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Gyro Deviation Tool
 Download .PDF Brochure
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Parameters Logged:
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Natural Gamma (optional) (1)
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2.2 x 10.2 cm (0.875 x 4.0 in.)
NaI Scintillation
Offset: 29.7 cm (11.7 in.)
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0 to 10,000 API units
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Tilt measurement (2)
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X-Y Inclinometers
Offset: 31.2 cm (79.2 in.)
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0 to 90 degrees (+/- 0.5 deg)
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Gyro (3)
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Offset: 224 cm (88.2 in.)
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0 to 45 degrees from vertical (+/- 1.0 deg)
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XYZ Magnetometer (optional) (4)
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Offset: 31.2 cm (79.2 in.)
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0 to 360 degrees (+/- 2.0 deg)
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Deviation information is valuable in mine planning and subsurface mapping. The gyroscopic device is used for measuring deviation through steel drilling rods or casings and in open holes where magnetic rocks occur. The digital solid state design uses a continuous reading gyroscope (modified Goodrich, or WellNav), with information recorded at operator selectable sample intervals. It is not necessary to stop to take station data. Natural Gamma and Magnetic Azimuth are optional. All software to process survey data (including drift corrections) is included in the Log and Display programs which is included with the System VI logging system.
APPLICATIONS:
The most common applications are:
- Accurate delineation of drill path - free from magnetic interference
- Cased hole / in-rod surveying applications
ADVANTAGES:
- accurate and reliable
- not affected by magnetic interference from drill pipe or magnetic rock formations
- lengthy field calibrations are not required prior to each survey
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Specifications:
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Diameter
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42 mm (1.63 in.) (upper) 45 mm (1.75 in.) (lower)
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Length
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242.6 cm (95.5 in.)
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Max. Pressure
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232 kg/cm2 (3300 psi)
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Weight
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13.4 kg (29.5 lb.)
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Max. Temperature
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85 C (185 F)
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Logging Speed
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15 m/min. (50 ft./min.)
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Tool Voltage
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60 VDC
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