1.
n. [Formation Evaluation]
The temperature in the
borehole at
total depth at the time it is measured. In log
interpretation, the bottom hole temperature (BHT) is taken as the
maximum recorded temperature during a
logging run, or preferably the last of series of runs during the same operation. BHT is the temperature used for the interpretation of logs at total depth. Farther up the hole, the correct temperature is calculated by assuming a certain
temperature gradient. The BHT lies between the
bottomhole circulating temperature (
BHCT) and the
bottomhole static temperature (
BHST).