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Velocity and acceleration two-parameter digital geophone

A technology of geophones and accelerations, applied in the direction of seismic signal receivers, etc., to achieve the effects of improving dynamic range, improving exploration accuracy, and improving signal-to-noise ratio

Inactive Publication Date: 2014-06-11
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] At present, there is no speed and acceleration dual-parameter digital geophone and similar products in the world. It is of great significance to improve the propagation characteristics and improve the exploration accuracy

Method used

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  • Velocity and acceleration two-parameter digital geophone
  • Velocity and acceleration two-parameter digital geophone

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Embodiment Construction

[0024] Do further explanation below in conjunction with accompanying drawing:

[0025] The device speed and acceleration double parameter digital geophone VAG of the present invention has the function of signal acquisition and reception of the two parameters of speed and acceleration at the same receiving point, which can make subsequent data processing and analysis in the same receiver described by the two descriptions of speed and acceleration The field of different physical quantity of point displacement is carried out, and comparative analysis is carried out. At the same time, due to the different response characteristics of the velocity sensor (moving coil geophone CG) and the acceleration sensor (MEMS Sensor) to the seismic signal and noise at the same receiving point, in other words, the effective seismic signal and various noises in the The two physical quantities of velocity and acceleration have different performance characteristics. Using this characteristic is more...

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Abstract

The invention relates to a velocity and acceleration two-parameter digital geophone, so that a problem that surveying accuracy is poor in the prior art can be solved. A micro electromechanical system acceleration transducer and a moving-coil velocity detector are integrated into one to form a digital detector that is capable of simultaneously collecting two physical quantities: velocity and acceleration of a same receiving point and has functions of signal collection and reception of velocity and acceleration at a same receiving point; therefore, subsequent data processing and analyzing can be carried out in fields of velocity and acceleration that are different physical quantities for describing displacement of the same receiving point and then comparison and analyzing are carried out. The digital geophone has advantages that: a seismic wave spreading characteristic can be studied precisely and surveying accuracy can be improved.

Description

technical field [0001] The invention relates to a geophone, in particular to a double-parameter digital geophone of velocity and acceleration. technical background [0002] Seismic exploration method is still the main means of oil and gas exploration on land and sea, and also an important exploration method for other mineral resources, and is widely used in the study of the earth's internal structure, engineering exploration and detection, geological disaster prediction and so on. The instrument used in seismic exploration to directly pick up seismic vibration and convert the vibration into an energy form that meets the needs of the instrument recording system is called a geophone. Seismic geophones can be divided into land geophones, swamp geophones, sea geophones and underground geophones according to the use environment; according to the working principle, they can be divided into electromagnetic induction (moving coil) geophones, piezoelectric geophones, optical fiber G...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/18
Inventor 郭建
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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