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RD-XYZ 3-COMPONENT DOWNHOLE DIGITAL SEISMIC ARRAY

APPLICATIONS

-Oil and gas exploration
-Reservoir characterization
-Mineral exploration
-Resource delineation
-Hazardous waste geologic disposal
-Hydrogeological assessmentn
-Rock mechanical studies
-Research and education

 

FEATURES

-Fully digital down-hole acquisition
-Full data acquisition synchronization
-Full 24-bit high-resolution technology
-Wide-band capability
-High-speed symmetrical or optical data transmission
-Rugged field-proven construction
-Independent clamping of each module, current controlled
-Interfaces with Vibrators and VIBSIST, weight-drop and explosive sources

PRODUCT INFORMATION
Software controlled
  • Data acquisition
  • Clamping
  • Built in test functions
  • System test
  • Transducer test
  • Sample Interval
  • /48, 1/32, 1/16, 1/8, ..., 8 ms
  • Number of Samples per Trace
  • Max. 3000 K-samples
  • System Input Noise
  • < 0.12 ?V RMS @ 1 ms
  • (1.3 nV/Sqrt(Hz) at 7.2 kHz bandwidth)
  • Instantaneous Dynamic Range
  • > 120 dB @ 1 ms
  • Total Harmonic Distortion
  • < 130 dB (22 * 10-6 %)
  • Common Mode Rejection Ratio
  • > 90 dB
  • Gain Accuracy between Channels
  • > 1 %
  • Integral Nonlinearity
  • > 96 dB
  • Cross-talk
  • < 107 dB
  • Analogue Anti-Alias Filter
    7,2 kHz 6 dB / Octave
    Analogue Low-Cut Filter
    S1 Hz 6 dB / Octave
    Digital Anti-Alias Filter
    19.2 kHz @ 1/48 ms
    6.4 kHz @ 1/16 ms
    1.5 kHz @ ¼ ms
    100 Hz @ 4 ms
          12.8 kHz @ 1/32 ms
    3.2 kHz @ 1/8 ms
    800 Hz @ 1/2 ms
    200 Hz @ 2 ms
    50 Hz @ 8 ms
    Rejection at Nyquist Frequencies
    -130 dB
    Operation Temperature Range
    -40°C to +105°C
    Dimensions of one receiver unit
    780 mm length, 55 mm diameter
    Power
    24 Vdc
    Current (electronics) 0.1 A
    Motor clamping current 0.4 A
    Max current (motor clamping limit) 2A / 0.5s
    Maximum Depth
    3000 m
    A/D Converter
    24 bit delta sigma technology
    Frequency Range
    Version LF 3 Hz - 500 Hz
    Version SF 16 Hz - 2000 Hz
    Version HF 40 Hz - 6000 Hz
    Due to its flexible and modular architecture, there is no definite maximum number of elements. This modularity, both in hardware and software, allows to fulfill any client request within reasonable limits.