MULTI-MODULE DIGITAL EQUIPMENT FOR BOREHOLE SEISMIC ACQUISITION AMC-VSP-3-48M
Specifications
| Number of modules in the tool |
3÷30 |
| Discrete step, msec |
0,125; 0,25; 0,5; 1,0; 2,0; 4,0 |
Dynamic conversion range, dB
Instantaneous (within one seismic record)
Full |
90
150 |
| Equipment inherent noise level, µV |
0,06÷0,1 |
| Number of surface signal registration channels |
up to 8 |
| Power supply, V, Hz |
220, 50 |
| Max. operational temperature, °С |
120 (140)* |
| Max. operational pressure, MPa |
80 (100)* |
Borehole module overall size, mm
diameter
length
One module weight, kg
|
48 (51)
1230
11 (8)* |
| Wall contact (clamping) force, not less than, kg |
85 |
| Length of cable interconnectors |
customized |
* On agreement with the customer
The tool can be used with different systems of the excitation moment timing e.g Russian CCB-1, CCB-2 and GCR as well as foreign SGS-S, SGD, WSI, Pelton and others systems.
AMC-VSP-3-48M equipment is designed for high sensitive 3-component
borehole seismic acquisition in cased and open boreholes
The apparatus and methodic
complex (AMC) includes:
-
Multi-module digital borehole tool
which consist of:
- several identical borehole modules
- cable inter-connectors
- re-translator module
- GR module
- Surface equipment set which includes:
- Notebook PC
- software-programmable power source
for the borehole tool
- interface block
- Technological software which supports:
- automatic testing of the complex
- control of all technological processes
- preprocessing and quality control
of the data
- maintenance and documentation
automation of the operator's report
 Advantages of the complex
- operations in diverse modifications of the borehole seismic: VSP, offset VSP,
including multi-stake and walkaway mode, in on- and offshore boreholes as well
as cross hole tomography
-
high frequency seismic acquisitions for engineering geology
-
the number of receiving modules can be extended up to 30, they can be easily replaced
-
the tool can be used with any type of logging cable, one-core including
-
no networked noises
-
very low level of self-noises that results in reliable registration of weak seismic signals
and possibility to use non-explosive sources having low excitation energy
-
control of metrological performance of electronic measuring channels
-
minimal influence of the "tool-borehole wall" resonance system on the registrated
seismic oscillations
-
usability and versatility of the technological software
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