Application and Feature
Used for magnetic exploration in wells. Suitable for use in drilling with diameter greater than φ46mm for measurement of horizontal component X, Y and vertical component Z in magnetic field. Can also be used as high-precision inclinometer with non-magnetic hole or far away from magnetic well. It can solve the following issues.
Verify ground magnetic abnormality, and determine the nature of abnormality.
Combined with ground magnetic survey for three-dimensional interpretation.
High-precision measurement of deviation azimuth and inclination.
Instruct the drilling arrangement, and guide the drilling.
Determine the depth and direction of blind ore.
Determination of ore body position, extension, range and thickness of exposed ores.
Determination of the occurrence of ore bodies.
Searching of magnetic ore associated ore deposits.
Technical Specification
Measuring Range: -99999nT~+99999nT
Difference of readings at the opposite orientation for X, Y magneto sensors ≤400nT
Difference of readings at the opposite orientation for Z magneto sensor ≤ 300nT
Inclination Measuring Range: 0~45°, Error: smaller than 0.2°
Azimuth Measuring Range: 0~360°, Error: smaller than 2° (inclination ≥3°)
Linearity ≤2‰
Digital Output, Update Rate ≥ 3 times / sec
Probe Outline Dimension: φ40×1400mm
Measured Well Depth ≤ 2000m
Probe Pressure-Proof ≤ 150kg/cm2
Dedicated Cable: 4-core Armed Cable
Instrument Working Power Supply: DC12V/200mA
Working Environment: Temperature: 0~70°; Humidity: 90% (40℃)
Master Instrument Outline Dimension: 305×200×228 mm
Weight: 4kg
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