installation difficulty of installation equipment are reduced.

Description

technical field [0001] The invention relates to a two-part downhole sensor level adjustment device. Background technique [0002] In seismic monitoring, placing sensors underground can effectively avoid environmental interference, and a downhole seismometer can fulfill this requirement. In order to record seismic information completely, it is necessary to simultaneously record seismic motion information of three orthogonal components, and to record these information requires two sensor modules for horizontal components and one sensor module for vertical components. If the horizontal component sensor is placed unevenly or the vertical component sensor is placed tilted, it will lead to deviation of recorded data, and wrong conclusions and results will be obtained in analysis applications. [0003] At present, the shapes of downhole seismometers are all in the shape of long cylinders. In order to ensure the horizontal and vertical directions of the horizontal component and th...

AI Technical Summary

Problems solved by technology

However, because the well depth is generally installed in wells with a depth of more than ten meters to tens of meters, or even hundreds of meters deep, the rigid connecting rods cannot be very thick. As the length increases, the rods will bend, which cannot guarantee the verticality of the seismometer. straight

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