well logging system JCX-3 logging unit Three-Component Borehole Magnetometer

Applications 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 Specifications

Measuring Range: -99999nT~+99999nT

Difference of readings at the opposite orientation for X, Ymagneto 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