Intelligent Array Induction (iAI)

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The iAI produces accurate measurements of open-hole-formation conductivity as a function of radial distance and depth. The tool uses one transmitter coil providing excitation signals at multiple frequencies into the formation, while an array of receiving coils senses the return signal from the formation. The multi-channel signal-processing technology provides a robust and stable tool response with enhanced radial and vertical resolution despite borehole conditions and formation environments.

LOGGING APPLICATIONS:

  • Determination of true formation resistivity Rt
  • Determination of Water Saturation Sw
  • Movable fluids identification
  • Invasion profiling
  • Thin-bed analysis
  • Well-to-well correlation
  • Borehole fluid resistivity measurement

MECHANICAL:

LENGTH 16.2 ft (4.9 m)
DIAMETER 2.25 in (57 mm)
WEIGHT 105 lbs (47 kg)
PRESSURE RATING 20,000 psi (140 Mpa)
TEMP RATING 350 °F (175 °C)
MAX HOLE SIZE 14 in
TENSILE STRENGTH 20,000 lbs (88,964 N)

MEASUREMENT:

OUTPUT Induction Resistivity, Mud Resistivity, optional SP
RANGE 0.2 to 2000 ohm-m
VERTICAL RESOLUTION 1 ft, 2 ft, 4 ft
ACCURACY +/-1.0 mS/m or +/-2%
DEPTH OF INVESTIGATION 10 in, 20 in, 30 in, 60 in, 90 in