DW-150
DW-150 “Slimhole Array System”
PRODUCT DETAILS
Miniaturized Multi-Component Borehole Sonde String
The DW-150 is a miniaturized, multi-component borehole sonde string utilizing an ultra low-noise digitizer, which enables the recording of low-amplitude microseismic events, 3D-VSP, and crosswell seismic imaging.
Features
- 24-bit x three-channel digitizer in each shuttle
- Ultra low-noise digitizer enables recording of low-amplitude microseismic events, 3D-VSP, Crosswell Seismic Imaging, etc
- Slim-hole sonde 1.6 inch OD (<41 mm)
- 3C sensor packages available: 3C tri-axis orthogonal Geophone
- OMNI-2400 high-output Geophone sensors
- Machined stainless housing minimizes mechanical resonance for high-resolution, high-frequency recording
- Direct connection sub-arrays, armored wireline, or rigid interconnects available with high-pressure multi-conductor booted connectors
- Flexible or rigid interconnects may be connected “back-to-back” to form longer intervals
- Maximum distance between sonde modules: 100 meters
- Maximum temperature rating: 150°C
- Maximum pressure rating: 20,000 psi
- Configurations for vertical, deviated, or horizontal wellbore deployments
- Adaptable housing for user-defined, application-specific coupling devices
Mechanical Specifications
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Outside Diameter
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1.6 inches
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< 40.64 mm
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Length
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16 inches
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406.4 mm
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Tool Weight
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5 lbs.
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2.27 kg
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Anchoring System
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Mechanical on each shuttle (bow spring/magnetic)
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Tubing mandrel Permanent (cemented)
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Anchor-to-Weight ratio
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7:1 (passive spring)
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Tool Anchoring Range
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Custom adapters for dimension ranges
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Sizes available upon request
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Points of Contact
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5 points, including oposing clamp axis
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Sensor Package
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3C w/OMNI-2400, mutually orthogonal sensor set standard 2.26
Volts/inch/second Sensitivity |
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Interconnect Options
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Rigid Tubing
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Flexible Armored Wireline Cable
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Standard Lengths
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3, 6, 9, 9, 12, 15, 20 meters
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Maximum Temperature
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302°F
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150°C
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Maximum Pressure
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20,000 psi
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DIGITAL MODULE 3-CH X 24-BIT DIGITIZER SPECIFICATIONS
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Sampling Rates
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¼, ½, 1, 2, and 4 ms
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Pre-amplifier Gains
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0dB, 6 dB, 12 dB, 18 dB, 24 dB, 30 dB, 36 dB
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Equivalent Input Noise @2 MS
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1.13μV rms, 0.58 μV rms, 0.33 μV rms, 0.22 μV rms, 0.19 μV rms, 0.18 μV rms, 0.17 μV rms
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Maximum Input Signal
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1.8 V rms, 0.9 Vrms, 0.45 Vrms, 0.225 Vrms, 0.1125 Vrms, 0.0562 Vrms, 0.0281Vrms
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Gain Accuracy
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< 1%
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Frequency Response
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3 to 1.65 KHz
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Anti-alias Filter
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83% Nyquist
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Instant. Dynamic Range @2 MS
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124 dB
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Cross-feed Isolation
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>90 dB
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THD
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0.001%
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System Timing Accuracy
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Better than 1 PPM
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Resources
