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Common Electronic Circuit Section 2, REC-IC

The main functions of Common Electronic Circuit Section 2 are the digital control and signal processing and transmission for DLS, DIS and BDS; the control for HRAS, and the data communication of BPSK to surface acquisition system in conjunction with 3-bus and TCT
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Borehole Deviation Logging Sonde, BDS-IC

In conjunction with REC, the accelerometers and magnetometers of BDS calculate azimuth and deviation of borehole.
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Dual Laterolog Logging Sonde, DLS-IC

In conjunction with REC, the DLS provides both deep and medium resistivity measurements and is generally combined with the MFS tool. Three resistivity measurements provide invasion profile and determine accurate true formation resistivity in wells drilled with low resistivity drill fluid against high resistivity formation. The tool can be combined with other 530-series tools or sondes using TCT, REC and NEC subs.
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Dual Induction Logging Sonde, DIS-IC

In conjunction with REC, the DIS records two resistivity curves of different depths of investigation and a SP curve. Combined with MSFL log, three resistivity logs can be converted to the resistivity of flushed zone, the invasion diameter and the true resistivity (Rt). The tool is well used in wells drilled with medium and high resistivity drill fluid, for example, fresh water, air and oil-based mud. The tool is usually run simultaneously with other 530-series tools or sondes in conjunction with REC, NEC and TCT.
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