48 Channels Engineering Survey Seismograph For Seismic Investigation

Seismic exploration is the most important and effective method to solve the problem of oil and gas exploration in geophysical exploration.
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Product Details

Seismic exploration is a geophysical exploration method which uses the difference of elasticity and density of underground medium to infer the nature and shape of underground strata by observing and analyzing the propagation law of seismic wave generated by artificial earthquake in the underground.


Seismograph


Seismic exploration is the most important and effective method to solve the problem of oil and gas exploration in geophysical exploration. It is an important means to survey oil and gas resources before drilling. It is also widely used in coalfield and engineering geological exploration, regional geological research and crustal research.


Geophone and cable


Functions:

●Multi-wave seismic

●Wave speed (sheared wave) survey

●Transient multifold Rayleigh wave prospecting

●Multi-wave high density seismic imaging

. Shallow reflection survey

●Shallow refraction survey

●Foundation pile inspection

●Civil engineering quality detection

●Site constant shake survey

●Shakc-to-blasting survey


Channel number: 24 /48
Sample stations:1024, 2048, 4096, 8192, 16384
Sample frequency:
a, Generally, 10μs, 25μs, 50us, l00μs, 200μs, 500us, 1ms, 2ms, 5ms, 10ms, 20ms
b, For micro-tremor survey, lms ~ 200ms optional
A/D converter:24 bit
Signal stack and amplification:32 bit
Dynamic range:144dB
Frequency bandwidth :0. lHz~4000Hz
Noises:1μV(ull- frequency state)
Amplitude consistency:士0.2% 
Phase consistency:+0.01ms
Distortion:土0.05%
Time lapse:0-9999ms
Input resistance:20k
Crosstalk supprecssion≥90dB
Low-cut filter steepness:Software filter
High-cut filter steepness:72dB/ frequency doubling
50Hz trap filter: 40dB



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