Features:

Multi-array induction tool coil system adopts asymmetry structure with one transmitter coil and eight receiver coils. It works at three frequencies.
Multi-dsp and array coil system are adopted in the tool. The multi-channel, multi-frequency weak signal pick-up in the tool is achieved by real-time calibration, digital filtering and digital phase-sensitive detection technology. A lot of mechanical and electronic measures have been taken for reaching the desirerable tool stability and high reliability.
Due to the excellent performance, high reliability and high accuracy of multi-array induction tool, many oil companies decide to adopt multi-array induction tool as one important part of their logging program.

Specification :

Temperature:311 ¨h(155 )
Pressure :14503.8 psi (100 mpa)
Data transmission:430 kbps/100 kbps

Accuracy:

Vertical resolution : 0.75 ms/m or < 2%
1.81 in., 23.62 in., 47.24 in.
(30cm, 60cm, 120cm)
Investigation depth:9.84 in., 19.69 in., 29.53 in., 59.05 in. 88.58in.
(25cm50cm75cm150cm225cm)

Applications:

Accurate formation resistivity measurement with three vertical resolutions and five investigation depths
Accurate oil/water saturation evaluation (both oil saturation and residual oil saturation)
Thin layer analyses in laminated reservoirs
Oil/water zone identification by resistivity profile images in many difficult cases, like deeply-invaded formations etc.
Resistivity measurement in oil-based mud or air-filled boreholes.