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Downhole logging sensor measuring the borehole fluid temperature

Log Name	TEMP
Measured Property	Fluid TemperatureBorehole fluid temperature
Sensor Type	Platinum resistor

SI	Oil Metric	Oil Field
°C	°C	°F = 9/5 T [°C] + 32

_{* – for scintillation detectors}

Scope of Applicability

Geothermal survey
Locate the zones of vertical fluid movement
Locate borehole and behind-casing cross-flow
Locate the tubing/casing leaks
Zonal and integral flowrate quantification

Mathematical Model

Mathematical model of fluid temperature is very complex and described in following papers: