1965 Paper II-H

FORMATION PRODUCTIVITY EVALUATION FROM TEMPERATURE LOGS

JAMES M. BIRD AND NOEL FROST BIRDWELL Division of Seismograph Service Corporation

ABSTRACT

A brief review is presented of the methods of quantitative evaluation of borehole temperature logs as applied to gas flow measurements. A method for evaluation of the formation productivity is introduced, making use of a temperature log of the flowing gas well, the reservoir temperature and pressure, and the Joule-Thomson expansion temperature of the gas. A method is discussed for applying a scale to the temperature log. Its use for obtaining a better understanding of both natural and man-made formation fracture is proposed.