MULTI-POINT THERMAL LOGGING APPARATUS

PURPOSE:To easily detect information regarding the existance of fluid layer of underground water regardless of the underground water in a bored hole, by providing a sensor checking the thermal chance of hot water injected in the bored hole and connecting it to a computer through a thermal converter. CONSTITUTION:A sensor 2 in which a thermodetector is attached to a cable 12, is provided and connected to a thermal converter 3 and a computer 6. The sensor is inserted in a test borehole 9 to measure the natural thermal distribution. Then hot water 13 is poured and agitated to make the temperature uniform. Immediately after that, the temperature is checked once. After that, it is measured at every specified interval. The returning extent of the temperature due to the inflow of the underground water 16 is measured. The number of fluid layer 17 of underground water, the depth thereof, the thickness thereof, and the extent of the whole water permeable speed are checked. In this way, even in an inconvenient place in an mountainous area, underground water layers can be checked.