terms:differential_temperature_survey
A log consisting of a curve which is a continuous record of the temperature gradient in the borehole. It can be measured by two separate sensors having identical thermal characteristics separated by a fixed vertical distance on a sonde; or, by a technique involving the use of a single temperature sensor and placing the measured signal into storage so it can be played back after the sensor has moved a distance in the borehole equal to a predetermined vertical distance. The differential temperature curve enhances small changes in temperature occurring in the borehole. A differential temperature survey should always include a recorded measurement of temperatures in the borehole. See also temperature log.
terms/differential_temperature_survey.txt · Last modified: 2023/11/22 08:40 by 127.0.0.1