MP89-C/H ratio pulse neutron multiple parameter logging tool is a kind of radioactive tool based on pulse neutron, according to the inelasticity (n.n'), elastic scattering (n.n), capture reaction (n.r) and activating reaction theory of fast neutron in nuclear reaction generated in stratum, it probes the abundance of carbon and hydrogen in stratum to calculate the oil saturation.
Features
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It is not affected by salinity and can measure under the condition of low porosity.
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It uses multi detector to lessen the effect of borehole environment.
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It has accurate and reliable data with oil saturation (So) error≤±8%, coincidence rate≥85%, water content (Fw) error≤±8%, coincidence rate≥ 85%.
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It optimizes design, and the tool has higher temperature and pressure resistance and shorter length.
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Logging Mode
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Inelastic-capture logging mode, natural gamma logging mode.
Inelastic-capture Logging:Completes the data acquisition and processing and spectrum unfolding display of time spectrum,
total spectrum, capture spectrum and inelastic spectrum.
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Gamma Detector
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Nal（TI）crystal,energy resolution: 8%
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Input Voltage
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DC90～150V
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Working Current
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90mA(neutron tube is not working)/300mA(neutron tube is working)
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Max Working Temperature
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150℃
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Continuous working
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time is not less than 4 hours
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Max Pressure
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100MPa
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Communication
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bit error rate ≤10-5(about 5km cable)
Manchester Code MII half-duplex uplink and downlink 5.729,11.458,22.916kbps
AMI duplex uplink 50,71,100,143,200kbps downlink 300bps
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Size
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Φ 89×3400mm(without cablehead)
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Weight
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≤105Kg
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Come from: http://en.sitan-china.com ,For more information, please refer to:http://en.sitan-china.com/products/oilfield-logging-service/residual-oil-saturation/mp89-ch.html
