ABSTRACT
A new technique has been developed for determination of the formation temperature from bottom-hole temperature logs. The adjusted circulation time concept, and a semianalytical equation for the dimensionless temperature at the wall of an infi nite long cylindrical source with a constant heat fl ow rate, is used to obtain the working formula. It is shown that the transient shut-in temperature is a function of the mud circulation and shut-in time , formation temperature, thermal diffusivity of formations, and well radius. The sensitivity of the predicted values of formation temperature to the thermal diffusivity is shown. Two examples of calculations are presented.
