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Utility Tool Features
EM transmitter and Electronics
- A self-contained battery-operated electro-magnetic (EM) transmitter sub offering a wireless replacement of the wireline connection for standard steering tools, that can operate in any kind of ground without galvanic contact.
- An operating range of up to 1500 feet in low EM noise environments (countryside, sea shore) and up to 750 feet at locations with high levels of man-made electromagnetic noise (urban areas; near power lines, roads, railways etc.)
- A transmission data rate of 1-2 baud which allows a transmission time of about one minute for a complete data set of 3 gravity, 3 magnetic and 1 temperature measurement. The update of the tool face reading can be obtained every 12 seconds.
- Requires only 4 W of power supplied by 10 standard, inexpensive alkaline D-type batteries.
- Microprocessor-controlled downhole data coding with a high noise immunity allowing stable data recording with a signal to noise ratio as low as 6 dB.
- An industrial operation temperature range of -40 to +85°C
Surface Receiver Unit
- High sensitivity
- IP65 portable plastic enclosure
- RFI protection
- AC output range +/-10V
- Battery powered using a rechargeable 12V lead acid sealed battery
- Operating time of fully charged battery - 50 hours
- Operating temperature range -5°C to +40°C
Data acquisition system
- Laptop computer (non weather-proofed)
- 16-bit 50 kHz ADC data acquisition unit
Software package
- Based on the HPVEE visual programming language
- Intuitive user-friendly interface
- Real time digital filtering and spectral analysis
Mechanical Components
- 4 3/4" OD Transmitter Collar Assembly with standard 3-1/2" IF Connections, 9'8" (shoulder to shoulder) length, and a crossover interface to the 1-3/4" tool
- 1 - 3/4" sonde EM Transmitter Electronic Tool
Additional Equipment Requirements (Items outside the scope of supply)
- 4-3/4" diameter Non Magnetic Drill Collar with a minimum length of 20'
- Steering Tool System
- Interfacing mechanics for the Cryoton EM telemetry system
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