JCX-3 Three-Component Borehole Magnetometer

JCX-3 Three-Component Borehole Magnetometer

Applications

• 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.

System component:

Main instrument, well logging probe, winch and cable, software

Technical Specifications:

• 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°C)
• Master Instrument Outline Dimension: 305×200×228 mm Weight: 4kg: