An Improved Horner Method for Determination of Formation Temperature

Izzy M. Kutasov, Lev Eppelbaum

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


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 infinite long cylindrical source with a constant heat flow 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.
Original languageEnglish
Title of host publicationProceedings of the World Geothermal Congress 2005, Antalya-Turkey, 24-29 April 2005
EditorsRoland Horne, Ender Okandan
Number of pages8
StatePublished - 2005
EventWorld Geothermal Congress 2005 - Antalya, Turkey
Duration: 24 Apr 200529 Apr 2005


ConferenceWorld Geothermal Congress 2005


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